ML20125B118
| ML20125B118 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| 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: |
| References | |
| NUDOCS 7910240116 | |
| Download: ML20125B118 (2) | |
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m ;#g y Honorable R'obert; S./Walkerg Whg'ghyb.g]h%p.
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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 helpful to you in responding to the specific concerns of your" constituent.%
Affairs, ' dated May 23, 1979., lihopef the' following 1.nformatifon. willi bei, '
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..,Following the. discovery that radioactively ~ contaminated clothing hac been
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' < Statio', Metropolitan EdisoFCompany instituted additional.icministrative f$/ db. !
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I proceoures' designed to preclude a recurrence of this error. Speci fically,
'i' these procedures include the following precautions:
(1) prior to any trash
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are to De notified in order that a radiation ' urvey can be perf ormed to",,l ].91 - j s
ensure no racioactive material is present; and (2) contents of all truckF NMM J f
will be surveyed prior to being released from the protect
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Regarding continuing releases of radioactive liquid effluents, except for oischarge of waste water cecontaminated by the existing EPICOR-I cecontam-ination system and cischarge of slightly contaminatea (approximately 7
10
-microcuries per cubic centimeter (uCi/cc)) waste water from Unit 2 tstent witn the f acility operating license, oischarge of waste water to the Susquehanna is currently prohibited by tne Commission (Ref. Comission i
statement of 5/25/79, a copy of which is enclosec). Controlled releases of small amounts of radioactive liquids ana gases are ueing made from tne TMI.
Nuclear Station, however, all racioactive releases, to Doth the Susquehanna '
River and to the atmosphere, are being continuously monitored. The cumulative j
total of all radioactivity released to the Susquehanna River from the cay of y the accident (March 26,1979) to May 31,1979 (latest available total), is-A j
0.32 curie (Ci), excluaing 15.37 Ci of tritium. This compares to a release.
4 limit of 10 Ci (excluding tritium) in any calencar quarter of a year, as speci--
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Currently, Iodine-13L rele'a'se rates" to thecatmosphere are-approximat;ely# '.0[uC.$ i #
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..rel' ease rate. is:'approximatelyu600-times below'~t'h n
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ic'atron]limitCf'odlodine21R re1[ede{ 7.do'ble gas. releases from TMi 3 hithf y $ h k l
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".R estimated Lmaximum.0,-mil,.e 'ra.di us '.of< ther plan't',to ~ be 3300..per. s.on.,
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'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 releases since.' April 7y1979Rsince more. than 80% of ~ alf T occurred Defore: Ap'ri:1 7', ' 1979." ' AsJa ; reference, ' natural background.. doses? inMc WM' the United States. average"100? millirems.pbr. year uM.Jh6%iMb 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
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NOTE:
PREVIOUS CONCURRENCES
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be[ notified in order"that_ a: radiatfon ^ survey"can' be? perf.~ormed;to> pb gA e t57 %
areJtol w illi,rer no..rac.i,.c.acti..ve,. mate,ii,all.i s.,s pre.,se.be+t surveyed. pri or a
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j licenses, discharge of waste water to the Susquehanna is rently pronioited
{'k,, by the Comission (Ref. Comission statement of[o/25/7' a copy o w'icn is N
1h enclosea)]. Controlled releases of small amounts of fracioactive ateri aisgre ' '< b.
N. Deing mace from tne TMI Nuclear Station. Al))racioactive releases, to corn Wh tp 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
f rom. the day of A(excludingS15.37 Ci of tritium).~1 This/M,1isi i~a(rel5 accicent (March 26,l1979) to May 31, ISV 7testf availaulf w 'in u.qC[i t
it of 10 Ci, Ce cluding. tritium) in any calendar quarter of a4 year, ras specis.
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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 the atsnosphere, are king continuously w,onitored.
elease rates to the atmos,pnere are approximately l.0 uC1 (0.000001 curies) per cay which equates to 1.2 x 10-5 uCi part This releN(se rate is approximately 600 ttnges below the current.
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STATEMENT fg The staff is directed to prepare an Environmental Assessment regarding os 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
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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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