ML20041A096
| ML20041A096 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 07/30/1981 |
| From: | Barley W, Barrett L, Ronald Bellamy, Fasano A, Joel Wiebe NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I), Office of Nuclear Reactor Regulation |
| To: | |
| References | |
| PNO-TMI-81-016, PNO-TMI-81-16, NUDOCS 8202190088 | |
| Download: ML20041A096 (2) | |
Text
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PRELIMINARY NOTIFTCATION 50320-810729 July 30, 1981 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-TMI-81-16 This preliminary notification constitutues EARLY notice of events of POSSIBLE safety or public interest significance.
The information presented is as initially received without verification or evaluation and is basically all that is knowft-by.NRC staff on this date.
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- k y9-l Facility: Metropolitan Edison Company Three Mile Island, Unit 2 y
Q,fw j7 Middletown, Pennsylvania
'eg M] 7 %:ggr,g/g Docket Number 50-320 y
Subject:
LEAKAGE FROM PROCESSED WATER STORAGE TANK Q
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s p pyr(t While performing a routine check of radiation levels around the oe storage tanks, at about 8:00 p.m. on July 29, 1981 radiological co onnel discovered leakage around the manway of the "B" tank.
Initial indications were a leakage rate of about 15 drops per minute and localized ground contamination under the manway of 280 mrad / hour beta and 6-7 mR/ hour gamma. The onsite NRC staff was notified of the leakage prior to 9:00 p.~m. and a NRC representative reported to the site to monitor the licensee's response and corrective actions.
The tank had been filled to just above the manway (about 40,000 gallons) at about 3:00 p.m. on the same day.
Contamination levels of-the processed water in the tank
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were about 2 E-3 uCi/ml for Cs-137 and 2 E-3 uCi/ml for Sr-90.
An attempt was made to stop the leakage by tightening the bolts of the manway. When this attempt failed, the licensee instituted a contingency procedure and around midnight on July 29, 1981 began transferring the water to another tank associated with the EPICOR-II system. The level in the tank was lowered to below the manway by about 4:00 a.m. and the estimate of total leakage is less than one gallon.
The leak did not affect the submerged demineralizer system, but processing of water was temporarily stopped in order to assess the impact of the leakage.
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As of 8:00 a.m., on July 30, 1981, soil contamination nas been controlled.
Pumping from the tank is continuing in order to open and repair the manuay.
Media interest has been expected because of public sensitivity to TMI related events and the licensee plans to issue a press release.
The NRC does not plan to issue a press release.
The Commonwealth of Pennsylvania has been informed.
This preliminary notification is issued for information only and no further action by ta fkj
Contact:
JJ. Wiebe 590-1134 W. Barley //590-1141 L/e u
4.,f,590-1123 e.e. % lamy L[ N ar % %' 5 A. Fasano R. Bel 59 138 rett L
8202190088 810730 4
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PND-TMI-81-016 PDR g/
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9 PH0-TMI-81-16 (continued) July 30, 1981 DISTRIBUTION:-
(Facsimile Transmission Times Noted)
IE:TAS /,$d/p MARYLAND NATIONAL Region I
// 'AM (E/W TOWERS)
BANK BLDG
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Region II
/d Wd W. J. Dircks, EDO Region III 24:3r
.H_ST BLDG
/ot:#d C. Michelson, AED0 Region IV ___,d Mo
. Chairman Palladino J. J. Fouchard, PA Region V t.;.<,:7d Commissioner'Gilinsky N. M. Haller, MPA Commissioner Bradford H. K. Shapar, ELD NSAC
/f!V.S Coninissioner Ahearne INP0
/p; fd ACRS AIR RIGHTS BLDG /j:,1b S. J. Chilk, SECY G. W. Kerr, SP (MAIL)
C. C. Kammerer, CA B. J. Snyder, NRR IE:TAS Document Mgt. Br.
PHILLIPSBLDG/M'd WILLSTE BLDG /42.73 S. Ebbin, NSOC H. R. Denton, NRR J. G. Davis, NMSS J. Tourtellotte R. H. Vollmer, NRR R. B. Minogue, RES Asst. Chief Hearing T. E. Murley, NRR Counsel, OELD D. Eisenhut, NRR LANDOW BLDG (Fax by HQ)
DOT (Transportation S. H. Hanauer, NRR (6 MIN /PAGE) only)
R. J. Mattson, NRR J. J. Cummings, 0IA PRELIMINARY NOTIFICATION