05000311/LER-1982-049

LER 82-049/03L-0:on 820617,containment Fan Coil Units 21 & 25 Failed to Meet Svc Water Flow Requirements.Caused by Valve 21SW57 Tube Bundle Plugged W/American Oysters in Unit 21.Unit 25 Failed Due to Cracked Solder Joint

ML20055A955
Person / Time
Site:	Salem
Issue date:	06/30/1982
From:	Frahm R Public Service Enterprise Group
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20055A949	List: 05000311/LER-1982-049, Forwards LER 82-049/03L-0.Detailed Event Analysis Encl
References
LER-82-049-03L, LER-82-49-3L, NUDOCS 8207200171
Download: ML20055A955 (1)

LER-2082-049,

Event date:
Report date:
3112082049R00 - NRC Website

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LICENSEE EVENT REPORT (PLEASE PRINT C3 TYPE ALL REtUlRED INFCT.MATl!N)

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EVENT DESCRIPTION AND PROBABLE CONSEQUENCES r o l3l l On June 17, 1982, during routine surveillance, it was observed that the service water g O 3 lfl w to No. 21 Conta'inment Fan Coil Unit (CFCU)waslessthanrequiredbytheTechnica}

gSpecifications,'and Action Statement 3.6.2.3.a was entered. Later that day, No. 25 g g ,

CFCU also failed to meet the service water flow requirements, and Action Statement gg y 0 6 l 3.6.2.3.b was entered. These occurrences constituted operation in a degraded mode in g gag,y gaccordance with Technical Specification 6.9.1.9.b. g

, o ;g ; g (82-046,82-041, 82-040,82-039, 82-038) g 7 s9 so SYSTEM CAUSE CAUSE COMP. VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SU8 CODE Q

7 s lSlBlh d h e io is 12 h l Hl Tl El Xl Cl Hlh yh y h is is is 20 SE QUENTI AL OCCURRENCE REPORT REVISION EVENT YEAR REPORT NO. CODE TYPE NO.

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] g 43 lWl1l2l0 g 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h

[T]T] l The low flow to No. 21 CFCU was due to Valve 21SW57 tube bundle being plugged with l lTJT'] l American oysters. The valve was cycled to eliminate the oysters by erosion. No. 25 l 3 7 lCFCU failed due to a cracked solder joint in the back pressure square root extractor. l g l Joints subject to failure were resoldered. In both cases, the CFCU.was satisfactorilyg gtested, and the respective action statement terminated. g 7 s 9 S3 SA $  % POWER OTHER STATUS Di$ 0 RY DISCOVERY DESCRIPTION l1l55 b h l1l0l0l@l NA l d @l Surveillance Testing l ACTIVITY CO$ TENT f ELE ASED OF RELE ASE AMOUNT OF ACTIVITY LOCATION OF RELE ASE 7

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[h dgl io si NA 44 l l 45 NA _l 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION I

EIB I Ol 01 Ol@l zl@l Na PE RSONNE L INJU ^ IES NUVBER OESCRIPTION I

7 i a se I d 0l 0l@l si ir NA so LOSS OF OR DAMAGE TO FACILITY TYPE DESCRIPTION b Wh!

7 8 9 to NA so PusticiTv 8207200171 820630 NRC USE ONLY iS DESCRIPTION PDR ADOCK 05000311 3 [SUEDy_jhl NA S PDR l l 1 l l l l l l l l l l l 7.3 7 s e io .

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• NAME OF PREPARER R._Frahm .

PHONE: (609) 541-5000 PO 4