ML20058L089

Ler.On 750920,local Leak Rate Test Indicated Combined Leakage of Drywell Equipment Drain Sump Isolation Valves AO-2561A & B in Excess of Acceptance Criteria.Caused by Lodged Flexitallic Gasket Piece.Seat Cleaned

ML20058L089
Person / Time
Site:	Monticello
Issue date:	11/11/1975
From:	Jenness B NORTHERN STATES POWER CO.
To:
Shared Package
ML20058L058	List: ML20058L055 ML20058L059 ML20058L067 ML20058L074 ML20058L079 ML20058L089 ML20058L105 ML20058L107 ML20058L116
References
LER-LER-751111-05, LER-LER-751111-5, NUDOCS 9105070385
Download: ML20058L089 (1)

Text

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[ isolation valves, A0-2561A and E in excess of acceptance criteria.

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Valve seats cleaned. Retested satisfactory.

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~7 43 44 47 48 CAUSE DESCAIPTION DE l V0GT 2"-800* Gate Valves.

Failed local leak rate test due to piece of flexitallic l 7 89 80 h lrnsket lodged in seat of A0 2561A, gasket material from maintenance on upstream l

7 89 80 BE l valve.

Seat cleaned and valves tested satisfactory.

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