ML20049J587

Responds to 770823 Notice of Violation.Corrective Actions: Contractor Spec Changed to Clarify When Insp Points Are Applicable & Pipe Rupture Restraint Welds Repaired

ML20049J587
Person / Time
Site:	Diablo Canyon
Issue date:	09/21/1977
From:	Crane P PACIFIC GAS & ELECTRIC CO.
To:	Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
Shared Package
ML20049J565	List: ML20049J585 ML20049J587
References
FOIA-81-435 NUDOCS 8203180423
Download: ML20049J587 (2)

Text

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' PACIFIC GAS AND ELECTR,IC COMPANY

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7 7 B L AL E ST R E ET. 31 ST F LOO R . SAN FR ANCISCO. C ALtFORN4 A 941C6 . (415 ) 7 B * .4 2

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t Mr. R. H. Engelken, Director Office of Inspection and Enforcement Region V 0 ; f. , N U. S. Nuclear Regulatory Co:amission t.* -@  ; ,

Walnut Creek Plaza, Suite 202 u -

.Ci 1 1990 North California Boulevard C

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Walnut Creek, California 94596 [,.

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Re: Docket No. 50-275-OL og - r.s-Docket No. 50-323-OL s

Dear Mr. Engelken:

On August 23, 1977, the NRC issued a Notice of Violation to PGandE identifying a construction activity at Diablo Canyon not in full L

compliance with NRC requirements. In accordance with 10 CFR 2.201, this i

report states the action taken to correct the discrepancy and to prevent recurrence.

The Notice of Violation was issued because pipe-rupture re-straint-steel field weld documentation was found not to conform to the contractor's specification. Two specific items of nonconformance that involve field weld documentation are listed in the notice. The first addresses Field Weld FW-40 and points out that the root pass was not I inspected as evidenced by "NA" on the process sheet. The contractor's specification ESD-243, paragraph 2.5.1, references American Welding Society, Dl.0-69, and lists seven inspection points such as fit-up, preheat, root pass and final inspections. These inspection points are intended to be applied only as required by AWS Dl.0-69 and PGandE I

Specification 8833XR. Neither AWS Dl.0-69 nor 8833XR require root pass i

inspection on fillet welds such as FW-40; therefore the "NA" is approprs ate on the process sheet. The contractor's specification ESD-243 has been changed to clarify when the listed inspection points are applicabic-

' The second nonconformance listed fourteen Unit 1 pipe-rupture restraint welds that were not final inspected as evidenced by "NA" on the process sheets. All process sheets for Unit 1 and 2 pipe-rupture restraint welds have been reviewed. Inspection or repair as required has been performed to correct documentation and inspection deficienciesq 8203180423 811118 PDR FOIA SCHNELK81-435 PDR

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l I Mr. R. H. Engelken 2 September 21, 1977 At the time of the audit, only Unit 2 documentation had been reviewed.

Subsequent to your audit, the review of Unit 1 documentation and neces-sary corrective actions were completed.

The contractor, Pullman Power Products, has held meetings with his inspectors to emphasize specification requirements and the importance of proper inspection documentation. We believe these actions are adequate to prevent recurrence of the violation.

Very truly yours, A

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