ML20087D358

Responds to NRC Re Violations Noted in IE Insp Rept 50-354/83-18.Corrective Actions:Seven Nonconforming Hangers Will Be Reworked to Obtain Required Depth of Weld Penetration at Skewed T-joints

ML20087D358
Person / Time
Site:	Hope Creek
Issue date:	02/28/1984
From:	Martin T Public Service Enterprise Group
To:	Murley T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20087D317	List: ML20087D358
References
NUDOCS 8403130372
Download: ML20087D358 (3)

Text

a Thomas J. Martin Publ.'c Serviu Electric and Gas Company 80 Park Plaza Newark N.J.07101 201/4304316

%ce President Engineering and Construction February 28, 1984 Dr. Thomas E. Murley, Administrator U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region I 631 Park Avenue King of Prussia, Pennsylvania 19406

Dear Dr. Murley:

NRC INSPECTION REPORT 50-354/83-18 NO. 1 UNIT HOPE CREEK GENERATING STATION Your letter dated January 30, 1984, transmitted the above referenced Inspection Report which contained a Notice of Violation citing one item of noncompliance. The following response is provided in'accordance with the Notice of Viola-tion.

As described in the referenced Inspection Report, hanger 1-FC-007-H10 (Q) had been fabricated utilizing a fillet weld where design requirements call for a partial penetration weld.

Corrective Steps Taken and Results Achieved Bechtel Power Corporation, our Architect / Engineer and Constructor, has issued Nonconformance Report No. 2729 to document and control

- the discrepancy identified on pipe hanger 1-FC-007-H10 (Q) . In accordance with the disposition on the Nonconformance Report (NCR) ,

this hanger has been reworked to obtain the required depth of weld penetration at the skewed T-joint.

An investigation was~ performed.to determine the cause of this-discrepancy. We have determined that the components.for hanger 1-FC-007-H10(Q) had been fabricated at the Off-Site Fab Shop prior to December 2, 1982, but had not been reinspected in response 3

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Dr. T. E. Murley 2 2/28/84 to NRC Inspection Report No. 82-15. The components for this and 498 other hangers had not been reinspected because they were in storage or in transit at the time.

A review of the design drawings for the 498 hangers, and subsequent inspection as applicable, identified seven additional welds with inadequate depth of weld penetration. These seven include the three hangers previously identified to your Resident Inspector.

The review also identified seven hangers fabricated at the Off-Site Fab Shop prior to December 2, 1982, which cannot be located either in storage or as installed.

Bechtel has issued NCR No. 3140 to document and control the seven discrepant hangers and the seven missing hangers. In accordance with the disposition to NCR No. 3140, the seven nonconforming hangers will be reworked to obtain the required depth of weld penetration at the skewed T-joints. The disposition also requires that the replacement components for the missing seven hangers be fabricated and identified with new release numbers to preclude inadvertent installation of the original seven. The applicable Quality Control Inspection Records include special instructions to verify that the release numbers differ from those assigned to the missing hangers.

4 Corrective Steps Taken To Preclude Recurrence The corrective action previously taken in response to NRC Inspection No. 82-15 remains in effect. In accordance with Quality Control Instruction W-1.00, Special Instruction No. 8, the inspection activity codes have been changed from a surveillance activity to an inspection activity for fit-up of partial penetration hanger welds. This action has been in effect since December 2, 1982.

On November 18, 1983, Quality Control Engineers were reinstructed on the proper inspection methods to measure depth of weld preparation for groove welds and to assure that inspaction is parformed on all-partial and full penetration welds associated with pipe hangers.

Date of Full Compliance The date of full compliance will be March 12, 1984.

-Very truly yours,

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Dr. T. E. Murley 3 2/28/84 cc: Office of Inspection and Enforcement Division of Reactor Construction Inspection Washington, D. C. 20555 NRC Resident Inspector - Ilope Creek P. O. Box 241 IIancocks Bridge, NJ 08038 4

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