United States Nuclear Regulatory Commission - Protecting People and the Environment

ACCESSION #: 9605070295

                                                  Illinois Power Company
                                                  Clinton Power Station
                                                  P. O. Box 678
                                                  Clinton, IL 61727
                                                  Tel 217 935-5623
                                                  Fax 217 935-4631

                                                  Wilfred Connell
                                                  Vice President
ILLINOIS
  POWER
                                                       U-602580
                                                       4F.140
                                                  WC-142-96
                                                  May 1, 1996

Docket No.  50-461                                10CFR21.21

Document Control Desk
Nuclear Regulatory Commission
Washington, D.C.  20555

Subject:  10CFR21 Interim Report 21-96-004: ITT Barton
          Hydramotor Actuator Pump Assembly Failed to Develop Hydraulic
          Pressure During Testing

Dear Sir:

     On March 6, 1996, Illinois Power (IP) identified the failure of a
pump assembly for an ITT Barton series NH95 hydramotor actuator as a
condition potentially reportable under the provisions of 10CFR, Part 21.
The pump was withdrawn from stores and installed during an overhaul of
the actuator.  The function of the pump is to develop the hydraulic
pressure to operate the actuator.  During testing of the hydramotor
actuator following the overhaul, the pump failed to develop hydraulic
pressure.  IP suspects that the pump did not develop pressure because it
may not be fitted/ported properly.  The pump assembly has been returned
to ITT Barton for inspection.  The pump assembly is ITT Barton part
number NS109761EQX07.

     IP has not completed the evaluation of this condition required under
the provisions of 10CFR, Part 21 and cannot do so until the supplier
completes the inspection to determine the reason for the failure of the
pump to develop pressure.

     ITT Barton has informed IP that the inspection of the pump assembly
is scheduled to be complete by December 31, 1996.  IP will evaluate the
ITT Barton inspection results when received to determine the
reportability of this issue under the provisions of 10CFR,

                                                  U-602580
                                                  Page 2

Part 21 and will notify the NRC of the determination in a final report
following completion of the evaluation.  Additional information about
this issue may be obtained by contacting J. W.  Blount, Engineering
Projects, at (217) 935-8881, extension 3638.

                                             Sincerely yours,

                                             Wilf Connell
                                             Vice President

RSF/csm

cc:  NRC Clinton Licensing Project Manager
     NRC Resident Office, V-690
     Regional Administrator, Region III, USNRC
     Illinois Department of Nuclear Safety
     INPO Records Center
     ITT Barton

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