ML20030C401
| ML20030C401 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 07/14/1981 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Faulkenberry B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, ANPP-18403-JEC, NUDOCS 8108260070 | |
| Download: ML20030C401 (3) | |
Text
50.55(e) Report 4 nm:<p' h-v 3p+
50-528/529/530'1C81 -,
Oocket Nos.
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Mmamim P. O. B O X 216 66 PHOENIX, ARIZON A 85036 i
July 14, 1981 ANPP-18403-JEC/B
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U. S. Nuclear Regulatory Commission sj (
Region V c' l
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Walnut Creek Plaza - Suite 202
-1 1990 North California Boulevard E
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i Walnut Creek, California 94596 6.
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b-l Attention:
Mr. B. H. Faulkenberry, Chief Reactor Construction and Engineering Support Branch Subj ect:
Final Report A 50.55(e) Potentially Reportable Deficiency Relating to Weld Deficiencies on the Main Control Panels File: 81-019-026 D.4.33.2 Re ference:
(1) Telephone Conversation between J. Eckhardt and B. S. Kaplan on September 16, 1980 (DER 80-26)
(2)
Ir.terim Report, ANPP-16539-BSK/ JAR, dated October 15, 1980 (3)
Interim Report, ANPP-16698-BSK/ JAR, dated November 6, 1980 (4)
Interim Report No. 3, ANPP-17127-BSK/ JAR, dated January 21, 1981 (5)
Interim Report No. 4, ANPP-17437-BSK/ JAR, dated March 10, 1981
Dear Sir:
Attached, is our final written report of the reportable deficiency, under 10CFR50.55(e), referenced above.
Bechtel's source inspector at Comsip, Incorporated, Customline Division, Linden, New Jersey, identified some groove welds on the Main Control Panels which were not full penetration welds.
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8108260070 810714 PDR ADOCK 05000528 5
PDR T)- /dA.
U. S. Nuclear Regulatory Commission Attention:
Mr. B. H. Faulkenberry,, Chief ANPP-18403-JEC/BSK July 14, 1981 Page 2 Subsequent tests and evaluations resulted in a determination that the panels with welding deviations satisfy project seismic requirements and that the as-built configuration is acceptable. Therefore, it is concluded that this would not have constituted a significant safety condition.
Very truly yours,'
G E \\ uth ofm E. E. Van Brunt, Jr.
APS Vice President Nuclear Projects l
ANPP Project Director EEVBJr/JEC:ske Attachment cc:
Victor Stello, Jr., Director U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement Washington, D. C.
20555 A. C. Gehr Snell & Wilmer R. L. Robb D. B. Fasnacht W. E. Ide J. A. Roedel A. C. Rogers J. M. Allen J. A. Brand W. H. Wilson W. G. Bingham W. J. Stubblefield R. L. Patterson R. W. Welcher D. R. Hawkinson Bruce Myerson, Esq.
Arizona Center 1 - Law in the Public Interest 112 North Fifth Avenue Phoenix, Arizona 85003 Ms. Patricia Lee Hourihan 6413 South 26th Street Phoenix, Arizona 85040
,)./-
FINAL REPORT REPORTABLE DEFICIENCY 50.55(e)
ARIZONA PUBLIC SERVICE COMPANY (APS)
PVNGS UNITS NO. 1 AND 2 1.
Description of Deficiency Bechtel's source inspector at Comsip, Incorporated, Customline Division, Linden, New Jersey, identified some groove welds on the Main Control Panels which were not full penetration welds.
Further inspections identified the following conditions:
Less than 100% penetration on various seam welds.
e Samples of seam welds were destructively examined to determine actual weld penetration. Based on this examination, the average penetration is approximately 80%.
Deviations from the specified welding requirements e
for base angle brackets and at the end frame used for bolting panels together. Approximately 25%
to 30% of stitch welds in these areas do not comply with specified requirements for length of weld or spacing interval such as 2" long actual weld where weld is specified to be 3" or stitch welds spaced at 14" intervals wi.ere 12" interval is specified.
e Deficiencies in the k" fillet welds between the edges of 2" and 4" tubing to the panel skin.
Marked-up prints showing actual deviations on the panels were submitted by Comsip. A test panel was assembled and satis-factorily shaker table tested by Comsip. This test panel represented a welding configuration of less quantity and quality than any actual panel and the input motion to the shaker table imparted stresses higher thsn postulated for project seismic conditions. Comsip submitted to Bechtel their Main Control Panel Final Weld
..smic Verification Report for acceptance. This report has been reviewed as acceptable with comments requiring improved correlation of the test panel con-figuration to the as-built panels. Comsip has agreed to resubmit this as a final document resolving the Bechtel comments.
II.
Analysis of Safety Implications As indicated above, this condition is considered to be Not Reportable since the welding deviations did not render the panel unacceptable for seismic purposes.
III.
Corrective Action No corrective action is required.
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