Estimate of Emissions - Released Radionuclides - April 13th - Pages From Ml12068a155 - Foia...

8/2/2019 Estimate of Emissions - Released Radionuclides - April 13th - Pages From Ml12068a155 - Foia Pa-2011-0118, Foia

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From:Sent:To:Cc:

Subject:Attachments:Importance:

Cool, DonaldTuesday, April 12, 2011 12:53 PMHoc, PMT12; OST01 HOC; OST02 HO C,Piccone,Josephine; FOIA Responsehoc Resource; Brock, Kathryn; Jones, Cynthia;Schwartzman, Jennifer; Miller, Charles; Lewis, Robert; Moore, ScottFW: Message sent on behalf of the Japanese Delegation to the OECDEN20110412-4.pdf; NSC-PR1.pdf; NSC-PR2.pdfHigh

This information may have already been received by the Op Center, but I wanted to be sure that you had it.Donald A. CoolFrom: [email protected] [mailto:[email protected]] On Behalf Of [email protected]: Tuesday, April 12, 2011 10:48 AM

(b)(6)

Subject: Message sent on behalf of the Japanese Delegation to the OECDImportance: High

Tuesday, 12 April - 15:38 p.m. ~(\ 'A


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*Dear Colleagues,Th e attached files are the press release papers regarding the INES Level and the estimation of emission ofradioactive materials of Fukushima Dai-ichi Nuclear Power Station made by NISA (Nuclear and Industrial SafetyAgency) and NSC (Nuclear Safety Commission) in Japan on 12 April.As you could find on them, the events in Fukushima is assessed as Level 7 of INES and it is estimated that theamount of discharged radioactive materials to the environment in the current stage is approximately 10 percent ofthe Chernobyl accident.Best regards,Toshihiko KAMADAFirst Secretary (Science and Technology)Permanent Delegation of Japan to the OECDTel.: +33 (0)1 53 76 61 81Fax: +33 (0)1 45 63 05 44E-mail: toshihiko.kamada(~mofa~go.jp

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Trial estimation of accumulated amount into the atmosphere of 1.131 and Cs.137

101610 -.- 1-1310s-1 37,

S101,/. ;*E

10 4 1 .............. .... ..C/:3Eo101i5

1014-

-1

U I I . : I I I I : I I I . : I I . I .

3/13 3/14 3/15 3/16 3/17 3/18 3/19 3/20-3/21 3/22 3/23 3/24 3/25 3/26 3/27 3/28 3/29 3/30 3/31 4/1 4/2 4/3 4/4 4/5 4/6

Note) Emission amount into the atmosphere accumulated from the occurrence of the accidentto the specific day,Not the amount emitted within the day,


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News ReleaseApril 12, 2011

INES (the International Nuclear and Radiological Event Scale) Rating onthe Events in Fukushima Dai-ichi Nuclear Power Stationby the Tohoku District -off the Pacific Ocean Earthquake

Th e Rating of the International Nuclear' and Radiological Event Scale (INES)on the events in Fukushima Dai-ichi Nuclear Power Station (NPS), Tokyo ElectricPower Co. Inc. (TEPCO), caused by the Tohoku District - off the Pacific OceanEarthquake is temporarily assessed as Level 7, considering information obtainedafter March 18th.

However, the amount of discharged radioactive materials is approximately 10percent of the Chernobyl accident which was assessed on the same level.

1. INESINES is the rating, which International Atomic Energy Agency (IAEA)

and Nuclear Energy Agency, Organization for Economic Cooperation andDevelopment (OECD/NEA) established and proposed to the MemberStates in March 1992, in order to indicate the impact on safety by theindividual event in a nuclear facility and so on. Japan has also utilized itsince 1 August 1992.

2. Events in Fukushima Dai-ichi NPS, TEPCO, by the Tohoku District - offthe Pacific Ocean Earthquake

On 18 March, the ratings of the events in Fukushima Dai-ichi NPSby the Tohoku District - off the Pacific Ocean Earthquake were informedto be temporarily assessed as Level 5, considering information obtainedbefore March 18th. However, Nuclear and Industrial Safety Agency(NISA) estimated the total amount of discharged radioactive materialsfrom the reactors of Fukushima Dai-ichi NPS to the air, making a trial


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calculation using the result of analysis of the situation of the reactors andso on, which was carried out by Japan Nuclear Energy SafetyOrganization (JNES). This estimation resulted in the valuecorresponding to Level 7 of INES rating*, as listed in the following table..

* The value representing radiation impact, which is converted to theamount equivalent to 1311 (Iodine), exceeds several tens of thousandsof tera-becquerel (of the order of magnitude as ].016 Bq).

In addition, Nuclear Safety Commission of Japan (NSC) alsoestimated and announced the result of the trial calculation in the currentstage regarding the total amount of discharged radioactive materials tothe air, which had been being carried out in the Commission. This trialcalculation is counted backward from the results of monitoring data of 1311and ' 37Cs (Caesium) as the total amount of the discharge from theFukushima Dai-ichi NPS, This results in the value corresponding to Level7 of INES rating as well.

Assumed amount of the dischargefrom Fukushima Dai-ichi NPS

(Reference)Amount of the

discharge from theChernobylaccident

Estimated byNISA

Announced byNS C

131 (a) I 1.3x]0 17 Bq 1.5x1017 Bq 1.8x1018 Bq

137Cs 6.lxl0153Bq .1.2x1016 Bq 8.5x 106 Bq(Converted

value to 131I) 2.4x1017 Bq 4.8x1017 Bq 3.4x1018 Bq..(b)

(a) + (b) 3.7x1017 Bq 6.3x10 17 Bq 5.2x1018 Bq

(Notes) The conversion of the values to be equivalent to radiation impactof 1311 regarding the NISA's estimation and the NSC's


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announcement were carried out by NISA in accordance with theINES User's Manual.

Although Level 7 is the highest level of INES rating, it is estimatedthat the amount of discharged radioactive materials to the environment inthe current stage is approximately 10 percent of the Chernobyl accident,which was assessed on the same level in the past.

3. Procedures to be takenThis information is about the result of the total amount of the

discharge from Fukushima Dai-ichi NPS in the current stage. Asradioactive materials are being released to the environment, NISA willcontinuously gather and evaluate information.

In addition, the official level of INES will be determined, consideringthe technical evaluation from specialist view points made by INESEvaluation Subcommittee (Chairman: Dr. Naoto Sekimura, Professor ofUniversity of Tokyo, Nuclear Professional School Engineering,Department of Nuclear Engineering and Management), which set up inthe Nuclear and Industrial Safety Subcommittee of the AdvisoryCommittee for Natural Resources and Energy, after the recurrenceprevention measures are confirmed based on the concrete causes found.

(Contact Person)Mr. Toshihiro BannaiDirector, International Affairs Office,NISA/METIPhone: +81-(0)3-3501-1087


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Press Release(This is provisional translation. Please refer to the official version inJapanese)

Trial estimation of emission of radioactive materials (I-131, Cs-137) into theatmosphere from Fukushima Dai-ichi Nuclear Power Station

April 12, 2011Nuclear Safety Commission

1. Summary(1) It is still difficult at this stage to precisely estimate the total amount of

radioactive materials emitted into the environment from the FukushimaDai-ichi Nuclear Power Station after the accident.

(2) Under such a situation, Nuclear Safety Commission (NSC), incooperation with the Japan Atomic Energy Agency (JAEA), has been triedto estimate a total amount of specific radioactive materials emitted intothe atmosphere, from Fukushima Dai-ichi Nuclear Power Station to figureout the perspective of the accident. We hereby report the result obtainedat the present stage,

2. Trial estimation(1) We have been trying to estimate a total amount of specific radioactive

materials emitted from the station by comparing monitoring data withoutputs of atmospheric diffusion simulation.

(2) As a result, a total amount released into the atosphere from March 11 toApril 5 is as follows: 1.5x10 17Bq for 1-131 and 1.2x10 16 Bq for Cs-1 37.

3. Further actionsWe are trying to estimate and will report accordingly.

Note:The amount of emission of 1-131 and Cs-137 into the atmosphere is dominant to the doseinfluence assessment around the area of the station from the occurrence of the accidentthrough the end of the accident. Radioactive materials emitted into the environment due to thisaccident include, other than the above, noble gases emitted into the air, radioactive materialsinto the ocean and those deposited on the land surface and into the soil within the premises.


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From: Wittick, BrianSent: Tuesday, April 12, 2011 9:05 AMTo: ET02 Hoc; Liaison JapanCc: UA02 Hoc; LIA08 Hoc; OST01 HOC; Reyes, Debra; Turner, JosephSubject: Re: help with our Japan team computer network - As requested the folder has been

created.

Thanks

Sent from NRC BlackBerryBrian Wittick[(b)(6)

From: ET02 HocTo: Liaison JapanCc: LIA02 Hoc; LIA08 Hoc; OST01 HOC; Reyes, Debra; Turner, JosephSent: Tue Apr 12 09:03:29 2011Subject: FW: help with our Japan team computer network - As requested the folder has been created.Japan Team:Please read the information below provided by OIS (Debra Reyes) concerning access to a shared folder on the Citrixserver for your use. If you have any questions or need help, please contact the CSC at 301-415-1234. Thanks...KarenJackson

From: Reyes, DebraSent: Tuesday, April 12 , 2011 7:59 AMTo: ET02 HocCc: Reyes, DebraSubject: RE: help with our Japan team computer network - As requested the folder has been created.Good morning,The NOC has created a folder named 'Liaison Japan' and a control group 'G-OIS-Liaison Japan' on theexisting HQ S: drive. Added the users from the spreadsheet provided to G-OIS-Liaison Japan. Added G-OIS-LiaisonJapan to the folder Liaison Japan. Upon login the users in the group should receive a N: drivemapping to access the folder. The folder can also be accessed using the following link\\nrc.gov.nrc\hq\Shared\Liaison Japan_. This can be copied to the desktop for use.Please let me know if you need anything else.debbie

From: ET02 HocSent: Monday, April 11, 2011 7:13 AMTo: Turner, Joseph; Reyes, DebraSubject: FW : help with our Japan team computer networkFyi...karen

I


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From: Bernhard, RudolphSent: Monday, April 11, 2011 6:27 AMTo: LIA08 Hoc; Rich, Thomas; Paradiso, KarenCc: ET02 HocSubject: RE : help with our Japan team computer networkJeff, thanks for kicking off the request. I had no clue who to ask.A subdirectory that all in country Japan team members could be mapped to would be great. Since we are allfrom different offices, we have no common. network drive that we share. We do not want to use Sharepoint,but want a subdirectory that we can map to a drive that all can reach when using Citrix. IT would have to beprovided with names of those shipped over in the future, so they could be added to the access for the drive orsubdirectory.ThanksRudyFrom: LIA08 HocSent: Monday, April 11 , 2011 6:15 AMTo : Rich, Thomas; Paradiso, KarenCc: ET02 Hoc; Bernhard, RudolphSubject: help with our Japan team computer networkGood morningOur Japan site team called us this morning and asked if a separate network could be created for them to use to storedocuments created by and used by the NR C site team in Japan, similar I hink to the way we use the M drive in the NR COps Center to capture event info at our end.Please let us know if this is possible and what the procedure is for this to occur.Thanks for any help you can provideJeff TempleNRC Operations CenterLiaison Team Coordinator301-816-5185.

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From: HO O HocSent: Wednesday, April 13, 2011 10:00 AMTo: LIA07 Hoc; LIA08 Hoc; OST01 HOCSubject: FW : Latest report summarizing radionuclide detection at TakasakiAttachments: 110413Takasaki-reportApr9.pdf; image001.jpg

Headquarters Operations OfficerU.S. Nuclear Regulatory CommissionPhone: 301-816-5100Fax: 301-816-5151email: [email protected] e-mail: [email protected]: Jih, Rongsong [mailto:JihRS@stategov]Sent; Wednesday, April 13, 2011 9:52 AMTn , p6-nmi \AI ,M r ir(b)(6)

Subject: Latest report summarizing radionuclide detection at TakasakiAttached is the latest report on the radionuclide detection at the CTBT IMS station Takasaki(JPP38/JPX38), just released (dated April 13 JP time) by CPDNP, Japan's CTBTimplementation body overseeing J-NDC-1 and J-NDC-2, based on data collected throughApril 9.The tables near the end should be identical to those posted by MEXT which is JAEA's (=J-NDC-2) mother agency.V/R,Rongsong

This email is UNCLASSIFIED.I


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