ML20050D467

Interim Deficiency Rept Re Electrical Components Associated W/Msiv Actuators,Logic Cabinets & Panel Inserts.Next Rept Expected by 820601

ML20050D467
Person / Time
Site:	Midland
Issue date:	04/01/1982
From:	Jackie Cook CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
10CFR-050.55E, 10CFR-50.55E, 16-150, 82-01-#2, 82-1-#2, 82-12, NUDOCS 8204120233
Download: ML20050D467 (5)

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Reference (1) J W Cook Letter to J G Keppler, Stee Subject,

Serial lh683, dated February L,1982 Thia letter, an was the referenced letter, is an interim 50.55(e) report concerning deficiencien in electrical componento accociate1 with anin t e:c isolatien valve actuators, logic cabinete and control ranel incerts.

Attachr.ent 1 providen a currary of the actionc being tnken to reaolve the problem.

Another report, either interin or final, will be cent on or before June

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1982.

s WHB/1r Attneh;ent 1:

PCAR-55, Interir Eerort 2, "Deficienclea in Electrical Ccapenentr Acce2iated with MJIV Actuators, Lccic Cabineta, and Centrol Panel Innerts," dated " arch 12, 1982 C t' D e,' ent t'ent rol Deak, !.RC Washir.cten, Di:

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BStamiris CRStephens, USNRC WDPaton, Esq, USNRC FJKelley, Esq, Attorney General SHFreeman, Esq, Asut Attorney General WHMarshall l

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SUBJECT:

MCAR 55 (Issued 1/15/82)

Deficiencies in Electrical Components Associated with MSIV Actuators, Logic Cabinets, and Control Panel Inserts INTERIM REPORT 2 DATE:

March 12, 1982 PROJECT:

Consumers Power Company Midland Plant Units 1 and 2 Bechtel Job 7220 Introduction This interim report is prepared in response to Midland Project Management Corrective Action Report (MCAR) 55.

This report summarizes the investiga-tions and actions taken to resolve MCAR 55.

Description of Discrepancy Main steam isolation valves (MSIVs) and actuators were supplied by Energy Products Group (EPG), a division of Gulf and Western Manufacturing Company, under Purchase Order 7220-M-118A(Q). The logic cabinets and control panel inserts were vendor supplied units not covered in detail by the valve specification, and were of f-the-shelf commercial grade items without seismic qualification. Review of the MSIV actuator design and accessories also revealed that certain components of the hydraulic actuator, that must operate in order for the MSIV to perform its safety function, were not seismically qualified.

Potential Safety Problem A potential safety problem exists if a failure or any of the electrical com-ponents result in failure of the MSIV to perform its safety function as described in the FSAR.

Investigation / Corrective Action Summary The following actions have been initiated or completed to resolve this situation.

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1)

Technical Specification 7220-M-238(Q), Rev 0, main steam isolation valve electrical modifications, was prepared to procure materials that would correct the deficiencies and nonconformances that were identified in the existing electrical equipment. This specification is being issued to Gulf and Western for a quotation. The scope of work to be covered by the specification is summarized below. The corrective actions satisfy the requirements of Items 1 and 2 of MCAR 55.

A)

Actuator 1)

Seismically and environmentally qualified ED-170 NAMCO limit switches, essential mounting brackets, wiring, and flexible conduit will be provided. Modification of the actuator will bring it into compliance with the seismic requirements of 7220-M-238(Q) and the separation criteria of Regulatory Guide 1.75.

2)

All information available regarding qualification of the actuator trip solenoids and solenoid valves will be obtained.

B)

Logic Cabinets 1)

Provide four (4) new logic cabinets to meet the seismic and i

environmental qualification requirements and criteria as defined in Specification 7220-M-238(Q). Only one electrical channel will be contained in the cabinet.

C)

Control Panel Inserts 1)

Modify or replace four (4) control panel inserts to meet the seismic and environmental qualification requirements and criteria as defined in 7220-M-238(Q).

2)

The applicable codes and standards for the MSlV electrical equipment

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have been identified and are listed in Section 4.0 of Technical j

Specification 7220-M-238(Q).

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3)

All MSlV Class 1E electrical component deficiencies have been added to the Qualification Open Action Summary dated March 11, 1982. This action satisfies Corrective Action 3 of MCAR 55.

I 4)

The main steam isolation valve, Specification 7220-M-118A, identified the qualification requirements for the valve and actuator. However, the vendor supplied logic cabinets and control panel inserts were not i

supplied in accordance with a recognized qualification program; a fact which was not detected by the MCAR 25 re-review. Specification 7220-M-238(Q) was prepared to correct the deficiencies and nonconfor-mances that exist in the MSIV electrical equipment.

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'6272i The scope of MCAR 25 did not require review of the specification to determine adequacy of imposed qualification requirements. It 6,L0ii reviewed the specification requirements against the FSAR (e.g.

safety, seismic Category I, adequacy of qualification reports to specification requirements).

Review of equipment specifications in preparation for NRC audits of seismic and environmental qualifications will ensure that unresolved problems are identified. This process coupled with tracking of all NCRs in accordance with EDP 4.61 provides assurance that acceptable qualifications will be provided. The above addresses the recommended Action Item 4 of MCAR 55.

5)

Investigation of all Q-listed valve orders on the Midland project revealed that electrical components associated with logic cabinets and control panel inserts that were provided with inadequate quali-fication requirements were unique to Purchase Order 7220-M-ll8A(Q) only.

Actuators provided on Q-listed valve orders identified on MCAR 46 for qualification requirements and documentation problems are being resolved on MCAR 46 to satisfy FSAR commitments. Actuators and electrical com-ponents on orders not identified on MCAR 46 are being identified and investigated for adequate qualifications and documentation. This status will be provided in the next MCAR report. This action addresses the recommended action of item 5, MCAR 55.

6)

The root cause of the problem was identified and defined in MCAR 55, Interim Report 1.

This action closes Item 6 of MCAR 55.

Reportability Based on the deficiencies that exist in the equipment and the magnitude of the effort required to make any necessary repairs, we have determined that the subject of this MCAR is reportable within the requirements of 10 CFR 50.55(e).

Submitted by: d. 2[dap T.G. 4fallweg U Mechanical Group Supervisor hbu 4

Approvedby(:

(L.H.'Curti6 Project Engineering Manager Concurrence by:.

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s E.H. Stdith '

Engineering Manager Concurrence by:

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M.A. Dietrich Project Quality Assurance Engineer TCB/DAK/am(M) 3/9/11