0CAN078605, Part 21 Rept Re Deviation from Purchase Order Specifying Environ Qualification for Limitorque-supplied Buchanan 724 Terminal Strips.Initially Reported on 860712.All Strips Returned.Limitorque Operators Under Continuing Review

Part 21 Rept Re Deviation from Purchase Order Specifying Environ Qualification for Limitorque-supplied Buchanan 724 Terminal Strips.Initially Reported on 860712.All Strips Returned.Limitorque Operators Under Continuing Review

ML20204E792
Person / Time
Site:	Arkansas Nuclear
Issue date:	07/16/1986
From:	Enos J ARKANSAS POWER & LIGHT CO.
To:	Martin Mr D, Martin R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
REF-PT21-86, REF-PT21-86-271-000 0CAN078605, CAN78605, IEB-85-003, IEB-85-3, PT21-86-271, PT21-86-271-000, NUDOCS 8608010258
Download: ML20204E792 (3)

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ARKANSAS POWER & LIGHT COMPANY POST OFFICE BOX 551 UTTLE ROCK. ARKANSAS 72203 (501)371-4(IB July 16, 1986 rc OCAN078605

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S 2)\ l Mr. Robert D. Martin Regional Administrator [lj

, JUL 2 81986 U. S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 1000 Arlington, TX 76011

SUBJECT:

Arkansas Nuclear One - Unit 1 & 2 Docket No. 50-313 and 50-368 License No. DPR-51 and NPF-6 10CFR Part 21 - Terminal Strips

Dear Mr. Martin:

In preparation for the current ANO-2 refueling outage, AP&L solicited a quote from Limitorque for 15 Buchanan 524 terminal strips for use in Limitorque operators. The Buchanan 524 terminal strips are environmentally qualified and made of a phenolic material.

Limitorque responded that 524 strips were not available and that Buchanan 724 terminal strips were the correct replacement, like in form, fit ,and -

function. AP&L subsequently placed a purchase order with Limitorque for 15 Buchenan 724 terminal strips. The Purchas'e Order also specified ,

environmental qualification be established to the same requirements as the 524 strips and certified to test report B0119 which documented the qualification.

The 15 724 strips were received with a Certificate of Conformance to test report B0119 equating environmental qualification to the 52? strips. The 724 strips were accepted and placed into stores.

Some of the 724 strips were issued for installation in valve operators; however, as the electricians were carrying the strips to the work site, environmental qualification personnel noted that the strips were white in color instead of the expected black (phenolic) strips. Work was stopped and an investigation begun.

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e July 16, 1986 From the investigation it was learned that the Buchanan 700 series (including 724) terminal strips are manufactured in nylon or polypropylene materials (which are only white in color). Our environmental qualification personnel were suspicious of the white colored terminal strips as they generally equate white with nylon instead of phenolic material. We have been unable to identify any documentation which establishes that the 724 terminal strips meet the environmental qualification of the 500 series (including 524) phenolic terminal strips.

As such, AP&L concluded that a deviation from the Purchase Order existed.

Althoegh none of the 724 terminal strips were actually installed, they had passed receipt inspection and were issued. Thus there was a possibility that they could have been installed in safety related operators which could possibly have created a substantial safety hazard. In accordance with 10CFR21, AP&L concluded that a defect in a basic component existed.

This conclusion was reached at 12:20 on July 11, 1986. The Vice President Nuclear Operations was notified at 8:30 on July 12, 1986 and your office was verbally notified at about 11:30 that same date. This letter constitutes the required 5 day written followup report.

Followup Actions All 15 720 terminal strips have been returned to Limitorque for an evaluation of their environmental qualification status.

Inventoried parts have been reviewed to assure that no other white terminal strips are in stock for environmental qualification applications.

We are reviewing Purchase Orders placed with Limitorque to determine any similar situations where parts substitution has taken place. From this we will be able to identify situations where similar substitutions could possibly exist.

The AP&L Quality Assurance organization has been notified of this issue and will be asking Limitorque to respond.

As part of the IEB 85-03 work during the current ANO-2 outage, terminal strips and other parts of Limitorque operators are being reviewed. We have established listings of qualified parts. Any terminal strip installed in Limitorque operator that is not on our list is being replaced (regardless of the status of its environmental qualification) with a terminal strip established as acceptable by the list. A similar activity will be conducted on ANO-1 operators during its refueling outage currently scheduled to begin on August 22, 1986.

Ver ruly y ,

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J. Ted Enos, Manager Nuclear Engineering and Licensing JTE/sg k

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'3 f July 16, 1986 cc: Mr. James M. Taylor, Director Office of Inspection and Enforcement

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