U-602580, Part 21 Rept Re Itt Barton Hydramotor Actuator Pump Assembly Failed to Develop Hydraulic Pressure During Testing.Caused by Pump Not Being Fitted Properly

Part 21 Rept Re Itt Barton Hydramotor Actuator Pump Assembly Failed to Develop Hydraulic Pressure During Testing.Caused by Pump Not Being Fitted Properly

ML20116B931
Person / Time
Site:	Clinton
Issue date:	05/08/1996
From:	Connel W ILLINOIS POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20116B926	List: ML20116B925 U-602580, Part 21 Rept Re Itt Barton Hydramotor Actuator Pump Assembly Failed to Develop Hydraulic Pressure During Testing.Caused by Pump Not Being Fitted Properly
References
REF-PT21-96 U-602580, WC-142-96, NUDOCS 9607300354
Download: ML20116B931 (2)

Text

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lihnois Power Company g

Chnton Power Station P.o. Dox 678 1

Clinton,IL 61727 Qh-Tel 217 935 5623 i

Fax 217 935 4632 Wilfred Connell Vice Presidsnt ILLIN91S P&WER U-602580 4F.140 WC-142-96 May 1, 1996 i

Docket No. 50-461 10CFR21.21 Document Control Desk l

Nuclear Regulatory Commission Washington, D.C. 20555 l

Subject:

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

Dear Sir:

g, On Merch 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 The pump was withdrawn from stores and installed during an overhaul of the actuator.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, 9607300354 960725 PDR ADOCK 05000461 S

PDR

i U-602580 Page 2 Part 21 and will notify the NRC of the determination in a final report following completion j

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, WNhw'Y.

/

WilfConnell 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 c'.

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