Petrom OMV_Norm_H_1001_rom_eng_rev. 2_2008_09_15

CONDUCTE DIN OTEL

Principii de conceptie si proiectare

Norma Petrom

OMV

H 1001

STEEL PIPELINES Design and Planning Principles

Petrom OMV Standard

H 1001

Elaborat/ Compiled:

Nechifor Daniela

Verificat/ Checked:

Decusara Felicia

Eng:. 2/15.09.2008

Aprobat/ Approved:

Neil Morgan

Divizia Rafinare Petrom OMV isi rezerva toate drepturile asupra acestei documentatii si va da in judecata pe orice persoana neautorizata sa o utilizeze sau sa o transmita la terti

PetromOMV Refining Division reserves all its rights to these documents and will take legal action against anyone using them or passing them on without authorization.

Aceasta norma a fost elaborata pentru rafinariile Petrom prin prelucrarea si adaptarea Normei OMV H1001 revizie 01.04.2003 / This norm was elaborated for Petrom refineries by the processing

and adapting of norm OMV H1001 revision 01.04.2003

Capitol Cuprins Nr. pag

Point Content Page

1.0 Generalitati 3 1.0 General 3 1.1 Domeniul de aplicare 3 1.1 Scope 3 1.2 Norme si reglementari 3 1.2 Standards and instructions 3 2.0 Principii de conceptie 3 2.0 Design principles 3 2.1 Diagrame de evaluare a

conformitatii 5 2.1 Conformity assessment

diagrams 5

2.2 Categorii de conducte 5 2.2 Pipe classes 5 2.3 Imbinarea conductelor de

categorii diferite 6 2.3 Pipe class step-up 6

2.4 Tronsoane de conducte 6 2.4 Pipeline parts 6 2.5 Materiale 7 2.5 Materials 7 2.6 Calculul 7 2.6 Calculation 7 2.7 Repararea si adaptarea conductelor

11 2.7 Repair and adaptation of

existing pipelines 11

3.0 Principii de constructie 12 3.0 Design principles 12 3.1 Sisteme de intretinere 13 3.1 Maintenance systems 13 4.0 Documente de executie 13 4.0 Implementation documentation 13 4.1 Documente de executie necesare 13 4.1 Implementation documentation

to be compiled 13

5.0 Ordonarea conductelor 17 5.0 Pipeline configuration 17 5.1 Trasee 17 5.1 Pipe sections 17 5.2 Coturi 18 5.2 Bends 18 5.3 Inchideri de capat 18 5.3 Sealing ends 18 5.4 Flanse 18 5.4 Flanges 18 5.5 Organe de inchidere 19 5.5 Shut-off devices 19 5.6 Armaturi de reglare 19 5.6 Control valves 19 5.7 Planificarea montarii aparatelor

de masura si reglare 20 5.7 Planning of measurement and

control devices 20

5.8 Site de protectie 20 5.8 Protective filters 20 5.9 Discuri de separare 20 5.9 Blanks 20 5.10 Organe de inchidere si discuri

de separare la limita(terminalele) instalatiilor

20 5.10 Shut-off devices and blanks at the plant boundary

20

6.0 Elemente de ventilatie si golire 21 6.0 Venting and draining provisions 21 7.0 Supape de siguranta si conducte

de purjare 21 7.0 Safety valves and blow -off-lines 21

Pag / Page 2 Norma Petrom OMV H 1001 / Petrom OMV Standard H 1001

7.1 Supape de siguranta 21 7.1 Safety valves 21 7.2 Conducte de purjare 22 7.2 Blow-off lines 22 7.3 Elemente de blocare (inzavorare) 22 7.3 Interlocking systems 22 8.0 Conducte de aspiratie la pompe si

conducte de presiune 23 8.0 Pump suction and pressure lines 23

9.0 Conducte de abur si condens 24 9.0 Steam and condensate lines 24 10.0 Statii de agenti de exploatare 24 10.0 Equipment stations 24 11.0 Sisteme de sustinere si de prindere

a tevilor 25 11.0 Pipe supports and pipe holders 25

12.0 Curatirea conductelor 26 12.0 Cleaning pipelines 26 13.0 Protectia la coroziune 26 13.0 Corrosion protection 26 14.0 Sisteme insotitoare de incalzire 26 14.0 Heating 26 15.0 Izolatia la caldura, la frig si fonica 26 15.0 Heat, cold and acoustic insulation 26 15.1 Izolatia impotriva contactului 27 15.1 Protection against accidental contact 27 16.0 Reglementari speciale pentru

instalatiile tehnologice 27 16.0 Special regulations for process

plants 27

16.1 Apa bruta 27 16.1 Raw water 27 16.2 Apa de racire 27 16.2 Cooling water 27 16.3 Apa de alimentare cazane 27 16.3 Boiler feed water 27 16.4 Conducte DEA, sisteme insotitoare

de incalzire 28 16.4 DEA lines 28

16.5 Conditii impuse pentru gaz cu continut de hidrogen sulfurat

28 16.5 Sour gas transportation systems 28

16.6 Conducte de sulf 28 16.6 Sulfur pipelines 28 16.7 Conditii impuse pentru hidrogen 28 16.7 Hydrogen requirements 28 16.8 Racorduri de aburire 28 16.8 Steaming-out connections 28 16.9 Azot 29 16.9 Nitrogen 29 16.10 Aer pentru instrumente 29 16.10 Instrument air 29 16.11 Gaz de incalzire 29 16.11 Heating gas 29 16.12 Sisteme de facla si de reziduuri

petroliere 29 16.12 Flare and slop systems 29

17.0 Conducte subterane 31 17.0 Underground lines 31 Anexa 1 Norme si reglementari 32 Anexa 1 Standards and instructions 32

Anexa 2 Punctele ce trebuie sa fie stabilite inainte de incredintarea contractului

40 Annex 2 Summary of specifications to be agreed prior to award of contract

40

Anexa 3 Diagrame de evaluare a conformitatii

41 Annex 3 Conformity assessmenta diagrams

41

Anexa 4 Metode de verificare a elasticitatii conductelor

45 Annex 4 Methods for elasticity testing of pipelines

45

Anexa 5 Schite cu tubari tipice 47 Annex 5 Sketches of typical pipe installations 47 Anexa 6 Amplasarea ergonomica a organelor

de inchidere 60 Annex 6 Operator-friendly arrangement

of shut-off devices 60

1.0 GENERALITATI 1.1 Domeniul de aplicare Prezenta norma se aplica in cadrul Rafinariilor OMV Petrom pentru dimensionarea si proiectarea conductelor. 1.2 Norme si reglementari In coroborare cu prezenta norma se vor respecta dispozitiile, normele si directivele valabile in Romania, in varianta lor aflata in vigoare, care sunt mentionate la Anexa 1. Nu consideram enumerarea noastra ca fiind una completa. Daca intre diferitele dispozitii, reglementari, norme si directive apar diferente sau contradictii, iar aspectele respective nu sunt in mod expres clarificate prin prezenta norma, se va aplica reglementarea cu formularea cea mai restrictiva. In cazul in care prevederile se exclud reciproc, atunci se va aplica reglementarea prevazuta de legislatia romaneasca. Intra in responsabilitatea executantului sa verifice daca prevederile prezentei norme sunt adecvate scopului lucrarii respective. Aplicarea normei nu il exonereaza pe executant de raspunderea pe care o are in calitate de antreprenor profesionist si responsabil. Daca executantul are obiectii cu privire la una dintre prevederile stabilite, el il va informa imediat in scris pe angajator despre acest lucru. 2.0 PRINCIPII DE CONCEPTIE Conditiile impuse conductelor care intra sub incidenta echipamentelor sub presiune sunt stabilite in conformitate cu Directiva UE 97/23/EG, PED,transpusa in legislatia din Romania prin HG 584/2004, Prescriptiile Tehnice ISCIR in vigoare si standardele SR EN armonizate sub incidenta acestei directive. (Exceptie: conductele sub o presiune mai mica decat presiunea atmosferica nu sunt incluse in Directiva UE 97/23/EG). Conditiile impuse conductelor care, conform dispozitiilor de la art.3 (1) paragraf 4, intra sub incidenta altor reglementari sunt stabilite prin normele aferente din domeniu (de ex.SR EN 1594-2002)/(PT ISCIR- C6/2003,C10/1,2/2003) Conductele vor fi proiectate in conformitate cu cerintele tehnologice si cu particularitatile locale ale conditiilor de explotare. Pentru proiectarea conductelor, constructorul va avea in vedere asigurarea unei durate de viata de 30

1.0 GENERAL 1.1 Scope This Standard is applicable for Petrom OMV Refineries for the design of pipelines.

1.2 Standards and instructions In conjunction with this Standard, the respective specifications, standards and directives legally applicable in Romania and stated in Annex 1 should be taken into account in their currently valid form. This listing is not claimed to be complete. In the event of deviations or conflicts arising between the various specifications, standards and directives and there is no firm definition by this Standard, then the strictest formulation is to be applied in each case. Where they are mutually exclusive, then the Romanian statutory regulations will apply. The Contractor will be responsible for checking the appropriateness of this standard for the intended purpose. The application does not relieve the Contractor of his responsibility as specialist and independent entrepreneur.

If the Contractor has reservations concerning an agreed definition, then he must notify the Client of this in writing without delay.

2.0 DESIGN PRINCIPLES Specifications for pipelines for which the terms of the EU Directive 97/23/EG PED apply, transposed to Romanian legislation through HG584/2004, ISCIR Technical prescriptions in force and SR EN harmonized standards under the incidence of these directives. (Exception: pipelines for pressures under atmospheric pressure are not covered by the EU Directive 97/23/EG).

The specifications on pipelines for which other legal regulation apply in accordance with dispositions of art. 3(1) paragraph 4, are laid out in the relevant Standards (e.g. SR EN 1594-2002)/(PT ISCIR-C6/2003, C10/1,2/2003). The pipelines are to be constructed in accordance with process-related requirements and the local conditions. In the construction of the pipelines the manufacturer has to apply technical and


de ani la parametri tehnico-economici stabiliti. In conditii corespunzatoare de functionare trebuie sa se asigure posibilitatea unei exploatari continue a conductelor de min.5 ani. In proiectarea conductelor dupa criteriile de rezistenta la oboseala trebuie sa se aiba in atentie un numar de 200.000 ore de functionare In cazul in care, din motive tehnologice, materialele alese nu asigura o rezistenta la oboseala pentru 200.000 de ore de functionare, solutionarea va fi convenita cu responsabilul de proiect Petrom OMV. In principiu,sistemele de transport produs din instalatiile tehnologice vor fi executate conform ANSI, sistemele de agenti de exploatare cu PN pana la 40 vor fi executate conform DIN iar cu PN peste aceasta valoare vor fi executate conform ANSI. Exceptiile vor fi convenite cu responsabilul de proiect Petrom OMV- Pentru conducte se vor folosi armaturi cu flanse si flanse asamblate prin sudura, pentru conductele de inalta presiune armaturi cu capete sudate si, pe cat posibil, cat mai putine flanse presudate. Alte variante de executie pentru conducte de apa bruta, apa potabila si apa pentru stingere incendii (hidranti) sau pentru aer (instrumental) pot fi gasite in categoriile de conducte prevazute de Norma OMV H 3101.

Diagrama de flux tehnologic furnizeaza informatii referitoare la mediul transportat, debitul de masa, presiunile maxime de regim admise si temperaturile maxime de regim admise (parametri de lucru si de proiectare).

Pentru mediul transportat se vor stabili valorile caracteristice conform Normei Petrom OMV 303.

Diametrul nominal va fi ales in functie de debitul de masa si de viteza de curgere dorita, tinand cont si de costurile de investitie si de consumul de energie (vezi Norma Petrom OMV H 1101). In delimitarea circuitelor (zonelor) pentru verificarile de presiune in sistem vor fi luate in calcul presiunile de control ale aparatelor ce vor fi supuse testelor sub presiune (aparate vechi si noi) si presiunile de control necesare dar si posibile ale conductelor si aparatelor. Aceasta inseamna ca vor putea fi facute probe in sistem numai pentru aparatele sub presiune (conducte si aparate ) care au aceleasi presiuni de proba. Sistemele cu presiuni de proba diferite vor fi

economic criteria to take into account a service life of 30 years. With the use of the pipelines as intended, uninterrupted operation of at least five years must be possible. An endurance strength for 200,000 operational hours is to be applied for the tensile strength design of pipelines. In the event of no values for an endurance strength of 200,000 hours being available for the chosen materials for process-related reasons, the subsequent procedure is to be agreed with the Petrom OMV project manager. In principle, product-handling systems in processing plants are to be constructed in accordance with ANSI and the operating supplies systems up to PN 40 in accordance with DIN, above this in accordance with ANSI. Exceptions are to be agreed with the Petrom OMV project manager.

In principle, flange fittings and welding neck flanges are to be used for pipelines, and fittings with weld-on ends and as few welding neck flanges as possible for high-pressure pipelines. Other designs for raw, drinking and fire-fighting water as well as instrument air in-site are to be found in the pipe classes in OMV Standard H 3101.

The specifications concerning medium, mass flow rate, highest permissible operational pressures and the highest permissible operation temperatures (working and design parameters) can be found in the process flow diagram.

A medium coefficient is to be determined for the medium in accordance with Petrom OMV Standard 303. The nominal width is to be selected in accordance with the arising mass flow rate and the desired flow speed, taking into account the investment costs and the ongoing energy consumption (see Petrom OMV Standard H 1101). With the arrangement of the pressure test circuits (collective pressure tests) to be determined during the planning phase, the test pressures of equipment that is also to be pressurized (new and existing equipment) and the required as well as possible test pressures of the pipelines and equipment are to be taken into account. This means that the pressure test circuits can only consist of pressure devices (equipment and pipelines) with the same test pressures. Pipe systems with different test pressures are to be

separate (blinde sau capace sudate suplimentar). Categoriile de conducte vor fi alese din clasificarea OMV; alegerea altor categorii de conducte trebuie evitata respectiv, in caz ca este necesar, categoria respectiva va fi convenita cu responsabilul de proiect OMV Petrom si apoi clasificarea va fi intocmita in intregime de catre EXECUTANT. Pentru repararea si adaptarea conductelor existente se aplica punctul 2.7. 2.1 Diagrame de evaluare a conformitatii Pentru clasificarea conductelor se vor aplica diagramele de evaluare a conformitatii 6, 7, 8 si 9 din PED transpuse in diagramele din PT ISCIR C6,C10/1-2003 Ca execptie de la Anexa II punct 1, la diferite categorii se vor aplica obligatoriu urmatoarele metode de evaluare a conformitatii, conform HG 584/2004:

- Diagrama 6 (gaze Grupa 1) si Diagrama 8 (Fluide Grupa 1):

Pentru domeniul sub incidenta art.8 si pentru Categoriile I si II: Modul A1 Pentru Categoria III: combinatia de module B1 + F - Diagrama 7 (gaze Grupa 2) si Diagrama 9 (Fluide Grupa 2): Pentru domeniul sub incidenta art.8 si Pentru Categoria I: Modul A; peste PS = 40 bar, Modul A1 Pentru Categoria II: Modul A1 Pentru Categoria III:combinatia de module B1+ F

Observatie: Diagramele 6 9 vezi Anexa 3 fig. 1 4.

Pentru domeniul abordat la art.8 nu trebuie sa se aplice marcajul CE. 2.2 Categorii de conducte Pentru cele mai importante medii de transport, domenii de presiune si temperatura au fost elaborate clasificari ale conductelor in categoriile sintetizate in Norma Petrom OMV H 3101, care sunt verificate de catre TV Aceste categorii cuprind domeniul reglementat de DIN si ANSI. Alegerea categoriilor de conducte este in sarcina responsabilului de proiect si se face dupa criterii economice. Pentru mediile, domeniile de presiune si temperatura nespecificate in Norma Petrom OMV H 3101, se vor intocmi clasificari de conducte pentru fiecare proiect in parte, care vor fi convenite cu responsabilul de proiect al Petrom OMV si cu autoritatea de standardizare. Clasificarea in categorii noi de conducte va fi supusa unei verificari preliminare de catre institutia de control acreditata.

designed as separable (blanks or additional welded-on caps). Selection of the pipe classes to be used has to take place with reference to the Petrom OMV pipe classes; new pipe classes are to be avoided or, where necessary, to be agreed with the Petrom OMV project manager and are then to be manufactured completely by the CONTRACTOR. Point 2.7 shall apply for repair or adaptation of existing pipelines.

2.1 Conformity assessment diagrams The conformity assessment diagrams 6, 7, 8 and 9 of the PED transposed from PT ISCIR C6, C10/1-2003 diagrams. In departure from the PED Annex II Point 1, the following conformity assessment processes are to be applied mandatorily in the various categories, acc. to HG 584/2004:

- Diagram 6 (Group 1 gases) and Diagram 8 (Group 1 liquids):

For the range as stated in Section 8 and for categories I and II: Module A1 For category III: Module combination B1 + F - Diagram 7 (Group 2 gases) and Diagram 9 (Group 2 liquids): For the range as stated in Section 8 and for category I: Module A, over PS = 40 bar Module A1 For category II: Module A1 For category III: Module combination B1 + F Note: For diagrams 6 to 9, see Annex 3, figures 1 to 4. No CE marking is to be used for the range under Section 8. 2.2 Pipe classes For the most important transport medium, pressue and temperature ranges, pipe classes were compiled, summarized in Petrom OMV Standard H 3101 and checked by the initial testing laboratory of TV.These pipe classes include the DIN and ANSI range. The choice of pipe classes is the responsibility of the project supervisor and is to be carried out according to economic criteria. For medium, pressure and temperature ranges that are not stated in Petrom OMV Standard H 3101, the pipe classes for the project in question are to be established and agreed with the Petrom OMV project manager and the standardization institute. Newly-established pipe classes are to subjected to a preliminary examination by the responsible initial testing authority.


Categoriile de conducte contin urmatoarele date:

- mediul transportat si valorile caracteristice ale acestuia;

- presiunea nominala; - clasificarea domeniilor de temper. / presiune; - natura materialului; - norma de aplicare; - tipul de racordare; - diametrele nominale si domeniul de

exploatare pentru tronsoanele de conducte; - adaosurile de coroziune.

2.3 Imbinarea conductelor de categorii diferite La imbinarea conductelor (ramificatii, racorduri secundare) cu trepte diferite de presiune sau din material diferit, conducta cu treapta de presiune mai mica sau cu calitate inferioara de material trebuie sa fie conectata printr-un racord conform treptei superioare de presiune sau de calitate a materialului. Reducerea treptei de presiune se face dupa un organ de inchidere. Reducerea calitatii materialului, ca urmare a unor temperaturi mai mici la aceeasi treapta de presiune, nu necesita existenta unui organ de inchidere. Totusi, va trebui sa fie prevazuta o pereche de flanse in cazul in care materialele nu se pot suda. Toate trecerile intre trepte diferite de presiune trebuie sa fie reprezentate in diagrama P&I si in desenele de conducte. Acolo unde stuturile la rezervoare ( supape de siguranta) au o treapta de presiune mai mare decat conducta racordata, este necesar ca armatura respectiv flansa de racordare a conductei la rezervor (supapa de siguranta) sa aiba aceeasi treapta de siguranta ca si stutul rezervorului (supapa de siguranta). 2.4 Tronsoane de conducte In categoriile de conducte ( Norma H 3101) sunt mentionate tronsoanele de conducte, specificate in descrierile tehnice (Norma OMV H 3155). Aceste tronsoane au fost dimensionate conform punctului 2.5. din prezenta norma. Tronsoanele care nu sunt mentionate in Norma OMV H 3101, respectiv care nu sunt mentionate in clasificarile intocmite pentru fiecare proiect in parte, vor fi specificate de catre executant si convenite cu responsabilul de proiect Petrom OMV si cu autoritatea de standardizare. Daca trebuie sa se sudeze tronsoane cu grosimi diferite ale peretelui, se va proceda conform reglementarilor din Norma Petrom OMV H 3305 (vezi imbinarea conductelor cu grosime diferita a peretelui).

The pipe classes include the following specifications: - medium and medium index; - nominal pressure; - pressure/temperature classification; - material; - standard; - type of connection; - nominal widths and field of application of the pipeline parts; - corrosion supplements. 2.3 Pipe class upgrade In the case of connection of pipelines (junctions, extension lines) with different pressure stages or differing materials, the adaptor for the line with the lower pressure stage or material quality must be designed for the higher pressure stage or material quality. The reduction of the pressure stage is to be implemented after a shut-off device. The reduction of the material quality due to lower temperatures with unchanged pressure stage does not require a shut-off device. However, a flange pair should be provided if the differing materials cannot be welded. All pressure stage transitions must be evident from the piping & instrumentation flow diagram and the pipeline drawings. Where tank necks (safety valves) have a higher pressure stage than the connected pipeline, the fitting or the pipe connection flange on the tank (safety valve) must have the same pressure stage as the tank neck (safety valve). 2.4 Pipeline parts In the pipe classes (Standard H 3101) the pipeline parts are listed and specified in the parts descriptions (OMV Standard H 3155). These pipeline parts were calculated in accordance with Point 2.5 of this Standard. Pipeline parts which are not stated in OMV Standard H 3101 or which are not stated in the pipe classes compiled for the project in question must be specified by the Contractor and agreed with the Petrom OMV project manager and the standardization authority.

Where pipeline parts of differing wall thicknesses have to be welded, this is to be carried out in accordance with the requirements laid out in Petrom OMV Standard H 3305 (see Wall Thickness Upgrading).

Daca nu este posibila o sanfrenare, va trebui sa fie prevazuta o piesa intermediara respectiv o reductie. In principiu, pentru conducte se vor folosi armaturi cu flanse si flanse presudate, pentru conductele de inalta presiune (treapta de presiune > Categoria 1500) se vor folosi armaturi cu capete sudate si, pe cat posibil, cat mai putine flanse presudate. Alte variante de executie pentru conducte de apa bruta, apa potabila si apa pentru stingere incendii (hidranti) sau pentru aer pentru instrumente pot fi gasite in categoriile de conducte prevazute de Norma OMV H 3101. 2.5 Materiale Daca este necesar sa se utilizeze alte materiale decat cele stabilite in categoria de conducte, se va conveni cu responsabilul de proiect asupra obtinerii unui aviz de certificare pentru respectivele materiale prin intermediul institutiei acreditate de control. 2.6 Calculul In continuare sunt indicate bazele de calcul de rezistenta la suprapresiuni interne. In plus, se vor lua in considerare factorii interni si externi care actioneaza asupra conductelor (coroziune, eroziune, eforturi de intindere, oscilatii, lovituri de berbec etc). 2.6.1. Tevi Calculul conform reglementarilor cunoscute: - conducte conform HG 584/2004: Categorii de conducte DIN AD 2000 Fisa tehnica B1 Categorii de conducte ANSI ASME B 31.3 - conducte care nu intra sub incidenta HG 584/2004 de ex. SR EN 1594-2002 respectiv AD 2000 Fisa tehnica B1 2.6.2 Coturi - conducte conform HG 584/2004: Categorii de conducte DIN TRD 301 Anexa 2 Categorii de conducte ANSI ASME B 31.3 La coturile standardizate mentionate in DIN 2605-2 respectiv ANSI B 16.9 nu mai este nevoie de un calcul daca grosimea standard a peretelui de racordare a cotului nu este mai mica decat grosimea stabilita prin calcul a peretelui unei tevi drepte, din acelasi material. - conducte care nu intra sub incidenta HG 584/2004 de ex. SR EN 1594:TRD 301 Anexa 2

Where beveling is not possible, an adaptor piece or junction must be planned-in. In principle, flange fittings and welding neck flanges are to be used for pipelines, and fittings with weld-on ends and as few welding neck flanges as possible for high-pressure pipelines (pressure stage > Class 1500). Other designs for raw, drinking and fire-fighting water as well as instrument air in-site are to be found in the pipe classes in OMV Standard H 3101. 2.5 Materials Where materials other than those stipulated in the pipe classes are to be used, in agreement with the project manager a certification of the material is to be effected by the initial testing laboratory. 2.6 Calculation The following are the fundamental principles for the calculation for provision against overpressure. In addition, the internal and external influences that act on the pipeline are to be taken into consideration (corrosion, erosion, expansion forces, vibrations, pressure shocks, etc.). 2.6.1 Pipes Calculation in accordance with recognized regulations: - pipelines in accordance with HG 584/2004: DIN pipe classes:AD 2000 Code of Practice B 1 ANSI pipe classes:ASME B 31.3 - not in the HG584/2004 range: e.g.: SR EN 1594-2002, or AD 2000 Code of Practice B 1 2.6.2 Bends - pipelines in accordance with HG 584/2004: Act:DIN pipe classes:TRD 301 Annex 2 ANSI pipe classes:ANSI B 31.3 With standardized bends in accordance with DIN 2605-2 or ANSI B 16.9, calculation is unnecessary when the standardized connection wall thickness of the bend is not less than the calculated required wall thickness of a straight pipe of the same material. - not in the HG 584/2004 range:e.g.: SR EN 1594 orTRD 301 Annex 2.


2.6.3 Teuri - conducte conform HG 584/2004:Categorii de conducte DIN AD 2000 Fisa tehnica B9 Categorii de conducte ANSI: ASME B 31.3 La teurile standardizate mentionate in DIN 2615-2 respectiv ANSI B 16.9 nu mai este nevoie de un calcul daca grosimea standard a peretelui de racordare a teului nu este mai mica decat grosimea stabilita prin calcul a peretelui unei tevi drepte, din acelasi material. - conducte care nu intra sub incidenta HG 584/2004 de ex. SR EN 1594 AD 2000 Fisa tehnica B9 2.6.4 Reductii - Conducte conform HG 584/2004: Categorii de conducte DIN AD 2000 Fisa tehnica B2 Categorii de conducte ANSI ASME B 31.3 La reductiile standardizate mentionate in DIN 2616-2 respectiv ANSI B 16.9 nu mai este nevoie de un calcul daca grosimea standard a peretelui de racordare a reductiei nu este mai mica decat grosimea stabilita prin calcul a peretelui unei tevi drepte, din acelasi material. - conducte care nu intra sub incidenta HG 584/2004 de ex. SR EN 1594 AD 2000 Fisa tehnica B2 2.6.5 Calote - Conducte conform HG 584/2004: Categorii de conducte DIN AD 2000 Fisa tehnica B3 Categorii de conducte ANSI ASME B 31.3 La calotele standardizate mentionate in DIN 2617 respectiv ANSI B 16.9 nu mai este nevoie de un calcul daca grosimea standard a peretelui de racordare a calotei nu este mai mica decat grosimea stabilita prin calcul a peretelui unei tevi drepte, din acelasi material. -Conducte care nu intra sub incidenta HG 584/2004 ex.SR EN 1594 AD 2000 Fisa tehnica B3 2.6.6 Flanse Cand se utilizeaza flanse standardizate nu mai este necesar un calcul daca sunt respectate domeniile de presiune si temperatura specificate in DIN 2401

2.6.3 T-pieces - pipelines in accordance with HG 584/2004: DIN pipe classes:AD 2000 Code of Practice B 9 ANSI pipe classes:ASME B 31.3 With standardized bends in accordance with DIN 2615-2 or ANSI B 16.9 calculation is unnecessary when the standardized connection wall thickness of the bend is not less than the calculated required wall thickness of a straight pipe of the same material. - not in the HG 584/2004 range:e.g.: SR EN 1594, or AD 2000 Code of Practice B 9.

2.6.4 Reductions

- pipelines in accordance with HG 584/2004

DIN pipe classes:AD 2000 Code of Practice B 2 ANSI pipe classes: ANSI B 31.3

With standardized bends in accordance with DIN 2616-2 or ANSI B 16.9, calculation is unnecessary when the standardized connection wall thickness of the bend is not less than the calculated required wall thickness of a straight pipe of the same material. - not in the HG 584/2004 range:e.g.: SR EN 1594, or AD 2000 Code of Practice B 2.

2.6.5 Caps - Pipelines in accordance with HG 584/2004: DIN pipe classes:AD 2000 Code of Practice B 3 ANSI pipe classes:ASME B 31.3 With standardized bends in accordance with DIN 2617 or ANSI B 16.9, calculation is unnecessary when the standardized connection wall thickness of the bend is not less than the calculated required wall thickness of a straight pipe of the same material. - Not in the HG 584/2004 range:e.g.: SR EN 1594, or AD 2000 Code of Practice B 3.

2.6.6 Flanges When using standardized pipeline flanges, a calculation is not necessary when the pressure/temperature grading is in compliance

(Norma succesiva SR EN 1092-1) respectiv in ANSI B 16.5. Grosimea peretelui in zona racordului trebuie sa fie cel putin egala cu cea a peretelui tevii. La categoriile de conducte DIN Flansele cu diametre nominale pentru care nu se aplica clasificarea de temperatura si presiune din DIN 2401 (Norma succesiva SR EN 1092-1) (tipic pentru DN > 400) respectiv flansele nestandardizate se vor calcula conform DIN V 2505 (Norma succesiva SR EN 1591-1) (flansele oarbe nestandardizate se vor calcula conform AD 2000 Fisa tehnica B 5). Pentru dimensiunile mai mari etajarea presiune- temperatura a fost realizata conform DIN 2401 si introdusa in clasele de conducte OMV. La categoriile de conducte ANSI: pentru flansele nestandardizate, calculul se va efectua conform ASME (Boiler and Pressure Vessel Code Section VIII Div.1). 2.6.7 Suruburi Pentru suruburile de la imbinarile standardizate cu flansa nu mai este necesar un calcul. Pentru suruburile din imbinarile nestandardizate, calculul se va face conform AD 2000 Fisa tehnica B 7 sau SR EN 1591 respectiv ASME (Boiler and Pressure Vessel Code Section VIII Div.1) La imbinarile cu flansa intens solicitate se va analiza daca este sau va fi necesara utilizarea de prezoane. 2.6.8 Garnituri Pe langa momentul de strangere al imbinarii cu flansa se va lua in calcul presarea permisa pe suprafata garniturii. Pot fi utilizate numai garniturile specificate in urmatorul tabel:

with DIN 2401 (successor standard SR EN 1092-1) or ANSI B 16.5. The flange neck wall thickness must correspond at least to the determined pipe wall thickness. DIN pipe classes: Flanges with nominal widths for which the pressure/temperature classification in accordance with DIN 2401 (successor standard SR EN 1092-1) do not apply (typically for DN > 400) or non-standard flanges, are to be calculated in accordance with DIN V 2505 (successor standard SR EN 1591-1) (non-standard blank flanges in accordance with AD 2000 Code of Practice B 5). Where considered necessary, in the OMV pipe classes the pressure/temperature classification for the larger nominal widths was reduced compared with DIN 2401. ANSI pipe classes: Non-standard flanges are to be calculated in accordance with ASME (Boiler and Pressure Vessel Code Section VIII, Div. 1). 2.6.7 Bolts No calculation is required for bolts of standard pipeline flange connections. Bolts for non-standard flange connections are to be calculated in accordance with AD 2000 Code of Practice B 7 or SR EN 1591, ASME respectively ( Boiler and Pressure Vessel Code Section VIII, Div. I. With highly-stressed flange connections, it should be ascertained as to whether the use of stress bolts is advisable or necessary. 2.6.8 Gaskets The permissible surface pressure of the gasket is to be taken into account in relation to the tightening torque of the flange connection. Only gaskets that comply with the following table may be used:


2.6.9 Organe de inchidere si armaturi

- in conductele care intra sub incidenta HG 584/2004: conceptie, fabricatie si control conform Normelor Petrom OMV H 1001, H 3002, H 2002, H 2003, H 2004, H 2005, H 4202, H 4302 si AD 2000 Fisa tehnica A 4, EN ISO 4126 sau TRD 110 - in conductele care nu intra sub incidenta HG 584/2004: conceptie, fabricatie si control conform Normelor Petrom OMV si EN 1594 /PT-ISCIR C10/2/2003

2.6.10 Discuri de separare Calcul conform AD 2000 Fisa tehnica B 5 respectiv ASME B 31.3/ PT-ISCIR C10/2/23 2.6.11 Dilatatie, elasticitate Pentru conducte se va prezenta atestatul pentru tensiunile din intregul sistem de conducte (analiza tensiunilor).

Aceste atestate pot fi realizate dupa urmatoarele metode:

- O = Verificare fara atestare, pe baza exeperientelor in domeniu - V = verificare dupa metode simplificate (de ex.cu diagrame) - C = verificare prin calcule in sistem informatizat

Alegerea metodei de verificare se face astfel:

Domeniu de utilizare Tip de garnitura Loc de utilizare Domeniu

general Domeniu -

H2

450C Class 600

PN 40

425C Class 600

Garnitura spirala grafit, in cazuri speciale garnitura RTJ

> 450C

Class 900

> 425C

Class 900 Garnitura RTJ

Class 1500

Class 2500

Class 1500

Class 2500

Capete sudate resp.daca sunt necesare flanse: garnituri RTJ

Conducte

Domeniu de joasa temperatura

Garnitura spirala cu PTFE

Proba presiune hidraulica

Limitare automata 70C

Garnitura fibra aramid, de ex. Klinger C 4400 Dupa proba de presiune, garnitura va fi inlocuita cu cea specificata.

2.6.9 Shut-off devices and fittings

- Pipelines in accordance with HG 584/2004 Design, manufacture and testing in accordance with Petrom OMV Standards H 1001, H 3002, H 2002, H 2003, H 2004, H 2005, H 4202 and H 4302 and AD 2000 Code of Practice A4, EN ISO 4126 or TRD 110. -Not in HG584/2004 range: design, manufacture and testing in accordance with Petrom OMV Standards and EN 1594/PT-ISCIR C10/2/2003. 2.6.10 Blanking plates Calculation in accordance with AD 2000 Code of Practice B 5 or ASME B31.3/ PT-ISCIR C10/2/2-3. 2.6.11 Expansion, elasticity For the pipelines, attestation of the tensions in the complete pipeline system (tension analysis) must be provided.

These analyses can be carried out by the following methods: - O = Testing without attestation on the basis of professional experience; - V = Testing in accordance with simplified methods (e.g. with diagrams); - C = Testing with computer-aided calculation. The selection of the test method is carried our for:

Application range Type of gasket Application point General

use H2 application

450C CLASS 600

PN 40

425C CLASS 600

Spiral graphite gasket, in special cases an RTJ gasket

> 450C

CLASS 900

> 425C

CLASS 900

RTJ gasket

CLASS 1500

CLASS 2500

CLASS 1500

CLASS 2500

Welded-on, or when flanges are necessary: RTJ gasket

Pipelines

Low temperature range

Spiral gasket with PTFE

Water pressure test

Self-restriction 70C Aramid fiber gasket, e.g. Klinger C 4400 After pressure test, gasket is replaced by specified gasket.

- conducte speciale, acestea sunt conductele pentru fluide din Grupa 1 si conductele de la utilaje si racitoare de aer, conform Anexa 4 fig.1

- conducte generale, acestea sunt toate celelalte conducte, conform Anexa 4 fig.2

Calculele de dilatatie vor fi efectuate in baza unui domeniu de temperatura externa de la 20C pana + 38C (vezi Norma Petrom OMV 206) respectiv pe baza temperaturii de regim minime si maxime admise. La trasarea conductelor se va avea in vedere sa nu se depaseasca fortele si momentele maxime admise pentru aparate si utilaje. Se vor solicita constructorului utilajului date referitoare la fortele de forfecare maxime admise si la momentele racordurilor masinilor. Traseul conductelor va fi astfel ales incat dilatatia aparuta sa poata fi preluata fara tensiuni nepermise. Acolo unde este necesar, vor fi prevazute coturi suplimentare de dilatatie. Acestea vor fi amplasate pe cat posibil in pozitie orizontala. La estacadele de conducte si traverse se va avea grija sa nu se impiedice pozarea ulterioara a altor conducte.

Compensatoarele vor fi prevazute numai acolo unde, din motive de spatiu sau de pierderi de presiune, nu este posibila montarea de coturi de dilatatie. O pretensionare a conductei in stare rece va fi prevazuta numai daca trebuie sa fie impiedicate deplasari (dislocari) mai mari ale conductelor in stare calda sau daca trebuie sa fie diminuate fortele si momentele aparute in punctele de sprijin respectiv la stuturile aparatelor si masinilor. Valorile de pretensionare utilizate vor fi mentionate in desenele aferente. 2.7 Pentru repararea respectiv adaptarea conductelor existente se aplica urmatoarele: Prin repararea respectiv adaptarea conductei se intelege modificarile aduse acestora fara a modifica destinatia instalatiei respective, mediul de transport, diametrul nominal sau sistemul de asigurare. Pentru indeplinirea obligatiei de efectuare a receptiei se vor folosi diagramele de evaluare a conformitatii asemanatoare celor de la o punere in functiune a unei conducte noi (Anexa 3). Alegerea diagramelor corespunzatoare de evaluare a conformitatii se face in functie de mediul transportat, presiunea proiectata si diametrul nominal. Receptia lucararilor de reparatie la o conducta pana

- Special pipelines, namely pipelines for Group 1 fluids and pipelines to machines and air coolers, in accordance with Annex 4 Figure 1; - General pipelines, namely all other pipelines in accordance with Annex 4 Figure 2. The expansion calculations are to be based on an ambient temperature of 20C to +38C (see Petrom OMV Standard 206) or the lowest permissible and highest permissible operational temperatures. With the pipeline layout, care should be taken that the permissible forces and torques on equipment and machines are not exceeded. Data on highest-permissible shear forces and torques on machine supports is to be collected from the manufacturers of the machines. The course of the pipeline is to be chosen so that any expansion occurring can be assimilated without becoming impermissible. Where necessary, additional expansion bends are to be provided. Where possible, these expansion bends should only be planned in horizontal positions. Care should be taken that subsequent pipe relocation within pipe bridges and sleepers will not be impeded.

Compensators are only to be provided in those places where the use of expansion bends is not possible due to lack of space or pressure loss. Prestressing of the pipeline should only be carried out when major displacements of it under warm condition must be prevented or to reduce the occurrence forces and torques in the fixed points of the equipment or machine supports. The prestressing applied is to be stated in the respective drawings. 2.7 The following will apply for the repair or adaptation of existing pipelines: Repairs or adaptations are deemed to be modifications to pipelines whereby the purpose of the plant, the medium, the nominal diameter or the securing system. For the determination of the obligation to take delivery, the conformity assessment diagrams (Annex 3) are to apply in the same way as with a new release. The selection of the respective conformity assessment diagrams is carried out according to medium, design pressure and nominal diameter. Up to Category I at the highest, the acceptance


la max.categoria 1 se face de catre constructor (uzina de reparatii). In afara de acesta, va fi implicat in toate fazele receptiei reprezentantul institutiei de control acreditata pentru verificarea aparatelor sub presiune. Acesta analizeaza daca este necesara o noua verificare preliminara. La categoriile de conducte se va verifica daca este necesara o refacere a calculelor de rezistenta la oboseala (stres). Categoriile de conducte vechi (clasificarea veche) vor fi utilizate numai daca nu s-au elaborat categorii noi (o noua clasificare). Pentru incercarea de presiune hidraulica se va utiliza aceeasi presiune de control ca la verificarea initiala. Daca receptia se face prin constructor, acest lucru va fi confirmat printr-o declaratie de conformitate cu prevederile HG 584/2004/prevederile legale in vigoare. Receptia efectuata prin institutia de control acreditata va fi confirmata printr-un certificat de conformitate a conductelor. Pentru intocmirea documentelor de executie si pentru documentatia pentru lucrarile de reaparare executate se vor aplica aceleasi reglementari valabile pentru constructiile noi. 3.0 PRINCIPII DE CONSTRUCTIE

Toate datele de inaltime din cadrul instalatiei se raporteaza la nivelul acesteia (vezi Norma Petrom OMV 201). In proiectare se va tine cont de faptul ca suprafetele trebuie sa fie executate cu panta descendendenta si, prin urmare, vor prezenta diferente de nivel. Distanta dintre suprafata si marginea inferioara a unei conducte va fi astfel aleasa incat sa se asigure suficient spatiu pentru elementele de golire, dispozitivele de evacuare a condensului, demontarea suportilor ventilelor de reglare etc. Fundatiile necesare pentru constructiile de sustinere a conductelor vor fi separat analizate in functie de incarcari si se vor stabili inaltimile aferente. Fortele aparute in conducte trebuie sa poata fi preluate in siguranta de structurile de sustinere, schele, poduri de conducte etc.

La estacadele de conducte din interiorul instalatiei, care merg in afara instalatiei (offsites), inaltimea etajelor va fi corelata cu cea a estacadelor de conducte din amplasamentul exterior.

Diferenta de inaltime a etajelor podurilor estacadelor din instalatie si a celor din amplasamentele exterioare trebuie sa fie de minim 1 m si depinde si de modul de executie a zonei de trecere instalatie

of the repair to a pipeline can be carried out by the manufacturer (repair service). For repairs in excess of this the initial testing laboratory for pressure equipment is to be fully involved. The initial testing laboratory is required to check whether a new preliminary examination is necessary. With the use of pipe classes, a check is only made as to whether a repetition of the stress calculation is necessary. Old pipe classes may be used when no appropriate new pipe classes are available. For the pressure test, the same test pressure will apply as for the original pressure test. In the event of the acceptance being carried out by the manufacturer, this is to be confirmed by means of a manufacturer declaration in accordance with the legal provisions of HG 584/2004, in force. Acceptance by the initial testing laboratory is to be confirmed by a pipeline certificate. The same stipulations will apply in principle for the implementation paperwork and for the documentation of repairs as for new construction.

3.0 DESIGN PRINCIPLES

All height declarations within the plant relate to the plant level (see Petrom OMV Standard 201). During planning, care should be taken that fixed surfaces are designed with slopes and thus have a differing level. The distance between the upper and lower edge of a pipeline is to be selected so that sufficient space is available for emptying, drawing off condensate, removal of control valve cores, etc.

Any necessary foundations for pipe supports are to be dealt with separately in keeping with the loadings arising and the height dimensioned accordingly. Supports, scaffolding, pipe bridges, etc., must be capable of withstanding the forces exerted by the pipelines.

The plant pipe bridges leading to offsite facilities are to be designed to correspond to the levels of stagings of the offsite pipe bridges.

The staging height difference between the plant and the offsite pipe bridges should be at least 1.0 m and should also be dependent on the design of

the transition point of the pipelines from plant to

(insite) / amplasament exterior (offsite).

Pentru caile de acces vezi Normele Petrom OMV 201, 202, 204.

Toate cotele de inaltime din afara instalatiei vor fi indicate ca valori absolute peste nivelul marii.

3.1 Instalatii de intretinere

Capacitatea de montare si demontare a armaturilor si utilajelor trebuie sa existe fara a fi necesara demontarea altor tronsoane de conducta. Daca, din motive de spatiu, acest lucru nu este posibil, se vor folosi piese de pasuire demontabile. Acolo unde este necesar, pentru demontarea ventilelor de siguranta cu greutate mare, se vor folosi brate pivotante (de rotire) sau suporti pentru demontare. Renuntarea la bratele pivotante respectiv la suportii pentru demontare necesita acordul responsabilului de proiect OMV Petrom. La aparate si utilaje conductele vor fi astfel pozate incat deservirea si intretinerea lor sa poata fi executate in pozitia normala de lucru. 4.0 DOCUMENTE DE EXECUTIE 4.1 Documente de executie necesare Toate documentele tehnice vor fi intocmite conform Normelor Petrom OMV 301 si 310. De regula, inainte de inceperea lucrarilor de planificare, se va stabili care documente sunt desene as built originale. Daca aceste desene exista, ele vor fi prelucrate in cadrul derularii operatiilor de proiectare. Sistemul CAD va fi utilizat in prelucrarea documentelor tehnice. De regula, aceste aspecte trebuie sa fie convenite cu responsabilul de proiect Petrom OMV. In functie de necesitatea de informare, vor fi puse la dispozitia ofertantului sau a executantului lucrarilor de montaj urmatoarele documente:

- Norme Petrom OMV - Planuri de santier (amplasarea instalatiilor de

santier) - Planuri de amplasament - Planuri de montaj si planuri in sectiune in

care sa fie indicate locurile de amplasare a masinilor, aparatelor si a altor sisteme din cadrul unei instalatii

- Planuri generale pentru subteran - Caietul de sarcini

offsite facilities.

For traffic routes, see also Petrom OMV Standards 201, 202 and 204.

All altitudes outside plants are to stated in absolute values above the sea level.

3.1 Maintenance facilities

Fittings and machines must be capable of installation and removal without the need for dismantling other pipeline points. If this is not possible due to space considerations, then demountable adaptors are to be provided. Where necessary, swivel arms and lifting beams are to be provided for the dismantling of heavy safety valves and other fittings. Omission of swivel arms or lifting beams requires the agreement of the Petrom OMV project manager. With equipment and machines the pipelines are to be laid out in such a manner that operation and maintenance of the equipment and machines is possible in a reasonable position. 4.0 IMPLEMENTATION DOCUMENTATION 4.1 Implementation documentation to be compiled All technical documentation is to be completed in accordance with Petrom OMV Standards 301 and 310. In principle, before commencement of planning it should be ascertained as to which planning documentation is available as as-built drawings. If such are available, then these should be revised during the course of the planning process. When CAD is to be used, this must be taken into account in the revision of available plan documentation. In principle, this must be carried out in agreement with the Petrom OMV project manager. In keeping with information requirements, the following documentation is to be provided for the bidder or Contractor of the installation works: - Petrom OMV Standards; - Site plans (layout of site facilities); - Site plans; - Floor plans and sections indicating the location of machines, equipment and other installations within the individual plants. - Underground services plans - Schedule of works


- Diagramele P&I - Lista de conducte - Desene de conducte, si anume: planuri de

tubare, planuri de ocupare a estacadelor de conducte, izometrii, liste de piese, extrase de specificatii material

- Lista punctelor de legatura - Lista punctelor de trecere din interiorul

instalatiei in exterior (insite / offsite) - Lista aparatelor de masura, reglare si control

si a sistemelor de decompresie - Documentele de constructie a conductelor

din contractul respectiv, in care sunt furnizate date referitoare la tronsoanele pentru care in normele de executie nu exista date sau nu sunt precizate detaliile

- Norme de constructie a conductelor, care contin exemple tipice de constructie, cum ar fi desene de executie a structurilor speciale de sustinere. In cazuri speciale (proiecte de mare amploare), in completare la desenele izometrice, va fi stabilit un model de conducte.

4.1.1 Lista de conducte EXECUTANTUL va intocmi o lista de conducte conform unui formular standardizat, cu indicarea tuturor datelor solicitate, pe care o va remite spre verificare si avizare organului de control acreditat cu activitatea de control si verificare. In aceste liste vor fi inregistrate toate conductele din diagrama P&I respectiv din diagrama simplificata P&I pentru amplasamentele exterioare (Offsite).

Ele contin date referitoare la:

- Denumirea conductelor - Numarul conductei (diametrul nominal,

nr.instalatiei, nr.curent) si categoria de conducte

- Traseul conducte (de la...catre) - Numarul desenului aferent P&I si desen

izometric - Conditii de lucru: mediul transportat, starea

(lichid sau gazos), densitate, debit, viteza de curgere, temperatura, presiune

- Conditii de regim max.admise: Tmax, Pmax - Material de baza (teava) - Grosimea peretelui - Protectia la coroziune - Izolatie, sistem insotitor de incalzire - Conditii de verificare: verificarea elasticitatii,

tratament termic, verificarea duritatii, incercari nedistructive, presiune de

- Pipeline & instrumentation flow diagrams - Pipeline list - Pipeline drawings, namely: Pipeline plans, pipe bridge plans, isometric drawings, parts lists and material statements - List of linking points - Lists of transition points (in-site/offsite) - Lists of measuring and control equipment and pressure relief installations

- Assignment-related pipeline design documentation containing those specifications on parts that are not, or not in the necessary detail, included in the implementation standards for pipelines.

- Pipeline design standards that include

typical design examples, such as: Detail design drawings for special supports. In special cases (e.g. with major projects) a pipeline model can be defined in the planning order complementary to the isometric drawings.

4.1.1 Pipeline list The Contractor is required to compile a pipeline list on the printed form, stating all required data and to submit it for evaluation of the inspection requirement of the stated location for approval and which must also be entered. These pipeline lists must include the pipelines from the pipeline & instrumentation flow diagram or simplified pipeline & instrumentation flow diagram for offsite.

They will contain specifications concerning:

- Pipeline description: - Pipeline number (nominal width, plant number, consecutive number) and pipe class; - Pipeline route from to; - Respective drawing number (pipeline & instrumentation and isometric drawing); - Work conditions: Medium, state (liquid or gaseous), density, flow rate, flow speed, temperature, pressure; - Highest permissible operational conditions: Tmax, Pmax - Basic material (pipe); - wall thickness; - Corrosion protection; - Insulation, heating; - Test conditions: Testing of elasticity, heat treatment, hardness test, nondestructive tests, test pressure, test medium, certification

incercare, mediul de control, certificate de receptie finala

- Cerinte privind gradul de puritate (curatenie) a conductei

- Observatii 4.1.2 Desene de conducte De regula, acestea vor fi intocmite pentru:

- conductele de transport produs - conductele de transport agenti de exploatare

peste DN 50 inclusiv conductele de alimentare la distribuitoarele de abur

Pentru restul conductelor de agenti de exploatare si de incalzire pana la DN 40, executantul va intocmi schite de sistem. In desenele de conducte se vor indica:

- Diametrul nominal, numarul conductei si categoria conductei - Traseul conductei de la... catre (valabil

pentru desenul izometric), cu mentionarea numarului pozitiei masinilor, aparatelor si conductelor la care se racordeaza respectiva conducta. La aparate si masini se va indica si numarul stutului. Ordonarea si pozitia ramificatiilor, a punctelor de intersectare, a pieselor fasonate, a flanselor, organelor de inchidere, a armaturilor, a reazemelor standard si a celor speciale, a pieselor speciale

- Pozitia si inaltimea conductelor vor fi indicate prin coordonate si cote de inaltime - Dispunerea si pozitia conductelor subterane,

a puturilor, a traseelor de cablu, a fundatiilor, ancorajelor etc.cu cotele teoretice rezultate din montarea aparatelor si masinilor, in masura in care ele sunt necesare pentru executarea lucrarilor la nivel suprateran

- Numarul pozitiei echipamentelor de masura,

reglare si control si a componentelor speciale - Diametrul nominal, numarul conductei si

categoria conductei in punctul de trecere interior/exterior (insite/offsite) pentru ambele conducte (indicate de ex.in planul punctelor de trecere)

- Numarul desenelor de racorduri - Conditii minimale de livrare

In planurile de ocupare a estacadelor , planurile de tubare si in desenele izometrice vor fi folosite simbolurile grafice (pictogramele) specificate in Norma Petrom OMV 302 Partea 3. In primele doua tipuri de planuri se vor face

of final acceptance; - Requirements concerning purity degree (cleanliness) of pipe - Remarks 4.1.2 Pipeline drawings These are normally to be produced for: - Product pipelines; - Resource pipelines from DN 50 including the feeder lines to the steam distributors. The Contractor must draw up system drawings for the remaining resource and heating lines up to DN 40. The pipeline drawings are to include information concerning: - Nominal width, pipeline number and pipe

class; - Pipeline route from to (applies for

isometric drawings) with statement of the item number of machines, equipment and lines to which the line is connected. With equipment and machines, the respective connecting piece number.Configuration and location of branch circuits and nodes, shaped parts, flanges, shut-off devices, fittings, standard and special supports, special parts.

- The position and height of pipelines are to be stipulated by coordinates and height indications.

- Configurations and location of underground pipelines, shafts, cable routes, foundations, anchorages, etc., with the theoretical masses derived from the layout of the equipment and machines insofar as these are necessary for the overground implementation.

- Item numbers for measuring and control equipment, special parts, etc.

- Nominal diameter, pipeline number and pipe class at the transition point offsite/plant for both pipelines (e.g. in pipeline transition point plan).

- Connection drawing numbers - Delivery limits.

In pipe bridge layout drawings, pipe installation drawings and isometric drawings, graphic symbols are to be used in accordance with Petrom OMV Standard 302 Part 3. In the two first-stated drawings, the graphic


reprezentari la scara. In toate planurile mentionate va fi indicata pozitia sistemului de actionare (de ex.arbore/ roata de mana/ motor). Izometriile vor fi astfel intocmite incat sa poata fi inregistrate toate informatiile necesare pentru intocmirea documentatie pentru sudarea conductelor (vezi Norma Petrom OMV H 3001). 4.1.3 Diagramele de flux pentru conducte si instrumente Diagrama de flux P&I se intocmeste pe baza diagramei de flux tehnologic. Pentru zona amplasamentelor exterioare (Offsites), in loc de diagrama P&I se poate intocmi o schema-bloc sau o diagrama P&I simplificata. In diagrama P&I vor fi reprezentate toate echipamentele tehnice ale unei instalatii. Toate digramele vor fi intocmite conform Normei Petrom OMV 302. 4.1.4 Lista de piese pentru tronsoane de conducte (formular standardizat) In acestea se vor specifica:

- numarul conductei - denumirea - traseul conducte (de la ..catre) - clasa conductei - numarul piesei - diametrul nominal - denumirea tronsoanelor ce urmeaza a fi

utilizate si cantitatea de tronsoane fara rezerva de constructie, ultima cantitate specificata fiind cea valabila

4.1.5 Listele de montaj al tronsoanelor de conducte (formular standardizat) In acestea vor fi indicate cantitatile necesare, sortate pe liste de piese. Pe langa indicarea numarului fisei pentru respectiva lista de piese, listele de montaj vor avea aceleasi rubrici ca si listele de piese pentru tronsoanele de conducte. De asemenea, cantitatea inregistrata ultima data va ramane cea valabila. 4.1.6 Devizul pentru constructia de conducte Daca nu este altfel convenit, pentru lucrarile de montaj conducte se va intocmi un deviz. Fiecare mod de amplasare al pieselor si materialelor va fi convenita cu responsabilul de proiect OMV Petrom.

symbols are to be entered in full scale. The location of the drive (e.g. spindle, hand-wheel, motor, etc.) is to be stated in all the above-stated drawings.

Isometrics are to be configured in such a way that all information necessary for the welding documentation of the pipeline can be entered (see Petrom OMV Standard H 3001). 4.1.3 Pipeline and instrumentation flow diagram The process flow diagram is the basis for the pipeline and instrumentation flow diagram. A clock diagram or simplified pipeline and instrumentation flow diagram can be use instead of the pipeline and instrumentation flow diagram in the offsite area. The complete technical equipment of a plant is to entered in the pipeline and instrumentation flow diagram. All flow diagrams are to be drawn up in accordance with Petrom OMV Standard 302. 4.1.4 Pipeline components parts lists (standard form) These are to include the following:

- pipeline number; - designation; - pipeline route from to; - pipe class; - part number; - nominal width; - description of the pipeline parts to be

used as well as their required quantity without building reserves, whereby the last-entered quantity is applicable. 4.1.5 Pipeline components parts lists (standard form) In these, the required quantities are to be stated, sorted over several parts lists. Apart from stating the respective parts list sheet numbers, the listings must indicate the same column configuration as the pipeline components parts lists. Once again, the last-entered quantity is applicable. 4.1.6 Pipeline construction schedule of works Where not otherwise agreed, a schedule of works is to be drawn up for the pipeline construction works. The respective type of raw material listing is to be agreed with the Petrom OMV project representative.

5.0 DISPUNEREA CONDUCTELOR Dispunerea conductelor trebuie sa fie vizibila, pe criterii economice si in general dispusa pe 3 directii principale, in unghi drept una fata de cealalta (diferenta de inaltime a etajelor, de regula 1 m). Vezi Norma Petrom OMV 201. Daca conductele sunt pozate pe grinzi transversale sau pe constructii metalice, reazemele vor fi executate ca aparate de reazem de alunecare, ca aparate de reazem cu rol de ghidare sau ca puncte(reazeme) fixe. Pentru distanta intre centrele conductelor vezi Norma Petrom OMV H 1201 iar pentru izolatie vezi Norma Petrom OMV L 1001. Conductele de pe estacade nu vor fi asezate pe stalpii de sustinere a estacadei, pentru ca este posibila supraetajarea (supraincarcarea) ulterioara a estacadei. Etajarea conductelor in estacade (de ex. de la etajul 1 la etajul 3) va fi executata in asa fel incat etajarea sa nu impedimenteze tubarile executate ulterior sau sa le faca imposibil de executat. In acest caz etajarea se va face in exteriorul estacadelor. Nu este admisa schimbarea directiei de pozare a conductei sau executarea coturilor de dilatatie fara etajare. Se va evita fixarea reazemelor de conductele invecinate. Fac exceptie conductele din sistemul insotitor de incalzire, conductele de impuls sau alte solutii speciale convenite cu responsabilul de proiect OMV Petrom. Imbinarea tronsoanelor de conducta va fi realizata prin sudare. Flansele vor fi utilizate numai pentru racordarea la aparate, utilaje si armaturi. Perechile de flanse vor fi folosite numai in locurile unde acestea sunt necesare din motive tehnologice. La conductele zincate si cu acoperire pe interior, imbinarile vor fi convenite cu responsabilul de proiect Petrom OMV. Pentru conductele care, din motive tehnologice, trebuie sa fie executate in panta descendenta continua, se vor indica in specificatia tehnica ordonarea si modul de executie a reazemelor. Trasarea conductelor care transporta medii cu tendinta de condensare va fi realizata pe cat posibil fara puncte de adancime (nivel minim) pentru a evita acumularea de lichid. Vor fi prevazute elementele de golire necesare. 5.1 Traseele de conducte Acoperirea traseelor va fi conform Normei Petrom OMV 201 si se va intreprinde in felul urmator:

5.0 PIPELINE CONFIGURATION The configuration of pipelines must be clearly laid-out, cost-effective and generally arranged in three main directions at right-angles to one another (level height difference normally 1.0 m). See also Petrom OMV Standard 201. If pipelines are laid on sleeper beams or on steel structures, the bearers are to be designed in the form of sliding bearings, pilot bearings or fixed points. For pipe center-to-center distances see Petrom OMV Standard H 1201, for insulation see Petrom OMV Standard L 1001. Pipelines on pipe bridges must not be arranged over pipe bridge uprights so that subsequent augmentation of the pipe bridge (overloading) is possible.

The raising of pipelines in pipe bridges (e.g. from the 1st to the 3rd floor) is to be carried out in such a way that subsequent pipe installations are not impeded or made impossible by this staging. Here, the staging must be implemented outside the pipe bridge. Implementation of change of direction or expansion bends without staging is not permitted. The fastening of pipe suspension systems to neighboring pipelines should be avoided. Exceptions are heating systems, pulse lines or special solutions agreed with the Petrom OMV project manager. Connections between pipeline parts are to be carried out by welding. Flanges are only to be used for connection to equipment, machines and fittings. Flange pairs are only to be installed at points where they are deemed necessary for operational reasons. With galvanized and internally coated pipelines, the type of pipeline connections are to be determined in collaboration with the Petrom OMV project representative. With pipelines which must be implemented with a continuous downward gradient, the configuration and constitution of the pipe supports are to stated in the technical specification. In the case of media with a tendency towards condensation, where possible the pipeline route should be without low points in order to avoid liquid locks. Provision for drainage is to be provided where necessary. 5.1 Pipe routes

The assignment of pipe routes is to be carried out in accordance with Petrom OMV Standard 201 as


Conductele de abur si de condens vor fi pozate la marginea traseului, pe partea mai usor accesibila. In continuare vor fi pozitionate restul conductelor de agenti de exploatare si in final conductele de transport produs. Se recomanda pozarea conductelor de agenti de exploatare pe etajul inferior al podurilor de conducte si pozarea conductelor de facla pe etajul superior. Conductele care isi modifica forma din cauza dilatatiei termice vor fi pozate cu distanta suplimentara prevazuta de Norma Petrom OMV H 1201. La conductele cu flanse cu diafragme de masura se va verifica traseul, pentru a se asigura spatiu suficient pentru conductele instrumentelor si pentru efectuarea operatiilor de intretinere. Tronsoanele de intrare si de iesire in dispozitivul de masura vor fi trasate rectiliniu, cu lungimile necesare. 5.2 Coturi Pe cat posibil , vor fi prevazute coturi standardizate. In conditii normale, pentru montajul conductelor se utilizeaza coturi de 90 > DN 25 si coturi de 45 > DN 50 (sub forma de coturi de 90 care se pot separa). Coturile de dimensiuni mici pot fi realizate prin indoirea la cald a tevilor. In cazuri speciale convenite intre parti se pot folosi tevi din materiale nealiate 15 Mo3 si cu diametre nominale mai mari, care sunt deformate la cald respectiv la rece. Exemplu: deformarea tevilor cu < DN 80, cu ajutorul arzatoarelor manuale, respectand temperatura de prelucrare la cald. Tevile din otel aliat nu pot fi prelucrate nici la cald nici la rece fara o aprobare speciala. 5.3 Inchideri de capat Daca se are in vedere o extindere ulterioara a conductei sau daca este necesara curatirea acesteia, vor fi prevazute flanse oarbe, in caz contrar conductele vor fi inchise la capete cu capace de teava. Din motive de corodare se va evita inchiderea tronsoanelor fara scurgeri de tranzit. 5.4 Flanse Flansele vor fi astfel amplasate incat sa se asigure accesul la ele. Este permisa strangerea ulterioara a imbinarilor cu flansa cu ajutorul instrumentelor mobile de montaj, in functie de particularitatile locale, de frecventa utilizarii si a intretinerii. In cazul in care exista riscuri pentru personalul operativ (in zona trecerilor, podetelor, scarilor), la conductele de transport substante periculoase sau

follows: Steam and condensate lines must be laid on the edge of the most easily accessible side of the pipe route. In further succession the remaining resource pipelines are to be laid and finally the product pipelines are to be located. Every effort should be made to plan the resource pipelines on the lowest pipe bridge level and the flare pipeline on the uppermost level. Pipelines that change their status due to heat expansion should be provided with additional spacing in accordance with Petrom OMV Standard H 1201. On pipelines with metering pipe flanges, the pipeline route must be checked to ensure sufficient spacing for instrument lines and maintenance works. The input and output routes must run straight for the lengths technically necessary for measurements. 5.2 Bends The most standardized possible bends are to be used in designs. Normally for the assembly of pipelines, 90 bends DN 25 and 45 bends DN 50 (in the form of a spaced-out 90 bend) are to be planned. Bends with smaller dimensions are to be formed by hot-bending the pipes. In agreed special cases, also pipes with greater nominal width in unalloyed materials and 15Mo3 can be hot- or cold-shaped. For example, pipes with nominal widths DN 80 can also be shaped by means of manual torches while maintaining the hot processing temperature. Pipes of alloyed steel may be neither hot- nor cold-shaped without special permission. 5.3 End closures If a subsequent extension of the pipeline can be expected or cleaning will be necessary, then blank flanges are to be provided, otherwise the ends of pipelines are to be closed off with pipe caps. Pipeline sections without throughflow are to be avoided for corrosion reasons. 5.4 Flanges Flanges in pipelines are to be arranged so as to be accessible. It is permissible that the subsequent tightening of flange connections is carried out usingmobile assembly assistance in relation to the local situation or operational and maintenance frequency.In the event of a possible hazard to persons (in the vicinity of passageways, platforms, ladders, etc,), the flange connections of pipelines that carry

toxice respectiv lesie si acizi, imbinarile cu flansa vor fi prevazute cu carcase de protectie la stropire (vezi Norma Petrom OMV 202). De regula acestea trebuie sa fie din plastic. Produsul ce urmeaza a fi utilizat va fi convenit cu responsabilul de proiect OMV Petrom. 5.4.1 Rugozitatea la flansele de conducte si la armaturi Tinand cont de cerinta ca la flanse ratele de scurgere sa fie mici, se vor folosi flanse DIN cu element de etanseitate in forma de E, rugozitate medie Rz = 16 m pe zona strunjita si flanse conform ASME/ANSI B 16.5 model Raised Face cu o valoare de rugozitate in centru Ra = 125 inch pana la 250 inch. 5.5 Organe de inchidere 5.5.1 Selectia Alegerea organelor de inchidere se va face conform celor indicate in clasele de conducte. Organele de inchidere intre conducte, sisteme sau aparate cu parametri diferiti de exploatare vor fi alese dupa categoria cu parametri maxim admisi. 5.5.2 Ordonarea si accesul la organele de inchidere Organele de inchidere trebuie sa fie astfel montate incat sa poata fi posibila deservirea sau intretinerea de la nivelul solului sau de pe o platforma (vezi Anexa 6 fig.1 si 2 si Norma Petrom OMV 202 pct.4.0). Dupa posbilitati, se vor evita rotile dintate (roti de lant) sau elementele de prelungire a arborilor, tijelor etc. Organele de inchidere de pe poduri de conducte sau traverse, ca si elementele de ventilatie si golire vor fi amplasate pe cat posibil grupate. 5.6 Armaturi de reglare

Armaturile de reglare de la sistemele de conducte care nu pot fi scoase din functiune vor fi prevazute cu un element de ocolire si doua organe de inchidere. Valva de bypass trebuie sa prezinte caracteristica de reglare, iar valoarea Kv/Cv sa fie la fel de mare decat cea a armaturilor de reglare. Se poate renunta la elementul de ocolire daca, in cazul defectarii ventilului de reglare, instalatia poate fi mentinuta in functiune si fara acesta. Armatura de reglare si valva de bypass vor fi astfel ordonate incat sa se evite o acumulare de lichid. La robinetii cu trei

dangerous or noxious substances, alkalis or acids are to be provided with splash protection rings (see Petrom OMV Standard 202). The splash protection rings are normally to be planned in the form of plastic rings. The brand to be used is to be agreed with the Petrom OMV project representative. 5.4.1 Roughnesses on pipeline flanges and fittings Due to the requirement for low leak rates for flanges, DIN flanges turned with raised faces as Form E, averaged roughness depth Rz = 16 m and flanges in accordance with ASME/ANSI B 16.5 in the raised face design with average roughness depth Ra = 125 inch to 250 inch are to be used. 5.5. Shut-off devices 5.5.1 Selection Shutoff devices are to be selected from those devices stipulated in the pipe classes. Shut-off devices between pipelines, systems or equipment with differing operational conditions are to be chosen in accordance with the pipe class for the highest permissible operational conditions. 5.5.2 Configuration and access Shut-off devices should be installed in such a way that operation and maintenance is possible from the ground or from a platform (see Annex 6, Fig 1 and 2 and Petrom OMV Standard 202 Point 4.0). Chain wheels and spindle extensions should be avoided where possible. Shut-off devices on pipe bridges and in sleepers as well as venting and discharge provisions should be arranged in groups where possible.

5.6 Control fittings

Control fittings in pipe systems that cannot be taken out of service are to be provided with a bypass arrangement and two shut-off devices. The bypass valve must have control characteristics and its Kv/Cv value must be equivalent to that of the control fittings. This bypass fitting can be dispensed with when the operation of the plant can also be maintained without the bypass fitting when the control valve malfunctions. The control fitting and the bypass are to be arranged so as to avoid accumulations of


cai se va stabili in mod special modul de ocolire. Se vor lua masuri de asigurare a elementelor de golire, de degajare a presiunii si de purjare (suflare) Se va asigura un bun acces la flansa de baza a ventilului de reglare. 5.7 Planificarea montarii aparatelor de masura si

reglare Pentru montarea diafragmelor se vor dimensiona tronsoanele de intrare si iesire conform DIN EN ISO 5167-1. De asemenea, se vor lua in calcul distanta laterala fata de conductele invecinate, pozitia conexiunilor de impuls (stuturi) si a recipientilor de condens si de separare. La contoare se va tine cont de accesibilitate, demontarea in fata si in sus, ca si de tronsoanele de intrare si iesire la acestea. Dimensionarea tronsoanelor de intrare si iesire se va face in conformitate cu reglementarile aferente pentru aparatele de masura si reglare. Debitmetrele cu plutitor vor fi montate vertical iar debitul de tranzit trebuie sa se execute de jos in sus. 5.8 Site de protectie Sitele de protectie vor fi prevazute numai in conductele orizontale. Din cauza cotelor de montaj mari, ele vor fi montate intr-un unghi de 45 orientare in jos. Sitele si captatoarele de impuritati vor fi planificate in functie de necesitatile de exploatare (cu posibilitate de demontare a cartusului). 5.9 Discuri de separare Discurile de separare necesare pentru exploatarea instalatiei sunt mentionate pe diagrama P&I respectiv pe diagrama simplificata P&I pentru amplasamentele in exterior (offsites). Discurile de separare vor fi realizate conform Normei Petrom OMV H 2401,2402 si H 1355. Pentru rafinarie se aplica prevederile prescriptiei interne Montarea si demontarea discurilor de separare. 5.10 Organe de inchidere si discuri de separare la marginea (terminalul) instalatiei La trecerea de la conductele instalatiei la zona exterioara (offsite) se vor amplasa, in conditii normale, organe de inchidere cu discurile de separare tip ochelari plasate inainte sau dupa organul de inchidere, in functie de necesitati.

liquids. With 3-way valves, the nature of the bypass is to be defined separately. Provision is to be made for appropriate draining, pressure release and blow-out requirements. Attention should be paid to good accessibility for the base flange of the control valve. 5.7 Planning of measurement and control devices With the planning of apertures, input and output sections are to be dimensioned in accordance with DIN EN ISO 5167-1. The lateral distance to the neighboring pipelines, the locations of the pulse sampling necks (nozzles) as well as the condensate and separator containers are to be taken into account. With meters the accessibility, the forward and upward removal as well as the input and output sections are to be taken into account. Dimensioning of the input and output sections is to be carried out in accordance with the respective regulations for the measurement and control devices. Float-type flow meters are to be planned in a vertical position and the throughflow must take place from bottom to top. 5.8 Protective filters Protective filters are only to be planned in horizontal pipelines. Due to the large mounting dimensions they are to be arranged downwards at an angle of less than 45. Filters and dirt traps are to planned in such a way as to simplify operation (possibility of removing cartridges). 5.9 Blanking plates Information on the blanking plates necessary for plant operation is to be found in the pipeline & instrumentation flow diagram or the simplified offsite pipeline & instrumentation flow diagram. The blanking plates are to be constructed in accordance with Petrom OMV H 2401, 2402 and 1355. For the refinery the regulation of the works management Setting and drawing blanking plates will apply. 5.10 Shut-off devices and blanking plates on the plant perimeter Shut-off devices with spectacle blinds are normally to be arranged before or after the shut-off device at the transition from plant pipelines to the offsite area in accordance with plant requirements.

Daca sunt necesare armaturi de refulare, acestea vor fi montate suplimentar, pe partea cu instalatia. Toate componentele (armaturi, imbinari cu flansa, discuri de separare) necesare in zona de trecere interior / exterior (insite/offsite) vor fi specificate si executate constructiv de catre EXECUTANT. Cordoanele de sudura din marginea zonei de trecere vor fi executate pe suprafata din zona din interiorul instalatiei (insites). Limita de livrare a domeniului Offsites se termina inainte de contraflansa armaturii (prevazuta Insites) respectiv a discului de separare. Conductele trebuiesc prevazute cu punct fix in interiorul instalatiei (Insites ).

6.0 ELEMENTE DE VENTILATIE SI GOLIRE In toate punctele de nivel maxim respectiv minim, conductele vor fi prevazute cu posibilitati de aerisire si golire (in functie de conditiile locale, pot fi necesare si stuturi de aspiratie). Organele de inchidere vor fi prevazute la capatul liber cu o flansa oarba. Orificiile de aerisire care sunt necesare numai pentru probele de presiune hidraulica respectiv daca mediul de transport este apa, nu vor fi prevazute cu un organ de inchidere ci numai cu flansa si flansa oarba.

Conductele de decompresie (detenta) si de golire a aparatelor si masinilor care transporta gaz lichefiat vor fi prevazute cu inchideri duble. 7.0 SUPAPE DE SIGURANTA SI CONDUCTE DE PURJARE 7.1 Supape de siguranta (vezi Norma Petrom OMV H1001 si H3001) La supapele de siguranta care nu sunt montate direct la rezervorul sau la sistemul de conducte asigurat se va calcula suplimentar pierderea de presiune in conducta de intrare si de iesire (alimentare si evacuare).

Where non-return valves are necessary for process requirements, then these are to be planned additionally in on the plant side. All necessary installations (fittings, flange connections, blanking plates, etc.) on the transition point to the offsite area are to be specified and structurally implemented by the CONTRACTOR. The welding joint on the delivery perimeter is to be included in the in-site scope of services. The delivery limit of the offsite area ends before the counterflange of the shut-off device or the blanking plate to be provided by the plant. The pipelines are to be formed on the plant side with a fixed point on the plant perimeter.

6.0 VENTING AND DRAINAGE PROVISIONS Venting and drainage facilities are to be provided at all high and low points of the pipelines (depending on local conditions, extraction connector pieces may also be necessary). The shut-off devices are to be provided with a blind flange at the free end. Venting provisions that are only required for water the water pressure test or for the medium water do not require a shut-off device but rather merely a flange and blind flange. Depressurizing and draining lines of equipment and machines handling liquid gas will be fitted with double shut-off devices. 7.0 SAFETY VALVES AND BLOWING-OFF LINES 7.1 Safety valves (see Petrom OMV Standards H 1001 and H 3001) With safety valves that are not located directly on the secured vessel or pipe system, the pressure loss of the input or output line is to be checked. The nominal width is to be designed so that the overall pressure loss of the line between the


Diametrul nominal va fi astfel conceput incat pierderea totala de presiune in zona dintre aparatul asigurat si flansa de intrare a ventilului de siguranta sa nu ajunga la 3 % din presiunea reglata. Se va lua in calcul debitul max.de purjare a ventilului de siguranta si nu debitul proiectat. Conductele de iesire din ventilul de siguranta trebuie sa aiba cel putin diametrul nominal al flansei de iesire. La tronsoanele de conducte care pot fi inchise (blocabile), vor fi prevazute ventile de siguranta pentru asigurarea la dilatatia termica a mediului transportat. Inainte si dupa ventilele de siguranta nu trebuie sa fie montate discuri de separare. 7.2 Conducte de purjare Purjarile libere pot fi facute numai la mediile care nu sunt toxice, inflamabile si care nu au miros neplacut. Aceste conducte trebuie sa se situeze la min.3 m desupra zonei de deservire. In alegerea vitezei admise de evacuare trebuie sa se tina cont de poluarea sonora si, daca este nevoie, vor fi prevazute amortizoare de zgomot. Orificiile de purjare vor fi astfel amplasate incat sa se evite punerea in pericol a personalului si deteriorarea altor tronsoane.

Fixarea acestor conducte trebuie sa fie foarte buna (sa se acorde atentie fortelor de reactiune din timpul functionarii).

Pentru evitarea acumularilor de lichid, la conductele de purjare cu abur sau la cele la care este posibila o acumulare de apa (din cauza umiditatii aerului) va fi prevazut un orificiu cu diametrul de 10 mm in punctul de inaltime minima a conductei. La aceste orificii vor fi prevazute tevi cu min.DN 20 din motive de siguranta, doar daca personalul poate fi pus in pericol de evacuarea condensului. Daca un ventil de siguranta purjeaza in sistem inchis, conducta de purjare va fi pozata cu panta descendenta. Ventilul de siguranta trebuie sa fie montat deasupra acestei conducte colectoare.

7.2 Elemente de blocare (inzavorare)(vezi Norma Petrom OMV H 1002 si H 3002) Acestea trebuie sa fie amplasate acolo unde n + 1 ventile de siguranta asigura acelasi sistem. Acestea trebuie sa asigure faptul ca n ventile de siguranta raman in functiune si ca organele de inchidere din fata si din spatele ventilului ce urmeaza sa fie demontat sunt inchise in acelasi timp. In functie de posibilitati, vor fi prevazuti robineti de dirijare, robineti cu trei cai sau sisteme cu sine. Sectiunea transversala a fluxului de curgere prin aceste elemente in momentul procesului de comutare / inversare trebuie sa fie egala cu sectiunea de purjare

secured equipment and the entry flange of the safety valve does not reach 3% of the set pressure. For this, the maximum blow-off volume of the safety valve is to be applied and not the design volume. Safety valve outlet lines should have at least the nominal width of the outlet flange. With closable pipeline sections, safety valves must be provided to protect against the thermal expansion of the medium. No blanking plates may be planned-in either upstream or downstream of safety valves. 7.2 Blow-off lines Free blow-off procedures may only be used for non-toxic, non-combustible and non-malodorous media. These blow-off lines must be situated at least 3 meters over the operating level. In the choice of permissible exhaust speed the resultant noise pollution is to be taken into account, and where necessary sound absorbers are to be provided. Blow-off lines are to be located in such a way that there is no risk of injury to persons or interference with other plant parts.

Care should be taken that the lines are properly fastened (take into account any reaction forces during operation!)

To avoid fluid accumulations, steam blow-off lines and lines where water can collect (due to air humidity, etc.) are to be provided with 10 mm bore holes at the lowest point of the line. Only if the accumulated condensate could endanger persons, pipelines of at least DN 20 are to be provided for these bore holes for safety reasons. Where safety valves blow into a closed system, then this blow-off line must be laid with a downward gradient. The safety valve must be located above this collector pipe.

7.3 Locking systems (see Petrom OMV Standards H 1002 and H 3002) Locking systems must be arranged where n + 1 safety valves protect the same system. This locking system should ensure that there are always n safety valves in operation and the sut-off devices upstream and downstream of the safety valve to be removed are closed simultaneously. Where possible, shuttle valves, 3-way valves or slide locking systems are to be provided. These shut-off devices must indicate the blow-off cross-section of the safety valve in the flow cross-section during the switchover procedure, even in

a ventilului de siguranta.

Acolo unde montarea acestor elemente nu este posibila, vor fi prevazute, de comun acord cu responsabilul de proiect OMV Petrom sisteme mecanice de zavorare cu lant inoxidabil.

Ventilele de siguranta care fac descarcarea in sistem de facla sau in alt sistem inchis, care nu poate fi scos din functiune, vor fi prevazute cu elemente de blocare pe partea de intrare si de iesire. Exceptiile vor fi convenite cu responsabilul de proiect OMV Petrom. 8.0 CONDUCTE DE ASPIRATIE LA POMPE SI CONDUCTE SUB PRESIUNE

8.1. O reducere a unei conducte orizontale de aspiratie la stutul pompelor pate fi realizata printr-o reductie excentrica aliniata in partea de sus. In conductele pentru lichide cu continut de corpuri solide sau pentru gaze care se pot condensa, reductiile vor fi aliniate in partea de jos. Intre organele de inchidere si pompe vor fi prevazute in conducta piese intermediare demontabile. Piesele intermediare care trebuie sa fie demontate pentru efectuarea operatiilor de intretinere nu vor fi prevazute cu suporti. Nu vor fi depasite fortele si momentele admise la stuturile masinilor, indicate de constructor. Dupa caz, vor fi prevazuti suporti de teava reglabili.

8.2. Sitele si captatoarele de impuritati vor fi marcate pe diagramele P&I. In conductele de aspiratie de la compresoare vor fi prevazute site sau filtre. Cartusele sitelor trebuie sa fie usor de montat si demontat.

8.3. Pe partea de presiune si de aspiratie la pompe, organele de inchidere respectiv dispozitivele de retinere incepand de la DN > 200 trebuie sa aiba acelasi diametru nominal ca si stutul pompei, cu conditia ca prin aceasta sa nu fie influentate valorile caracteristice ale pompei. Viteza de curgere a lichidelor pe partea de aspiratie trebuie sa fie de aprox.1m/sec. iar pe partea de presiune, de aprox.2 m/ sec. Daca stutul pompei are un diametru nominal mai putin utilizat (de ex. DN 65, 125 etc), se va face largirea la diametrul imediat superior, respectiv se vor utiliza dimensiunile corespondente comportarii hidraulice a fluidului vehiculat. Daca este necesara o cursa lenta de inchidere, se va folsi drept dispozitiv de retinere un ventil de retinere cu duza.

an awkward position.

Where these locking systems are not possible, then in agreement with the Petrom OMV project manager a stainless steel cylinder lock should be provided.

Safety valves that blow off into the flare system or another closed system that cannot be taken out of service are to be lockable at the inlet and outlet sides. Exceptions are to be proposed and agreed with the Petrom OMV project manager. 8.0 PUMP SUCTION AND PRESSURE LINES 8.1 A reduction of a horizontal suction line at the pump connecting piece is to be implemented by means of an upwards-aligned eccentric reduction piece. In pipelines for liquids with solid components and for gases that can condense, the eccentric reduction pieces are to be aligned downwards. Dismantleable adaptors are to be provided in the pipeline between the shut-off devices and the pumps. No connecting pieces may be fitted to dismantleable adaptors that are removed for maintenance purposes. The permissible forces and torques stated by the machine manufacturer may not be exceeded on machine connecting pieces. Adjustable pipe supports are to be provided where necessary. 8.2 St

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Petrom OMV_Norm_H_1001_rom_eng_rev. 2_2008_09_15

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