RBG-30445, Provides Util Interim Response to NRC Bulletin 88-010, Nonconforming Molded-Case Circuit Breakers. Extension Until 890515 Requested to Provide Final Response to Bulletin

Provides Util Interim Response to NRC Bulletin 88-010, Nonconforming Molded-Case Circuit Breakers. Extension Until 890515 Requested to Provide Final Response to Bulletin

ML20248C940
Person / Time
Site:	River Bend
Issue date:	03/31/1989
From:	Booker J GULF STATES UTILITIES CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
IEB-88-010, IEB-88-10, RBG-30445, NUDOCS 8904110353
Download: ML20248C940 (6)

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• GULF STATES UTILITIES COMPANY RIVER BEND STAflON POST OFFICE BOX 220 $i FRANCl6VILLE. LOUISIANA 70775 AREA CODE 604 635 6094 346 8661 March 31, 1989 RBG - 30445 File Code G9.5, G9.33.1 U. S. Nuclear Regulatory Commission Document Control Desk Washington, D.C. 20555 Gentlemen:

River Bend Station - Unit 1 Docket'No. 50-458 NRC Bulletin 88-10 This letter provides Gulf States Utilities Company's (GSU) interim response to NRC Bulletin 88-10, " Nonconforming Molded-Case Circuit Breakers".

identified all molded case circuit As required breakers (CBs by)this bulletin, purchased GSU prior has 1, 1988, that were being maintained to August as stored spares for safety-related (Class IE) applications or commercial grade CBs that were maintained as stored spares for future use in safety-related applications. This identification included CBs purchased from a circuit breaker manufacturer (CBM) or from any other source. A total of 1471 CBs from 13 different vendors were identified. A list of these vendors and the number of CBs obtained from each is provided in Attachment 1.

Documented evidence such as Certificates of Conformance (C of C) were reviewed to establish traceability to a CBM or to a QA audited vendor.

Certificates from parties other than the CBM were originally considered to be acceptable provided the vendor had been audited to 10CFR50 Appendix B program prior to procurement. Based on this definition of traceable, as of March 1, 1989, GSU had determined all Bulletin 88-10 applicable circuit breakers to be traceable.

1 On March 14, 1989, GSU obtained additional NUMARC/NRC information and clarifications concerning NRC Bulletin 88-10. This information was contained in a NilMARC memorandum to the NUMARC Board of Directors dated March 9, 1989, which contained as an enclosure a letter dated February 17, 1989, from the NRC to NUMARC. After reviewing this new information GSU determined that additional evaluation would be required in order to determine traceability of the subject CBs to a CBM in a fashion acceptable to the NRC as meeting the requirements of Bulletin 88-10.

l 8904110353 890331 PDR Q

ADOCK 05000458 PDC

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NRC/ Bulletin 88-10 Page 2 GSU has undertaken this additional evaluation and, to date, has determined 98.0% of the CB subject to Bulletin 88-10 concerns to be traceable to a CBM.

The evaluation for the remaining 2.0% which represents 30 CBs has not been completed. This part of our evaluation is scheduled for completion April 15, 1989. The vendors supplying these remaining CBs are listed in Attachment 2.

GSU has just entered into a refueling outage. This outage represents the first outage starting after March 1,1989, as listed in Bulletin 88-10 as a schedule point for a number of items. GSU's outage began March 15, 1989, and is scheduled to be complete May 5, 1989. Since GSU's initial evaluation resulted in all breakers being considered traceable, efforts that might have been required during this outage to respond to Bulletin 88-10 were not considered. GSU is unable at this point to consider any of those potentially required actions until after the remaining evaluation is completed.

In light of the above discussion, GSU requests an extension to provide a final response to this bulletin. GSU proposes to provide to the NRC by May 15, 1989, the final results from the ongoing evaluation for traceability. At that time and as dictated by those final results, GSU will provide for NRC concurrence a schedule or an exemption request with justification for any required testing and a schedule for the consideration, if any is required, of CBs installed in the plant in accordance with Actions Requested paragraphs 4 and 5 in the bulletin.

Finally, as of March 17, 1989, all CBs retained in stock as spares that might be installed in safety related applications that have not been traced to a CBM have been placed on hold. These breakers will not be installed in the plant until after traceability is verified. Additionally, in accordance with bulletin Action Requested paragraph 7, GSU has verified that all CBs installed in safety related applications after August 1,1988, were traceable tc a CBM.

If you have any questions or desire further information, please contact Mr.

L. L. Dietrich of my staff at (409) 839-3011.

Sincerely,

, f. 0' J. E. Booker Manager-River Bend Oversight River Bend Nuclear Group JEB/LLD/ch Attachments ,

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UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION

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STATE OF. LOUISIANA )

l PARISH OF WEST FELICIAM )

Docket No. 50-458 In the Matter of- )

l GULF STATES UTILITIES COMPANY )-

(River Bend Station - Unit 1) l l

AFFIDAVIT J. E. Booker, being duly sworn, states. that he is Manager-River Bend. Oversight for Gu.1f States Utilities' Company; that-he is. authorized on the part of said company to sign and file with the Nuclear Regulatory Commission the

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documents attached hereto;. that; he has read all. of the-statements contained in such documents attached- thereto arid l

made a part thereof; and that'all such statements made and matters set forth therein are true and correct to the~best of 1

l his knowledge, information and belief.

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• % j IJ E. Booker l Subscribed and sworn to before me, a Notary Public in and for the State and Parish above named, this 3/ day of j 77)(A A pl. , 19 99 . My Commission expires with Life.

U OALO L . hYW Notary Public in and for l l West Feliciana Parish, Louisiana 1

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cc: .U. S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 1000 Arlington, TX 76011 NRC Senior Resident.. Inspector P.O. Box 1051 St. Francisville, LA 70775 l

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x. q ATTACMENT 1 l Molded Case Circuit Breakers Supplied to RBS t Maintained as Stored Spares and Intended for Safety-Related Applications j i

, VENDOR fJMBER'0FCBs-  !

Gould, Inc. 810 Square D  :'391 Telemecanique 195 General. Electric 37 Elgar Corporation 9 i

G. A. Technology 7

B. B. C. Brown Boveri 6 Customer Service Electric Service 6 Comsip, Inc. 2  !

i T. D. I. 2 j Geeco Company 2  ;

Power Conversion Products 2 Thermon 2 Total- 1471 r

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• ATTACHMENT 2 Safety-Related Molded Case Circuit Breakers Still Undergoing Evaluation for Traceability VENDOR CBM* NUMBER OF CBs Elgar Corporation GE 9 G. A. Technology Heinemann 7 B. B. C. Brown Boveri Could/ITE 6 Comsip Incorporated ITE Pushmatic 2 T. D. I. Heinemann 2 Power Conversion Products Westinghouse 2 Thermon Square D _2 Total 30

• as determined physically, e.g. markings on breakers