ML20247P343

Forwards Response to NRC Bulletin 88-010, Nonconforming Molded-Case Circuit Breakers. Confirms That Requested Actions 1,2,3,4,6 & 7 Completed & Testing & Reporting Re Action 5,will Be Completed within 30 Days After Startup

ML20247P343
Person / Time
Site:	Big Rock Point File:Consumers Energy icon.png
Issue date:	03/31/1989
From:	Berry K CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
IEB-88-010, IEB-88-10, NUDOCS 8904060440
Download: ML20247P343 (7)

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7 Consumers POWar Kenneth W Betty ]'

lIlQ9lfERgNG Director

. yyyy3 m Nuclear Ekensing Generet Offices: 1945 West Pernell Road, Jackson, MI 49201 e (617) 788-1636 March 31, 1989 Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 i DOCKET 50-155 - LICENSE DPR BIG ROCK POINT PLANT -

NONCONFORMING MOLDED-CASE CIRCUIT BREAKERS, RESPONSE TO NRC BULLETIN 88-10 NRC Bulletin 88-10 required licensees to take several actions with regard to molded-case circuit breakers in safety-related service, or in stock for safety-related service. The purpose of the actions was to provide assurance that molded-case circuit breakers purchased for use in safety-related applications can satisfactorily perform their safety functions.

NRC Bulletin 88-10 further requires each licensee to provide a written report by April 1, 1989 to confirm that actions requested are complete, or will be completed, and to provide such information as may have been developed in completing the actions. This letter provides Consumers Power Company's initial response to NRC Bulletin 88-10.

In accordance with the provisions of 10CFR50.54(f), this response is j submitted under oath and affirmation. i Kenneth W Berry Director, Nuclear Licensing CC Administrator, Region III, NRC NRC Resident Inspector - Big Rock Point Attachment 8904060440 890331 PDR 0 ADOCK 05000155 l PDC l OC0389-0091-NLO4 I

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CONSUMERS POWER COMPAh7 Big Rock Point Plant I

Docket 50-155 License DPR-6 Response to NRC Bulletin 88-10 Dated November 22, 1988 j At the request of the Commission and pursuant to the Atomic Energy Act of 1954 and the Energy Reorganization Act of 1974, as amended, and the Commission's Rules and Regulations thereunder, Consumers Power Company submits our response to NRC Bulletin 88-10 dated November 22, 1988, entitled, " Nonconforming Molded-case Circuit Breakers." Consumers Power Company's response is dated March 31, 1989 CONSUMERS POWER COMPANY By .

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David P Hoffman, Vi Qecident Nuclear Operations Sworn and subscribed to oefore me this 31st day of March 1989

% AY Elaine E Buehrer, Notary Public Jackson County, Michigan My commission expires October 31, 1989 OC0389-0091-NLO4 o

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ATTACHMENT Consumers Power Company Big Rock Point Plant Docket 50-155 RESPONSE TO NRC BULLETIN 88-10 NONCONFORMING MOLDED-CASE CIRCUIT BREAKERS March 31, 1989 l

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RESPONSE TO NRC BULLETIN 88-10 NONCONFORMING MOLDED-CASE CIRCUIT BREAKERS NRC Bulletin 88-10 required licensees to perform certain actions and report by April 1, 1989, the results of those actions. In accordance with the

" Reporting Requirements" section of the Bulletin, and with the additional 1 guidance of the Staff's letter of February 17, 1989, the following information f is provided:

1.a. Consumers Power Company confirms that, as a result of actions taken, only molded-case circuit breakers (MCB) meeting the criteria of item 7 of the actions requested are being maintained as spares in stock for future use in safety-related applications. l 1.b Stored spares ,

Of 146 MCB's in stock at Big Rock Point, 110 were found not to be '

traceable to the MCB manufacturer as outlined in NRC Bulletin 88-10. An additional MCB in stock from McGowan Electic Supply had already been identified as nonconforming. Thus, traceability of 111 MCB's is in question. These MCB's have been removed from stock and will be retained for one year as directed by the Staff's February 17, 1989 endorsement of NUMARC's clarifications.

The known procurement chain data for these 111 MCB's is provided as Appendix A of this response.

Since less than 80% of in-stock MCB's were found to be traceable to the MCB manufacturer, a review of all MCB's installed in safety-related applications as replacements and/or modification from 1983 to date was also completed. This review identified a total of five MCB that could not be traced to the MCB manufacturer. In accordans, with item 2 of the actions requested, analyses justifying continued tperation (JCO) with the MCBs in service were prepared. As required by item 5 of the actions requested, these suspect MCBs will be removed from service during the 1989 refueling outage, and will be replaced with MCBs meeting the criteria of item 7 of the actions requested. With respect to the Heinemann MCB's, (seventy of which were identified and are listed on Appendix A) it is unknown at this time whether any of these type have been installed in the plant. Investigation will continue through the 1989 Refueling Outage. Should further investigation identify untraceable Heinemann MCB's that are installed, the JCO's will be updated. Should testing of any suspect MCB's be necessary due to l inability to locate adequate replacements, the results of this testing will be reported within 30 days following the completion of the 1989 )

refueling outage. Also, in accordance with the Staff endorsed clarification provided by NUMARC, any tests will be based on manufacturer's recommendations, and NRC will be contacted should such testing differ from that delineated in NRC Bulletin 88-10, Attachment 1.

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The known procurement chain for these five installed MCBs, including '

the systems in which they are installed, is provided as Appendix B of this response. q 1

1.c. Consumers Power Company confirms that requested actions 1, 2, 3, 4, 6 j and 7 are completed, and that testing and reporting according to j action 5, if required, will be completed within 30 days after startup from the 1989 refueling outage.

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, AFPENDIX A Molded-case Circuit Breakers in Stock Manufacturer Vendor Purchase Order as Marked Model Qty GESCO 2002-5117 CQ General Electric TEC 36003 1 GESCO 2002-5117 CQ General Electric TEC 36007 2 GESCO 2002-5117 CQ General Electric TEC 36015 1 GESCO 2002-5117 CQ General Electric TEC 36030 3 i GESCO 2002-5117 CQ General Electric TEC 36050 2 GESCO 2002-5117 CQ General Electric TEC 36100 1 GESCO 2002-5117 CQ General Electric TED 124015 1 GESCO 2002-5117 CQ General Electric TED 125040 1 GESCO 2002-5117 CQ General Electric TED 136020 1 CESCO 2002-5117 CQ General Electric TED 136100 1 GESCO 2002-5117 CQ General Electric TED 136040 1 GESCO 2002-5117 CQ General Electric TED 136070 1 GESCO 2002-5117 CQ General Electric TED 136150 1 GESCO 2002-5117 CQ General Electric TFJ 236153 1 GESCO 2002-5117 CQ General Electric THED 136015 1 GESCO 2002-5117 CQ General Electric THED 136020 2 GESCO 2002-5117 CQ General Electric TFC 36225A 1 GESCO 2002-5117 CQ General Electric TFJ 236225 1 GESCO 2002-5117 CQ General Electric TJJ 436300 1 GESCO 2002-5117 CQ General Electric TJJ 436400 1 GESCO 2000-7227 CQ General Electric THED 136040 1 GESCO 2000-7228 CQ General Electric TEC 36050 1 GESCO 5018-3242 CQ General Electric TED 136050 2 GESCO 1005-1240 CQ Ceneraf Electric TED 136030 4 GESCO LP 15-5943 General Electeic TEC 136015 1 SCI 34490-1601-100 Westinghouse EHB 3020 1 SCI 34490-1601-100 Westinghouse EHB 2070 1 ,

SCI 34490-1601-100 Westinghouse EHB 2060 1 SCI 34490-1601-100 Westinghouse CD2-B2-20-250vde-2 2 Michigan 50463-CQ Heinemann JEl-B3-A-1-3 1 Lectrols JEl-A3-A-1-3 70 Corp Note: All SCI breakers have aux contacts McGowan LP 02-8922 Westinghouse EH 2015 1*

• Refurbished circuit breaker OC0389-0091-NLO4

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, .. APPENDIX B Molded-case Circuit Breakers in Service 1, Application: Condenser Circulating Water Pump #1 Discharge Valve MO-7054 System: CWS Breaker #: 052-1C14 Mfg as Marked: General Electric Co.

Catalog: TED.136020WL Vendor: GESCO P.O. #: 2002-5177 CQ Installed: 02/23/87

2. Application: Fuel Shuffling Winch Undervoltage Trip Circuit System: FHS Breaker #: None Mfg as Marked: General Electric Co.

Catalog: TED 136015 with undervoltage release Vendor: GESCO P. 0 #: LP 02-8960 CQ Installed: 07/28/83

3. Application: Reactor Protection System M-G Set #2 System: SPS Breaker #: 052-2A61 Mfg as Marked: General Electric Co.

Catalog: TEC 16050 Vendor: GESCO P.O. #: 2002-7228 CQ Installed: 06/28/83 ,,,

4. Application: Emergency Circuit Breaker for Service Water Pump 1 System: ASD Breaker #: CB-1441  ;

Mfg as Marked: General Electric Co. )

Catalog: TED 136100WL j Vendor: GESCO i P.O. #: 1006-0049 Installed: 1986

5. Application: Reactor Building Emergency Spray M0-7064 i

System: SPS l Breaker #: 072-10D02 (formerly 072-10D01)

Mfg as Marked: Westinghouse Catalog: EH-2015 Vendor: McGowan Electric Supply P.O. #: LP 02-8922 CQ Installed: 08/11/83 OC0389-0091-NLO4

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