ML19290B760
| ML19290B760 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 10/17/1979 |
| From: | Robert Carlson NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Woolever E DUQUESNE LIGHT CO. |
| References | |
| NUDOCS 7912140042 | |
| Download: ML19290B760 (1) | |
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.0CT 171973 Docket No. 50-412 Duquesne Light Company ATTN: Mr. E. J. Woolever Vice President 435 Sixth Avenue Pittsburgh, Pennsylvania 15219 Gentlemen:
Subject:
Significant Deficiency Concerning Power Piping Corp. Safety Related Piping (Your letter of October 9,1979)
Thank you for your letter, referenced above, which forwarded a final report pursuant to 10 CFR 50.55(e) regarding the subject matter.
Your report will be reviewed and evaluated, and should we require additional information concerning this matter, we will contact you.
Your cooperation with us is appreciated.
Sincerely,
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R. T. Carlson, Chief Reactor Construction and Engineering Support Branch cc:
R. J. Washabaugh, Quality Assurance Manager 1574 252 7912140 04-7_
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$f DuquesneUJ1t 435 Sixth Avenue Pittsburgh, Pennsylvania October 9, 1979 15219 United States Nuclear Regulatory Commission Region I 631 Park Avenue King of Prussia, Pennsylvania 19406 ATTENTION:
MR. BOYCE H. GRIER, DIRECTOR
SUBJECT:
Beaver Valley Power Station - Unit No. 2 Docket No. 50-412 Significant Deficiency 79-02 Final Report Concerning Deficiency with Power Piping Corp. Safety Related Piping Gentlemen:
On September 14, 1979, R.
E. Martin, Duquesne Light Company Nuclear Engineer, notified your offices of a possible reportable deficiency as defined by 10CFR50.55e(l) (i) and (iv) in the shop welding of some safety-related piping for Beaver Valley Power Station - Unit No. 2.
Attached herewith is the final report on this subject.
DUQUESNE LIGHT COMPANY B y -"
Ef. J. Woolever Vice President ATTACHMENT COPIES TO:
Dr. V. Stello (15)
Mr. W. G. Mcdonald (1) 1574 253 79to t2 0 207 94'PE
Mr. Boyce H. Grier, Director Page Two October 9, 1979 NRT/plm bec:
Messrs:
W. H. Bohlke H. A. Van Wassen H. W. Burkhart J. J. Carey R. Cartrette - S&W (Boston)
C. N. Dunn R. E. Martin G. W. Moore F. Salmon R. J. Washabaugh R. J. Swiderski J. A. Werling E. J. Woolever Re ferences :
2DLS 0396, dated 10/5/79 2DLS-9316, dated 9/14/79 SDR 79-02, dated 9/14/79 1574 254
b FINAL REPORT ON WELDER QUALIFICATION DEFICIENCY AT BEAVER VALLEY POWER STATION - UNIT NO. 2 I.
Description of Deficiencg Pipe fabrications supplied by Power Piping Company (PPCo) for use in Beaver Valley Power Station - Unit No. 2 (BVPS-2) were fabricated by personnel whose welding qualifications did not comply with ASME Boiler and Pressure Vessel Code, Sections III and IX, as required by the procurement specification governing this work.
This situation developed as a result of PPCo. 's failure to comply with the requirements of the ASME Code for welder performance qualification.
Specifically, the problem is related to welder qualifications for attached bosses 2 inch and smaller nominal pipe size to larger diameter pipe, butt welding of small diameter pipe, welding machine operator quali-fication, and multi-process welder qualification.
As a direct result of this nonconformance, welders performed production welding operations on 167 piping fabrications before their qualifications to perform those operations were achieved and/or documented.
The nonconformance was discovered by members of Duquestre Light Company Vendor Surveillance Group (DLC-VSG) while perfarming shop inspections as required by the procurement specifications.
Nonconformance and Disposition (N&D) reports were ger.arated and forwarded to Stone & Webster Engineering Corpcration (SWE C),
agents for Duquesne Light Company (DLC) performing the engin-eering and construction management for BVPS-2.
SWEC completed their evaluation of the above nonconformance on September 13, 1979, and determined that a reportable defi-ciency under 10CFR50.55 (e) existed at this time.
SWEC informed DLC on September 14, 1979, that the reportable deficiency exists.
Mr. R. Martin of DLC informed Mr. McGaughy of the NRC InJpection and Enforcement Division, Region I, on September 14, 1979, nf this reportable deficiency.
II.
Analysis of Safety Implications The affected 167 piping fabrications constitute subassemblies of piping systems required for safe shutdown of or accident mitigation for BVPS-2.
Failure of weld joints in these systems could impair the ability of these systems to perform their safety functions.
1574 255 III.
Corrective Action Corrective action has been/is being performed as follows:
7WO/2 0 2' 24 ovN
1.
Unqualified welders were identified and prevented from further welding pending proper qualification.
2.
A comprehensive review of the applicable documentation was completed which resulted in the identification of 167 affected fabrications.
3.
Of the 167 affected fabrications, 46 are located at PPCo.'s Donora facility, and the remaining are located at the BVPS-2 site.
These fabrications were placed on a quality control reject status.
4.
The following disposition will be applied to the welds with deficient welder qualifications:
A.
The welders / welding operators will be qualified by radiographically examining production welds in accordance with ASME IX requirements, or B.
The welds will be qualified by radiographically examining the welds to the acceptance criteria of ASME III, or C.
The welds will be ground out and rewelded by properly qualified welders or welding operators.
All radiographed welds found unacceptable by acceptance criteria of ASME III, Article NB-5000, will be reworked.
5.
PPCo. is responsible for completing the above corrective action and estimates that the corrective action will be complete by January 17, 1980.
IV.
Supplemental Information The above-described deficiency was reported by PPCo. to the NRC as a failure to comply under 10CFR21.
The failure to comply was initially reported to Mr. R. McCoy of the NRC Inspection and Enforcement Division Region I, by Mr.
H.
Ray Good, Director, Corporate Quality Assurance for PPCo., by telephone on September 14, 1979.
A written report was trans-mitted to the District Director, U.S. Nuclear Regulatory Commission, Region I by Mr. W. R. Patterson, Executive Vice President, PPCo., on September 19, 1979.
In this report, PPCo. indicated that the failure to comply affected only BVPS-2.
1574 256