05000296/LER-1981-010-03, /03L-0:on 810213,drywell High Pressure Switch 3-PS-64-58C Found Above Tech Spec Limit.Caused by Setpoint Drift.Switch Recalibr & Will Be Replaced

/03L-0:on 810213,drywell High Pressure Switch 3-PS-64-58C Found Above Tech Spec Limit.Caused by Setpoint Drift.Switch Recalibr & Will Be Replaced

ML20008E929
Person / Time
Site:	Browns Ferry
Issue date:	03/06/1981
From:	TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20008E924	List: 05000296/LER-1981-010, Forwards LER 81-010/03L-0 05000296/LER-1981-010-03, /03L-0:on 810213,drywell High Pressure Switch 3-PS-64-58C Found Above Tech Spec Limit.Caused by Setpoint Drift.Switch Recalibr & Will Be Replaced
References
LER-81-010-03L-01, LER-81-10-3L-1, NUDOCS 8103100516
Download: ML20008E929 (2)

LER-1981-010, /03L-0:on 810213,drywell High Pressure Switch 3-PS-64-58C Found Above Tech Spec Limit.Caused by Setpoint Drift.Switch Recalibr & Will Be Replaced

Event date:
Report date:
2961981010R03 - NRC Website

text

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8 60 Si DOCK ET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 AFCRIPTION AND PR06 A8LE CONSEQUENCES h E

10121 l During normal overstion, while perfoming SI h.2.B-5. drvwell high pressure switch l

ITT~n 13-PS-64 58C (LPCI Pemissive) was found 1.54 above the technical specification 3.2.B l g g Ilimit. Pressure switches 3-PS64-58A. B and D vere operable. There was no significant i o i s i I resulting event. There was no danger to health or safety of public. Previous event: l 1 o 16 I l IRO-50-2MM0042 l

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• ec Valley Authority rorm BF-17 Brc,wn.. Ferry Nuclear Plant BF 15.2 1/10/79 LER SUPPLEMENTAL INFORMATION 3.2.B 296 / 81010 Terhnicat specifa.at',on inv ih !,,

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2/13/81 7,.;.,. c f Occurrence

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t.in. y[ n an.1 Der.criptica 'of occurrence:

While performing SI. 4.2.B-5, drywell high pressure switch 3-PS-64-58C was found 1.5%

above the Technical Specification 3.2.B limit.

Gonilitions Prior to Occurrenec:

Unit 1 0 98%

We Unit 2 @ 97%

We Unit 3 @ 100% We Teclini.i! Specification Survrillance i: u p u r.r.c r ::, me.t d

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Causa of event was-setpoint drift.

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'There was no damage to plant equipment. There was no activity release, no personnel exposure or injury and no danger to, the health or safety of the public, t'..,

.t v/' Atibn :'

Pressure switch 3-PS-64-58C was recalibrated to proper setpoint and functionally tested for repeatability. Switch will be replaced by DCR 1398.-

Failuro D.ita:

BFRO-50-296/80042, 296/77006, 259/73021, 260/77014, 260/78023, 260/79019, and 260/80030.

W:Ntention:

Period - Lifetime; Responsibility - Administrative Supervisor

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