ML20092M096

Interim Deficiency Rept SD-56 Re Tubeco Weld Radiographs. Initially Reported on 840519.S&W Engineering Reviewing Radiographs.Next Rept Will Be Provided by 840920

ML20092M096
Person / Time
Site:	Millstone
Issue date:	06/18/1984
From:	Counsil W NORTHEAST NUCLEAR ENERGY CO., NORTHEAST UTILITIES
To:	Murley T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
F0557A, F557A, SD-56, NUDOCS 8407020130
Download: ML20092M096 (2)

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aoarwast .uusan awaav cow-June 18,1984 Docket No. 50-423 F0557A Dr. Thomas E. Murley Regional Administrator Region i U.S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, PA 19406

References:

(1) T. T. Martin to W. G. Counsil, IE Inspection Report No. 50-423/83-14, dated November 22, 1983.

(2) W. G. Counsil to T. T. Martin, A03651, dated December 22, 1983.

(3) W. G. Counsil to T. T. Martin, F0454A, dated March 16, 1984.

Dear Dr. Murley:

Millstone Nuclear Power Station, Unit No. 3 Reporting of Potential Significant Deficiencies in Design and Construction Tubeco Weld Radiographs (SD-56)

In a May 19, 1984 telephone conversation between your Mr. T. Rebelowski and our Mr. R. R. Viviano, Northeast Nuclear Energy Ccmpany (NNECO) reported a potential significant deficiency in the construction of Millstone Unit No. 3 as required by 10 CFR 50.55(e). The potential significant deficiency involves vendor (Tubeco) supplied radiographs. A random sample of 125 out of a population size of 2,740 welds were reviewed. A total of 54 welds were found to be out of vendor procedure and ASME 111 requirements due to film density violations, the placing of penetrameters and penetrameter identification numbers in the weld, undocumented linear indications, and excessive geometric unsharpness.

The subject reported deficiency resulted from a different review of Tubeco radiographs than that which was previously performed to address NRC violations identified in IE Inspection Report No. 50-423/83-14 (Reference 1). The first two of these concerns (film density violations and the placing of penetrameters in the weld), were the subject of IE Inspection Report No. 50-423/83-14. In both cases, these occurrences were not determined to be technical problems or safety concerns (Reference 3). However, it is the three remaining concerns identified in this review of Tubeco radiographs (undocumented linear indications, excessive geometric unsharpness, and penetrameter identification numbers in the weld) which lead us to report this potential significant deficiency.

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9 Our architect-engineer, Stone & .Webstar Engineering Corporation, is in the process of further reviewing the Tubeco supplied radiographs. We are not able to provide you with a final report at this time. We will provide you with an update

,-. - on this matter by September 20,1984. ,

Very truly yours, NORTHEAST NUCLEAR ENERGY COMPANY f

.W. G. Counsil ~ J(Af Senior Vice President cc: Mr. R. C. DeYoung, D'irector Division of Inspection and Enforcement U.S.' Nuclear Regulatory Commission ,

Phillips Building '

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