05000296/LER-1981-032-03, /03L-0:on 810701,leak Discovered at Vent Nipple of RHR Pump Room Cooler 3A.Cause Unknown.Crack Was Silver Soldered

/03L-0:on 810701,leak Discovered at Vent Nipple of RHR Pump Room Cooler 3A.Cause Unknown.Crack Was Silver Soldered

ML20009F604
Person / Time
Site:	Browns Ferry
Issue date:	07/22/1981
From:	Holder G TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20009F601	List: 05000296/LER-1981-032, Forwards LER 81-032/03L-0 05000296/LER-1981-032-03, /03L-0:on 810701,leak Discovered at Vent Nipple of RHR Pump Room Cooler 3A.Cause Unknown.Crack Was Silver Soldered
References
LER-81-032-03L, LER-81-32-3L, NUDOCS 8107310347
Download: ML20009F604 (2)

LER-1981-032, /03L-0:on 810701,leak Discovered at Vent Nipple of RHR Pump Room Cooler 3A.Cause Unknown.Crack Was Silver Soldered

Event date:
Report date:
2961981032R03 - NRC Website

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!ol2l l During normal operation, while performing instrument checks and observations tests Ioiai I (SI 2) and the routine shift inspection, a leak was discovered at the vent nipple 1

5 1.ill of the 3A RHR pump room cooler. The cooler was removed from service to reoair the I

l o ! s i l leak.

See T.S. 3.5.D.2, 3.5.B.3, and 3.5.B.5.

There was no danger to the health or I lo is l l safety of the public. Redundant systems were available and ooerable. There were I

l o i 7 l [ no previous similar events.

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36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS li10llCause unknown - there was a crack at the vent nicole on the cooler coil. The crack l

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Tennessee Valley Authority BF 15.2 Browns Ferry Nuclear Plant 6/04/81 LER SUPPLDIENTAL INFORMATION 81032 To. hnical Specification involved 3.5.B.3 BFRO-296 f Iteported Under Technical Sp r'lication,,._6.7.2.b(2)

• Date duc NRC: 7/31/81 D:,re of Occurrence 7/1/81 rime of Occurrence 0500 Unit 3

Wn_tification and 1(epqiption of Occurrence:

le performing SI 2, a crack was discovered at the vent nipple of 3A RHR

ap room cooler coil. The cooler was rc oved front. service to repair the leak, rendering the 3A RHR pump inoperable per T.S. 3.5.D.2.

Conditions Prior to Occurrence:

Unit l fn' refueling outage.

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Unit 2 at 99%

Unit 3 at 96%

Action specified in the Technical Specification Surveillance Requirements met d,ue to inoperable equipment.

Describe.

Met requirements of T.S. 4.5.B.3 and 4.5.B.5.

Appdr3:nt Crise af Occurrence:

Cause unknown - there was a crack at the vent nipple on the 3A RHR pump room cooler coil.

Analy:.i: of Occurrence.

' There was no danger to the health or safety of the public, no, release of activity, no damage to the plant or equipment, and no resulting significant chain of events.

Corree:tive Action:

The crack was silver soldered and a visual inspection performed. This is considered a random event and no f 2rther recurrence control is required.

Failure Data: Nonc Reten t:on :

Per; d - Lifetime; Responsibility - Document Control Supervisor

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