05000296/LER-1980-016-03, /03L-0:on 800513,following Completion of Flow Test on Diesel Generator Heat Exchanger 3D,cooling Water Found Inadequate Per Tech Spec 3.5.B.2.Apparently Caused by Restriction in Cooling Water Piping.Water Lines Flushed

/03L-0:on 800513,following Completion of Flow Test on Diesel Generator Heat Exchanger 3D,cooling Water Found Inadequate Per Tech Spec 3.5.B.2.Apparently Caused by Restriction in Cooling Water Piping.Water Lines Flushed

ML18025A923
Person / Time
Site:	Browns Ferry
Issue date:	06/11/1980
From:	TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18025A922	List: 05000296/LER-1980-016, Forwards LER 80-016/03L-0 05000296/LER-1980-016-03, /03L-0:on 800513,following Completion of Flow Test on Diesel Generator Heat Exchanger 3D,cooling Water Found Inadequate Per Tech Spec 3.5.B.2.Apparently Caused by Restriction in Cooling Water Piping.Water Lines Flushed
References
LER-80-016-03L-02, LER-80-16-3L-2, NUDOCS 8006170614
Download: ML18025A923 (4)

LER-1980-016, /03L-0:on 800513,following Completion of Flow Test on Diesel Generator Heat Exchanger 3D,cooling Water Found Inadequate Per Tech Spec 3.5.B.2.Apparently Caused by Restriction in Cooling Water Piping.Water Lines Flushed

Event date:
Report date:
2961980016R03 - NRC Website

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8 60 61 DOCKET NUMBER 68 69 EVENT DATE EVENT DFSCRIPTION AND PROBABLE CONSEQUENCES QIO Upon completion of the flow test on 3D diesel

~O3 determined that the cooling water flow was inadequate per T.S. 3.5.B.2.

Redundant systems 3A, 3B, and 3C diesel generators were operable.

There was no danger to the health oi'afety of the public, no resulting significant chain of events.

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CDMPONEN1 TAKEN ACTION ON PLANI h1ETHOD HOURS Q22 SVBh}ITTED FOMAUI}. SUPPLIER MANVCACTVAE}s ~xGff ~OIQ ~ZO2Q ~O 0 0 0 0 ~v 0 ~vQ4 ~LO26 z 9 9 9 lf 33 34 35 36 37 40 41 43 44 4> CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Q27 Apparent restriction in the cooling water piping upstream and/or downstream from the heat exchanger. The heat exchanger was removed, the cooling water lines flushed, and unit performed normally. A system flushing evaluation is being performed. hlf. THQD QF DISCOVEIIY DISCOVEflY DESCRIPTION 32 LCJQ>< MIZ ZOZ rase 45 46 LOCATIONOF RELEASE Q6 NA'A NRC USE OWLY NAFZF OF PITFI>A<RFII 8006~10 g ( CQ Q ~Q ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITY 6 Z Q3 Z Q34 NA 7 8 9 10 11 44 PERSONNEL FXPOSUBES NUMBfH TYPE DF SCRIPTION Q39 0 ~oo oJQ>>~zQ>> NA 7 8 9 11 12. 13 PEA 5 ONNE L INJURIES NUMBER

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.... 'tennessee Va)ley Authorit <4 ~ 0) Browns Ferry Nuclear Plan Pot'm BF 17 BF 15. 2 1/10/V9 LER SUPPLEMENTAL INFORNIATION 'FRO 296 /8016 Technical Specification Involved Reported Under Technical Specification 6 7 2 b (2) Date of Occurrence >/I3/ac Tune of Occurrence II Unit Identification and D~escri tion'of Occurrence: Upon completion of the flow test on the unit 3 diesel generator heat exchanger, it was determined that the cooling water flow was inadequate. Conditions Prior to Occurrence: Unit 1 97% steady state operation Unit 2 100% steady state operation Unit 3 100% steady state operation Action specified in the Technical Specification Surveillance Requirements met d~~dl 3A, 38, and 3C diesel generators proved operable. Apparent Cause of Occurrence: Restriction in the cooling water. piping upstream and/or downstream from the-heat exchanger. ~Anal sis of Occurrence; No danger to the health or safety of the public,. no resulting significant chain of

events, no release of activity, and no damage to plant or equipment.

Corrective Action

Heat exchanger was removed, cooling water lines flushed, and the unit performed normally. A system, flushing evaluation is being performed. Failure Data: N/A

~Retention:

• Revision:

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