United States Nuclear Regulatory Commission - Protecting People and the Environment

ACCESSION #: 9705300004

                                        Solutions for Today....Standards

                                        for Tomorrow

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March 21, 1997

Document Control Desk

U.S. Nuclear Regulatory Commission

Washington, D.C. 20555

Subject:  Potential reportable defect in BW/IP Electro-Hydraulic

          Actuators, Model number 88500, to properly operate on demand at

          the McGuire Station.

McGuire is performing a root cause investigation, and is communicating

with the hydraulic fluid manufacturer for assistance.  Enertech has

personnel on-site assisting the McGuire personnel, and is in contact with

the actuator manufacturer.  BW/IP (actuator manufacturer) is in the

process of evaluating this event under their Part 21 program.

It is suspected that the hydraulic fluid temperature inside the plunger

area of the solenoid valve exceeded the manufacturers recommendations for

continuous operation and effected the performance of the actuator.


Frank U. Erlach



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