ML20198Q671

PNO-TMI-82-006:on 820322,attempted Removal of Seal Injection Filter (MU-F-4A) One of Sys Filters,Resulted in Leak of Approx 150 Gallons of Contaminated Water

ML20198Q671
Person / Time
Site:	Three Mile Island
Issue date:	03/26/1982
From:	Fasano A, Oneill B, Shanbaky M Office of Nuclear Reactor Regulation
To:
References
PNO-TMI-82-006, PNO-TMI-82-6, NUDOCS 9711130003
Download: ML20198Q671 (2)

Text

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Ouscx-osuOLL March 26,1362

{l. .hdAOr4 bgpq l, PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-TMI.82-06 This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or pubi te interest significance. The information is as initially received without verifi-cation or evaluation and is basically all that is known by NRC staff on this date.

-. Mcility: GPU Nuclear Corporation Licensee Emergency Classification:

. C/ Three Mile Island Unit 2 ,_X_ , Not Appl ica bl e

- Docket No.50-32d j

Subject:

UNIT 2 MAKE-UP AND PURIFICATION SYSTEM FILTER REMOVAL (AUXILIARY BUILDING)

A team of eight technicians successfully completed the removal uf four highly contaminated filters from the Unit 2 Make-up and Purification System (MU), today.

(Filters which had been in place since the March 1979 accident.)

Un Monoay, March 22, 1982, the attempted removal of the Seal Injection Filter (MU-F-4A), one of the system filters, resulted in a leak of approximately 150 gallons of contaminated water. The team reacted according to contingency procedures and the cater was immediately vacuumed into drums using special'.. . signed equipment. No leakage outside the confines of the MU cubicle occurred. After full assessment of the filter housing leakage, the cause of the leakage was identified by the licensee and corrected.

Rigorous training and rehersals were completed by the team members prior to commencement of filter removal operations.

On Tuesday, March 23, 1982, the two seal injection filtors (MU-F-4A and MU-F-4B) were successfully removed.

24, 1982, the team successfully removed the two remaining filters G(!nWednesday,MU-F-2A and MU-F-58)March in the Make-up System.

On Thursday, March 25,1982, the team completed their assigned task when they cleaned and rinsed the fil;er housings of residual radioactive debris, the removed filters were placed in shielded drums in preparation for shipment to EG&G, Idaho. Plans are to ship the shielded drums containing the filters during the second week in April 1982.

The total man-rem for this week's evolautions was icss than 1 man-rem. ,

$ The make-up filters renoval operation was conhnuously monitored by the onsite NRC n Radiation Specialists. )

@ $ Neither the NRC nor the licensee plan to issue a press release at this timc. The \

4 Commonwealth of Pennsylvania was informed. h tn

$' This preliminary notification is issued for information only and,no further action '

y other than yputine', 110wup bym?the5NRC is anticipated. [h'lj?r.&.1

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Contact:

B. O'rieil /590-1145 M. Shanbaky/590-1140 A. l anno /590-1173 L. Barrett/590-112 M D- .

&lstributi n:

H. St. .3/ MNBB f _h Phillips [, Sk E/W~~ Willste Air Rights ~'

Chairtreif Palladino EDO NRR IE NMSS " ST Conn. Gilinsky PA DIA RES NRR

. Ahearne an. Roberts MPA ELD lll[ll l[llllj

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R:V J. TourtelIotte