ML19331C958

Interim Deficiency Rept Re Inconsistent cross-referencing Between B&W & Bechtel Numbering Sys Affecting Instrument Sys.Review of All Project Documents to Correct Component Numbering Will Be Complete by 810101.Related Correspondence

ML19331C958
Person / Time
Site:	Midland
Issue date:	08/13/1980
From:	Jackie Cook CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:
References
8811, NUDOCS 8008200462
Download: ML19331C958 (4)

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- 0 50f Vice President, Msdland Projecs c.a.<.i ove.cm 1945 w.,i r.ra n ao.o. Jacm,on. uien. a 4srot . ast 7: 7ss-o64o August 13, 1980 Mr J G Keppler, Regional Director Office of Inspectica and Enforce =ent

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US Nuclear Regulatory Cc=sissien Region III 799 Roosevelt Read d

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Glen Ellyn, IL 60137 e d MIDLAND NUCLEAR PLANT 9 .[ ,

UNIT NO 1, DOCKET NO 50-329 p

46 UNIT NO 2, DOCKET NO 50-330 3 g c.? '

NSSS COMPONENT IDENTIFICATION FILE: 0.h.9.39 UFI: 73*10*01, 02h00(S) SERIAL: 8811

Reference:

J W Cook letter to J G Keppler, dated May 22,' 1980, Sa=e Subject, Serial 8987 In accordance with the require =ents of 10 CFR 50.55(e), this letter constitutes an interi report concerning incensistent cross-referencing between B&W and Bechtel nu=hering syste=s affecting instru=ent syste=s in Midland Plant Unit 2.

The attachment to this letter provides the status of acticns being taken to resolve this issue.

Another report, eitber interim or final, vill be issued on or before October 31, 1980.

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WRB/1r hc es JY Attach =ent 1: MCAR-38, Interi: Report #3, dated July 31, 1980 CC: Directer of Office of Inspection and Enforcement Att: Mr Victor Stello, USNRC (15)

Directer of Office of Manage =ent Infer =ation & Fregram Centrol, USNRC (1)

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ei 2 Serial: ,

8011 BCC: SHHovell, P26-336B JLBacon, M-1085A

• RLBaker, B&W AA RCBauman, P1k-k12 WRBird, Pik-kl8A JLCorley, Midland LHCurtis, Bechtel AA LEDavis, Bechtel-Midland LADreisbach, Bechtel-Midland

• GREagle, CPCo AA DFJudd, B&W GSKeelef, Plk-113B BWMarguglio, JSC-220A DBMiller, Midland JARutgers, Bechtel AA CJSullivan, P2h-62hA MEGibbs, IL&B File: 0.k.9 39 IWSmith, Esq, ASLB GALinenberger, ASLB Panel ~ _

ASLB Panel AS&L Appeal Panel .

FPCowan MMCherry, Esq MSinclair CRStephens, USNRC KDPaton, Esq, USERC FJKelly, Esq, Attorney General SHFreeman, Esq, Asst Attorney General GTTaylor, Esq, Asst Attorney General

! WHMarshall GJMerritt, Esq, TNK&J ,

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1 6 Attechmsnt 1 Serial: 8811

SUBJECT:

MCAR #38 (Component Identification) dated March 11, 1980 010475 .

INTERIM REPORT #3 ' Date: July 31, 1980 Project: Consumers Power Company Midland *lant Units 1 & 2 Rechtel Job 7220

. In, troduc tion This report is submitted regarding the interim status and actions taken pursuant to MCAR #38.

Description of Discrepancy Inconsistent cross-referencing has occurred on Unit 2 between B&W and Bechtel numbering systems for B&W-supplied instrument systems [Non-Nuclear Instrumentation (NNI), Integrated Control Systees (ICS), Emergency Core Cooling Actuation System (ECCAS), and Nuclear Instrumentation and Reactor Protection System (NI/RPS)] and other components. This inconsistent cross-referencing has resulted in inconsistent wiring of B&W-supplied syste=s. If the inconsistent wiring were to re=ain uncorrected, it can be postulated that the ICS and NNI would not function properly and that some incorrect indications would be displayed to the operator.

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The most probable cause appears to be some cdsinterpretation by design personnel---

regarding the system of cross-referencing between the B&W and Bechtel component numbering system for Unit 2.

Status and Actions Taken ,,

In a meeting between Consumers Power Company, Bechtel and B&W on July 7,1980, it was agreed that no changes in co=ponent nutabering are required, but the instrument index and electrical schemes are being revised to consistently apply the approp ' ate Bechtel/B&W instrument cross-references.

Of the 928 Unit 2 cables placed on engineering HOLD pending resolution of the wiring inconsistencies, 841 correct cables were released on July 17, 1980, for pulling. Eighty-seven incorrect cables, including 37 cables already pulled and ter=inated, remain on HOLD and are being revised on the schemes.

The Midland project Cocponent Numbering Task Group (CNTG) is actin to plan, schedule, monitor, report, and cause complete implementation of remedial actions. The CNTG is presently reviewing the design documents for the B&W instrument systens involved (NNI, ICS, ECCAS, and NI/RPS) to identify and correct all numbering and wiring inconsistencies.

Safety Implications Based on the expressed concern that the inconsistencies could result in inappro-priate operator action which could adversely affect the safety of plant operations, we conclude that the deficiency should be classed within the " adverse 'to safety" requirement of 10 CFR 50.55(e).

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Corrective Action Status On July 8,1980, the CNTC commode 0 he[ikv of all affected project documents to identify and correct the component numbering inconsistencies. Complet2on target date is January 1,1981. -

Reportability Based on the safety implications ,tated above, we conclude that the subject deficiency is reportable under 10 CFR 50.55(e). This is due to the fact that the deficiency will be classed within the " adverse to s afety" requirement of 10 CFR 50.55(e) AND it has been determined to be within the "significant deficiency in final design" requirement. -

Submitted by: . /Y1 ( /, _

[.M. Anderson Approved by: M A hL.H. Curt d Concurrence by: .

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K.D. iTey-Concurrence by: W a

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