ML19225B056
| ML19225B056 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 05/17/1979 |
| From: | Woolever E DUQUESNE LIGHT CO. |
| To: | Robert Carlson NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML19225A931 | List: |
| References | |
| NUDOCS 7907230452 | |
| Download: ML19225B056 (3) | |
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'Af (412) 471-4300 435 Sixth Avenue Pittsburgh, Per*nsylvania 15219 May 17, 1979 United States Nuclear Regu.'.mtory Commission 7egion I 631 Park Avenue King of Prussia, Pennsylvania 19406 ATTENTION: Mr. Robert T. Carlson, Chief Facility Construction and Engineering Support ranch
SUBJECT:
Beaver Valley Power Station Unit No. 2 Docket No. 50-412 USNRC IE Inspection Report No. 50-412/79-03 Gentlemen:
This is in response to the item of infraction cited in Inspection Report No. 50-412/79-03 and listed in Appendix A (Notice of Violation) attached to your letter to Mr. E. J. Woolever dated April 17, 1979.
NRC VIOLATION 10CFR 50, Appendix B, Criterion IX, states, in part:
" Measures shall be established to assure that . . .
welding (is) controlled and accomplished . . . in accordance with applicable codes . . .
The Beaver Valley Power Station PSAR, Chapter 17, Quality Assurance, paragraph 17.1.9B, states in part: " Requirements of special processes are established in Erection and Procurement Specifications."
The Specification for Field Fabrication and Erection of Piping ASME Section ', 2BVS-920, Addendum No. 1, states, in part: ". . . the installer for all ASME Section III piping, is responsible for code com-pliance . . . in accordance with ASME Section III -
1971."
The ASME Code,Section III, 1971 edition, for class 3 piping systems, paragraph ND-4110, directs that:
". . . components shall be. . . installed in accordance with the rules of NC-4000." NC-4110 also directs that: ". . . components shall be. . . installed in 445 344 7907230 Of.-7 / s
Mr. Robert T. Carlson, Chief Page Two May 17, 1979 accordance with the rules of NB-4000. . .'
Paragraph NB-4425 states, in part: "When components of different diameters are welded together. . . the slope of the transition shall ba such that the length to offset ratio shall ne.. be less than 3 to 1. . ."
Contrary to the above, on Februar7 1, 1979, the weluing inspector accepted a nuclear class 3 pipe-to-valve weld joint, as trridenced by the ASME Weld Data Sheet 2 CHS-Ols -F G 2, with a diameter transition slope of approximately 3 to 2.
RESPONSE
Resulting from the infraction reported above, Nonconfor"ance and Disposition No. 6142 was initiated on Weld Joints CHS-010-F02 and CHS-010-F03, the latter also failed to conform to the requirement described.
A detailed inspection of completed welds with similar weld configuration revealed no o'her c
deviations from the referenced code.
A review of the applicable Inspection Plan 7.2.2, 9/5/78, indicated an omission of the applicable attribute. As a temporary measure, Memo DLC/SQC-#0530A dated 3/13/79 with descriptive sketch, was issued instructing the Quality Control Supe.rvisor to incorporate the attribute in future Ir.spectior.s. The Inspection Plan 7.2.2 has now been formally revised 4/9/79 with Attribute Number ME-MS-009 Paragraph 4.4.3 and Attachment 3.4 to fully describe the attribute.
In addition, the Training Course TCO VII NOP Video Tape has been modified to include instruction for this attribute and Quality Control Inspectors certified to inspect to Inspection Plan 7.2.2 have been retrained to this attribute and the method to be applied and are currently inspecting to this attribute.
445 345
Mr. Robert T. Carlson, Chief Page Three May 17, 1979 The condition of the 2 welds in questions give a weld transition taper of 2 to 1 rather than tFe 3 to 1 taper required by the applicable code the condition will be corrected to conform t.'
the applicable code. However, the original conditior of the welds, although in violation, is not considered to have a safety i,alication.
DUQUESNE LIGHT COMPANY By -
Ei/J. Woolever ~~
Vice President COPIES TO: Dr. E . Volgenau (15)
Mr. W. G. Mcdonald (1) 445 346