ML20058L105

Ler.On 750930,while Performing Local Leak Rate Test,Crd Isolation Valve CRD-31 Found Leaking in Excess of Acceptance Criteria.Caused by Accumulation of Scale on Seating Surface. Cleaned & Lapped Valve Seats

ML20058L105
Person / Time
Site:	Monticello
Issue date:	11/11/1975
From:	Mcvay J NORTHERN STATES POWER CO.
To:
Shared Package
ML20058L058	List: ML20058L055 ML20058L059 ML20058L067 ML20058L074 ML20058L079 ML20058L089 ML20058L105 ML20058L107 ML20058L116
References
LER-LER-751111-06, LER-LER-751111-6, NUDOCS 9105070388
Download: ML20058L105 (1)

Text

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61 68 69 74 75 80 EVENT DESCr# TION l While pe rformine local leak rate test, CRD outboa rd isolati,n valve CRD-31 was l

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l fn-a leakinc in excess of the acceptance criteria. One similar previous event.

l 7 e9 eo El l Cleaned valve seats.

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• 7 43 c4 47 4e CAUSE DESCAtPTON M I raned leak test due to accu.wlation of scale on seatine surface, 3-inch. 900-1b.

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Vendor drawing number 2257-5, Anchor Valve Conpany.

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