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From: Watson, BruceSent: Wednesday, April 20, 2011 2:58 PMTo: Watson, Bruce; Hoc, PMT12Cc: Hart, MichelleSubject: RE: Point of Contact for NARAC

On 4/20/11 I emailed John Nasstom that the Sandia contact is Randy Gauntt. This task is closed.

Bruce A. Watson, CHPChief - Reactor Decommissioning BranchUS Nuclear Regulatory CommissionRockville, MD 20852301-415-6221 Office

From: Watson, BruceSent: Wednesday, April 20, 2011 12:51 PMTo: Hoc, PMT12Cc: Hart, MichelleSubject: RE: Point of Contact for NARAC

4/20/11 @1300: 1 called John Nasstrom at NARAC to follow up on his request from last week. John confirmedthat He was aware thru his contacts with DOE in Japan that Sandia NL was working for NRC on possiblyrecreating the source terms using MELCOR. He asked that if we had any specific contact names in Japan, hewould contact them otherwise he would depend on his DOE contacts.

Bruce A. Watson, CHP

Chief- Redctor Decommissioning BrarchUS Nuclear Regulatory CommissionRockville, MD 20852301-415-6221 Office

From: Hoc, PMT12Sent: Friday, April 15, 2011 9:26 AMTo: Watson, BruceSubject: RE: Point of Contact for NARAC

Bruce

Thanks for the update. Keep those cards and fetters coming - so we can keep the ET advised of the situation and knowwhen we have completed the action.

Sandi WastlerPMT/PAAD

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from: Watson, BruceSent: Friday, April 15, 2011 6:52 AMTo: Hoc, PMT12; Steve LaVie; Hart, MichelleCc: Hiland, Patrick; Gibson, Kathy; Rosenberg, Stacey; Wastler, SandraSubject: RE: Point of Contact for NARAC

PMT,

Disregard the previous email, somehow I send it before completing the message. I hope this clarifies anyissues.

Here is the chronology of events:

On 4/13 at 8:52 PM, the PMT sent an email to the RAADs requesting that one of us call NARAC. After gettingclarification from Kathy Brock, PMT on 4/11 around 1030 AM, I called NARAC to set up a call with JohnNasstrom.

On 4/14 at 1342, Michele and I requested Kathy Brock send out the following email based on our conversation

with John Nasstrom.

Hello RST and Japan Team,

Can you please respond to these two questions to assist the staff in answering a question from NARAC on thedevelopment of new source terms. Please respond to ali. NRC staff points of contact are Bruce Watson and MichelleHart. This is not an action, just a question - we are just looking for information.

* Do we have anyone recreating the source term from the reactors and SFP based on plant conditions or fieldmeasurement readings?

* Are there updates on releases or degree of core damage based on plant data?

After K. Brock's email, I decided to document our conversation with NARAC which is my - 1430 email as

follows: On 4/14 at 1245, Michele Hart and I had a call with John Nasstrom at NARAC. At the request ofDOE/OSTP (Dr. Fetter at the White House). NARAC is attempting to recreate the source term/releases fromFukushima using deposition data. NARAC would like to know if the NRC-RST or the Japan Team have tried torecreate the source termrfreleases and would be share the data with them. John will email the 4/12 Japanpress release citing their source term estimates. He will also email the Dr. Fetter's spreadsheet comparingsource terms; the Japan estimates, the IAEA estimate. and what John believes is the NRC Realistic Plausiblecase.

(b)(5)

Bruce A. Watson, CHPChief - Reactor Decommissioning BranchUS Nuclear Regulatory CommissionRockville, MD 20852301-415-6221 Office

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From: Hoc, PMT12Sent: Friday, April 15, 2011 5:20 AMTo: Watson, Bruce; Steve LaVie; Hart, MichelleCc: Hiland, Patrick; Gibson, KathySubject: RE: Point of Contact for NARAC

Bruce,

Would you mind clarifying the steps that you plan on taking in helping NARAC? There is some confusion in the PMT asto exactly what steps are going to be taken.

Than ks.

-Jessica KratchmanPMT PAAD

From: Watson, BruceSent: Thursday, April 14, 2011 2:16 PMTo: Hoc, PMT12; Steve LaVie; Hart, MichelleSubject: RE: Point of Contact for NARAC

(b)(5)

Bruce A. Watson, CHPChief- Reactor Decommissioning Branch

US Nuclear Regulatory Commission

Rockville, MD 20852301-415-6221 Office

From: Hoc, PMT12Sent; Wednesday, April 13, 2011 8:22 PMTo: Steve LaVie; Hart, Michelle; Watson, BruceSubject: Point of Contact for NARAC

All

(b)(5)

Would you be able to be the contact person for this action? Please let the PMT PAAD know as soon as possible if one ofyou can assist in this manner. Also let the PMT PAAD know if I need to send this request to your management. NR Cneeds to get back to NARAC soon.

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Sandra WastlerPMT PAAD

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USDEPARTMENTOF

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U S DEPARTMENTOF

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U S DEPARTMENTOF

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U S DEPARTMENTOFENERGYNuclear Energy

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U S DEPARTMENTOFENERGYNuclearEnergy

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Working Draft- Informationcontainedinhisdocumenthas notbeenverified.DoNOTdistributeto thepublicor outsidetheU.S.Federal Governmentcommunitystaff, contractors,andconsultants)withoutpermissionfromtheU.S.DepartmentofEnergy.CONTACT:DamianPeko phone: 301-903-7283;email:Damian.Peko@nuclear.energy.gov)

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ENERGYNuclearEnergy

b) 5)

Working Draft- Informationcontainedinhisdocumenthasnotbeenverified.Do NOTdistributetothepublicor outsidetheU.S.Federal Governmentcommunitystaff,contractors, andconsultants)withoutpermissionfromtheU.S.DepartmentofEnergy.CONTACT:DamianPekophone: 301-903-7283;email:Damian.Peko@nuclear.energy.gov)

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U S DEPARTMENTOFENERGYNuclear Energy

b) 5)

WorkingDraft-Informaton containedinhisdocumenthasnotbeenverified.Do NOTdistributetothepublicor outsidetheU.S.FederalGovernment community staff, contractors,and consultants)withoutpermissionfromtheU.S.DepartmentofEnergy.CONTACT:DamianPeko phone: 301-903-7283;email:Damian.Peko@nudear.energy.gov)

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U S DEPARTMENTOFENERGYNuclear Energy

b 5

WorkingDrafi.Informaton containedinhisdocumenthasnotbeenverified.DoNOTdistributetothepublicoroutsidetheU.S.Federal Governmentcommunity staff,contractors,andconsultants)withoutpermissionfromtheU.S.DepartmentofEnergy.CONTACT:DamianPekophone: 301-903-7283;email:Damian.Peko@nudear.energy.gov)

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U S DEPARTMENTOF

ENERGYNuclearEnergy

b) 5)

Working Draft- Informationcontainedinhisdocumenthasnotbeenverified.DoNOTdistributetothepublicoroutsidetheU.S.FederalGovernmentcommunitystaff, contractors,andconsultants)withoutpermissionfromtheU.S.DepartmentofEnergy.CONTACT:DamianPeko phone:301-903-7283;email:Damian.Peko@nuclear.energy.gov)

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Date: 3 23 Information from Fukushima Units 1-4 - NISA NRCData Analysis0600 is the Source of this Data Comments

Plant Unit 1 Unit 2 Unit 3 Unit 4(de-fueled)

Reactor - 79 gpm No data No data Current flow rates areVessel Flow likely inadequate toRate (gpm) remove decay heat.

Reactor - 5 feet 8 4 feet 4 6 feet 10 Level instrumentation isVessel Level inches inches inches suspect - reference legsBelow TAF may be less than full.(feet/inches)

Reactor 42 psig ~0 psig 5 psig to 0 Instruments U3 are notVessel psig tracking together.Pressure Zero reactor pressure(psig) would not be an

expected indication if thereactor is at saturationconditions.

Reactor 752 F 221 F 513 F Lower plenumVessel (above crit. (17 psig) (770 psig) temperature - do no tTemperature temp.) correlate to vessel

pressures - suspect data

Drywell/ 36 psia - 15.9 psia 14.5 psia There is virtually noSuppression (virtually no (no pressure indication of pressure inPool pressure pressure in in dw/sc) U2/U3. If containment(psia) dw) were intact-

expectations would befor containment to bepressurizing.

Containment Unknown Unknown Unknown Unknown Based on visualVenting observations - unit 2/3

containments may beventing steam out of the

primary containment.CAMS D/W 4600 R/hr 5200 R/hr 6050 R/hr N/ACAMS S/C 3160 R/hr 180 R/hr 175 R/hr N/ASpent Fuel Level Level Level LevelPool Level Unknown unknown unknown unknownSpent Fuel Water added Wateradded Water added TEPCO plans to do aPool Makeup via normal via overhead via overhead helicopter flight over the

injection spray spray U3/4 SFP on 3/23 to3/22 3/22 3/22 confirm SFP status.

Spent Fuel No data 124 F No data No data Reasonable SFPPool Temp. I temperature

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The Request to the US Government from the Government of Japan

25 March 2011

1. conduct of aerial survey (forAMS measurements) (sharing of the data and its analysis)[MEXT, NSC, NISA]

2. provision of radiation monitoring devices on the ground (mobile and stationary type) [MEXTNSC, NISA]

3. conduct of the simulation by the radiation diffusion model (comparison with the SPEEDIsimulation by the Japan side) [NSC, MEXTI -

4. provision of the germanium semiconductor detectors (for measuring the extent to whichwater and foods are exposed to radiation) [MEXT NISA]

5. provision of robotic devices (for monitoring) [METI, NISA, MOD]

6. provision of robotic devices (for rubble removal) [METI, NISA, MOD]

7. provision of the data (image, level of radiation) obtained by UAVs [MOD, MOFA]

8. provision of unmanned helicopter (K-MAX) [MOD, NISA, MOFA]

9. provision of the carriage of fresh water by barges and provision of the water supply pumpsfor the water [MOD, NISA, MLIT, JCG]

10. provision of high-quality pumps and hoses [NISA]

11. provision of the sets of protective body armors, radioactive survey meters and individualdosimeters, radioactive measuring instruments, masks for iodine adsorption, and separationmaterials (quantity specification to be discussed later) [NISA, MODI

12. provision of iodine preparation (iodide of potash) (quantity specification to be discussedlater with due consideration of US offer of 1 million bottles) [NISA, MHLW, MOFA]

13.provision of extinguishant / coolant [NISA]

14 provision of plastic bottles of drinkable water for the infant / baby use [MHLW

We (GoJ) would like to request further information from US Government on the following items

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to further consider the request from the government of Japan Menus/technical specs

1. UGVs (unmanned ground vehicle) [MOD, METI]

2. technical support regarding the radiation technology, nuclear technology and its effects onhuman health [MOD, MHLW]

3. medical triage related to the exposure to radiation [MOD MHLW]

*The underlined agency (e.g. MOD) is expected to play a leading role for each request item.

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Example Assessment of Radiological Release in Sea Water

In the March 22, 2001, 10 AM (EST) The Federation of Electric Power Companies of Japan(FEPC) Washington DC Office provide an update that include the following table:

Measurement at 2:30 PM UST) on March 21, 2011 From Sampling of Sea Water near SeaWater Discharge Point of Unit 1-4 (south side)

Radioactive Maximum PermissibleNuclides Concentration (Bq/cm 3) Water Concentration

(Bq/cm 3 )

Co-58 5.955 x 10-2 1 x 100

1-131 5.066 x 100 4 x 10-2

1-132 2.136 x 100 3 x 100

Cs-134 1.486 x 100 6 x 10-2

Cs-138 2.132 x 10-1 3 x 10-1

Cs-137 1.484 x 100 9 x 10-2

A plot of the 1-132/1-131 ratio from ORIGEN calculations as a function of decay time isshown in the figure below (obtained by plotting the data from Chuck Weber). The fact thatthere is 1-132 present indicates that the iodine is not from fuel in the spent fuel pools, whichhas all been cooled for more than 100 days. The ratio of 1-132/1-131 in the measured data is0.42, which corresponds to about 10 day decay time in the plot below. This roughlycorresponds to the elapsed time from the earth quake (March 11, 2:46 PM - March 21, 2:30

PM, JST) indicating that the iodine is from freshly irradiated fuel.

The Cs ratios are a little less clear. A separate ORIGEN calculation, indicates that the Cs-134/Cs-137 ratio at 10 days should be about 1.24, whereas the table above has a value of 1.Perhaps this is within the measurement uncertainty. The Cs-138 indicated above is likely attypo and should be Cs-136. This Cs-136/Cs-137 ratio is also shown on the chat below andseems to be in agreement that material is from recently irradiated fuel with roughly 10 daysof cooling time.

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Isotope Ratios For Irradiated BWR Fuel vs Decay Time

it

0

Reported MeasurementsFrom Sea Water - March 22, 2:30 PM AST

C -3,:c..137 L.

.:...I Q1

-- .L- J ,l - t.

1Q32 -13- D 2

... Q

Li

k: U2 tC S.1 TU 1:).,

DeCal Tine DAYS