ML20096A778

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Final Deficiency Rept Re Defective Capstan Springs in Pacific Scientific Mechanical Shock Arrestors.Initially Reported on 840106.W/o Description of Investigation & Corrective Actions.Related Correspondence
ML20096A778
Person / Time
Site: Midland
Issue date: 07/27/1984
From: Jackie Cook
CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
30356, 83-11-#4, OL, NUDOCS 8408310259
Download: ML20096A778 (1)


Text

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James W Cook Ql Vice President = Projects, ngineersng 3

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General offices: 1945 West Pernell Road, Jackson, MI 49201 + ($17) 7850453 July 27, 1984

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J-83-11 #

Mr. J G Keppler, Regional Administrator US Nuclear Regulatory Commission Region III 799 Roosevelt Road Glen Ellyn, IL 60137 MIDLAND ENERGY CENTER PROJECT DOCKET NOS 50-329 AND 50-330 0L POTENTIAL DEFECTS IN MECHANICAL SHOCK ARRESTORS FILE:

0.4.9.83 SERIAL: 30356

Reference:

J W Cook letters to J G Keppler, same subject:

1) Serial 26651, dated January 6, 1984
2) Serial 28041, dated March 16, 1984
3) Serial 30268, dated May 4, 1984 The referenced letters were interim 10CFR50.55(e) reports concerning defective capstan springs in Pacific Scientific mechanical shock arrestors.

This is a final report.

Because further investigation could not eliminate the possibility of eventual capstan spring failure in Midland equipment and because those failures could have prevented some mechanical shock arrestors from performing their intended safety functions, this condition is considered reportable under the requirements of 10CFR50.55(e). Attachment I describes the investigation of the concern and the correction actions that have been completed or planned.

JWC/AHB/cd

Attachment:

1) MCAR 75, Final Report, dated July 2, 1984 CC: Document Control Desk, NRC Midland NRC Resident Office Washington, DC Midland Nuclear Plant DSHood, USNRC Office of NRR INFO Records Center 8408310259 840727 PDR ADDCK 05000329 S

PDR OC0784-C018A-MP01

.