ML20136B022

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Part 21 & Deficiency Rept Re Unreliable Porthole Oil Level Gauge for Auxiliary Feedwater Pumps Supplied by B&W.Metal Insert Behind Sight Glass Trapped Oil Causing False Level Indication.Metal Insert Removed
ML20136B022
Person / Time
Site: Rancho Seco
Issue date: 11/08/1985
From: Reinaldo Rodriguez
SACRAMENTO MUNICIPAL UTILITY DISTRICT
To: Martin J
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
REF-PT21-85, REF-PT21-85-478-000 PT21-85-478, PT21-85-478-000, RJR-85-545, NUDOCS 8511200110
Download: ML20136B022 (2)


Text

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e SACRAMENTO MUNICIPAL UTILITY DISTRICT O 6201 s street. Box 15830. Sacramento. California 9581&,'(916) 452-11

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J.B. MARTIN REGION V 0FFICE OF INSPECTION & ENFORCEMENT U.S. NUCLEAR REGULATORY COMMISSION 1450 MARIA LANE, SUITE 210 WALNUT CREEK, CA 95638 10CFR21 NOTIFICATION This is to inform the Nuclear Regulatory Commission, Region V, of the District's decision that the porthole oil level gauge for the auxiliary feedwater pumps manufactured by Babcock & Wilcox Canada, Ltd. must be reported as a 10CFR21 deficiency.

The pertinent information required by the regulation is included as attachment No. 1.

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10CFR21 REPORT 1.

INFORMANT:

R.J. Rodriguez Assistant General Manager, Nuclear

. Sacramento Municipal Utility District Sacramento CA 96813 2.

FACILITY:

Rancho Seco Nuclear Power Plant Herald, CA BASIC COMP 0NENT:

Auxiliary Feedwater Pump P-318 and P-319 Porthole Oil Level Gauge (OilLevelBullseye) 3.

BASIC COMP 0NENT SUPPLIER: Babcock & Wilcox Canada, Ltd.

Coronation Blvd.

Cambridge, Ontario NIR5V3 INFORMATION NOTE:

This company no longer exists. Spare parts for the Auxiliary Feed Pumps are purchased from Hayward - Tyler, 4.

NATURE OF DEFECT:

The device supplied with the auxiliary feedwater pumps to determine the oil level for the bearings is not a reliable indicator.

The device called th M orthole Oil Level Gauge" is designed with a metal insert behind the sight glass that can cause the oil to be trapped so that a false level of oil is indicated.

5.

DATE OF INFORMATION:

October 1985 6.

NUMBER AND LOCATION:

P-318 and P-319 Auxiliary Feedwater Pumps.

Two places on each pump.

7. ' CORRECTIVE ACTION:

The interim corrective action is to remove the metal insert. The long term corrective action is to design and install an oil level sight-glass.

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