05000324/LER-1980-080-03, /03L-0:on 801019,during Testing,Reactor Instrument Penetration Isolation valves,X76-B,failed to Reopen.Caused by Bakelite Nipple Breaking Off Actuation Switch.Switch Module Replaced & Valve Successfully Cycled

/03L-0:on 801019,during Testing,Reactor Instrument Penetration Isolation valves,X76-B,failed to Reopen.Caused by Bakelite Nipple Breaking Off Actuation Switch.Switch Module Replaced & Valve Successfully Cycled

ML20002A734
Person / Time
Site:	Brunswick
Issue date:	11/17/1980
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20002A733	List:
References
LER-80-080-03L-01, LER-80-80-3L-1, NUDOCS 8011210452
Download: ML20002A734 (1)

LER-1980-080, /03L-0:on 801019,during Testing,Reactor Instrument Penetration Isolation valves,X76-B,failed to Reopen.Caused by Bakelite Nipple Breaking Off Actuation Switch.Switch Module Replaced & Valve Successfully Cycled

Event date:
Report date:
3241980080R03 - NRC Website

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60 69 DoGKET NUMSER 81 8 69 EVENT OATg T4 76 REPORT 0 ATE 80 EVENT OESCRIPTION AND PROB ABLE CONSEQUENCES h gl During the performance of Containment Atmosphere Monitoring System Component Test l

PT 24.2, the reactor instrument penetration (RIP) isolation valves X76-B, would not j

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reopen which made the containment atmosp eric control (CAC) monitors 1259, 1260, l

,,,,,g 1261 and 1262 inoperable due to loss of sample f.bv through the penet stion. This l

g, g g event did not affect the health or safety of the public.

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lNlg lXl9l9l9lg AbN 3J 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h l773 j l The actuation switch, manufactured by Master Specialties, was found to have its bake-l gg lite nipple broken off, which prevented the switch actuatica plunger from resettin:;

I the switch contacts after the valve was closed. The entire switch module was replace 4 g

g and the valve was successfully cycled. This is considered an isolated event with no l g further action required.

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