ML20135E116

Part 21 Rept Re Use of Connectron non-IEEE Qualified Matl in Spare Part Terminal Blocks Supplied to Facilities. Appropriate Customers Notified.Terminal Blocks Should Be Reviewed to Identify Defective Matl

ML20135E116
Person / Time
Site:	Palo Verde, Wolf Creek, Byron, Braidwood, Summer, Columbia, Callaway, Waterford, 05000000
Issue date:	09/05/1985
From:	Knecht W ANCHOR/DARLING VALVE CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
References
REF-PT21-85, REF-PT21-85-386-000 PT21-85-386, PT21-85-386-000, NUDOCS 8509160288
Download: ML20135E116 (3)

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Anchor / Darling Volve Company + WILLIAMSPORT, PA 17701 W. G. KNECHT Techmcal Director September 5. 1985 Director-0ffice of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, DC 20555 Subj: 10 CFR Part 21 Reportable Incident Gentlemen:

A potential problem related to terminal blocks which we may have supplied as spare parts was recently determined in our plant.

Connectron manufactures NU2 terminal blocks out of nylon and polysulfore materials. To our knowledge only the polysulfore material has been IEEE qualified for application in our terminal boxes furnished with our hydraulic actuators. These actuators are installed on safety related valves.

We are quite certain that the original equipment furnished to our customer had the correct terminal block material and therefore this problem only pertains to spare parts that we may have furnished.

All customers have been notified of this potential problem and a typical letter is attached for your information. The following plant sites have equipment that was shipped with the correct terminal material and may have spare terminal blocks furnished with wrong material:

Commonwealth Edison Byron Units 1 and 2 Braidwood Units 1 and 2 Union Electric Calloway Kansas Gas and Electric Wolf Creek Washington Public Power Supply Unit 1 Unit 3 South Carolina Electric and Gas VC Summer glh g"WR M$n" , g S

O Louisiana Power and Light Waterford 3 Arizona Public Service Palo Verde Units 1, 2 and 3 Should you require additional information, please contact Mr. J. J. Chappell, our Engineering Manager, or the writer.

Sincerely, ANCHOR / DARLING VALVE COMPANY

&ll c W. G. Knecht cc: A. E. Caron J. J. Chappell G. W. Knieser R. H. Luhta H. L. Patterson i

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Anchor / Darling Valve Company 701 FIRST STREET P.O. BOX 3428 WILLIAMSPORT, PA 17701-0428 -

(717) 327-4800

# ##8 August 26, 1985 BECHTEL POWER CORPORATION P.O. Box 60860 - Tenninal Annex Los Angeles, CA 90060 Attention: W. G. Bingham Project Engineer

Subject:

A/DV MSIV/FWIV Hydraulic Actuators - Terminal Blocks, Connectron Model #NU2

Reference:

1. Customer P.O. 10407-13-MM-234A

2. A/DV S.0. E-9023, MSIV/FWIV

3. Palo Verde Generating Station, Units 1, 2 & 3 Gentlemen:

The subject equipment supplied on the referenced order has been supplied with Connectron tenninal blocks Model #NU2. Connectron manufactures the NU2 terminal blocks out of nylon and polysulfone materials. However, only the polysulfone material has been environmentally IEEE qualified for the subject application.

The originally supplied equipment contained the polysulfone NU2 terminal blocks but any subsequently A/DV supplied spare (replacement) terminal blocks / have been made of nylon or polysulfone.

A/DV recommends that a review of the subject equipment, especially spare parts, be made to verify that all terminal blocks are made of polysulfone material. A/DV's part number for the Connectron Model #NU2 terminal blocks is W-30164, W-30211 or W-32676. Use of the nylon terminal blocks would nullify the IEEE qualification of Class lE electrical control and instrumentation circuits of the subject equipment.

If you need further information or discussions regarding the above, please feel free to contact Bill Knecht, Floyd Bensinger or the undersigned.

Very truly yours, Okt.s Y T. P. Johnso Contract Administrator

/el cc: F. A. Bensinger M. D. Cowell R. H. Luhta A. E. Caron W. G. Knecht / F. Velez J. J. Chappell G. W. Knieser R. H. Belisle G. W. Conlan P. A. Loudenslager S.0. File (2)

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