ML20132D385
| ML20132D385 | |
| Person / Time | |
|---|---|
| Site: | Hope Creek  |
| Issue date: | 07/10/1985 |
| From: | Martin T Public Service Enterprise Group |
| To: | Murley T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| NUDOCS 8507310362 | |
| Download: ML20132D385 (3) | |
Text
e Public Service Electric and Gas Company Thomas J. Martin 80 Park Plaza Newark, NJ 07101 201-430-8316 Mailing Address: P.O. Box 570, Newark, NJ 07101 Vice President Engineering and Construction Dr. Thomas E.
Murley, Administrator U.
S.
Nuclear Regulatory Commission Office of Inspection and Enforcement Region I 631 Park Avenue King of Prussia, Pennsylvania 19406
Dear Dr. Murley:
SIGNIFICANT CONSTRUCTION DEFICIENCY INCOMPATIBLE GREASE - LIMITORQUE OPERATORS HOPE CREEK GENERATING STATION On December 19, 1984, a verbal report was made to Region I, Office of Inspection and Enforcement representative, Mr.
J.
Strosnider, advising of a construction deficiency concerning the addition of grease to Limitorque operators that is in-compatible with the grease supplied by the manufacturer.
On January 21, 1985, a final report was submitted to your office.
The following information is provided in accordance with 10CIR50.55(e).
On June 3,
1985, a verbal report was made to your office advising that Station Maintenance personnel may have improperly lubricated 146 Limitorque valve operators by adding valve stem lubricant (Exxon Unirex N-2 grease) to the valve operators.
Exxon Nebula EP-0 is the approved lubricant for these Limitorque operators.
We have previously determined that the potential exists for the grease to cake or run out of the operators when incompatible greases are mixed.
Hence, operation without failure cannot be assured.
In that some of the Limitorque operators perform safety related functions, we cannot assure that the safe 8507310362 850710 gDR ADOCK 05000354 4h PDR l
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Dr. T.
E. Murley 2
7/10/85 c
operation of the plant would not be adversely affected.
We, therefore, consider this condition to be reportable in accordance with 10CFR50.55 (e).
We have developed remedial and preventive measures addressing the problem.
The remedial measures include:
1.
Reinspecting the 146 valve operators in question.
Removing the incompatible grease.
Cleaning the operators and applying the proper lubricant.
2.
Arranging for immediate vendor training to ensure proper disassembly / reassembly of valve operators.
3.
Given that as many as three different lubricants may be applicable to a particular valve and operato:
assembly, the lubrication manual is being revised to incorporate pictures of all valve and operator configurations to ensure that there is no question as to where the correct lubricant is to be applied.
The preventive measures include:
1.
Train all appropriate craft, supervisory and quality assurance personnel to ensure that the different valve /
operator configurations are understood relative to lubrication.
Revise the appropriate Maintenance Department procedures to reflect the lessons learned from this incident.
2.
Revise Maintenance Department procedure MD-AP.ZZ-009 (0)
" Control of Station Maintenance" to highlight the need for clear, precise wording of all work orders and to encourage the use of pictures as an aid to clarity.
3.
Revise SA-AP. ZZ-009 (Q) to provide guidelines for what to do if one is confused or does not understand given instructions.
Train all appropriate personnel in these procedure changes.
9.-.... -, ~,
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O Dr.
T.
E. Murley' 3
7/10/85 Our intention is to complete the remedial actions by July 30, 1985, and the preventive measures by September 30, 1985.
To date, 136 of the 146 valves have been inspected, cleaned and regreased with the correct lubricant.
Very truly yours, C
Office of Inspection and Enforcement Division of Reactor Construction Inspection Washington, D. C.
20555 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
's s Atlanta, GA 30339