Canadian Radiation Protection Association Association canadienne de radioprotection Vol 36 No 2 Canadian Publications Mail Agreement 41574554 Highlights from the CRPA Conference 2015 / Faits saillants du Congrès de l’ACRP de 2015 Anthony J MacKay Student Paper Contest Winner Turning Noise into Numbers 10 Years of CRPA(R) / La désignation (A)ACRP a 10 ans FPTRP Committee Meeting Summary / Résumé des délibérations de la réunion annuelle du Comité RFPT Meeting Report Mexican Radiation Protection Society, 2015
Transcript
Canadian Radiation Protection AssociationAssociation canadienne de radioprotectionVol 36 No 2
Canadian Publications Mail Agreement 41574554
Highlights from the CRPA Conference 2015 /Faits saillants du Congrès de l’ACRP de 2015
Anthony J MacKay Student Paper Contest WinnerTurning Noise into Numbers
10 Years of CRPA(R) / La désignation (A)ACRP a 10 ans
FPTRP Committee Meeting Summary / Résumé des délibérations de la réunion annuelle du Comité RFPT
The views expressed in the CRPA Bulletin ACRP are those of the authors and do not necessarily represent the views of the editors or of the association.
Canadian Publications Mail Agreement No. 41574554
Send change of address notices andreturn undeliverable Canadian addresses to:
32 Coin du responsable de la radioprotectionUne classification frivole?
35 Advertiser Index
36 Coming Events / Événements à venir
37 Short Courses
38 Contributors / Collaborateurs
39 New Members / Nouveaux membres
39 Corporate Members / Membres corporatifs
Features / Articles
8 Photos from the CRPA Conference 2015 /Photos prises au Congrès de l’ACRP de 2015
12 Merci mille fois Liz! / A Thousand Thank Yous, Liz!
13 10 Years of CRPA(R) / La désignation (A)ACRP a 10 ans
15 Anthony J MacKay Student Paper Contest WinnerTurning Noise into Numbers: Simultaneous Estimation of the Radioactivity Distribution and Electron Density Map from Scattered Coincidences in PET
22 Federal Provincial Territorial Radiation Protection Committee Meeting Summary
24 Résumé des délibérations de la réunion annuelle du Comité de la radioprotection fédéral-provincial-territorial
On the Cover Skyline from The Forks in Winnipeg featuring the Human Rights Museum. Credit: Dan Harper.
Sur la couverture Horizon de La Fourche, à Winnipeg montrant le Musée canadien pour les droits de la personne. Crédits : Dan Harper.
Photo Credit / Crédit pour les photos
Valerie’s Phelan photos from the 2015 CRPA conference have been featured throughout the Bulletin. Thank you, Valerie. / Photos prises par Valérie Phelan au congrès 2015 de l’ACRP ont été présentés tout au long du Bulletin. Merci, Valerie.
Canadian Radiation Protection AssociationAssociation canadienne de radioprotectionVol 36 No 2
Canadian Publications Mail Agreement 41574554
Highlights from the CRPA Conference 2015 / Faits saillants du Congrès de l’ACRP de 2015
Anthony J MacKay Student Paper Contest WinnerTurning Noise into Numbers
10 Years of CRPA(R) / La désignation (A)ACRP a 10 ans
FPTRP Committee Meeting Summary / Résumé des délibérations de la réunion annuelle du Comité RFPT
The objective of the Canadian Radiation Pro-tection Association (CRPA) is to advance the development and communication of scientifi c knowledge and practical means for protecting people and their environment from the harmful effects of radiation consistent with the optimal use of radiation for the benefi t of society. To this end, CRPA will
1. further the exchange of scientifi c and tech-nical information relating to the science and practice of radiation protection,
2. encourage research and scientifi c publica-tions dedicated to the science and practice of radiation protection,
3. promote educational opportunities in those disciplines that support the science and practice of radiation protection,
4. assist in the development of professional standards in the discipline of radiation protection, and
5. support the activities of other societies, as-sociations, and organizations, both national and international, having any activities relevant to the foregoing.
The association publishes the Bulletin four times a year and distributes it to all members. Subscription rates for non-members, such as libraries, may be obtained from the secretariat.
Members of the association are drawn from all areas of radiation protection, including hospi-tals, universities, the nuclear power industry, and all levels of government.
Membership is divided into fi ve categories: full members (includes retired members), with all privileges; associate and student members, with all privileges except voting rights; honorary members, with all privileges; and corporate members. Corporate member-ship is open to organizations with interests in radiation protection. Corporate members are entitled to have their name and address listed in each Bulletin, a complimentary copy of each Bulletin, a copy of the Membership Handbook containing the names and addresses of all CRPA members, reduced booth rental rates at the annual meeting, and reduced advertising rates in the Bulletin.
Application forms are available on the CRPA website or from the secretariat.
L’objectif de l’Association canadienne de radioprotection (ACRP) est de faire progresser le développement et la communication des connaissances scientifi ques et des moyens pratiques pour protéger les personnes et leur milieu contre les effets nocifs des rayonne-ments, en harmonie avec l’utilisation optimale des rayonnements au profi t de la société. À cette fi n, l’ACRP désire :
1. améliorer l’échange d’informations scienti-fi ques et techniques liées à la science et à la pratique de la radioprotection;
2. encourager la recherche et la publica-tion d’articles scientifi ques, toutes deux vouées à la science et à la pratique de la radioprotection;
3. promouvoir les possibilités pédagogiques de ces disciplines qui soutiennent la sci-ence et la pratique de la radioprotection;
4. aider à l’élaboration de normes pro-fessionnelles dans la discipline de la radioprotection;
5. soutenir les activités d’autres sociétés, as-sociations et organizations, tant nationales qu’internationales, ayant des activités pertinentes avec ce qui précède.
Les membres de l’association proviennent de tous les horizons de la radioprotection, y com-pris les hôpitaux, les universités, l’industrie nucléaire génératrice d’électricité et tous les niveaux du gouvernement.
L’association publie le Bulletin quatre fois par an et le fait parvenir à tous les membres. Le prix d’un abonnement pour les non-membres, par exemple une bibliothèque, peut être obtenu auprès du secrétariat.
Les membres sont classés selon cinq caté-gories: membres à part entière (y compris les membres retraités), avec tous les privilèges; membres associés et étudiants, avec tous les privilèges sauf le droit de vote; membres honoraires, avec tous les privilèges; et membres corporatifs.
Les membres corporatifs ont droit d’avoir leur nom et leur adresse indiqués dans chaque Bulletin, de recevoir un exemplaire du Bulletin, de recevoir un exemplaire de l’annuaire de l’association contenant les noms et adresses de tous les membres de l’association, d’avoir un kiosque à tarif réduit lors des conférences annuelles, d’avoir un espace publicitaire à tarif réduit dans le Bulletin.
Les formulaires de demande d’adhésion peuvent être obtenus sur le site Web ou auprès du secrétariat.
Prospectus
CRPA Committees / Comités de l’ACRPCanadian Radiation Protection Association /Association canadienne de radioprotection
CRPA is an affi liate of the International Radiation Protection Association / L’ACRP est membre de l’Association internationale de radioprotection.
President / PrésidenteTanya Neretljakph: 905.721.8668, ext 6521email: [email protected]
President Elect / Président désignéeDave Niven
Past President / Président sortantJeff Dovyak
Secretary / SecrétaireLeona Page
Treasurer / TrésorierMojgan Soleimani
Directors / Directeurs et directricesScott Nichelson, Valerie Phelan, Ali Shoushtarian, Leah Shuparski-Miller
Professional Development
Director / directrice: Leah Shuparski-Miller (BoD/CA1)
Registered Radiation Safety Professionals(RRSP) / Professionnels de la radioprotectionagréés (PRA)Tanya Neretljak (chair / presidente, Ontario), Jean-Pierre Gauvin, (PQ/QC), Jeff Dovyak (West / Ouest ), Brandon Hardy (Maritimes)
• RRSP Registration Subcommittee / PRA sous-comité de l’inscriptionJeff Dovyak (chair /président), Christopher Malcomson (Exam Coordinator/ coordinateur des examens), Lamri Cheriet, Susan Yeung
• RRSP Maintenance Subcommittee / PRA sous-comité du maintienBrandon Hardy (chair / président), Vani Ranganathan, Hoa Ly
• RRSP Special Projects Subcommittee / PRA sous-comité projets spéciauxTanya Neretljak, Jean-Pierre Gauvin
Conference / ConférenceGary Wilson (chair / président), Ralph Bose, Liz Krivonosov, Pauline Jones, Ali Shoushtarian
Students & Young Professionals / Étudiants et jeunes professionnelsLeah Shuparski-Miller (chair / présidente), Ralph Bose,Dave Niven, Suketu Patel, Ian Steadman
Professional Development / développement professionnelTrevor Beniston (chair / président), Joe Cortese, Sandu Sonoc, Edward Bump.
Communication
Director / directrice: Valerie Phelan (BoD/CA)
CommunicationDave Niven (chair / président), Ralph Bose, Kellie Franz, Roger Hugron, Chester Neduzak, Tanya Neretljak (Web champion / présidente), Scott Nichelson, Leona Page, Jeff Sandeman, Valerie Phelan, Stéphane Jean-François (Bulletin editor-in-chief / rédacteur en chef du Bulletin)
Rules / RèglementsPauline Jones (chair / présidente)
Finance / fi nancesManon Rouleau (Chair/ présidente), Ali Shoustarian, Hoa Ly
External Affairs/Affaires Externes
Director / directeur: Scott Nichelson (BoD/CA)
International Liaison / Liaison internationaleChris Clement (Chair/ président), Chunsheng Li, Richard Wassenaar, Adelene Gaw, Jing Chen
CRPA Position Statements /Déclarations publiques de l’ACRPJeff Dovyak (chair / président)
Board of directors liaison / liaison avec le conseil d’administration (BoD/CA)
CRPA Bulletin / Bulletin de l’ACRP Vol 36 No 2 / 5
President’s Message / Message de la présidente
Greetings CRPA members!I am writing this message only weeks following our annual CRPA conference. Like the frigid winter some of us had in 2015, the past year proved to be another challenging one for CRPA, which kept your board of direc-tors on its toes. For those of you who missed my inaugural president’s message in June, it is available on the CRPA website under the President’s Message tab. I encourage you to read it as it describes the tumult of the past year and highlights the successes and improvements made during the 2014–2015 year.
The annual general meeting (AGM) was unconven-tional this year, due to our updated Certificate of Con-tinuance and revised bylaws. There was no incoming president’s message or musical chairs by outgoing and incoming board members. For those who missed the AGM, you missed what will go down in the archives as one of the most emotional AGMs in CRPA history. We said a tearful goodbye to one of CRPA’s most supportive, committed, and treasured members, Ray Ilson. An article honouring Ray’s life and times with CRPA can be found in this edition of the Bulletin. After remembering Ray, the board lightened the mood by giving a mini-roast and presentation of thanks to our outgoing secretariat Liz Krivonosov.
Unconventionality was the name of the game at our hugely successful conference in Winnipeg. A ton of credit goes to the local organizing committee for all their hard work in bringing us a relevant and interesting scientific program, held in a welcoming venue. Our banquet was a unique experience. We strolled through the Manitoba Museum, where things got downright silly (much needed and well received; thank you team). The 2016 Toronto con-ference planning committee is well into the finessing stage of preparations for your next annual conference, and we invite you to check the conference webpage to get all the program details as they unfold.
For the upcoming year, CRPA will focus on main-taining the communications momentum started nine months ago, a commendable improvement in the way CRPA conducts its business. As the board and its sup-porting committees develop and implement new initia-tives, we will keep you apprised. Transparency is the motto of this year’s board, and we encourage all members to
Chers membres de l’ACRP. Je vous écris à peine quelques semaines après notre congrès annuel. Tout comme l’hiver glacial que certains d’entre nous ont connu en 2015, la dernière année a présenté son lot de défis à l’ACRP et le CA a su demeurer vigilant. J’invite ceux qui n’ont pas lu mon premier message de juin à aller le lire sur le site Web de l’ACRP : il décrit le tumulte de la dernière année et met en valeur les progrès et succès de l’année 2014-2015.
La dernière assemblée générale annuelle (AGA) était tout sauf ordinaire en raison de la réception de notre certificat de prorogation et de la révision de nos règle-ments administratifs. Le jeu de la chaise musicale entre les membres du conseil sortants et entrants n’a pas eu lieu et aucun message du président entrant n’a été publié. Cette AGA a été la plus émotive de toute l’histoire de l’ACRP puisque nous avons fait des adieux émouvants à l’un des plus grands supporters de l’ACRP, membre engagé et tré-sorier : Ray Ilson. Vous trouverez un article en l’honneur de sa vie et des années passées à l’ACRP dans la présente édition du Bulletin. Le conseil a ensuite allégé l’atmosphère à l’aide d’un mini bien-cuit et de remerciements pour notre secrétaire sortante, Liz Krivonosov.
Des plus réussis, le congrès annuel sortait du cadre conventionnel à Winnipeg. Une bonne dose du crédit va au comité organisateur, dont le dur labeur nous a donné un programme scientifique captivant et pertinent, dans un lieu accueillant. Notre banquet était unique. Nous avons déambulé au Musée du Manitoba où nous avons pu lâcher notre fou et nous en avions tous besoin (un grand merci à l’équipe organisatrice).
Le comité de planification du congrès de Toronto 2016 est à peaufiner les préparatifs du prochain congrès annuel et nous vous invitons à aller visiter sa page Web pour en connaître le programme au fur et à mesure de son dévoilement.
Notre plan stratégique occupera l’avant-scène de nos activités, et nous aurons recours au tableau de bord de l’association pour repérer les tendances et procéder aux ajustements, au besoin, tandis que nous axons nos activités vers les besoins évolutifs de nos membres. En effet, fournir des services à nos membres et des opportunités à valeur ajoutée est essentiel au recrutement et à la rétention des membres. En outre, s’impliquer dans un de nos comités est une autre opportunité que nous offrons à tous nos membres, l’association étant administrée grâce au travail assidu de ses bénévoles, engagés à contribuer à l’organisme et à son maintien. Je vous encourage à profiter au maxi-mum de votre adhésion en vous impliquant.
continued on page 37 . . . suite à la page 34 . . .
CRPA Bulletin / Bulletin de l’ACRP Vol 36 No 2 / 7
Editor’s Note / Message du rédacteur en chef
That’s life4.1 mSv.1 That’s the average effective dose Winnipegers receive from Mother Nature. The Winnipeg local organizing committee wanted to share some radiation with their fellow radiation protection profession-als by hosting CRPA’s annual conference this year. In addition to the 34 uSv from the environment, partici-pants were exposed to more than 30 presenters, various workshops, high-calibre professional development courses, and a well-established social program.
Our keynote speaker, the famous Bob McDonald, reminded us that the words “nuclear” and “radiation” are the most misunderstood words in the English language. As a means of introduction, he shared his knowledge of space exploration by highlighting the careers of three Canadian astronauts.
In his opening address, Dr. Daniel Lindsay stressed the importance of keeping our knowledge up-to-date. He reminded us that we are the “Ghostbusters”—we’re the ones to call when it comes to radiation protection.
John Takala, Cameco Corporation, in his talk about ICRP and its working group on radiation protection and ethics, referenced a presentation by Jacques Lochard: “Radiation protection is not only a matter for science. It is a problem of philosophy, and morality, and the utmost wisdom.”
The vitality of this conference also resulted from the exhibitors, informal and friendly meetings, and more formal meetings such as CRPA’s AGM. This year’s AGM proved to be very emotional. One of the members of the board of directors did not make the trip to Winnipeg this year. Ray Ilson, treasurer, friend, and colleague is no longer among us. That, too, is life. This Bulletin tells how Ray was a Ray of light for us.
But life flourishes, rebounds and goes on. So, for ban-quet night, the Manitoba Museum transformed itself into a foodie museum with bountiful tables for us to enjoy as we moved from one exhibit to the next. A note to the local organizing committee: it would have been better for our waistlines if you had chosen the snake pit exhibit (reflect-ing the Narcisse area of Manitoba) to host the desserts table. That way, most of us would have passed!
C’est la vie4,1 mSv.1 C’est la contribution moyenne de Dame Nature pour les Winnipégois. Les membres du comité organisa-teur ont tenu à partager un peu de rayonnement avec leurs collègues professionnels en radioprotection en accueillant le congrès annuel de l’ACRP cette année.
Outre les 34 μSv de rayonnement naturel, les par-ticipants ont pu s’exposer à plus de 30 conférenciers, quelques ateliers, de la formation continue de premier plan et un programme social bien rodé. Le très populaire Bob McDonald nous a rappelé que les mots « nucléaire » et « radiation » sont les mots les plus incompris de la langue française. Comme mise en bouche au congrès, il a partagé ses connaissances spatiales en soulignant le parcours de trois astronautes canadiens. Dans son introduction, Dr Daniel Lindsay nous indiquait l’importance de tenir ses connaissances à jour puisque nous sommes les « Ghostbus-ters » : c’est-à-dire que c’est nous qu’on appelle quand il est question de radioprotection.
C’est cette radioprotection que Jacques Lochard présente comme « non seulement une question de science, mais aussi un problème de philosophie, de moralité et de la plus haute sagesse. » Cette citation, rappelée par John Takala de Cameco Corporation, concernait la CIPR et son groupe de travail sur la radioprotection et l’éthique.
La vitalité de ce congrès repose aussi sur ses exposants, les rencontres informelles et amicales ou les réunions plus formelles comme l’assemblée générale annuelle de l’ACRP, dont la version 2015 était très émotive. En effet, un membre du CA n’a pas pu faire le voyage vers Winni-peg cette année : notre trésorier, collègue et ami, Ray Ilson n’est plus. C’est aussi ça la vie. Le Bulletin raconte com-ment Ray a été pour nous un Rayon de vie .
Or, la vie exalte, rebondit et continue. Et c’est ainsi que, pour la soirée du banquet, le Musée du Manitoba s’est transformé en musée gourmand dans lequel nous attendaient des tables de victuailles d’une salle d’expo-sition à l’autre. Petite observation soumise au comité organisateur : Pour le tour de taille des convives, il eût été préférable de choisir la salle de la fosse aux serpents de Narcisse (du Manitoba) pour accueillir la table des desserts : on aurait volontiers passé notre tour!
Avant de nourrir le corps et l’esprit, Leah Shuparsky-Miller (Prix des services méritoires) et Chris Clement (Prix des fondateurs) ont été honorés, à juste titre, pour leur contribution à l’ACRP.
1 CCSN(2013) : Fiche d’information – Rayonnement naturel de fond
continued on page 34 . . . suite à la page 34 . . .
8 / Vol 36 No 2 CRPA Bulletin / Bulletin de l’ACRP
May 12–15 | 12 au 15 mai | 2015 | Winnipeg, MB
2015 Founders Award / Prix de fondateur 2015 — Ali Shoushtarian accepting on behalf of / acceptant le prix au nom de Christopher Clement
2015 Meritious Service Award / Prix de services méri-toires 2015 — Leah Shuparski-Miller
Keynote speaker, CBC’s Bob McDonald / Conférencier principal, Bob McDonald de la chaîne CBC.
2015 Anthony J MacKay Student Paper winner / gagnant du concours de communications Anthony J MacKay 2015 — Hongyan Sun
The conference banquet featured a progressive dinner (successive courses eaten at different locations) at the Manitoba Museum, where participants enjoyed several food and drink stations among the exhibits. / Le banquet du congrès a comporté « un souper progressif » au Musée du Manitoba, où les participants ont profi té de plusieurs stations de mets et de boissons et mangé en faisant le tour des exposants.
CRPA Bulletin / Bulletin de l’ACRP Vol 36 No 2 / 9
CRPA Board of Directors / Conseil d’administration (back, left to right / arrière, de gauche à droite) Dave Niven (president-elect / président désigné), Scott Nichelson (director of external affairs / directeur des affaires externes), Leah Shuparski-Miller (director of professional development / directrice du développement profes-sionnel), Leona Page (secretary / secrétaire), (middle, left to right / centre, de gauche à droite) Valerie Phelan (director of communications / directrice des communications), Ali Shoushtarian (director of internal affairs / directeur des affaires internes), (front, left to right / en avant, de gauche à droite) Tanya Neretljak (president / présidente), and / et Mojgan Soleimani (treasurer / Trésorière). Missing / Absent: Jeff Dovyak (past president / président sortant).
Outgoing president, Jeff Dovyak, hands-off to incoming president, Tanya Neretljak / Le président sortant, Jeff Dovyak, passe le fl ambeau à la nouvelle présidente, Tanya Neretljak.
Association secretary, Leona Page, with CRPA’s new secretariat, Sue Singer. Sue took over from Liz Krivonosov in March. (For more, see page 12.) / Secrétaire de l’association, Leona Page, avec la nouvelle secrétaire, Sue Singer. Sue a succédé à Liz Krivonosov en mars. (Pour plus, voir la page 12)
Winnipeg Local Organizing Committee passes the conference bell to the Toronto team / Comité local d’or-ganisation de Winnipeg alors qu’ils passent le fl ambeau du congrès à l’équipe de Toronto (back, left to right / arrière, de gauche à droite) Aaron Marshall (TO), Sandu Sonoc (TO), Jeff Dovyak (W), Dave Niven (W), Chester Neduzak (W), Leona Page (W), Paul Barnard (W), Ingvar Fife (W), Daniel Lapkoff (W), (middle, left to right / centre, de gauche à droite) Tanya Neretljak (TO), Valerie Phelan (TO), Jenna Brown (W), (front, left to right / avant, de gauche à droite) Ralph Bose (TO), Esther McKinley (W), Deanne Dombrosky (W), Alison Yarmill (W), and / et Ric Lim (W).
CRPA Bulletin / Bulletin de l’ACRP Vol 36 No 2 / 11
Candid photos from the conference / Photos candides prises au congrès
12 / Vol 36 No 2 CRPA Bulletin / Bulletin de l’ACRP
En mars dernier,, le CA de l’ACRP disait au revoir à sa secrétaire Liz Krivonosov. Membre de l’ACRP depuis 2003, Liz exerçait la fonction de secrétaire de l’Association depuis 2007. Son expertise en radioprotection et ses connaissances sur l’histoire de l’Association ont aidé le Conseil à surmonter de nombreux défis et à mettre en pratique de nouvelles idées au service des membres. Par exemple, sa collaboration s’est révélée essentielle à l’équipe de redéploiement des sites Web de l’ACRP : elle s’est efforcée de fournir rapidement des mises à jour aux membres, tandis que l’équipe travaillait à la création de nouveaux services.
Depuis 2004, Liz contribue également à l’organisation des congrès annuels afin de garantir une expérience enrichissante aux membres de l’ACRP. Le statut élevé atteint par les congrès de l’ACRP consti-tue un précieux héritage. Aujourd’hui membre officielle du comité des congrès, Liz apportera son aide afin de maintenir la qualité à laquelle nos membres se sont habitués, pour les prochains congrès.
Le statut de Liz dans l’Association a évolué de celui de déléguée à celui de membre collective. En effet, son entre-prise KRMC Inc. soutient l’ACRP depuis de nombreuses années, notamment en parrainant nombre d’activités sociales lors des congrès annuels. À leur tour, plu-sieurs membres de l’ACRP ont soutenu Liz dans son cheminement professionnel continu. Bien qu’elle nous manqu era assurément dans son rôle de secrétaire, Liz demeurera une membre très estimée de l’association.
This past March, CRPA said goodbye to Liz Krivonosov as association secretariat. Liz has been a member of the CRPA since 2003 and has served as the secretariat since 2007. Her expertise in radiation protection and her long history with the association has helped the board work through many challenges and implement novel ideas to better serve its members. For example, Liz was a vital member of the CRPA websites redevelopment team, and she strived to provide timely updates as the team worked to develop new web-based services for our members.
Another significant contribution was Liz’s support in organizing the annual conferences, which began in 2004. Both as a member volunteer and as secretariat, she has helped ensure the conferences always included value-added experiences for members. Her legacy is the high stan-dard CRPA conferences now strive for. Liz is now officially part of our national conference committee, and she will assist the committee in ensuring future confer-ences maintain the same high calibre our delegates now expect.
Liz’s standing in the association has evolved from delegate to corporate member. Her company, KRMC Inc., has supported CRPA for many years, particu-larly in its sponsorship of many of our conference social events. In turn, many of us within CRPA have supported Liz in her continuing professional journey.
Though Liz will be missed in her role as secretariat, she will continue to be a valued member of the association.
A Thousand Thank Yous, Liz!
Merci mille fois Liz!
Thinking of becoming a radiation safety professional in Canada?CRPA has the only national designation for registered radiation safety professionals. The CRPA(R) designation is the highest level of competency recognized at the national level by CRPA.
To learn more about the recognition and registration process, and the benefi ts of being a registered radiation safety professional, visit our professional designation webpage:
http://crpa-acrp.org/home/?page_id=5283.
CRPA Bulletin / Bulletin de l’ACRP Vol 36 No 2 / 13
This year marked the tenth sitting of the CRPA(R) exam during the annual CRPA conference held in Winnipeg, MB. How fitting that this anniversary occurred in the same city as the inaugural writing of the exam 10 years ago. In 2005, we had over 20 successful candidates pass our first CRPA(R) exam. This year, on our 10th anniverssary, we welcomed three more suc-cessful candidates to the CRPA(R) team.
Since that first year, the registration process has gone through some significant changes. The process is based on a system that assesses an individual’s credentials against a defined core competency profile common to all radiation safety profession-als. The process includes a provision for certification at a much higher level in four advanced specialty areas. In 2009, follow-ing a unanimous decision by the current CRPA(R)s, the second phase of the process, certification, was abandoned to give formal recognition to our registered professionals, formerly called CRPA(R) and now called Registered Radiation Safety Professionals (RRSPs).
Along the way, two-dozen recognized and registered members have let their registration lapse for various reasons: retirement, lack of maintaining minimal requirements, career changes, or resigna-tion from the association. The registration
process is rigorous and requires a high level of professionalism and abidance to a code of conduct. Many have written the CRPA(R) exam, some successfully, others unsuccessfully. The exam is not for the inexperienced worker and requires sound knowledge in radiation protec-tion principles, practices, and legislative requirements. There are currently 14 CRPA members at the recognition stage who are qualified to write the exam and are encouraged to do so.
The CRPA(R) designation is the highest level of competency recognized by CRPA in Canada and a Registered Radiation Safety Professional (RRSP) achieves this through demonstrating academic excellence, acquiring experience in the field of radiation protection, and successfully completing the CRPA(R) exam. Retaining the designation requires continuing education and professional development, monitored through a main-tenance-of- registration program. The pur-pose of the designation is to ensure that a regulator, employer, or member of the public can have confidence in the quali-fications of a RRSP with the CRPA(R) credential. For more information, please visit our Professional Designation page on the CRPA website.
10 Years of CRPA(R)
2005–2015, 10 years of Rrrrrrs! From left to right: Hoa Ly, Gary Wilson, Jeff Dovyak and Sandu Sonoc. They are some of the original 2005 candidates who passed the exam (now 10 years later).
Cette année, lors du congrès annuel de l’ACRP tenu à Winnipeg au Manitoba, a eu lieu la 10e session d’examen de la désignation professionnelle (A)ACRP. Comme le hasard fait bien les choses, cet anniversaire a eu lieu dans la même ville que lors de l’inauguration de cet examen il y a dix ans.
En 2005, plus de 20 candidats réussissaient ce tout premier examen et obtenaient la désignation (A)ACRP. Cette année, en ce dixième anniver-saire, trois nouveaux candidats ont joint l’équipe (A)ACRP. Depuis, le processus d’agrément a subi des modifications significatives. Le processus d’agrément est basé sur un système qui évalue les compétences individuelles du candidat et les compare au profil des compétences communes de tous les professionnels de la radioprotection. Le processus comprend une provision pour une certification à un niveau plus élevé dans quatre domaines de spécia-lisation. En 2009, après une décision unanime des membres (A)ACRP, la seconde phase du processus, la certifica-tion, a été abandonnée pour offrir une reconnaissance formelle à nos profes-sionnels accrédités, lesquels sont depuis reconnus comme des professionnels de la radioprotection agréés (PRPA).
Pendant la même période, l’agré-ment de deux douzaines de membres est arrivé à échéance en raison de divers facteurs incluant la retraite, le défaut de maintenir les exigences minimales de l’enregistrement, des changements de carrière ou le départ de l’association. Le processus d’agrément est rigoureux et demande un haut niveau de profes-sionnalisme et le respect du code de conduite. Plusieurs candidats ont réussi l’examen menant à la désignation (A)ARCP, alors que d’autres n’ont pas réussi. Cet examen s’adresse à des travailleurs expérimentés et nécessite
La désignation (A)ACRP a 10 ans
Suite à la page 33 . . .
par Tanya NeretljakPrésidente, Comité des professionnels de la radioprotection agréés
by Tanya NeretljakChair, Registered Radiation Safety Professionals Committee
CRPA Bulletin / Bulletin de l’ACRP Vol 36 No 2 / 15
significant bias in the estimated activity distribution, while subtraction-based correction methods destroy the Poisson nature of the data, reduce the system’s sensitivity, and amplify image noise (Popescu 2012). Scattered photons also lead to an increase in the amount of radio-pharmaceuticals injected into patients to keep a reasonable contrast-to-noise ratio in PET images.
The limited spatial resolution (∼6 mm –8 mm) of PET images, as well as a lack of anatomical context, makes an attenu-ation correction and the interpretation of the precise location of the radiotracer difficult. Attenuation correction may be carried out using simplistic, and often inaccurate, approaches or by coupling the PET to the CT or MR system (Bettinardi, Presotto, Rapisarda, Picchio, Gianolli, and Gilardi 2011; Judenhofer et al. 2008). Although a combination of PET and CT is used in commercial scanners, PET/CT has several limitations. Its main drawback is that the imaging is performed sequen-tially rather than simultaneously, which may introduce artifacts when registering the functional and anatomical images. Due to the different energies used in PET and CT, the attenuation map measured at CT energies must be rescaled to the energy of interest for PET. In addition, this process increases the radiation dose to patients. Combining PET and MRI is challenging, as conventional PET systems use detectors that are sensitive to magnetic fields, and it is difficult to relate MRI images to the coefficients required to
RésuméOn considère généralement les coïncidences diffuses comme du bruit qui affecte le contraste de l’image et compromet la précision quantitative d’une tomographie par émission de positrons (TEP). En outre, une image d’anatomie doit fournir une correction adéquate de l’atténuation et faciliter l’interprétation de la distribution de l’activité. En mesurant adéquatement les énergies de photons disséminés et en tirant profit de la cinématique de la diffusion Compton, il est possible de relever deux arcs circulaires pour chaque coïncidence diffuse, ce qui décrit les foyers de diffusion possibles et englobe la position d’annihilation. Forts de cette prémisse, nous avons créé de nouveaux algorithmes de reconstruction itératifs qui utilisent les coïncidences diffuses pour (1) améliorer la distribution de l’activité et (2) obtenir une carte de densité électronique. Les résultats démontrent la faisabilité et les bien-faits de l’introduction des coïncidences diffuses dans le processus de reconstruction de l’image. En effet, introduire les coïncidences diffuses directement dans l’algo-rithme de reconstruction du radiotraceur élimine la nécessité d’une correction de la diffusion, et peut améliorer tant la qualité de l’image que la sensibilité du système. La carte de densité électronique reconstruite à partir des coïncidences diffuses peut être appliquée directement à la correction d’atténuation de la distribution de l’acti-vité, qui élimine de la modification d’échelle de l’énergie et les problèmes d’enre-gistrement. Les patients peuvent bénéficier directement de ce travail, si on réduit la durée du scintigramme et la dose de rayonnement injectée pour obtenir une image de qualité égale, ou meilleure si le temps d’acquisition et l’injection par radiotraceur demeurent constants.
Turning Noise into NumbersSimultaneous Estimation of the Radioactivity Distribution and Electron Density Map from Scattered Coincidences in PET
Hongyan Sun and Geng ZhangDept of Physics and Astronomy, University of Manitoba, and CancerCare Manitoba, Winnipeg
Stephen PistoriusDept of Physics and Astronomy, Radiology, University of Manitoba, and CancerCare Manitoba, Winnipeg
Positron emission tomography (PET) is a powerful metabolic imaging modal-ity, based on simultaneously detecting two anti-parallel annihilation photons. However, it is possible that one or both photons undergo Compton scattering prior to detection. The scatter fraction can be as high as 40% to 60% when the scanner operates in 3D mode or in large patients (Bailey, Townsend, Valk,
and Maisey 2005; Konik, Madsen, and Sunderland 2010). Scattered coinci-dences degrade PET image contrast and compromise quantitative accuracy. Consequently, various scatter correction approaches have been proposed (Zaidi and Montandon 2007; Zaidi and Koral 2004). Most of them estimate and subtract a scat-ter sinogram from the measured data in pre-correction methods, or incorporate a constant additive term into the reconstruc-tion algorithm. Inaccuracy in the estima-tion of the scatter sinogram will introduce
Introduction
Di t ib ti d
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correct for attenuation of the PET annihi-lation photons.
Since the scattered photons also carry some probabilistic information about the spatial distribution of the annihilation
weighted by the electron density and photon flux at each possible scattering position.
The main difference between this generalized scatter ML-EM algorithm (GS-MLEM) and the conventional ML-EM algorithm (LOR-MLEM) is that projec-tion/back-projection process is applied over the area within the TCA, or 3D vol-ume, instead of along the LOR. Thus, this generalized scatter reconstruction method uses both true and scattered coincidences in a consistent way to reconstruct the activity distribution.
To further improve the reconstructed image quality, the different probabilities of annihilation positions within the TCA can be modelled in normalized coordinates as illustrated in Figure 2. If the distance AB between the two detectors and the distance OC from the centre of AB perpendicularly to the TCA have been normalized to unity (Figure 1), then the annihilation position for a scattered coincidence in the normalized coordinate can be expressed by using the absolute ratio of AD relative to the distance AB as the abscissa and the ratio of SD relative to CO as the ordinate. Instead of projecting/back-projecting uniformly within TCA, this map will assign a larger weight to the area where the source is more likely found.
Figure 2: The probability map of annihilation positions for NEMA NU2-2001 phantom in nor-malized coordinates.
The non-ideal energy resolution of PET scanners only blurs this probability map in the vertical direction. The benefit of intro-ducing the blurred map into the GS recon-struction to deal with the non-ideal energy resolution is also reported in this paper.
positions, the goal of this project was to extract the latent information from scattered coincidences to (1) improve the image quality of the activity distribution and (2) extract anatomical information.
Methods and MaterialsScatter reconstruction theory
At the energies of interest in nuclear medi-cine, Compton scattering is the principal photon interaction, and single scattering accounts for more than 80% (Bailey et al. 2005) of the total measured scattered events. The development of this project was based on this observation.
Figure 1: A diagram of a Compton scattering event in a patient.
Figure 1 illustrates a scattered coinci-dence in a patient. The unscattered photon is detected at A, while the other photon undergoes a Compton scattering and is detected at B with energy E′. The
scattering angle θ can be related to the scattered photon energy E′ by using the Compton equation (Bailey et al. 2005). Taking advantage of the kinematics of Compton scattering, two circular arcs (TCA), shown as blue-dotted curves, describe the locus of all the possible scattering locations and encompass the annihilation position. In 3D, the source is located in the volume contained by the surface that is obtained by rotating the TCA around its axis.
The size and shape of the TCA is a function of the scattering angle and the detected photon positions. In the limiting case, where the scattering angle approaches zero, the shape of the TCA approaches the line of response (LOR) for a true coincidence. The true coincidences can be taken as a subset of the scattered coincidences. Thus both true and scat-tered coincidences can be used to extract the activity distribution in a consistent way. The uncertainty in specifying the TCA is related to the energy resolution of the detectors.
Estimating the activity distributionWe have used this knowledge to generalize the Maximum-Likelihood Expectation Maximization (ML-EM) reconstruction algorithm (Shepp and Vardi 1982; Byrne 2001) in list-mode to directly incorporate
scattered coincidences into the image reconstruction algorithm, instead of correcting for them as in conventional emission imaging methods, as expressed in the following form:
(1)
where p is the total number of pixels in the image, N is the total number of detected coincidences and aj,i is the element of the system matrix characteriz-ing the probability that the annihilation photons detected as the jth coincidence
(whether scattered or not) were emitted from pixel i. The attenuation correction coefficient for a scattered coincidence, att, can be can be estimated by averaging the attenuation coefficient over all possible scattering loci described by the TCA and
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Student Corner / Coin des étudiants
Extracting the Electron Density Map
images reconstructed from measured data with a scatter fraction of 50% and energy resolutions ranging from 1% to 12%. As expected, the GS reconstruction was com-promised as the energy resolution became worse. However, the proposed method still achieved better contrast and noise prop-erties up to a 6% energy resolution, when compared to the scattered correction-based method. At the same time, the sensitivity of the system has improved by 50%.
Electron Density Map ReconstructionFigure 5 shows the electron density map of a ring water phantom reconstructed from scattered coincidences with a single source (Figure 5(d)), two point sources (Figure 5(e)), and a circular uniform source (Figure 5(e)). The results show that it is possible to reconstruct the electron density map from scattered coincidences in PET. For two sources, or a distributed source, the crosstalk between the func-tional and anatomical content appears as shown in Figures 5(e) and 5(f). However,
the crosstalk can be minimized by jointly estimating the electron density and activity distribution from both true and scattered events. Further investigation is underway to reduce this effect.
Fig¡ure 3: Image reconstructed from 3×105 scattered coincidences using the conventional LOR-MLEM method. Figure 3(b) and Figure 3(c) are reconstructed from the same scattered coincidences dataset as used in Figure 3(a) by using the GS-MLEM without and with introdu-cing the probability map into the reconstruction.
Figure 4: The images reconstructed from the measured data with a scatter fraction of 50% for the energy resolution from 1% to 12% by using the proposed method.
photon fluence can be modelled by a sensitivity factor that varies for each pixel in the ML-EM algorithm. The difference between this algorithm, which recon-structs the anatomical information, and the previously described algorithm, which enhances the activity distribution, is that the summation for each coincidence is along the arcs in 2D (or surface in 3D) instead of over the area (or volume in 3D) confined by the arcs.
The probability of a Compton interaction occurring is linearly proportional to the electron density of the material. The TCA describes all possible scattering positions. Back-projecting the scattered events along the arcs connecting the two detectors will allow a Compton scattering prob-ability map to be calculated. This map is a function of both radioactive source distribution and the electron density of materials. The influence of the varying
ResultsReconstruction Activity DistributionFigure 3 illustrates the image recon-structed from 3×105 single-scattered coincidences using a conventional PET reconstruction algorithm (LOR-MLEM). As illustrated in Figure 3(a), scattered coincidences only contribute noise to the resultant image in the conventional algorithm. Figure 3(b) and Figure 3(c) show the images reconstructed from the same scattered data using the GS-MLEM algorithm without (b) and with (c) the inclusion of the probability of annihila-tion positions. The results show that the proposed algorithm is capable of extract-ing the activity distribution from scattered events. Including the probability map in the reconstruction speeds up convergence and improves image quality.
In practice, both true and scattered coincidences will be incorporated in the PET reconstruction. Figure 4 shows the
Figure 5: The electron density map of a circular ring uniform water phantom. Upper row shows the phantom with the source distribu-tion displayed in red. The lower rows show the corresponding reconstructions.
continued on page 19 . . .
ConclusionsThis project has demonstrated the feasibil-ity and benefit of extracting both activity and electron density information from scattered coincidences. Incorporating scattered coincidences directly into the radiotracer reconstruction algorithm elim-inates the need for scatter correction and could improve both image quality and sys-tem sensitivity. The electron density map reconstructed from scattered coincidences can be directly applied to attenuation correction for the activity distribution, which will provide more accurate attenua-tion correction and interpretation of the
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RésuméPour discuter du présent article, qui a remporté l’édition 2015 du Concours de communications étudiantes Anthony J. Mackay, Leah Shupaski-Miller s’est entretenue avec Hongyan Sun, doctorant à Action Cancer Manitoba ainsi qu’à l’Université du Manitoba. Dans l’article, Hongyan résume sa recherche par l’utilisation de tomographies par émission de positrons (TEP) qui détectent simultanément deux photons d’annihilation. Mais lorsqu’au moins un des deux photons se disperse, la distribution de l’activité ne peut se reconstruire à partir de ces événements disséminés. Par ce projet, il espère utiliser les coïncidences diffuses pour extraire la distribution d’activité. Son autre objectif est d’utiliser les photons disséminés pour obtenir une carte de densité électronique. Cette information « peut être utilisée directement pour corriger l’atténuation photonique de la distribution d’activité ». Le défi le plus important reste la résolution énergétique, toutefois, le groupe de Hongyan Sun a « proposé un nouveau détecteur qui combine la haute réso-lution énergétique de LaBr3 à l’excellent pouvoir d’arrêt et à la relative facilité d’acquisition du LYSO ». Ceci a l’avantage de produire une émission lumineuse supérieure et de réduire la « quantité de LaBr3 requis, réduisant ainsi le coût total du scintillateur. »
Hongyan espère soutenir sa thèse cet automne et amorcer une recherche ou obtenir une résidence en physique médi-cale clinique au Canada. Comme il remarque que le marché de l’emploi n’est pas reluisant ici, il pourrait retourner en Chine, son pays natal. Il ajoute que « la physique médicale en est à ses balbutiements en Chine » et qu’à peine cinq uni-versités offrent un programme d’études supérieures en phy-sique médicale. Comme le domaine est en pleine émergence dans ce pays, il croit avoir de meilleures chances de devenir professeur, ce qui lui permettrait de combiner enseignement, travail clinique et recherche.
Quand on lui demande pourquoi il a choisi ce champ d’études, Hongyan répond que la physique l’interpelle parce qu’elle « essaie de résoudre des problèmes et de trouver des inconnus en creusant profondément dans la nature. » La mort de sa grand-mère par le cancer alors qu’il était tout jeune l’a également poussé vers cette voie. « C’est à ce moment que j’ai décidé que même si je ne pouvais plus rien faire pour elle, je pouvais à tout le moins éliminer la douleur et la souffrance d’autres patients. » Hongyan a conclu l’entre-vue en remerciant l’ACRP de l’inviter au congrès comme conférencier, et de l’avoir chaleureusement accueilli et aidé.
Can you briefly explain your research, for those readers who might have missed your talk or maybe haven’t thought about PET for some time?
Depending on the metabolic activity explored, PET simultan-eously detects two annihilation photons to generate a distribution of radiopharmaceuticals. When one or both photons are scat-tered, the activity distribution cannot be reconstructed from these scattered events. The goal of my project is to use the scattered coincidences to extract the activity distribution. The other goal is to use scattered photons to get an electron density map. The ana-tomical information obtained here may not be as good as a CT image, but it can be used directly to correct the photon attenua-tion of the activity distribution. The idea is to eventually use PET only to provide both functional and anatomical information.
What is the biggest challenge in moving forward with this type of imaging?
The biggest problem is the energy resolution of PET scanners. Currently, the energy resolution for clinical PET scanners is about 12% to 20%. Our group has proposed a novel detector that combines the high-energy resolution of LaBr3 with the excellent stopping power and relative ease of acquisition seen with LYSO. A layer of LaBr3 crystal sits above a layer of LYSO crystal. Unlike conventional phoswitch configurations, the two layers in this proposed design are optically isolated from each other and have separate readouts by SiPMs to avoid light loss at the interface between the two crystal layers. The motivation behind this setup is to take advantage of the superior light output of LaBr3 while the LYSO layer is used to capture unscattered (i.e., higher energy
Interview with Hongyan Sun, Student Paper Contest Winner
by Leah Shuparski-Miller, chair Student and Young Professionals Committee
Hongyan Sun
CRPA Bulletin / Bulletin de l’ACRP Vol 36 No 2 / 19
Student Corner / Coin des étudiants
photons) that would otherwise penetrate the LaBr3 layer without interacting. This configuration also reduces the amount of LaBr3 that is required, decreasing the total scintillator cost.
Congratulations on your win! It’s been a few months now since the confer-ence . . . what have you been up to?
I just sent out my thesis to the external reviewer. I will be ready to defend once they review! And I am hoping to defend it this fall. I have also been busy trying to find a research or clinical medical physics residency in Canada. The job market is tough right now. I may go back to China, depending on things here.
What is the state of medical physics in China?
Medical physics is in its initial state in China. Only about five universities offer medical physics programs at the graduate level. They need several thousand medical physicists. Maybe If I go back I might have a chance to be a university professor, and combine clinical work and research.
I think I would really enjoy the combination of teaching, meeting young people, and doing clinical work.
What’s your favourite part of teaching so far?
I love working with the students and that great feeling you get when the student really gets it. The learning process is mutual; I always learn something new when I teach.
What made you decide to do medical physics?
I love physics so much. Physics tries to solve problems or unknowns in nature, at the deepest level. It’s very, very exciting. What I love about medical physics is that I get to use physics to do something useful. It’s the perfect career for me.
My main career goal is to become a clinical medical physicist to treat cancer and reduce pain and suffering. My grand-mother died of cancer very early in my life. I decided then that, even though I cannot do anything for her, I can at least help eliminate pain and suffering in others.
Anything else you want to share with our readers?
Thank you for hosting me at the confer-ence, for your warm welcome, and for your help.
metabolic images at a reduced cost. Thus this work finally leads to more accurate diagnoses for patients and reduces the radiation dose, making PET more access-ible to the public.
ReferencesBailey DL, Townsend DW, Valk PE,
Maisey MN, editors. Positron emission tomography: Basic Sciences. New York (NY): Springer; 2005.
Bettinardi V, Presotto L, Rapisarda E, Picchio M, Gianolli L, Gilardi, MC. Physical performance of the new hybrid PET⁄CT Discovery-690. Med Phys. 2011; 38(10):5394-5411.
Byrne C. Likelihood maximization for list-mode emission tomographic image reconstruction. IEEE Trans Med Imaging. 2001; 20(10):1084-1092.
Judenhofer et al. Simultaneous PET-MRI: A new approach for functional and morphological imaging. Nature Medicine. 2008; 14:459-465.
Konik A, Madsen MT, Sunderland JJ. GATE simulations of human and small animal PET for determination of scatter fraction as a function of object size. IEEE Trans Nucl Sci. 2010; 57(5):2558-2563.
Popescu LM. PET energy-based scatter estimation in the presence of randoms, and image reconstruction with energy-dependent scatter and randoms corrections. IEEE Trans Nul Sci. 2012; 59:1958-1966.
Shepp LA, Vardi Y. Maximum likelihood reconstruction for emission tomography. IEEE Trans Med Imaging. 1982:MI-1.
Zaidi H, Koral KF. Scatter modelling and compensation in emission tomography. Eur J Nucl Med Mol Imaging. 2004; 31:761-782.
Zaidi H, Montandon M-L. Scatter compensation techniques in PET. PET Clin. 2007; 2:219-234.
Turning Noise into Numbers . . . continued from page 17
Anthony J. MacKay Student Paper Contest
What Is It?
Each year the Student Affairs Committee organizes a student paper contest in conjunction with the CRPA annual conference. The winner is given the opportunity to present their paper at the conference. Their conference registra-tion, travel, and lodging are all provided. Their paper is also published in the quarterly CRPA Bulletin. All students who enter the contest receive a free one-year CRPA membership. This year, the con-test is sponsored by UOIT.
Who Can Enter?
This contest is open to all students enrolled full-time in a Canadian college or university program related to the radiation sciences.
More Information
Visit the website (www.crpa-acrp.org) and click on Student Corner.
Concours de communications étudiantes Anthony J. MacKay
De quoi s’agit-il?
Chaque année, le comité de liaison avec les étudiants organise un concours de communications écrites pour les étudiants, conjointement au congrès annuel de l’ACRP. Le gagnant ou la gagnante du concours aura l’opportunité de faire sa présentation au congrès. Ses frais d’inscription, de transport et de logement seront payés. De plus, la communication gagnante sera publiée dans le Bulletin de l’ACRP et le gagnant ou la gagnante se méritera un abonnement d’un an à l’ACRP.
Qui peux s’inscrire?
Le concours est ouvert à tous les étudiants inscrits à plein-temps à une université ou un collège dans un programme relié aux sciences des rayonnements.
Plus d’information
Visitez the site web (www.crpa-acrp.org) et cliquer sur Coin des étudiants.
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The Federal Provincial Territorial Radiation Protection Committee (FPTRPC), an intergovernmental committee of radiation protection regulators and authorities, meets on an annual basis in order to discuss issues of common interest. The committee met from October 21 to 24, 2014, and discussed radiation protection issues covering both ionizing and non-ionizing radiation.
The MeetingFPTRPC provides a forum for representatives of the provinces and territories, the Canadian Nuclear Safety Commission (CNSC), Department of National Defence (DND), and Health Canada (HC) to support the advance-ment, development, and harmonization of practices and standards associated with radiation protection. To fulfill its commitment, FPTRPC has established working groups to• provide a national focus for government radiation protec-
tion agencies;
• promote the harmonization of radiation health and safety programs;
• identify emerging issues in radiation protection and recommend actions to the appropriate jurisdictions;
• develop and harmonize radiation protection standards, guidelines, and input for legislation; and
• consider requests from other governmental committees and agencies concerned with health, safety, and environ-mental issues, and to liaise regularly with such commit-tees and agencies.
For more information about FPTRPC, please consult the following website: www.hc-sc.gc.ca/ewh-semt/radiation/fpt-radprotect/index-eng.php.
Summary of the ProceedingsThe FPTRPC annual meeting was co-chaired by Melanie Rickard (CNSC), Debora Quayle and Narine Martel (HC), and Gary Hughes (Government of Alberta).
A number of presentations were given on various topics including international activities, nuclear accidents, and regulation of nuclear substance and radiation device users.
Presentations• Andrew Adams (HC) provided an overview of recent HC
activities.
• Ramzi Jammal (CNSC) provided an update on CNSC activities.
• Jing Chen (HC) provided an update on the 61st Session of the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR).
• Abderrachid Zitouni (British Columbia Provincial Radi-ologist Specialist) presented on the organizational and technical challenges involved in the implementation and enforcement of the revised International Atomic Energy Agency (IAEA) Basic Safety Standards.
• Jean-François Mercier (HC) provided two presentations: one on the Integrated Fukushima Ocean Radionuclide Monitoring (InFORM) network, and the other on the
October 21–24, 2014, Canadian Nuclear Safety Commission Headquarters, Ottawa, ON
CRPA Bulletin / Bulletin de l’ACRP Vol 36 No 2 / 23
Department of Fisheries project on radionuclide transport from Fukush-ima to the Eastern North Pacific.
• Lauren Bergman (HC) gave two pres-entations: one provided an overview of the dose assessment carried out for the special Environmental Radiation in Canada (ERIC) reports on Fukushima contaminants, and the other gave an update on the Canadian Guide-lines for Protective Actions During a Nuclear Emergency.
• Andrew McAllister (CNSC) presented on the Study of Consequences of a Hypothetical Severe Nuclear Accident and Effectiveness of Mitigation Measures.
• Julie Burtt (CNSC) provided an over-view of the radiation risk assessment tool (RadRAT), used for the Study of Consequences of a Hypothetical Severe Nuclear Accident and Effectiveness of Mitigation Measures.
• Alexandre Colligan (CNSC) presented an analysis of two reportable incidents involving sealed source events.
• Karen Mayer (CNSC) discussed licens-ing of nuclear substances and facilities with radiation devices.
• Lucie Simoneau (CNSC) provided a presentation on the inspection of nuclear substances and facilities with radiation devices.
• Dave Whitby (CNSC) presented on the impact of the CNSC regulation of lower energy accelerators.
• Kiza Francis (CNSC) provided infor-mation on the Ontario Power Genera-tion Deep Geological Repository.
• Kelley Bush and Jeff Whyte (HC) provided an update on the National Radon Program.
• Leo Tse (Ontario Ministry of Health and Long-Term Care) provided an overview of the Healing Arts Radiation Protection Act compliance inventory questionnaire project carried out in Ontario.
• Payal Kapur (Ontario Ministry of Health and Long-Term Care) pre-sented on the Healing Arts Radiation
Protection Act consultation activities with some points of discussion for FPTRPC.
• Abderrachid Zitouni (British Colum-bia) presented on dental x-rays and patient radiation protection.
• Gary Hughes (Director of Radiation Health at Alberta Employment and immigration) presented on lead shield-ing inspection training in Alberta.
• Manon Rouleau (Centre d’expertise clinique en radioprotection) gave two presentations: one on the preliminary analysis of the national CT survey results in Quebec, and the other on the Quebec provincial tour for dose optimization in PET/CT.
• David Duchesne (HC) gave an update on the Federal Nuclear Emergency Plan, May 2014 validation exercises.
• Chunsheng Li (HC) provided an update on the Canadian Guide on Medical Management of Radiation Emergencies.
• Ruth Wilkins and Barry Hauck (HC) discussed human monitoring during a radiological/nuclear event and Health Canada’s contribution.
• Narine Martel (HC) provided an update on the activities of the Medical Imaging Division of the Consumer and Clinical Radiation Protection Bureau.
• Stephen Bly (HC) presented Health Canada’s activities with respect to laser and intense pulsed light (IPL) hair removal devices in the Canadian marketplace.
• Tristan Barr (CNSC) gave an update on CNSC dosimetry services licensing activities.
• Mirela Tabra and Tim Prendergast (HC) provided an update on the National Dose Registry.
• Peter Fundarek (CNSC) presented on radiation exposures to patients.
• Paul Matthews (CNSC) discussed CNSC outreach activities for nuclear substances and radiation devices licensees.
Business MeetingAt its annual business meeting, FPTRPC undertook a review of its working groups and subcommittees and their assigned tasks.• The Business Plan and Com-
munications Working Group ensures the FPTRPC website is current and intends to investigate electronic sharing of information and electronic access to Working Group documents.
• The Naturally Occurring Radio-active Materials (NORM) Work-ing Group is preparing a draft revision of the Canadian NORM guidelines and will proceed with the guidelines for transportation of NORM.
• The Electromagnetic Field Work-ing Group is monitoring literature concerning EMFs with regard to their impact on workers and the general public.
• The Radiation Dosimetry Working Group and the National Dose Registry (NDR) agreed upon revisions to the Dose Information Change Request Form. They are also continuing to monitor literature on doses to the lens of the eye.
• The Radiation Protection in Healthcare Working Group is working with other Canadian agencies to investigate the feas-ibility of registries of Canadian medical radiation dose.
The next FPTRPCannual meeting is scheduled for October 2015 in Ottawa.
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2014
Résumé des délibérations de la réunion annuelle du
COMITÉ DE LA RADIOPROTECTIONfédéral-provincial-terr i tor ial
Le Comité de la radioprotection fédéral-provincial-territorial (CRFPT), comité intergouvernemental des autorités de réglementation en radioprotection, se rencontre annuellement afi n de discuter de questions d’intérêt commun. Le CRFPT s’est rencontré du 21 au 24 octobre 2014 pour discuter de questions portant sur la radioprotection en lien avec les rayonnements ionisants et non ionisants.
La réunionLe CRFPT offre une tribune aux représentants des pro-vinces et des territoires, à ceux de la Commission cana-dienne de sûreté nucléaire (CCSN), du ministère de la Défense nationale (MDN) et de Santé Canada (SC) afin de soutenir la promotion, le développement et l’harmonisation des pratiques et des normes associées à la radioprotection. Pour remplir son rôle, le CRFPT a constitué des groupes de travail qui :• procurent une visée nationale pour les agences de radio-
protection du gouvernement;
• font la promotion de l’harmonisation de programmes de santé et de sécurité portant sur des questions de radioprotection;
• relèvent les nouveaux enjeux en matière de radioprotec-tion et prescrivent les actions à prendre aux juridictions compétentes;
• créent des normes, des lignes directrices et des mesures législatives en matière de radioprotection, et les harmonisent;
• étudient les demandes provenant d’autres comités et agences du gouvernement touchés par les questions de santé, de sûreté et d’environnement, et communiquent régulièrement avec de tels comités et agences.
Pour en savoir davantage sur le CRFPT, veuillez consulter ce site Web : http://www.hc-sc.gc.ca/ewh-semt/radiation/fpt-radprotect/index-fra.php
Résumé des débats de cette rencontreLes rencontres annuelles du CRFPT étaient coprésidées par Melanie Rickard de la CCSN, Debora Quayle et Narine Martel de SC et Gary Hughes du gouvernement de l’Alberta.
Quelques présentations portaient sur divers sujets incluant les activités internationales, les accidents nucléaires ainsi que la réglementation touchant les substances nucléaires et les utilisateurs des appareils de rayonnement.
Les présentations• Andrew Adams (SC) a donné un aperçu des récentes
activités de SC.
• Ramzi Jammal (CCSN) a présenté une mise à jour des activités de la CCSN.
• Jing Chen (SC) a fourni une mise à jour de la 61e séance du Comité scientifique des Nations Unies pour l’étude des effets des rayonnements ionisants (UNSCEAR).
• Abderrachid Zitouni (C.-B.) a donné une présentation sur les défis organisationnels et techniques de la mise en œuvre et de l’exécution de la révision des normes de base en matière de sûreté de l’Agence internationale de l’énergie atomique (AIEA).
• Jean-François Mercier (SC) a donné deux présenta-tions : une première portait sur le réseau de surveillance InFORM (Integrated Fukushima Ocean Radionuclide Monitoring), tandis que l’autre portait sur le projet du ministère des Pêches et des Océans visant à transporter des nucléides radioactifs depuis Fukushima jusqu’à la partie est du Pacifique Nord.
• Lauren Bergman (SC) a également donné deux présen-tations : elle a d’abord donné un aperçu de l’évaluation des doses réalisée pour les rapports spéciaux intitulés La radioactivité ambiante au Canada et portant sur les contaminants de Fukushima. Sa deuxième présentation donnait une mise à jour des Lignes directrices cana-diennes sur les interventions en situation d’urgence nucléaire.
Du 21 au 24 octobre 2014, Ottawa, Ont. siège social de la Commission canadienne de sûreté nucléaire (CCSN)
CRPA Bulletin / Bulletin de l’ACRP Vol 36 No 2 / 25
• Andrew McAllister (CCSN) a pré-senté une étude sur les conséquences possibles d’un accident nucléaire grave et sur l’efficacité des mesures d’atté-nuation (Study of Consequences of a Hypothetical Severe Nuclear Acci-dent and Effectiveness of Mitigation Measures).
• Julie Burtt (CCSN) a donné un aperçu de l’outil d’évaluation des risques de rayonnement (RadRAT) qu’on utilise pour l’étude Study of Consequences of a Hypothetical Severe Nuclear Acci-dent and Effectiveness of Mitigation Measures.
• Alexandre Colligan (CCSN) a présenté une analyse de deux incidents devant être signalés où des sources scellées étaient impliquées.
• Karen Mayer (CCSN) a amorcé une discussion sur l’octroi de permis relatifs aux substances nucléaires et aux installations avec appareils à rayonnements.
• Lucie Simoneau (CCSN) a donné une présentation sur l’inspection de subs-tances nucléaires et sur les installations avec appareils à rayonnements.
• Dave Whitby (CCSN) a présenté les répercussions de la réglementation de la CCSN portant sur les accélérateurs à faible énergie.
• Kiza Francis (CCSN) a fourni de l’in-formation sur le Projet de dépôt dans des formations géologiques profondes d’Ontario Power Generation.
• Kelley Bush et Jeff Whyte (SC) ont pré-senté une mise à jour du programme national du radon.
• Leo Tse (ministère ontarien de la Santé et des Soins de longue durée) a donné un aperçu du questionnaire d’observa-tion de la Loi sur la protection contre les rayons X effectué en Ontario.
• Payal Kapur (ministère ontarien de la Santé et des Soins de longue durée) a fait une présentation sur les activi-tés de consultation de la Loi sur la protection contre les rayons X, tout en ajoutant quelques points de discussion pour le CRFPT.
• Abderrachid Zitouni (C.-B.) a donné une présentation sur les radiographies
dentaires et sur la radioprotection des patients.
• Gary Hughes (Alb.) a fait une présenta-tion sur la formation de l’inspection de blindages au plomb en Alberta.
• Manon Rouleau (Centre d’expertise clinique en radioprotection) a donné deux présentations : la première sur l’analyse préliminaire des résultats du sondage national sur la tomographie informatisée, et l’autre sur la tour-née québécoise pour l’optimisation des doses dans les tépographies/tomodensitométries.
• David Duchesne (SC) a donné une mise à jour des exercices de validation de mai 2014 du Plan fédéral en cas d’urgence nucléaire.
• Chunsheng Li (SC) a fourni une mise à jour du Guide canadien sur la gestion médicale des urgences radiologiques.
• Ruth Wilkins et Barry Hauck (SC) ont discuté de surveillance humaine en cas d’événement radiologique/nucléaire, ainsi que de la contribution de Santé Canada.
• Narine Martel (SC) a donné une mise à jour des activités de la divi-sion de l’imagerie médicale du Bureau de la protection contre les rayonnements des produits cliniques et de consommation.
• Stephen Bly (SC) a présenté les acti-vités de Santé Canada relatives aux appareils d’épilation au laser et par lumière intense pulsée (LIP) présents sur le marché canadien.
• Tristan Barr (CCSN) a présenté une mise à jour des activités d’octroi de licences en services de dosimétrie de la CCSN.
• Mirela Tabra et Tim Prendergast (SC) ont fourni une mise à jour du Fichier dosimétrique national.
• Peter Fundarek (CCSN) a donné une présentation sur l’exposition des patients aux rayonnements.
• Paul Matthews (CCSN) a discuté des activités de sensibilisation de la CCSN envers les détenteurs de permis d’appa-reils à rayonnements et de substances nucléaires.
Rencontre d’affairesLors de sa rencontre d’affaires annuelles, le CRFPT a entrepris une révision de ses groupes de travail et de ses sous-comités, ainsi que des tâches qui leur sont attribuées.• Le Groupe de travail sur les
communications/ le plan d’ac-tivités s’assure que le site Web du CRFPT est à jour, et a l’intention d’enquêter sur le partage électro-nique d’information ainsi que sur l’accès électronique aux docu-ments du Groupe de travail.
• Le Groupe de travail sur la Gestion des matières radioactives naturelles (MRN) rédige une révision des Lignes directrices canadiennes pour la gestion des MRN et poursuivra ensuite avec des lignes directrices pour le trans-port des MRN.
• Le Groupe de travail sur les ondes mégamétriques (GTOM) étudie la documentation portant sur les OM, notamment leurs effets sur les travailleurs et le pub-lic en général.
• Le Groupe de travail sur la dosimétrie des rayonnements et le FDN se sont entendus sur les révisions apportées au formulaire Demande de modification des renseignements sur les doses. Ils continuent également d’étudier la documentation sur les doses exposant les lentilles oculaires.
• Le Groupe de travail sur la radioprotection en soins de santé travaille avec d’autres agences canadiennes afin d’enquêter sur la faisabilité de création de fichiers canadiens sur les doses de rayonnement médical.
La prochaine réunionannuelle du CRFPTaura lieu en octobre2015 à Ottawa.
26 / Vol 36 No 2 CRPA Bulletin / Bulletin de l’ACRP
I was invited by the Mexican Radiation Protection Society (Sociedad Mexicana de Seguridad Radiológical, SMSR) to be one of the plenary speakers at the joint con-gress of SMSR and the Mexican Nuclear Society (Sociedad Nuclear Mexicana, SNM). This was the SMSR’s 26th meeting since its formation and the 14th meeting of the SNM. The joint congress “Nuclear Energy, Climate Change, and Challenges for Security and Radiological Safety” was held in the beautiful Westin Resort and Spa in Puerto Vallarta, Mexico.
For those who have not been to Puerto Vallarta, the infrastructure is modern and the town caters well to tourists. The tem-perature remains fairly constant through-out the year (near 30, and quite humid). While I was there it remained clear, hot, and humid until the day I left, when the rain came down with a vengeance, closing the airport and making me miss all my connecting flights!
The three-day meeting began the night before the opening sessions, when the delegates got together for an informal social gathering at which the wine and liquor flowed (no beer), and our appe-tites were stimulated by some lovely hors d’oeuvres. While this was going on, the outdoor stage was filled with local dancers in colourful costumes, and the band (mariachi, of course) played on.
The first day of the meeting offered simultaneous English and Spanish translation, which was welcomed by some
of the other English speakers and me, since most of the business was carried out in Spanish. The congress was opened formally with the speeches to the assembly from a variety of society officials and local politicians.
Several of the talks on the first days focused on reactor design, existing and new.1 Other speakers highlighted the World Nuclear Association, an organ-ization that disseminates information and data on many aspects of nuclear power generation.2 It was very topical because, during the official opening, it was announced that the Mexican government has given the go-ahead to build three new nuclear reactors. There is also a possibility of expanding the inventory in the existing sites, but this is not yet settled. The new units are expected to go online in 2026, and they will generate between 1,200 MW and 1,400 MW each.
It was clear from some of the other presentations and private conversations I had with delegates that the Mexicans fully appreciate the role of renewable energy. They realize that wind power and photo-electric generation have their place in the generating framework, but that these sources cannot be counted as core pro-cesses. Mexico wants to have a sufficient supply to meet its needs when either the
1 For good information on next generation nuclear energy systems, see Gen IV International Forum www.gen-4.org/gif/jcms/c_9260/public
2 See World Nuclear Association www.world-nuclear.org
RésuméDu 6 au 8 juillet 2015 se tenait le congrès conjoint de la Sociedad Mexicana de Seguridad Radiológical (SMSR ou Société de radioprotec-tion du Mexique) et de la Sociedad Nuclear Mexicana (SNM ou Société nucléaire du Mexique), à Puerto Vallarta, au Mexique. Le plus grand point d’intérêt du congrès a été l’annonce par le gouvernement mexi-cain, de son aval pour la construction de trois centrales nucléaires et on s’attend à leur mise en service à partir de 2026. Conférencier invité pour la séance plénière, je donne un aperçu de son déroulement.
Meeting Report
Mexican Radiation Protection
Society, 2015by Gary H. Kramer
CRPA Bulletin / Bulletin de l’ACRP Vol 36 No 2 / 27
Interestingly, climate change is being
used as a justifi cation for increased use of
nuclear power since the greenhouse gas
emission is small, compared with other
forms of power generation.
sun does not shine or the wind does not blow. Interestingly, climate change is being used as a justification for increased use of nuclear power since the greenhouse gas emission is small, compared with other forms of power generation.
My presentation during the plenary session focused on the challenges of imple-menting ICRP 103 and its changes from both ICRP 26 and ICRP 60. Mexico’s regulations are based on ICRP 26, although they are now using SI units.
One interesting slide in in the pres-entation by Harold McFarlane, a plenary speaker from Idaho National Labora-tory, contained the phrase, “consen-sus approach to replace LNT” (linear
no-threshold model). I spoke with him later and asked him about this. Unfortu-nately it was not a work in progress, but rather a nice thing to have happen!
The Mexican Nuclear Society hosted all the plenary speakers at a most unusual restaurant called La Leche (“the milk”)—everything inside was white! An excellent, unhurried dinner.
The following day did not have any simultaneous translation, so it was diffi-cult for a non-Spanish speaker to make too much sense of some of the presenta-tions. In the afternoon I gave a brief introduction to internal dosimetry with an emphasis on thyroid monitoring. The Canadian experience in the outcomes and benefits of the Thyroid Intercomparison Program run by Health Canada’s Human Monitoring Laboratory surprised many in the audience.
The day ended with the Gala Dinner, which was a buffet of wonderful Mexican food, and the wine and other drinks flowed all night. The delegates and those spouses present were entertained by a
local band, Grupo Farra, who were the best live entertainment in a small venue I have seen in a long time. I left at about 1:00 am and the function was still going on for a few diehards.
As might be expected, time in Mexico has a slightly different meaning from the rest of North America. Often events or sessions did not start on time or overran somewhat, but in the end, everything fit. An interesting experience.
Pictures of the event can be found at http://tinyurl.com/pc6fevq.
Videos related to the event can be found at http://tinyurl.com/nfdqwqq and http://tinyurl.com/ojqn4ej.
28 / Vol 36 No 2 CRPA Bulletin / Bulletin de l’ACRP
CRPA Bulletin / Bulletin de l’ACRP Vol 36 No 2 / 29
Obituaryby Tanya NeretljakWhen longtime supporter and active member Ray Ilson reluctantly resigned as treasurer of CRPA in early April 2015 because of serious illness, the board of directors was left with a sense of helplessness. Not long after, Ray died and the association lost an incred-ibly hard-working and respected colleague who had given so much of himself to the CRPA. For me, it felt like the rug was pulled from under my feet; my mentor and dear friend was now gone.
I met Ray in late 2003 when he interviewed me for a radiation safety officer (RSO) position at the University of Toronto. He was pleasant and inviting from our first intro-duction. Throughout the interview, Ray looked beyond my inexperience and made me feel comfortable, encouraging me as we spoke.
Ray was a wonderful supervisor. He walked me through the halls, introduced me to people, and showed me the ropes. After that, he set me free. That was one of Ray’s best attributes, the trust he bestowed on his people, being there for you if needed but allowing you to build confidence in the work you do. I am indebted to him for many of my professional successes. In this, I am not alone.
When I joined Ray’s team at U of T, he was on the board of directors. He was the elected incoming president. On countless occasions when I would go into his office, he was feverishly typing away at his computer, a mile a minute. I often wondered, what is he working on, so hard, and so fast. That was Ray’s temperament, he was always fast, quick; to some it would seem he was always rushed, but to those of us who worked more closely with him, we learned that this was just Ray’s way, even when he walked. His friends fondly coined this flurry “Ray speed.” It took me a long time realize that Ray was working on CRPA business.
He must have been. He was involved in numerous committees at the time, and as the president-elect, he was the second in command on the board of directors. Having sat in that exact same position, I can say with confidence that no matter how much other work is piling up, the CRPA work, during its busiest time, takes everything out of you. And Ray was always fully committed to CRPA. It was Ray who introduced me to the radiation protection community and the Canadian Radiation Protection Association.
En souvenir de Ray IlsonEn avril 2015, est décédé Ray Ilson, un très respecté membre de l’ACRP depuis longtemps. Au cours de sa carrière, Ray se fait le défenseur de la radioprotection et incarne une véritable mine de connaissances dans le domaine. Il devient un membre actif de l’ACRP en 1999 et fait partie de nombreux comités de même que le Conseil d’administration. Il contribue de façon remarquable à l’ACRP en créant la désignation (A)ACRP. Il commence sa carrière en tant que technicien et chercheur à l’Université de Toronto pour ensuite joindre les rangs du Bureau de la santé et de la sécurité environnementales. C’est en tant que directeur du Service de radioprotection de l’Université de Toronto qu’il fait évoluer la carrière de nombreux étudiants et membres de l’ACRP, dont Tanya Neretljak, Valerie Phelan, Sandu Sonoc, Vanieshree Ranganathan, Hector Rocca, Ayoob Ghalami et Hoa Ly. En 2008, il devient le directeur du Bureau de la sécurité et de l’hygiène du milieu à l’Université Dalhousie, où il supervise le déclassement du réacteur nucléaire de recherche SLOWPOKE, tâche qu’il avait accomplie en 1999 à l’Université de Toronto. Il continue aussi à servir de mentor aux étudiants et à donner des cours de formation continue. Ray était dévoué à sa femme, ses enfants et ses petits-enfants. Sur le plan personnel, ses collègues se souvien-dront de lui comme un être sensible doté d’une grande générosité et d’un humour plein d’esprit : plutôt que de te dire qu’il était en désaccord avec toi, il disait d’abord : « Si j’étais de ton avis, nous serions tous les deux dans l’erreur. » Ray manquera à tous ceux et celles qui le connaissaient.
continued on page 31 . . .
In MemoriamRay Ilson – Respected longtime CRPA member
30 / Vol 36 No 2 CRPA Bulletin / Bulletin de l’ACRP
CRPA Bulletin / Bulletin de l’ACRP Vol 36 No 2 / 31
An active member since 1999, he was an advocate for radiation protection and embodied a wealth of knowledge and experience in the field, which he taught to many during his productive career. He made significant contributions to the radiation protection community by shar-ing his understanding of radiation safety principles and practices. He also created a movement with recruitment into the CRPA. Many members today have bene-fited from his leadership and guidance.
He was monumental in the development of the CRPA(R)
Ray created a designation process for radiation protection professionals in Canada. The CRPA(R) designation is the highest level of competency that can be achieved by a registered radiation safety professional in Canada. For this work, Ray was rewarded with a Founders Award in 2008. Over the years, Ray’s time was devoted to numerous committees, includ-ing the national Conference Committee, Registration Certification Committee, Rules Committee, as well as chair of the Nominations Committee and the inaug-ural Finance Committee. Most recently, Ray held an executive chair on the board of directors as the treasurer of CRPA. Ray sat as a director on the board from 2001–2003, 2010–2012, and 2014–2015 and was past president from 2003–2006. CRPA was Ray’s adopted family, second only to his family to whom he was devoted: his wife, Rosie, children Julie and Daniel, and grandchildren. CRPA demanded his time
Remembering Ray Ilsonby Sandu Sonoc
We will remember our friend and colleague Ray Ilson for his gentle soul and for his endless willingness to help others. He guided many students and fresh graduates to ensure they fulfilled their potential, most notably are two members of the CRPA board of directors—our current president,Tanya Neretljak, and director Valerie Phelan.
Ray was always a friend to immi-grants both professionally in the workplace and personally when he helped them integrate into Can-adian society. Among them are all the University of Toronto (U of T) Radiation Safety Officers, Vanieshree Ranganathan, Hector Rocca, and me; the U of T Senior Biosafety Officer Ayoob Ghalami; and the Western University Radiation Safety Officer Hoa Ly. We are all indebted to Ray for what we are today.
I have never met a gentler person than Ray, but let us remember him with a smile. His humour is best reflected in a paraprosdokians, a fig-ure of speech in which the latter part of a sentence or phrase is surprising or unexpected, frequently humorous. For example,
• War does not determine who is right, only who is left.
• To steal from one person is plagiarism. To steal from many is research.
• I didn’t say it was your fault; I said I was blaming you.
• You don’t need a parachute to sky-dive. You only need a parachute to skydive twice.
So let me conclude with one of Ray’s paraprosdokians. He would never tell you that you are wrong or that he disagreed with you. Instead, he would say, “If I agreed with you, we’d both be wrong.”
Raymon G. IlsonIn loving memory of my boss, mentor, and friend
by Valerie Phelan
A smile, a laugh, a skipThis little man was a tripVery attentive and wiseWith a glimmer in his eyesCo-worker, boss or teacherThe spark and supporter
Rubber band walletNo thought about itForever in our heartsWith all the best parts
We hoped he’d hang on(another Ray-minute). . . but he was goneAt Ray-speed
RInb
bby
Ho
fChapRidi
Ray Ilson receiving the Founders Award from Stéphane jean François in 2008.
. . . continued from page 29
continued on page 35 . . .
32 / Vol 36 No 2 CRPA Bulletin / Bulletin de l’ACRP
Radiation Safety Offi cer’s Corner / Coin du responsable de la radioprotection
A FrivolousClassifi cation?by Stéphane Jean Françoiscertifi ed health physicist
Une classifi cation frivole?par Stéphane Jean Françoisspécialiste certifi é en radioprotection
Answer
Question
For this column, the health physicist has been shoved away from the keyboard to let the radiation safety officer speak! A simple question has been posed: If a worker might exceed 1 mSv per year under acci-dent conditions, must you classify them as nuclear energy workers (Nuclear energy workers)? Or, stated differently, how do you define “reasonable,” as used in the Nuclear Safety and Control Act, where a nuclear energy worker is defined as
A person who is required, in the course of his or her busi-ness or occupation in connec-tion with a nuclear substance or nuclear facility, to perform duties in circumstances where there is a reasonable prob-ability that the person may receive a dose of radiation that is greater than the public dose limit of 1 mSv per year.1
1 Nuclear Substances in Canada: A Safety Performance Report for 2013, p .70
Question
I say no. It is not a reasonable risk. During my 15 years as an RSO at a research facility that housed confinement-level labs involving TBq quantities of aqueous and gaseous tritium, I have never classified anyone as a nuclear energy worker. It was not reasonably probable to have workers exceed 1 mSv in any normal work situa-tion. This is despite internal inhalation
In Figure 8, over 83% of workers designated as nuclear energy workers across all categories do not exceed 1 mSv per year. And Figure 9 shows that universities and research facilities represent the majority of this cohort, with 92.7% of nuclear energy workers in this sector receiving less than
Figure 8: All sectors combined - Annual effect-ive doses to nuclear energy workers from 2009 to 2013
Figure 9: Sector-to-sector comparison - Annual effective doses to nuclear energy workers in 2013
0.5 mSv. I propose we call this phenom-enon a “frivolous designation.” What could be causing this? I would love to hear from you on this topic. Send me an email via the Secretariat, or use the CRPA Facebook or LinkedIn pages. Go to your keyboards, radiation safety professionals!
doses that reached 250 uSv per year in normal circumstances.
But while perusing the CNSC annual report, Nuclear Substances in Canada: A Safety Performance Report for 2013, I came to realize that I may be the exception. Have a look at the following two tables excerpted from the report.
Cette fois-ci, le spécialiste en radioprotection laisse la place au responsable de la radioprotection, à qui on a posé une question toute simple : Faut-il considérer un travailleur comme un travailleur du secteur nucléaire s’il peut être exposé à plus de 1 mSv lors d’un accident? En fait, quelle est votre compréhension du mot « vraisemblablement », tel qu’employé dans la définition de la Loi sur la sûreté et la réglementation nucléaire, qui définit un travailleur du secteur nucléaire en
ces termes : « Personne qui, du fait de sa profession ou de son occupation et des conditions dans lesquelles elle exerce ses activités, si celles-ci sont liées à une substance ou une installa-tion nucléaire, risque vraisemblablement de recevoir une dose de rayonnement supérieure à la limite réglementaire pour la population en général, fixée à 1 mSv par année. »1
1 Les substances nucléaires au Canada : Rapport sur le rendement en matière de sûreté pour 2013, p. 70
CRPA Bulletin / Bulletin de l’ACRP Vol 36 No 2 / 33
Radiation Safety Offi cer’s Corner / Coin du responsable de la radioprotection
Non. Le risque n’est pas vraisemblable. Au cours de mes 15 ans de carrière comme responsable de la radioprotection dans un centre de recherche comptant des labora-toires de niveau de confinement (térabec-querels de tritium gazeux et aqueux), je n’ai jamais considéré un travailleur comme un travailleur du secteur nucléaire, car, en situation normale de travail, il était invraisemblable de dépasser 1 mSv, même si, en circonstances normales, la dosimét-rie interne atteignait par inhalation environ 250 uSv/année.
Toutefois, si je consulte le récent rap-port annuel de la CCSN cité plus haut, il semble que j’étais peut-être une exception. Étudions les figures 8 et 9, tirées de ce document.
Ainsi, dans la figure 8, plus de 83 % des travailleurs désignés comme travailleur du secteur nucléaire, tous secteurs con-fondus, ne dépassent pas 1 mSv/année.
Réponse
Figure 8 : Tous secteurs confondus – Doses effi caces annuelles aux travailleurs du secteur nucléaire de 2009 à 2013
Figure 9 : Comparaison entre les secteurs – Doses effi caces annuelles aux travailleurs du secteur nucléaire en 2013
Or, la figure 9 indique que la majorité (92,7 %) des travailleur du secteur nucléaire du secteur universitaire et de recherche est exposée à moins de 0,5 mSv par année. Ne pourrait-on pas qualifier ce phénomène de « classification frivole »?
Comment l’expliquer? J’aimerais vous lire sur le sujet. Participez en envoyant un courriel au secrétariat, ou en utilisant les profils Facebook ou LinkedIn de l’ACRP. Allez, à vos claviers, professionnels de la radioprotection!
CRPA(R) Designations Awarded for 2015 / Désignations ACRP(R) accordées en 2014—Stephane Mercuren (left) and / et Zahra Chandani (right)
La désignation (A)ACRP a 10 ans. . . Suite de la page 13
des connaissances solides sur les principes et la pratique de la radioprotection et sur les exigences réglementaires. Quatorze membres de l’ACRP sont présentement à l’étape de la reconnaissance et sont admissibles à passer l’examen. Ils sont encouragés à procéder.
La désignation (A)ACRP est le niveau de compétence le plus élevé reconnu par l’ACRP au niveau canadien. Cette désignation octroyée à un professionnel de la radioprotection agréé (PRPA) se base sur la réussite académique, l’expérience dans le domaine de la radioprotection ainsi que sur la réussite de l’examen de la désignation professionnelle (A)ACRP. Le maintien de la désignation requiert de la formation et un développement profes-sionnel continus contrôlés au moyen du programme de maintien de l’enregistre-ment. Le but de la désignation est de s’assurer que les organismes de réglemen-tation, les employeurs ou les membres
du public puissent avoir confiance en les qualifications et les compétences du PRPA et du titre (A)ACRP. Pour plus
d’informations, veuillez visiter la page sur la désignation professionnelle sur le site Internet de l’ACRP.
34 / Vol 36 No 2 CRPA Bulletin / Bulletin de l’ACRP
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Before nourishing our bodies and spirits at the banquet, Leah Shupar-ski-Miller (Meritorious Services Award) and Chris Clement (Founders’ Award) were deservedly honored for their contri-butions to CRPA.
Furthermore, Hongyan Sun was the recipient of this year’s Anthony J. McKay Award. You will find his winning paper within the pages of this magazine.
On a completely different note, under the category of, “life after work,” Gary Kramer presents one of his retirement activities. Like all self-respecting profes-sionals, he continues to feed his curiosity by participating in the Mexican Radiation Protection Society’s annual conference.
For this edition, the Health Physics Cor-ner is transitioning to the Radiation Safety Officer’s Corner. Our question, though, may be more of an observation. I hope it will elicit much discussion among the radiation protection professionals whose Canadian certification, CRPA(R), just proudly celebrated 10 years in existence.
Even if vacation time is definitely over, life is good. Is it not?
StéphaneEditor-in-chief
En outre, Sun a reçu le prix du concours de communications Anthony J. MacKay cette année. Nous reproduisons sa contribution gagnante dans nos pages.
Dans un tout autre ordre d’idées, dans la catégorie « la vie après le boulot », Gary Kramer nous présente une de ses activités de retraite. Comme tout professionnel de grand calibre, il continue à nourrir sa curiosité en participant au congrès annuel de l’Association mexicaine de radioprotection.
Pour la présente édition, le coin du spécialiste en radioprotection s’est transformé en coin du responsable de la radioprotection avec une question qui tient presque de l’observation. Cette question, je l’espère, suscitera quelques discussions parmi les professionnels de la radioprotection dont l’agrément canadien, l’(A)ACRP, célèbre fièrement ses dix ans d’existence.
Même si les vacances sont bel et bien terminées, la vie est belle non?
StéphaneRédacteur en chef
Pour que l’ACRP soit la voix des professionnels de la radioprotection du Canada, il nous faut préserver nos principes fondamentaux et encourager nos jeunes et nouveaux experts à être visibles lors d’activités d’envergure nationale et internationale liées aux rayonnements, car c’est ensemble que nous continuerons d’évoluer et d’améliorer notre sort. Je suis honorée de prendre part à cet essor en dirigeant l’ACRP durant la pro-chaine année.
Respectueusement,Tanya NeretljakPrésidente, ACRP
. . . suite de la page 5
CRPA Bulletin / Bulletin de l’ACRP Vol 36 No 2 / 35
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and much of his effort, which he gave willingly. Even during his most difficult and painful time in the weeks prior to his passing, CRPA was forefront on his mind. CRPA meant the world to Ray, just as Ray meant a lot to us and to the radiation protection community.
Ray started his career behind the bench as a technician and researcher at the University of Toronto. After many years of research experience, he joined the other side of the table as a radiation safety officer, under the direction of Peter Fundarek, within the Office of Environ-mental Health and Safety. By 2001 Ray had become the manager of the Radia-tion Protection Service at U of T, and he helped strengthen the radiation safety program. Ray also focused on developing the non-ionizing radiation programs, thus expanding the scope of the Radiation Protection Service. Ray taught numerous courses in health and safety as well as radiation protection at both U of T and Ryerson University. While an RSO, at the age of 50, Ray completed his Masters of Engineering, a sign of his determination to excel as an educator and leader.
After leaving his role as manager of Radiation Protection and Biosafety
. . . continued from page 31In Memoriam – Ray IlsonServices at U of T, Ray transitioned to a position as acorporate RSO at the University Health Network in Toronto. He followed his dream to lead a full team and a diverse program all the way to Dalhousie University in May 2008. There he was the director of the Environmental Health and Safety Office. During his time at Dalhousie, one of his key achievements was overseeing the decommissioning of the SLOWPOKE research nuclear reactor, a task he had accomplished at U of T in 1999. He also continued to mentor students and taught courses in continuing education.
After his retirement from Dalhousie in 2012 and his return to his beloved family in Toronto, he became principal of Proactive Health and Safety Services. Ray was a certified industrial hygienist, and a Canadian registered safety professional, as well as a registered radiation safety profes-sional with CRPA.
Ray’s legacy will live on for many, many years to come. Those of us who have had the privilege to know Ray through CRPA will keep his memory alive within the asso-ciation. Our dear friend is gone too soon, gone too quickly, at Ray speed.
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For Information About AdvertisingAdvertising in the CRPA Bulletin delivers your message to the heart of the radiation protection com-munity through an association and a publication readers know and trust. If you want to fi nd out more about advertising rates, specifi cations, digital requirements, or submission guidelines, please contact
36 / Vol 36 No 2 CRPA Bulletin / Bulletin de l’ACRP
Coming Events / Événements à venir• ICRP 2015: 3rd International Sym-
posium on the System of Radio-logical Protection October 20–22, 2015, Seoul, Korea Co-organized by the International Commission on Radiological Protection (ICRP) and the Korean Association for Radiation Protection (KARP), the symposium will promote peaceful use of atomic energy, highlight radiation safety and protection within the international community, explore trends and policy direction in radiation protection, and provide a forum for discussion among leading international experts. For more information, visit www.icrp2015.com.
• The 61st Annual Radiobioassay & Radiochemical Measurements Confer-ence October 25–30, 2015, Iowa City, IA For more information, visit www.rrmc.co.
• Health Physics Society 49th Midyear Meeting Jan 31– Feb 3, 2016, Austin, TX If the format, venue, or timing of the annual meetings do not work for you, this is your opportunity. Organ-izers are promising excellent technical presentations using the new format adopted at the 2015 midyear meeting. They will not be limiting the topics and are instead soliciting presentations related to the full spectrum of radia-tion protection specialties. For more information, visit http://hps.org/meetings.
Announcements / Nouvelles
• 2016 National Council on Radia-tion Protection and Measurements (NCRP) Annual Meeting April 11–12, 2016, Bethesda, MD Meeting the Needs of the Nation for Radiation Protection. For more information, visit www.ncrponline.org/Index.html.
• The 14th International Congress of the International Radiation Pro-tection Association (IRPA14) May 9–13, 2016, Cape Town, South Africa This Congress will mark two unique milestones—the 50th Anniversary of the first IRPA Congress and the first IRPA international congress to take place on the African continent. The congress will feature a comprehensive scientific and technical program; the IRPA associate societies business pro-gram; and traditionally warm, vibrant, and friendly African social and cultural events. For more information, visit www.irpa2016capetown.org.za.
• CRPA annual conference May 16–20, 2016, Toronto, ON The sky’s the limit: From space exploration to deep geological repositories. For more infor-mation, visit http://crpa-acrp.org/conference/.
• Congrès annuel de l’ACRP 16–20 mai 2016, Toronto, ON Sans limites : De l’exploration spatiale jusqu’aux dépôts géologiques en profondeur. Pour plus
• 2016 Gilbert W. Beebe Symposium May 23–24, 2016, Washington, DC The symposium was established by the Board on Radiation Effects Research (a predecessor of the Nuclear and Radiation Studies Board) in 2002 to honour the late Dr. Gilbert W. Beebe (National Cancer Institute), who was one of the designers and key imple-menters of the epidemiology studies of Japanese atomic bomb survivors and co-founder of the Medical Follow-up Agency. The symposium is used to promote discussions among scientists, federal staff, and other interested parties concerned with radiation health effects. For more information, visit http://dels.nas.edu/global/nrsb/beebesymposium.
• Health Physics Society 62nd Annual Meeting July 9–13, 2017, Raleigh, NC For more information, visit http://hps.org/meetings.
• Health Physics Society 61st Annual Meeting July 17–21, 2016, Spokane, WA NORM/TENORM (naturally occurring radioactive material/techno-logically enhanced naturally occurring radioactive material) Industry Day will be held as part of the 2016 HPS meeting. For more information, visit http://hps.org/meetings.
CRPA Bulletin / Bulletin de l’ACRP Vol 36 No 2 / 37
send their comments and their ideas our way via the secretariat ([email protected]).
We will also keep the strategic plan forefront in our activities, using the CRPA dashboard to watch for trends and to make adjustments as needed as we align our activ-ities with the evolving needs of our membership. Providing member services and value-added opportunities are critical to recruitment and retention of members. Getting involved with one of our committees is another opportunity offered to all members. The associ-ation does not run on wishful thinking, but on the assiduous work of its volunteers, who are committed to contributing to and maintaining the organiza-tion. I encourage you to make the most of your membership by getting involved.
For CRPA to be the expert voice of radiation safety pro-fessionals in Canada, we need to uphold our foundations and encourage our newer and younger experts to become more visible in national and international radiation-related activities. Together, we will con-tinue to improve and grow.
I am humbled and hon-oured by this opportunity to serve and lead CRPA in the upcoming year.
This 3-day course will provide an introduction to depleted uranium. Topics covered will include: health physics fundamentals for uranium (U) and depleted uranium (DU), including atomic structure, isotopes of U, radiations emitted, radioactive decay mechanisms, half-life and radioactive decay equation, doselimits, inhalation classes, DACs and DAC-hours, biological effects of radi-ation, and radiation risk; radiologicaland chemical properties of U and DU; specific activity; brief overview of the uranium fuel cycle, includingU mining and milling, conversion, enrichment methods, fuel fabrica-tion, and HLW storage, disposaland reprocessing, and methods of DU production for industry and the military; uses of DU in industry and in conflicts (e.g. the Gulf Wars and the Balkans); external and internal exposure to DU and their effects; DU exposure case studies (Department of Defense, Capstone DU Aerosol Report, Sandia National Laboratory, and others); guidance on
exposure to U and DU; monitor-ing and treatment of individuals exposed to DU; and cleanup of DU-contaminated sites. Examples of specific activity, radioactive decay, and internal dose calculations for soldiers in tanks and vehicles struck by DU armor-piercing rounds will be discussed. Calculations of DU uptake in the kidneys, given a DU intake into the body, will be performed. Information on the current state of evaluation of DU-exposed veterans by the Baltimore VA Hospital, as pro-vided in annual reports to Congress, will be provided. Comprehensive references, glossary, and examples OSHA/NIOSH U hazards informa-tion sheets will be provided as well. Students should bring a scientific calculator to class.
Fundamentals of Radiation Safety
December 7–11, 2015Fort Lauderdale, FLFEE: $1295
This 5-day course is designed as an introduction to basic radiation protection principles for beginning HP Technicians and for those with a minimum of technical training. Theory and practical application are equally covered with each student receiving a hard bound textbook and a complete course notebook for future reference and further depth of study. Topics include Basic Physics and Radiological Units, Atomic and Nuclear Structure, Radioactivity, Decay Schemes, Quantities and Units, Statistics Lab and Demonstration, X-rays, Time, Distance and Shielding, Interaction of Radiation with Matter, Internal Dosimetry and Maximum Permissible Concentrations, Natural Radiation, External Dosimetry, Record Keeping, Radiation Detectors (Ionization Chambers, Proportional Counters, Geiger Counters, Scintillation Detectors, Neutron Detectors, etc.), and The Biological Effects of Radiation.
Gamma Spectroscopy Applications
January 4–8, 2016Las Vegas, NVFEE: $1295
This 5-day course is designed to remove the ‘black-box’ approach to gamma spectroscopy results. (i.e., Put the sample on the detector, push
the button, read the printed report, accept the results). It will provide a solid basis in the fundamentals of gamma spectroscopy while focusing on the areas that permit the operator to prepare a representative sample, optimize system parameters, understand the effects of cascade summing, interference peaks, geom-etry, and libraries parameters. Class exercises guide the student through the interpretation of results with consideration of peak fit, source term and process knowledge of the sample. Laboratory QA and good practices are also discussed. Time-permitting, students will be introduced to the concepts and benefits of modeled geometries and in situ measurements.This course will also provide an over-view of the hardware and techniques employed in gamma-ray spectroscopy and provide an understanding of the fundamentals physical processes underlying their application. The primary focus of the course is HPGe detectors although applications of NaI(Tl), CZT and LaBr3(Ce) de-tectors are included as applicable to the course participants. The course will review basic radio-active decay theory and interaction of radiation with matter to explain spec-tral features and their interpretation, including peak identification and energy determination, backscatter peaks, single and double escape peaks and proper use of control charts.This course is designed to provide a practical introduction to gamma spec-troscopy for those new to the field of gamma spectroscopy, but also provide practical applications to those who are currently performing gamma spectroscopy. The course is intended for radiochemists, technicians and others who will be doing routine and specialized gamma spectroscopy, as well as quality assurance officers and data validators who may have a need to understand gamma spectroscopy measurements.
For other course listings please visit our website:
38 / Vol 36 No 2 CRPA Bulletin / Bulletin de l’ACRP
Contributors / Collaborateurs
Stéphane Jean-François is a certified radiation safety specialist and the head of Radioprotection Inc. An engineer/physicist by training, he started his career with the CNSC in 1992, then became the radiation safety officer for the Merck Frosst Centre for Thera-peutic Research in 1995.
Stéphane Jean-François est spécia-liste certifié en radioprotection et directeur de Radioprotection Inc. Ingénieur physicien de formation, il a débuté sa carrière à la Com-mission de contrôle de l’énergie atomique en 1992 et est ensuite devenu responsable de radiopro-tection pour le centre de recherche thérapeutique de Merck Frosst en 1995.
After a productive career at Health Canada in health physics (internal dosimetry, bioassay and In Vivo counting), Gary Kramer retired in 2013. He now consults in health physics and helps run a cage-free dog-boarding facility, AreaK9, with
his wife. Gary and his wife have accumulated about 65 years of experience in handling dogs.
Après une carrière prolifique en radioprotection à Santé Canada (dosimétrie interne, épreuve biologique et comptage in vivo), Gary Kramer a pris sa retraite en 2013. Il est maintenant consultant en radioprotection et, avec son épouse, il administre AreaK9, une pension canine sans cage. Ensemble, ils ont cumulé environ 65 ans d’expérience de vie avec des chiens.
Tanya Neretljak, a biosafety and radiation safety officer at University of Ontario Institute of Technology, is the chair of the Registered Radiation Safety Professionals Committee and the president of CRPA.
Tanya Neretljak, l’agent respon-sable de la biosécurité et de la radioprotection à l’Institut univer-sitaire de technologie de l’Ontario, est la présidente du Comité des professionnels de la radioprotec-tion agréés et la présidente de l’ACRP.
Valerie Phelan is the radiation/chemical/biological safety officer at Ryerson University, and a director on the CRPA Board of Directors.
Valerie Phelan est l’agent respon-sable de la radioprotection / de la sécurité biologique / chimique à l’Université Ryerson et une direc-trice au sein du conseil d’adminis-tration de l’ACRP.
Leah Shuparski-Miller is the chair of the Student and Young Profes-sionals Committee, and a medical health physicist with the Ottawa Hospital. She’s also an associate member of the American Academy of Health Physics, an avid knitter, and a fan of all things science-y.
Spécialiste en radioprotection médicale à l’Hôpital d’Ottawa, Leah Shuparski-Miller préside aussi le comité des étudiants et des jeunes professionnels (SYPCOM) de l’ACRP. Elle est également membre associée de l’American Academy of Health Physics, trico-teuse enthousiaste et amateure de tout ce qui a trait à la science.
Hongyan Sun was born in China. After he obtained his BSc in applied physics from Hebei Normal University (China) in 2010 he went to the University of Manitoba to pursue a PhD in medical physics. His research pro-ject focuses on extracting both the activity distribution and electron density map in positron emission tomography. He will defend his thesis in fall 2015. So far two pat-ents regarding this work have been issued, and more than 15 journal papers and conference papers have been published.
Hongyan Sun est né en Chine. Après avoir obtenu un baccalau-réat ès sciences (sciences appli-quées) de l’université chinoise Hebei Normal University en 2010, il poursuit ses études à l’Université du Manitoba afin d’obtenir un doctorat en physique médicale. Son projet de recherche vise à extraire la distribution d’activités et la carte de densité électronique d’une tomographie par émission de positrons. Il défendra sa thèse à l’automne 2015. Jusqu’à présent, deux brevets ont été émis relative-ment à ces travaux, sans compter la publication d’une quinzaine d’articles dans des journaux et lors de conférences.
CRPA Bulletin / Bulletin de l’ACRP Vol 36 No 2 / 39
ALARA ConsultantsAllan Seitz9556 - 27 AvenueEdmonton, AB T6N 1B2tel: 780-944-2557 [email protected]
BC Centre for Disease ControlTerry SpockMain Floor, 655 12th Ave WVancouver, BC V5Z 4R4tel: 604-707-2442fax: 604-707-2441www.bccdc.ca
Canadian Association of Medical Radiation TechnologistsMark Given Suite 1000, 85 Albert StreetOttawa, ON K1P 6A4tel: 613-234-0012fax: 613-234-1097www.camrt.ca
Energy Solutions CanadaRon LeblondHead Offi ce180 Walker Drive,Brampton ON L6T 4V8tel: 800-665-7736fax: 905-450-8523www.energysolutions.com
F & J Specialty Products Inc.F. M. Gavila404 Cypress RoadOcala, FL USA 34472tel: 352-680-1177fax: 352-680-1454www.fjspecialty.com
Gamble TechnologiesJanice LangaigneMississauga Distribution Facility6535 Millcreek Drive, Unit # 71Mississauga, ON L5N 2M2tel: 905-812-9200 or 800-268-2735fax: [email protected]; www.gtl.ca
CRPA Corporate Members /Membres corporatifs de l’ACRP
Harpell Associates Inc.David Harpell1272 Speers Road, Unit 2Oakville, ON L6L 2X4tel: 905-825-2588 800-387-7168fax: [email protected] www.harpell.ca
Hopewell Designs, Inc.Joy Garrett5940 Gateway DriveAlpharetta, GA USA 30004tel: 770-667-5770fax: 770-667-7539www.hopewelldesigns.com
J L Shepherd & AssociatesMary Shepherd1010 Arroyo AvenueSan Fernando, CA USA 91340-1822tel: 818-898-2361fax: 818-361-8095www.jlshepherd.com
KRMC Inc.Joe Cortese199 Ebbs Bay DriveCarleton Place, ON K7C 4K8tel: 778-928-2396 888-398-5762fax: [email protected]
Lambert Radiation ShieldingFred Lambert213-65Chippewa RoadSherwood Park, AB T8A 6J7phone: 780-400-9729fred@lambertradiationshielding.comwww.lambertradiationshielding.com
Lou Champagne Systems Inc.Lou ChampagneUnit 6B,1195 North Service Rd. W.Oakville, ON L6M 2W2tel: 905-338-1176fax: 905-338-6426www.louchampagnesystemsinc.com
Marshield—Division of Mars Metal Co.David Holden4140 Morris DriveBurlington, ON L7L 5L6tel: 800-381-5335fax: 905-637-8841www.marshield.comwww.marsmetal.com
Mirion TechnologiesLouis Biacchi2652 McGaw AvenueIrvine, CA USA 92614tel: 888-419-10000 or 949-419-1000, ext 2316fax: 949-296-1130www.mirion.com
National Dosimetry Services Radiation Protection BureauDan Karov775 Brookfi eld Road, 6301DOttawa, ON K1A 1C1tel: 800-261-6689fax: 613-957-8698 800-252-6272www.hc-sc.gc.ca
Full & associate members /Membres à part entière et membres associés :
• Azza HabraFederal Authority for Nuclear Regulation (United Arab Emirates)
• Alexandre LegrosSt. Joseph’s Health Care
• Samantha MasonBest Theratronics Ltd.
• Laura SayeauCameco
• Darin StreetCanadian Light Source
Student members /Membres étudiants :
• Rahaf AjajUnited Arab Emirates University
• Quentin GloaguenUniversité de Bordeaux (France)
• Baharak HadiniaMcMaster University
• Muhammad Irfan KaramatMcMaster University
• Mahmoud KhattabMcMaster University
• Humza NusratRyerson University
• Hongyan SunUniversity of Manitoba
Membership in the association is open to individuals with appropriate training who are actively engaged in some aspect of the science and practice of radiation protection.
For more information about membership, visit http://crpa-acrp.org.
Les individus ayant une formation adéquate et qui sont activement impliqués dans un aspect de la science et de la pratique de la radioprotection peuvent devenir membre de l’Association.
Pour en savoir davantage au sujet de l’adhésion, visitez http://crpa-acrp.org.
