ML19323B445

LER 80-027/03L-0:on 800408,during Surveillance Test,Turbine First Stage Pressure Bistable PB447E Found to Trip,At Value Less than Tech Spec 3.3.2.1 Limit.Caused by Instrument Setpoint Drift.Loop Power Supply Card Adjusted

ML19323B445
Person / Time
Site:	Farley
Issue date:	05/05/1980
From:	Hairston W ALABAMA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19323B441	List: ML19323B440 ML19323B443 ML19323B445
References
LER-80-027-03L, LER-80-27-3L, NUDOCS 8005120380
Download: ML19323B445 (1)

Text

. LICENSEE EVt:N ! HEPORT .

80051A0 3 80

~ CO57 Rot 8LcCx: l l l l l l l@ (PLEASE PRINT OR TYPE ALL REQUIRED INFOnt.tATION)

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7 8 60 69 DOCKET NLudEa W 6J EVENT DATE 74 75 REPORT CATE 80 EVENT DESCRIPTION AND PROBA8LE CONSECUENCES h

[o 12 l l During performance of surveillance test FNP-1-STP-213.18B the Turbine First Stage g.

,,,,,y Pressure Sistable PB447E was found to trip at a value less conservative than T/S y g 3.3.2.1 upper limit (56.4. psia actual vs. 55 psia or less required). At 1248 on g

,, 3, ,4-8-50 the affected channel was declared inoperable. T/S 3.3.2.1 action statements g

,,g ,;were met. The health and safety of the public were not affected. ,

10171 I ,

I totali I 7 e, so SYSTEM CAUSE CAUSE COVP. VALVE CCOE CODE $U3COOE COMPONENT CODE SUSCODE SUSCO E lolol 7 8 l Il Bl@ W@ lG l@ IJl Il Nl Sl Tl Rl U[@ {@ ]@

9 10 11 12 18 39 ;3

- SEQUE NTI AL CCCURRENCE REPORT REVISION LER EVENT YE AR REPOR T NO. CODE TYPE N O.

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4 IWill2l0lg g 4; CAuSE DESCRIPTICN AND CORRECTIVE ACTIONS

[i l O l l The Loco Power Sunolv Card P0Y-447 used for PB447E was adjusted to give the proper I li li i l bistable tric value. FNP-1-STP-213.18B Channel Calibration was satisfactorily I

, l performed and the channel was returned to an operable status at 1435 on 4-8-80. l l i l 3 l l Cause was ins trument setpoint drift. g 11 14 l I I T as so STA $  % POWER OTHER STATU3 SCO RY i s NA Dl3COVERY DESCRIPTION h l El@ l 0 l 9 l 8 l@l l l Bl@l Performance of Surveillance Test l ACTIVI TY CO TENT RELE ASED OF AELE ASE AMOUNT OF ACTIVI'TY LOCATIO'N OF RELEASE 7

i c 8 9 lZl@ 1!@l Id it NA 44 l l 45 NA 30 l

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l NAME OF PAEPARER

. C. . Fairston. III (205) 899-5156 1

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