ML20040G852

Interim Significant Const Deficiency Rept 42 Re GE-type Hma Auxiliary Relays,Initially Reported 820107.Excessive Length of Flexible Leads Could Result in Reduced Spacing W/Coil Circuit Terminals.Completion Expected 820528

ML20040G852
Person / Time
Site:	Waterford
Issue date:	02/05/1982
From:	Gutierrez J, Hart J, Mclendon G, Milhiser R, Wills J, Yaeger W LOUISIANA POWER & LIGHT CO.
To:	Jay Collins NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
10CFR-050.55E, 10CFR-50.55E, W3K82-0069, W3K82-69, NUDOCS 8202160537
Download: ML20040G852 (5)

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[MY$SAVIlj G D. McLENDON February 5, 1982 Senior Vice President W3K82-Op69,-

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Mr. John T. Collins, Ibgional Administrator, Ibgion IV, U. S. Nuclear Pegulatory Ccmnission 5s' I f;) h 611 Ryan Plaza Drive, Suite 1000 Uns 3,/ o  :)

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Docket No. 50-382 y, __g Interim Peport of Significant Construction Deficicncy-No i42 p /

"HMA Auxiliary Felays"

Reference:

Telecon - R. Dennett (LP&L) to L. Fhrtin (NRC) on 1/7/82

Dear Mr. (bilins:

In accordance with the requirements of 10CFR50.55(e), we are hereby providing two copics of the Interim Ibport Of Significant Construction Deficiency No. 42, " lima Auxiliary Iblays."

If you have any questions, please advise.

Very truly yours, GDMcL:LLB:ncd . . M Attachnent cc: 1) Director Office of Inspection & Enforcement U. S. Nuclear Pegulatory Ccmnission Washington, D. C. 20555 (with 15 copies of report)

2) Director Office of Managenent Infornation and Program Control U. S. Nuclear Pegulatory Carmission Washington, D. C. 20555 (with I copy of report)

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LOUISIANA POWER & LIGHT COMPANY UATERFORD SES UNIT NO.'3 Interim Report of Significant Construction Deficiency No. 42 ILv.A Auxiliary Relays Reviewed by , fo.,h 2h/h2 R. J. Milliiser - Site Manager Date Reviewed by d J/ L'. Wills - Projpct Superintendent '

f Date Reviewed by '

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Jydiart - Troject Liceping Engineer Date Reviewed by ( kY E!3!?d W. Yaeger - SrY Re . dent Engineer '

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G6tierre'z - Q. A. Sip' Supervisor February 3, 1982 b

J IN1ERIM REPORT T SIGNIFICANT CONSTRUCTICU DEFICIENCY NO. 42 "HMA AUXILIARY REIAYS" INTRODUCTIOi

'Ihis report is sutanitted pursuant to 10TR50.55(e). It describes a deficiency

.in Type HMA Awiliary Relays as manufactured during the period fra 1976 through June,1981. 'Ihe problem is considered reportable under the requirements of 10TR50.55 (e) . To the best of our knowledge, this proble has not been identi-fied to the Nuclear Regulatory Camission pursuant to 10TR21.

DESCRIPTION OF PROBLEM General Electric sent a Service Advice Notice No. 721-PSM-166.1 on L M r 7, 1981, notifying Ebasco of a possible deficiency in Type HMA Auxiliary Relays manufactured during the period from 1976 through June, 1981. It had been deter-mined that the length of the uninsulated flexible leads m M A to the moveable contacts of sme HMA Relays exceeds the allowable dimensions and can result in reduced spacing between the leads and the coil circuit teminals. 'Ih e r d M spacing intredras the possibility of circuit'dudction between the flexible

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leads of the HMA contact circuits and the adjacent coil circuit ternu.nals.

Nonconformance Report No. W3-3361 was initiated by Ebasco on January 6, 1982.

A survey has been conducted for use of the identified Type HMA Relays and a listing of the switchgear affected has been empiled:

6.9 KV-3B1 4.16 KV-3A2, 3A4, 3B2, 3B3, 3B4,'and 3AB3 480V - 3A31, 3B31, and 3B32 SAFETY IMPLICATION Engincering evaluation' indicates that a relay malfunction could result in the failure of both onsite emergency sources of AC; thus,'the condition of GDC 17 of 10TR50, Appendix A, would not be satisfied. If corrective action is not taken, the plant will not be allowed to start.

' CORRECTIVE ACTICN ' ,

, CorrectUi.ve action will be accmplished in accordance with the GE Service Advice

! 721-PSM-166.1 after required material is received. No shipping data is available at this time. Due to lack of material and a cmplex coordination problem created

! by startup system testing, sue are anticipating a coupletion date of May 28, 1982, at which time a Final Report will be submitted to the USNRC.

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'I LOUISIANA POWER & LIGHT COMPANY

. UATERFORD SES UNIT NO. 3 Interim Report-of Significant Construction Deficiency No. 42 S

HMA Auxiliary Relays i (

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R. J. Ji_illiiser - Site Manager Date Revi ved by #d J/ L. Wills - Projjet , Superintendent / Date f/ /

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', x Reviewed by ,, df c JAart-Yroj'ectLicepingEngineer- Date (

t R f . vi sed byW. Yaeger - Sr Re . dent Engineer

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Gutierre'z - Q. A. Si3e' Supervisor

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INTERIM REPORP OF SIGNIFICANT CONSTRUCTIQ4 DEFICIENCY NO. 42 "BA AUXILIARY REIAYS" INTRODUCTIQ4 This report is subnitted pursuant to 10CFR50.55(e). It describes a deficiency in Type HMA Auxiliary Relays as manufactured during the period frm 1976 through June, 1981. The problen is considered reportable under the requirements of 10CFR50.55 (e) . To the best of our knowledge, this problem has not 1;een identi-fied to the Nuclear Regulatory Cmmission pursuant to 10CFR21.

DESCRIPTIG1 OF PROBLH4 General Electric sent a Service Mvice Notice No. 721-PSM-166.1 on December 7, 1981, notifying Ebasco of a possible deficiency in Type an Auxiliary Relays manufactured during the period fr= 1976 through June,1981. It had heen deter-mined that the length of the uninsulated flexible leads connected to the moveable contacts of sme mm Relays exceeds the al3cuable dimensions and can result in reduced spacing between the leads and the coil circuit terminals. 'Ihe reduced spacing introduces the possibility,of circuit connection between the flexible leads of the B A contact circuits and the adjacent coil circuit terminals.

Nonconfomance Report No. W3-3361 was initiated by Ebasco on January 6q _982.

l A survey has been conducted for use of the identified Type E G Relays and a listing of the switchgear affected has been ccrrpiled:

6.9 KV-3B1 4.16 KV-3A2, 3A4, 3B2, 3B3, 3B4, and 3AB3 480V - 3A31, 3B31, and 3B32 SAFETY IMPLICATION Engineering evaluation indicctes that a relay malfunction could result in the failure of both onsite energency sources of IC; thus, the condition of GDC 17 of 10CFR50, Appendix A, would not be satisfied. If corrective action is not taken, the plant will not be allowed to start.

CORRECTIVE ACTIG4 Corrective action will be accmplished in acecM=nce with the GE Service Mvice 721-PSM-166.1 after required material is received. Ib shipping data is available at this time. Due to lack of material and a cmplex coordination problem created by startup system testing, we are anticipating a cmpletion date of May 28, 1982, at which time a Final Report will be subnitted to the USNBC.

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