ML20125B118

Responds to 790523 Ltr Re Discovery of Radioactively Contaminated Clothing in Unauthorized Area.Util Has Instituted Addl Precautions.Continuous Releases of Radioactivity from Plant Below Established Limits

ML20125B118
Person / Time
Site:	Three Mile Island
Issue date:	09/19/1979
From:	Gossick L NRC OFFICE OF THE EXECUTIVE DIRECTOR FOR OPERATIONS (EDO)
To:	Walker R HOUSE OF REP.
Shared Package
ML20125B121	List: ML20125B118 ML20125B123
References
NUDOCS 7910240116
Download: ML20125B118 (2)

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(~ Q' United The HonorablekJ R'obert; S./Walkerg Whg'ghyb.g]h%p e g,g ,q

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Dear- Congressman ~ Walker:

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. Thank you for your letter to Mr. C. Kamerer of our-Of fice of' CongressionalM.N P 1 i i Affairs, ' dated May 23, 1979., lihopef the' following 1.nformatifon . willi bei, ' I helpful to you in responding to the specific concerns of your" constituent.% ~ . ld "gy ,

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Following the. discovery that radioactively ~ contaminated clothing hac been . w. . ..fh.f kl

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' t misplaced in an unauthorized-portion 'of the Three Mile Island.Nuclea'rj C 46hW

' < Statio' n , Metropolitan EdisoFCompany instituted additional.icministrative f$/ db . !

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I proceoures' designed to preclude a recurrence of this error. Speci fically , 'i' l

! these procedures include the following precautions: (1) prior to any trash j removal from the protected (innermo^st fence) area, Health Physics. personnel

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i are to De notified in order that a radiation ' urvey can be perf ormed to" , ,l ].91 - j s .

! ensure no racioactive material is present; and (2) contents of all truckF NMM J f will besimilar surveyed priortaken to place.

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being released from s

the protect y

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date, no incidents have L c

Regarding continuing releases of radioactive liquid effluents, except for '

oischarge of waste water cecontaminated by the existing EPICOR-I cecontam-ination 7 system and cischarge of slightly contaminatea (approximately 10 -microcuries per cubic centimeter (uCi/cc)) waste water from Unit 2 tstent witn the f acility operating license, oischarge of waste water to the Susquehanna is currently prohibited by tne Commission (Ref. Comission i statement of 5/25/79, a copy of which is enclosec). Controlled releases of small amounts of radioactive liquids ana gases are ueing made from tne TMI .

Nuclear Station, however, all racioactive releases, to Doth the Susquehanna '

River and to the atmosphere, are being continuously monitored. The cumulative j total of all radioactivity released to the Susquehanna River from the cay of y ,

, the accident (March 26,1979) to May 31,1979 (latest available total), is- A j 0.32 curie (Ci), excluaing 15.37 Ci of tritium. This compares to a release. 4 l

limit of 10 Ci (excluding tritium) in any calencar quarter of a year, as speci--

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?q< <w l Currently, Iodine-13L rele'a'se rates" to thecatmosphere are- approximat;ely# 1 '.0[uC.$ i #

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..rel' ease rate. is:'approximatelyu600-times W'Q l f ic'atron]limitCf'odlodine21R re1[ede{ 7.do'ble gas. releases from TMi below'~t'h 3 hithf y $ h k l

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< .5 Thet estimated Lmaximum.0,-mil,.e 'ra.di us '.of< ther plan't',to ~ be 3300. .per. s.on.,r

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dose.ethati ano i n.-dividualilocated .o ff site in/aepopuQ + @m/.

d~~.p\1 atedia real mi ght. haiei rece.1 vea i s ?Tesi than; 100 n mi l li rems .1 ,U j

'Thi s" estimates %WWh was based. on ' a dosimete'r reading"of 83 millirems'O.5 miles east-northeast >,' O Y. L {

.of the. site. ' These estimates' would. not change significantly ,1f updated. tom /

' include occurred Defore: Ap'ri:1 releases since.' April 7y1979Rsince more. than 80% of ~ alf $$; T 7', ' 1979." ' AsJa ; reference, ' natural background.. doses? inMc WM' s the United.n States., w eaverage"100?a millirems.pbr. year uM.Jh6%iMb W t #x W~. m'.:

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Enclosure:

Commission Statement of 5/25/79 I

Di stri bution

Docket 289/320 CNelson NRC POR NRR r/f RReid i Local PDR S&P TMI' r/f PKreutzer '

) KCornell TMI Site'r/f SMiner 7

! RDavis TMI/PSS r/f Jeanne Cook m,. <

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NOTE:

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' these procedures incllude the 'foll,owins preca'utionsp.

removal f rom the protectea. .(i.nnermost fen.ce)~' area,"Healtnj Physics. pe. rso.nne.lh4T~. .

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areJtol be[ notified in order"that_ a: radiatfon ^ survey"can' be? perf.~ormed;to> pb gA e t57 % -

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fcatE,i;noxsimiIdr;incidentShsveltikenl phr.gggwgggppgpWc pagg plddeMdWpfNWG$p$g@ EW$@Q Regaroing continui'ng releases of radioactive liquM effluents, except f'or'

' q; *p

% cischarge 'n ssystemof waste andwater discharge cecontaminated of sligntly contaminated by the existing EPICOR-I decontam-(approximately f h o~ati

7 uC1/cc)] waste water from Unit 2 consistent with the facility operating Q j licenses, discharge of waste water to the Susquehanna is rently pronioited a copy o w'icn is N

{'k,, 1h by enclosea)]. the Comission Controlled releases (Ref.of Comission small amounts ofstatement fracioactive ateri of[o/25/7' aisgre ' '< b.

Ntp . Deing mace from tne TMI Nuclear Station. Al))racioactive releases, to corn Wh .

the Susquehanna River and to the atmospnere, are .Deing. continuously monitored. /Qg The cumulative total of all radioactivity releasec to the Susquehanne River ,T j accicent (March 26,l1979) to May 31, ISV 7testf availaulf ' -

f rom. the day of A(excludingS15.37 Ci of tritium).~1 This/M,1isi i~a(rel5

' wit 'in of 10u.qC[i Ci, Ce cluding. tritium) in any calendar quarter of a4 year, ras specis.

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L fied in the technical specifications- s 1, , ~', ~4 ,

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4 Dccket 289/320 NRC PDR Attorney / ELD Local PDR OCA (3)

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KCornell GErtter (E0046510)

RDavis MGroff.

Jeanne Cook JMullin #

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N .

Controlled releases of smal amounts of racioactive materials are being made from the THI Huclear/ Station. All ranoactive releases, to both tne Susquehanna River and t Currently, Iodine-131jr,s elease therates atsnosphere, to the atmos,pnere are kingare continuously approximately w,onitored.

l.0 uC1 (0.000001 curies) per cay which equates to 1.2 x 10-5 uCi part second. This releN(se rate is approximately 600 ttnges below the current .

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from THI which (verage less than U.0002' Ci/sec are mo're than ten times t .

below the kR established limits'.3 ' The cumulative ~ total %f all radioac ' lrl' I tivity! released to the Susquehanna River from the day of he accicent .,

s(March 2.8 1979) to;Mayt 3.l',b.19794 (la,testiavail'able total) .. 'ts 0.32. Ci/C , ) c R q s (excis41 gils.3MC.1: ofitr;f ttum)RThinconiares; to' a release %imitihfMl# < O J r jlDiCi

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Jq J STATEMENT os #

fg The staff is directed to prepare an Environmental Assessment regarding proposals to decontaminate and dispose of radioactively contaminated waste water ~from the Three Mile Island facility. The Assessment will be divided into several portions. The first portion of the Assessment will ' deal with the proposed decontamination of intermediate-level waste water using the EPICOR-II system at TMI. The Assessment should include discussion of potential risks to the public health and safety, including occupational exposures and the risk of accidental releases, and a discussion of liternatives to the EPICOR-II system.

Pending completion of this portion of the Assessment and opportunity for '

public comment, the staff should direct the licensee not to operate the EPICOR-II system. Testing of the EPICOR-II system without using contaminated waste may proceed. txcept for discharge of waste water decontaminated by the existing EPICOR-I decontamination systemN and discharge of industrial waste waterN as consistent with the facility operating licenses, no discharge of waste water shall be permitted until completion of a second portion of the Assessment dealing with any such prc : sed discharges. This portion shall in-clude a discussion of alternative: t r aischarge into the Susquehanna River.

The decontamination and disposal of -3h-level waste water will be the subject  ;

of a subsecuent Assessment. Howest  ;",e Director of the Office of Nuclear Reactor Regulation may authorize m:. es deemed necessary to cope with an N Primarily pre-accident waste mter from Unit 1 which has been partially contaminated by water from Unit 1, with an activity Tevel of less than 1 microcurie per cc. prior to treatment and with an activity level approxi-mately 10-7 microcuries per cc. in the discharge canal after treatment.

U Waste water slightly contaminated (approximately 10-7 microcuries per cc.)

~ due to leakage from secondary plant service support systems. The di.scharge of this industrial waste water is necessary to maintain TMI Unit 2 in a safe condition.

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FIN A L R EPLY /*'/ , .,/ /I d - O CHAIRMAN '

b Ftf FILE LOCATION / O EXECUTIVE OtRECTOH MmA %/. p OTHER: N DESCRIPTION O LETTER CMEMO O R E.PO R T C OTHEH SPECI AL INSTRUCTIONS OR REMARKS , ,s D' /(,Q l-Req. infor1netion for Jack Leonent re jg' , , , . p' ' ' '

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NuvntuorpacEs C L AL5lFIC A TION l j cATEcony w,T At ni cisT n v No.

ASSIGNED TO' OATE o Ns. O no M[SECY 79-1579 l

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i JCAE NOTIFICA' TION FiECOMMENDED. O YES O No NRC FORM 237 e

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