ML20049H693

LER 82-003/03L-0:on 820127,leak of Over 1% Detected Through Charcoal Filters in B Standby Gas Treatment Sys.Caused by Improper Packing of Charcoal Canisters.Charcoal Beds Replaced

ML20049H693
Person / Time
Site:	Dresden
Issue date:	02/23/1982
From:	Anandappa A COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20049H688	List: ML20049H687 ML20049H693
References
LER-82-003-03L-04, LER-82-3-3L-4, NUDOCS 8203030455
Download: ML20049H693 (2)

Text

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LICENSEE EVENT REPORT

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,o m l During normal operations while performing DTS 7500-7, freon test, on the "B" SBGTS, a l g leak of over 1 percent through the charcoal filters was detected. The "B" SBGTS was j

, , declared inoperable (T.S.3.7.B.2). There was no effect on public health or safety. [

This event is of minimal safety significance since the redundant "A" SBGTS was operable.g Past occurrence reported by R.O. 75-21 on Docket 50-237.

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,, ,o,l The event was caused by a leak in the charcoal beds due to improper packing of the i

,, , , , , charcoal canisters. The charcoal beds were replaced and retested satisfactorily. The i "B" SBGTS was then put back into service. Routine testing of the system will continue l

per the Tech. Spec. requirements.

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DEVIATION REPORT

@ Commonwealth E_, ova NO.

STA 12 - 2/3 UNIT son 4 YEAR NO.

. TITLE OF OEVIATION PART il Freon Test Failure of Standby OCCURRED Gas Treatment System "B" Train 1-27-82 1225 cur yw 5Y S T EM AFFECTLD 7500 PLANT STATUS AT TIME OF EVENT TESTING SBGTS yoeg Run , P*RtMaT) 1578 , go,ggy g3 460 C YES Nn DESCRIPTION OF EVENT While erforming DTS 7500-7 (Freon Test) to measure the leakage of the "B" SBGTS, the measured leakage was 1.7% which exceeded Tech. Spec. 3.7.B. limit of less than 1%.

I 10 CFR50. 72 NRC RED PHONE G NOTIFICATION MADE YES NO EQUIPMENT FAILURE D18371 YES NO ACRK REQUES T NO. RESPONSIPLE SUPERVISOR A. Anandappa e,rg 1-&M PART 2 l 0PERATING ENGINEER'S C044ENTS The charcoal absorbers for 2/3 "B" SBGTS Train will be replaced and retested prior to declaring the train operable. The 2/3 "A" Train was successfully tested prior to the failure of the 2/3 "B" Train.

O EVENT Or PueLiC INTEREST O 24-H0uR NRC Noti r i CATI ON REO D TtCH. SPEC. VIOLATION TELEPH Ilike Jordan (Courtesy) 1-27-82 1530 REGION lil DATE TIME NON REPORTABLE OCCURRENCE TELECM/TELECOPY 14 DAY RE PO R T A BL E / T. S . REGION lli DATE TIME h 3D DAY REPOR TABLE / T.S. b a b

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] ANNUAL /SPECL REPORT REQ'O lF ABOVE NOTIFICATION 15 PER 10CFR21 A.I.R. e 5-CAY ARITTEN REPORT REQ'D PER 10CFR21 L.E.R.

• 7tu, F. A. Palmer 1-28-82 0946 CECO CORPORATE OFFICER DATE TIME l

PRELIMINARY REPORT Michael Wright 1-28-82 C LM PL E TE D AND REVIE*EO getRAtiNG ENGINEEg DATE INVESTIGATED RE3 ORT S RESOLUTION g ACCEPTED BY STATICN REVIEW pg /\Amid r' a m U

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RE SOLUT t CN APPRO%ED AND yJ7 AUTHCRIZED FOR DISTRI BUTION iL 64 5f76 'F:#v '5 12.ti 10 01 STAT 'N' TINTEN0ENT / CAT'E/

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