ML20085F665

Preliminary AO 74-14:on 740711,shutoff Discharge Pressure to HPSI Pump P-66A Rated Significantly Low to Raise Question of Possible Pump Degradation.Pump to Be Disassembled to Determine Cause

ML20085F665
Person / Time
Site:	Palisades
Issue date:	07/22/1974
From:	Sewell R CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	Oleary J US ATOMIC ENERGY COMMISSION (AEC)
Shared Package
ML20085F653	List: ML20085F651 ML20085F655 ML20085F657 ML20085F659 ML20085F665 ML20085F671
References
AO-74-14, NUDOCS 8308230130
Download: ML20085F665 (2)

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F sn.,.i on,ces: :H2 West Mec P igan Avenuar, Jackson. M&Chigan 49201. Area Code 617700-0550

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'Q July 22, 1974 Mr. John F. O' Leary, Director Re: Docket 50-255 Directorate of Licensing License DPR-20 US Atomic Energy Commission

• Palisades Plant Washington, DC 20545

Dear Mr. O' Leary:

This letter is written to provide a preliminary report of an aMomal occurrence (No 74-14) which occurred at the Palisades Plant on July 11, 1974. This abnormal occurrence report involves High-Pressure Safety Injection Pump P-66 A.

During quarterly testing of the high-pressure safety injec-r.mn pump, vna enu+ e rr d_ie h nr : pr:::: : , ,: :, friciently t ::, re,te,i to raise the question of possible pump degradation. Shutoff during the original manufacturer's test was 2,850 feet of water while during

- the quarterly test the shutoff head was observed to be 2,537 feet of of water.

A pump head test was perfomed on July 19, 1974 to' determine if pump flow characteristics had been effected. This test revealed that the actual pump head iras less than the manufacturer's head curve throughout the operating range.

The pump vill be disassembled and inspected to determine the cause of the flow de$radation. This disassembly and inspection vill be completed prior to returning the plant to service. An abnomal occur-rence report vill be submitted in the fomat described in Regulatory ,,

Guide 1.21 after completion of these investigations and prior to re-turning the plant to service.

This abnomc1 occurrence has been acsi6 ned No 74-14. The previous abnomal occurrence report submitted in this format was 'as-nigned No 74-12. For plant record purposes, the events described in the report entitled " Palisades Plant Waste Gas Handling System" have been asnigned Abnormal Occurrence Report No 74-13. Thisrepopwas ,

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8308230130 760412 -1,1 PDR S ADDCK 05000255 - ' / b'M PDR

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Mr. John P. O' Leary O O 2, ,

Palisaden Plant July 22, 19714 submitted to Mr. James G. Keppler July 3, 19714, with a copy to the Directorate of Licensing.

. Yours very truly, d),e $ / ,.0 ..A;k t s w t![ '

,. ;: . Ac, RBS/mel Ralph B. Sevell Nuclear Licensing Administrator CC: JGKcppler, USAEC i

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