ML19257C733

DEFR-791213:loss of Adhesion Between Successive Layers of in-containment Coatings Detected.Caused Undetermined

ML19257C733
Person / Time
Site:	Midland
Issue date:	12/13/1979
From:	Howell S CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19257C731	List: ML19257C730 ML19257C733 ML19257C737
References
HOWE-309-79, NUDOCS 8001300209
Download: ML19257C733 (4)

Text

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5tephen H. Howell

.$rnier Vice hrsadent General offleca: 1945 West Parnell Road, Jackson, Michigan 49201 + (517) 788 0453 Dece=ber 13, 1979 Ecve-309-79 Mr J G Keppler A l9f t' #4 Regicnal Director 2 ,o <Y Office of Inspection & Enforcement US Nuclear Regulatory C -ission

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Glen Ellyn, TL 60137

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AIDLAIID NUC 9 PLA !T s' UNIT NO 1, DOCKET No 50-329 ._

UNIT NO 2, DCCKII NO 50-330 CC?CAIN!GT INTERNAL STRUCTURES COATING DEFICIENCY In accordance with the requirements of 10 CFR 50.55(e), this letter constitutes an interi= report en in-centain=ent coatings which have a loss of adhesien between successive layers of the coating syste=. The attach =ents to this letter provide a =cre ce=plete description of the condition and the status of the actions being taken.

Another repert, either interim or final, vill be sent en er before February 15, 1979

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'a?2/1r Attachnent s: 1. Quality Assurance Progra=, Managenent Corrective Action Report , MCAR-1, Report 35, dated November 13, 1979

2. MCAR-35, Interim Report #1, dated Nove=ber 30, 1979 CC: Director of Cffice of Inspection and Enforce:ent Att: Mr Victer Stello, USNRC (15)

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Director of Office of Management Information and Program Control, USNRC (1).

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.  :' 2 Hove-309-79 P.0C: JL3 acon, M-1085A VRBird, JSC-2163 JLCorley, Midland LHCurtis, Bechtel AA LADreisbach, Bechtel-Midland DEHern, Midland GSKeeley, Plk-h08B BW.arguglio, JSC-220A DBMiller, Midland MAPuschel, Pik-232 RLRi.-: ford, Bechtel AA '

JARutgers, Bechtel AA b ibbs, ILLE Great Lakes QA Ms.nagers  !

File: 0.4 9 37 x

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.; . MCAR1 Hove-509-79

, REPORT NO. 35 ~

JOB NO. 7220 0028lb. 0N 2.20 DATE November 13. 1979 I

• DESCRIPTION (Including references): Epoxy decontaminative surfacer applied to Unit 2 containment, northwest primary shield vall and incore tunnel exterior faces from elevation 593'-6" to about 603'-0" exhibits a loss of adhesion between the Nu-Klad 117 (N) surfacer and Acercate 90 (N) top c u t. .

This surfacer was applied by subcontractor J. L. Manta in accordance with requirements of subcontract No. A-15 and specification 7220-A-15(Q) utilising system no. 9 thin coat application.

This condition was first noted by CPCo resulting in issuance of CPCo MCR M01-4-9-132 ~

(attached). (Continued on page 2)

• RECOMMENDED ACTION (Optional)

I. Determine Root Cause. r A. Quantify by =apping and testing coated areas to determine extent of physical problem.

B. Review design specification, subcontractor procedures and Quality records for  ; ([

acceptability of techniques, procedures, equip =ent, and materials used. L C. Perform analysis of caterials used for compliance with design and quality require-meats.

II. Decemine reportability under 10CFR50.55(e) and advise QA no later than Nov. 30, 1979.

(Continued on page 2)

REFERRED TO O ENGINbERING O CONSTRUCTION OOA MANAGEMENT O O PROCUREMENT .

ISSUED BY As cb Prosect CA Entneer II'lW l Date il REPORTABLE DEFICIENCY Potentially Reportable NOTIFIED CLIENT /.//

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O YES 8 Date '

5'!M P. .,ac Manager y 111 CAUSE  !

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Cb CORRECTIVE ACTICN TAKEN r.

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183-]- .;: 3 .2> , h. c...; @e ,# $ g # 11 AUTHORIZED BY j $

l Dale iTANDARD CISTR:8UTICN ADOmONAL 01STAiBUTION . AS APPRCPRfATE ms.oM on waNaGIR INGA(E A8NG waNaGEm FORMAL REPORT TO CLIENT

.aNaosa or ca . rPo Pao 4 CreNG~ era (Il Section 11 Applies)

PD.04 wANAGE4 Date A40 PROCUAtutNT sUPP(fER ovaVTV MCA O Os un actm PnoJ ,P OJ CO Sim seaNaG(m ao4Cf wa=aGin C**(F CoNSTR QC f r GALER N','ao4Cr oeraaroNs uau*Gra CORRECTIVE ACTION IMPLEMENTED e

$sE PacCuae ue Nr uca LOPROCu84u(NTwaNACIA Pno; Pmocum(ut N1 heca ao uom cs ING'N(f A'NG Div *A(R Quaufv MGM ao uGA QF CONSTRUCTCN VERIFIED BY o..u . u- . ... . . ". e ProfeCf CA Enoncer Date

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HCAR 35 L

' liovember 13, 1979 -

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00281i DESCRIPTION: (Con td) /

Approximately 600 sq. ft. of surfacer is currently in question on primary shield and incore tunnel -ith 10-12 sq. ft. already removed during current investigation.

RECOMMENDED ACTION: (Cont'd)

III.

Based upon the results of I, provide recoenended fix and acco=plish repair of #

defec~tive areas.

IV. Take appropriate sr:eps to preclude recurrence.

V.

Provide report to QA by Novecher 30,1979 (interim or final). I:

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