05000348/LER-1981-028-03, /03L-0:on 810423,accumulator 1B Was Declared Inoperable.Caused by Accumulator Being Initially Pressurized Too Close to Alarm Setpoint.Accumulator Vented & Returned to Svc.Personnel Reinstructed

/03L-0:on 810423,accumulator 1B Was Declared Inoperable.Caused by Accumulator Being Initially Pressurized Too Close to Alarm Setpoint.Accumulator Vented & Returned to Svc.Personnel Reinstructed

ML20004C100
Person / Time
Site:	Farley
Issue date:	05/26/1981
From:	Hairston W ALABAMA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20004C098	List: 05000348/LER-1981-028, Forwards LER 81-028/03L-0 05000348/LER-1981-028-03, /03L-0:on 810423,accumulator 1B Was Declared Inoperable.Caused by Accumulator Being Initially Pressurized Too Close to Alarm Setpoint.Accumulator Vented & Returned to Svc.Personnel Reinstructed
References
LER-81-028-03L, LER-81-28-3L, NUDOCS 8106010515
Download: ML20004C100 (2)

LER-1981-028, /03L-0:on 810423,accumulator 1B Was Declared Inoperable.Caused by Accumulator Being Initially Pressurized Too Close to Alarm Setpoint.Accumulator Vented & Returned to Svc.Personnel Reinstructed

Event date:
Report date:
3481981028R03 - NRC Website

text

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PLEASE PAINT OR TYP3 ALL REQUIRED INFCPMt.TICM la t i l i A l 1. I J l M l F l1 l@l 0 l O ! -l 0 l 0 l 0 l 0 l 0 l-l0 l0 l@l 4 l 1 l 1 l 1 l 1 l@l

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63 61 OOCK ET NLMSER 6d 63 EVENT G ATE 74 75 Ags;RT;ATg 33 EVENT DESCRl* TION AND PROB ABLE CONSEQUENCES h I o l 2 ! l At 1253 on 4/23/81, accumulator 1B was declared inoperable due to high nitrogan l

[ o,3 ; g pressure. Tech. Spec. 3.5.1 requires the 13 accumulator to be operable. Tech. Spec.

t l o 1. l I 3.5.1 action requirements were met.

The health and safety of the public were not.

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SECUENTIAL OCCURRENCE REFCMT 81VIS;0N LER Ro EVENTYSAR REPCRY No.

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u 47 CAUSE DESCalPTION AND CORRECTIVE ACTIONS h Iiiol IThe occurrence was due to the accumulator being initially pressurized to a 'alue too Ii!ii iclose to the alarm setpoint of 6 9 psto.

As containment temperature increased. ac ucu-t iii3i llator pressure increased to the alarm setpoint. Accu =ulator 1B was 1-- adistely vented

] i. 3 e i down to 640psig und was returned to normal service at 1255 on 4/23/81. T:e i-dividuals l 6.ii l involved were instructed to monitor accumulator pressures more closely, especially l

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NAME OF PREPARER PHOaj E:

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LER NO. 81-028/03L-0 CAuSE DESCRIPTION AND CORRECTIVE ACTIONS (Continued) during plant heatups.

Alarm setpoints (low and high) currently coincide with Technical Specifi-cation limits. A review will be conducted to determine desirability of revising the alarm setpoints to slightly above and below the low and high Technical Specification limits respectively in order to receive the alarm without vio-.

lating the Technical Specification requirements.

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