ML19331C330

Part 21 Rept Supplying Addl Info to 800710 Rept Re GE Type SB-12 Switches

ML19331C330
Person / Time
Site:	Grand Gulf
Issue date:	08/01/1980
From:	Mcgaughy J MISSISSIPPI POWER & LIGHT CO.
To:
References
REF-PT21-80-266-000 AECM-80-173, NUDOCS 8008140565
Download: ML19331C330 (5)

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il "k49 jd MISSISSIPPI POWER & LIGHT COMPANY

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f Helping Build Mississippi ur.e.;r+2Ard.a=w! P. O . 8 O X 16 4 O . J A C K S O N . MiSSISSIPP139205 l

NUCLEAR PROCL'CTioN DEPARTMENT August 1, 1980 Office of Inspection & Enforcement U. S. Puclear Regulatory Commission Ret,im 17 101 Maria.ita Street, N.W. - Mb OQd Suita 310')

Atlanta, Georgia 30303 ms D000MEtlT CONTAINS Attention: Mr. J. P. O'Reilly, Director . POOR QUAUTY PAGES

SUBJECT:

Grand Gulf Nuclear Station Units 1 and 2 Docket Nos. 50-416/417 PRD-80/25, 10CFR21 Report, Defective C3-12 Switches AECM-80/173

References:

1) AECM-80/128, 6/12/80

2) AECM-80/152, 7/12/80 s

on July 10, 1980, Mississipp! Power & Light Company sent your office a final report under 10CFR50.55(e) of a deficiency concerning GE Type SB-12 switches. We have since determined that this defi-ciency is applicable to 10CFR21. A supplem.=ntal report containing additional information to the report previously filed under 10CFR50.

55(e) is attached.

Yours truly, W

J. P. McGaughy, Jr.

k Assistant Vice President, Nuclear Production WDH:mt Attachment cc: Mr. N. L. Stampley Mr. Victor Stello, Direct Mr. R. B. McGehee Division of Inspection & Enforcement Mr. T. B. Conner U. S. Nuclear Regulatory Commission Washinrcon, D.C. 20555 8008140 h { ] Member Middle South Utilities System

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. 10 CFR FteT 21 ILEFORT

' l. Idintifiestion of individual (s) informing the 1.RC:

.Name(s):

T. E. Reaves Telephone call to Virgil Brownlee, NRC, Region II 8/1/80.

Address: Mississippi Power & Light Company. P. O. Box 16/.0. Jackson MS 39205 ,

2. Identification of entity failing to comply or containing a defect (check appropriate blocks):

CRA!3D CULT hTC'.1Ut STATICN

-Unit 1 Unit 2 C Other (Specify) -

3. suppliers -General Electric Switchgear Divisien Burlington, Iowa 4 Nature of the defect or f ailure to comply and the safety hazard which is created er could be created by such defect or failure to comply:

See paragraph I & II of Attachment A to MP&L letter AECM-80/152 (attached) ,

5. Date information nbtained for this rerort: 8/1/SO

6. Additional infor: nation for defective coe;onents incer; crated in other facilities, as applicables Number in use, supplied far.

Fac111tv/Locatien dr belne supplied (Not known to MP&L)

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. corteettre Action

See paragraph III of Attachment A to AICI-80/152 (attached)

Responsibility: Mississiao! 7 ewe- & tit?.! Na tit, assurs ce fection (Name of individual or or;ani:stien)

Tine negutted to cceptete Letten: Began 11/11/79: 'Comelete at close of >! CAR-GGNS ASC (esti= ate 9/S0)

9. Advice related to the defect or f ailure to curly akout the f ac1* *ty. .attivit?. er basic cerrecent that has teen. is teing, er will be given to ;wrchazars c 11censees: .

SRC II Circular No. 79-17 was issued 3/11/79. Also. GI. Installatier and Eervice En:;ineering Divistun forwarded Ser.* ice Advice SF?(073F No. 330.1~

to 3echtel Pever Cor:cratien. AE fer GONS. On IlliISO.

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FISSISSIPPI PCT.G & LIGHT CGGY I Pw cCIALLY FIPCRI;GI.I EEFICIDK'Y (FTO) PPD = 80/26 I 4

I. DESCRIPTIQ:: (Include nonconfor.2nce dccm.t)

See Faragraph I, QA For: 16.20(A), Rev. 3, attached.

II. DIT. E3MI2G. TION OF uru.T Q1 SAFE OPERATIGJ OR SUPSTANTIAL STEEIY HEARD:

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N See Paragraph II, QA Form 16.20(A), Rev. 3, attached 3 Could have adversely affected the safe operation of the. plant or is a substantial safety hazard.

8 Unable to detemine within one working day of receipt m

7a Signature _ _Date Organization

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w III. E52fATION OF POTENTIAL REPORTIGILITY:

o Not Reportable e

@ Reportable w -

2 Potentially Reportable 5

O or Unable to De*2 mine N

d Signature Date O m1ity Assurance g See Paragraph II, CA Form 16.20(A), Rev. 3. attached s2 IV. NJf!FICATIQ4 'IO NRC:

c E Persan Notified: H s Notification 5 -

Was Made:

e A Notified By: Date:

y See Paragraph III, QA Form 16.20(A), Rev. 3, attached T V. E5JEATIG; OF Fe?rcASILITY: Reportable Under 10CFR50.55 (e) 5 10 3 21 1CCFR21 Use Only-Seador Vice Pre.s dent VI. PICFIPT OF Ih~~O.R!ATION: Date Tire Sig.ature Date Signature VII. PZPORT 'IO NRC:

Due Date, 6/11/80 7/10/80 Sutrcittal Date 6/12/80 7/10/80 Intter !?rber AEOi-80/12S AEDi-80/152 Sill. CORTIIVE ACIION VERIFICATICN:

MISSISSI??I ?OWER & LIGHT CCMPANY

?RD 80/

?0TENTIALLY ?I?ORTA3LE DEFICIENCY (?RD) NUM3ER 26

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r e n r_= e~,aL L'v es As a result of investigation based on IE Circular 79/17, Eechtel has 12 identified eight (8) switchgear units containing defective S3-12 switches.

r ach switchgear is furnished with two (2) SB-12 switches. The switches Us contain an inter =ittent contact proble uhich will cause a lack of continuity through the contact of the switch used to energize the trip ,

- coil of the circuit breaker. The switchgear units are used in the 6.9 KV system used for controlling the recirculating pu=ps.

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-. Initiated By: T. E. Reaves, Jr. Organization: MP&L Date:5/12/80 u

II. EVALUATION OF POTENTIAL ?2?ORTA3ILITY:

Rationale: Concurrence:

The potential exists that, should the Yes so Inifia} Date condition re=ain uncorrected, it could Manager QA X _!LL6cK 5// /30 adversely affect the safety of operations of the Nuclear Power Plant. Project Mgr. f sg afs?

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See Attachment "A" + Dir. of ?wr Prod.

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_ III. NOTIFICATION TO NRC: Person Notifie : M. Hunt How Notification 'a'as e Made: Telephone 3

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A y Notified By: ,. Racey Date: 5/12/80 h IV. EVALUATION OF REPORTIBILITY:

• Sationale: Concurrence:

m v Ye s _N_o Initial Da te 4

p, Manager QA __

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4 Project Mgr. --

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5 Dir. of ?v 2 rod. __

V. RE? ORT TO NRC:

6/11/80 Due Date:

Submitted Date:

Letter Nu=ber .

V!. CCRRECTIVE ACTION VI.RIFICATICN:

Sy. Date:

+ Required should agree =ent not be reached between Mgr QA and ?roject Mgr.

Attachment "A" to PPO 80/26 l

I The use of S3-12 switches in this particular application would have no adverse impact on plant safety since they are used in non-safety related. .-

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switch gear. Therefore, this specific-deficiency is not re,aertable under 10 CFR 50.55(e) . However, since adverse impact may restit from other appli-cations, as yet unknown, this deficiency is considered to be potentially-reportable and requires evaluation of its generic implications, if any, O

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Helping Build Mississippi NN$ P. O. B O X 16 4 0. J A C K S O N. MISSISSIPPI 39205 uu team:cu:no.senAmerc '

July 10, 19SO Office of Inspection & Enforcement U. S. Nuclear Regulatory Cc==ission Regica II 101 Marietta Street, N.W. .

Suite 3100 '

Atlanta, Georgia 30303 Attention: Mr. J. P. O'Reilly, Directer

Dear Mr. O'Reilly:

SU3 JECT: Grand Gulf Nuclear Statica Units 1 and 2 Docket Nos.. 50-416/417 File 0260/15525/15526 PRD-SO/26, Final Repert, Defective 53-12 S. itches (Ref.: AECM-SO/

128, June 12, 1550)

AICM-80/132 On May 12, 19S0, Mississippi Pcwer & Light Cc pany notified Mr. M. Eunt of your of fica'of a Pctentiall/ Reportable Deficiency (PRD) at the Grand Gulf Su:lrar Station (GGNS) constructica site.

Tne deficiency concerns CE Ty .e S3-12 switches.

We have since determined this deficiency to be reportable with-in the caning of ICCrit50.55(e). Details are described in the at-tached final report. We are evaluating the applicability of 10C?R21 and will subnit a report upon cenpletion.

Ycurs truly, 1

Of /

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&&s fpp- J. P. McGaughy, Jr.

Assistant ice President ,

Nuclear Production ATR:nt Attach ent cc: Mr. N. L. Stanplay Mr. Victor Stello, Director Mr. R. B. !!cGehee Divicion of Inspecticn & Enforcement Mr. T. B. Conner U. S. I;uclear Regula tory Co-rission Washington, D.C. 20555 bec: Dr. D. C. Gibbs Mr. J. P. McGaughy Mr. J. U. Yelverten Mr. T. H. Clonincer Mr. L. F. Dale Mr. 7. . A. Anbrosine M r . J . N . Wa rd Mr. C. K. McCoy Mr. A. Zaccaria Mr. C. L. Tyrone Mr. E. L. Nail PRD Fi!(

Dape- Sep717m3&o -

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- Attcch c A to AIOI-50/152 Tage 1 ( l FINAL REPOAT, ?RD-80/26

1. Descriotion cf Deficiener Defective S3-12 switches identified in IE Circular 79-17 vere found to be installed in switchgear supplied by tha vendor.

~he defect is an inter =ittent contact prcble: which will cause lack cf centinuity through the "n" contact'of the switch that is used to enargize the trip ceil of the circuit breaker.

II. Safetv inolications .

The 53-12 switches are used in the circuit breakcrs of the 6.9 l'V switchge t units which control the reactor recirculation pu ps. The safety ft_nction cf the breaker is to . trip on a signal frc: the Reacter Protection System. The pcstulated failure of the S;-12 switch would prevent the e:iergining of the trip coil thereby preventing the breaker frc: fulfilling its intended safety functien.

III. Cerrective Action Taken The vendor will furnish new S3-12 rwitches to correct the condi-tion and preclude recurrence, i

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l DUPLICATE DOCUMENT I

f i Entire document previously ,5 g DS 8567/7040% l entered into system under: j ANO o7[7 h Oh >

f No. of pages: j

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