ML20100B463

Final Part 21 & Significant Const Deficiency Rept Re Emergency Diesel Generator Fuel Pump Valve Holders.Initially Reported on 850109.Bechtel Will Replace All 48 Affected Components

ML20100B463
Person / Time
Site:	Hope Creek
Issue date:	02/12/1985
From:	Martin T Public Service Enterprise Group
To:	Murley T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
REF-PT21-86-024-000 PT21-86-024-000, PT21-86-24, NUDOCS 8503280349
Download: ML20100B463 (3)

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Public Service Electric and Gas Company Thomas J. Martin 80 Fark Plaza. Newark, NJ 07101 201430-8316 Mailing Address: P.O. Box 570, Newark, NJ 07101 Vica President Engineering and Construction February 12, 1985 Dr. Thomas E. Murley, Administrator U. 4 Nuclear Regulatory Commission Office of Inspection and Enforcement Region I 631 Park Avenue King of Prussia, Pennsylvania 19406

Dear Dr. Murley:

SIGNIFICANT CONSTRUCTION DEFICIENCY EDG FUEL PUMP VALVE HOLDER HOPE CREEK GENERATING STATION On January 9, 1985, a verbal report was made to Region I, Office of Inspection and Enforcement representative, Mr. E.

Kelly, advising of a significant construction deficiency concerning a possible defect in the fuel injector pump delivery valve holders on our Emergency Diesel Generators.

The following final report is provided in accordance with 10CFR50.55(e).

Description of the Deficiency Colt Industries has advised our Architect / Engineer and Constructor, Bechtel, of a possible defect in the fuel injection pump delivery valve holders on our Emergency Diesel Generators. Colt states that a fatigue crack can occur at the filter seat radius (shown on attachment) and progress to the holder O.D. The crack results from an insufficient radius at the filter seat, causing a stress riser at this point. This may result in leakage of fuel oil under high pressure during the injection stroke.

There are twelve (12) potentially defective pump delivery valve holders on each of our four (4) Emergency Diesel Generators. This deficient condition is being controlled and documented by Nonconformance Report No. 5950.

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Dr.- T. E. Murley 2 2/12/85 Safety Analysis Bechtel has evaluated the safety implications and determined that if the fuel injection pump delivery valve holder problem had gone undetected and the unit cracked, leakage of fuel oil under high pressure would create a potential fire hazard in the diesel generator bay through the presence of vaporized fuel oil. This could result in the failure of the associated diesel generator.

The Emergency Diesel Generators are safety related items of equipment and under Loss of Power (LOP) conditions, they provide power to class lE motor control centers and other safety related equipment required for safe shutdown of the plant. Therefore, we conclude that the subject deficiency could adversely affect safe shutdown of the plant and we consider it reportable in accordance with 10CFR50.55 (e) .

Corrective Action In accordance with instructions received from Colt Industries, Bechtel will replace all forty-eight (48) of the affected components with acceptable replacements provided by the manu-facturer. This activity will be witnessed and documented by Bechtel Quality Control personnel.

Very truly yours,

/

Attachment C. Office of Inspection and Enforcement Division of Reactor Construction Inspection Washington, D. C. 20555 1 NRC Resident Inspector - Hope Creek P. O. Box 241 Hancocks Bridge, NJ 08038 Records Center Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 Atlanta, GA 30339

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l 14. 0-Ring (93-009 150)

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15. Discharge Fitting Ring

16. Delivery Valve Spring

17. Discharge Fitting Nut 3,N '

18. Delivery Valve Holder Holder 0.D.

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