ML20005F000

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Responds to NRC Bulletin 88-004, Potential Safety-Related Pump Loss. Util Revised Plant Operating Procedures for Hpcs,Lpcs & RHR Pumps & Vibration Monitoring Program Expanded to Include ECCS Pumps at Plant
ML20005F000
Person / Time
Site: Clinton Constellation icon.png
Issue date: 01/05/1990
From: Jamila Perry
ILLINOIS POWER CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
IEB-88-004, IEB-88-4, JSP-0010-90, JSP-10-90, U-601532, NUDOCS 9001120160
Download: ML20005F000 (2)


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U-601532

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!! JSP-0010-90 f January 5, 1990 l

t Docket No. 50-461

'I U.S. Nuclear Regulatory Commission Document Control Desk ,

I Washington, D.C. 20555  ;

Subject Clinton Power Station Respgnse to NRC Bulletin No. 88-04 I

Dear Sir 5

Illinois Power Company (IP) has completed the long-term '

resolution actions addressed in response (U-601223) to NRC Bulletin 88-04, " Potential Safety Related Pump Loss" dated  !

July 12, 1988. The attachment provides IP's response.

I hereby affirm that the information in this letter is correct to the best of my knowledge.

~

Sincerely yours, i

l l

S. P rry f Vice President REL/krm Attachment l '

l cca Regional Administrator, Region III, USNRC H NRC Clinton Licensing Project Manager i NRC Resident Office Illinois Department of Nuclear Safety 9001120160 900105 PDR ADOCK 05000461 JIIE3.I E

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. Pag 3 1 of 1

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Response to NRC Bulletin 88-04 Lona Term Resolution Actions Actions Resuested:

Illinois Power Company's (IP) response to NRC Bulletin 88-04 identified the following long-term resolution actions:

(1) Evaluate changes to the plant operating procedures for the High Pressure Core Spray (HPCS), Low Pressure Core Spray (LPCS), and Residual Heat Removal (RHR) systems to minimize l the time they are in the minimum flow mode. l (2) Evaluate a program which will routinely monitor the pump vibration signatures. l ResDonse:

(1) IP has revised the plant operating procedures for HPCS, <

LPCS, and RHR pumps to include a precaution to minimize  ;

operation-when these purps are in the minimum flow mode.

(2) The vibration monitoring program has been expanded to

include the Emergency Core Cooling System (ECCS) pumps at i

Clinton Power Station (CPS). The surveillance task cards for these pumps have been updated to include a requirement to obtain normal vibration data during the performance of surveillance testing. However, as this is a non-technical specification activity, the inability to collect vibration data will not inhibit completion of the surveillance test.

Baseline vibration data has already been obtained for the RHR "A" and "B" pumps, and the LPCS and RCIC pumps. Data will be obtained for the remaining ECCS pumps during future

, surveillance runs. The initial data on RHR "A", "B" LPCS

! and RCIC revealed no obvious problems. The data already l obtained and subsequent data will be monitored for any j changes or abnormalities.

l The following is a list of the surveillance task card numbers and frequency for each pump.

Surveillance Task Pump Card Number Frecuency RHR A 9053.07A21 12 weeks RHR B 9053.07B21 12 weeks RHR C 9053.07C21 12 weeks LPCS 9052.01R21 12 weeks HPCS 9051.01R22 12 weeks l RCIC 9054.01A22 12 weeks

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