ML20009E990

Suppl to 810619 Final Deficiency Rept Re Use of Incorrect Size Terminal Lugs for Thermon Heat Trace Sys Resistance Temp Detector.Condition Reportable Per Part 21

ML20009E990
Person / Time
Site:	San Onofre
Issue date:	07/17/1981
From:	Randy Patterson BECHTEL GROUP, INC.
To:	Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
REF-PT21-81 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8107280590
Download: ML20009E990 (1)

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DmBP+2I)s2i ieo veso.e DM 40-30 on 'w/302 Bechtel Power Corporation Engineers - Constructors 12400 East Imperial Highway Norwalk, California 90650 o ao TERWML ANNEX. LOS ANGELES. CALFORNIA 900W rnEmn manueon Y

July 17, 1981 D r g\@ # Y 6- bk nd@# -3; Q pb "

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Mr. Karl Seyfrit N

• d Director, Region IV Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission 611 Ryan Plaza Drive Suite 1000 Arlington, Texas 76012

Subject:

Use of Incorrect Size Terminal Lugs for Thermon Heat Trace System RTD Installations

Reference:

Southern California Edison 10 CFR 50.55(e) report of June 19, 1981, " Final Report on Unqualified Soldering Process in Thermon Heat Trace System Installation."

Dear Mr. Seyfrit:

On May 26, 1981, Southern California Edison San Onofre Units 2 & 3 infonned Mr. Engelken, U.S. Nuclear Regulatory Commission Region V of the subject deficiency. The final report was submitted on Jurs 19, 1981.

Evaluation by Bechtel revealed that incorrect size. terminal lugs were installed on Resistance Temperature Detector wire leads by both Bechtel and Thermon. Based on the evaluation, Bechtel concludes that the condition is reportable under 10 CFR Part 21. The Southern California Edison 10 CFR 50.55(e) report of June 19, 1981 contains all the information required by Regulation 10 CFR Part 21.

Thermon has been notified of their use of incorrect size terminal lugs and will be notified that Bechtel has reported the condition to the NRC.

Other Bechtel Divisions were advised of the defect by copies of appropriate reports and correspondence. Should it be determined that basic components with this defect are in use, have been supplied to or

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. Mr. Karl Sayfrit

' July 17,1981 Bechtel PbwerCorporation Paga two are being supplied for one or more other Bechtel projects, the affected Division will report the condition according to the Regulation.

In the event you need additional information, please contact me.

Very truly yours, BECHTEL POW R CORPORATION R. L. Patterson Manager of Divisien Quality Assurance-RLP:AGC:lm l

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