ML20076C055
| ML20076C055 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 08/01/1983 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Sternberg D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, ANPP-27471-BSK, DER-83-39, NUDOCS 8308220198 | |
| Download: ML20076C055 (3) | |
Text
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U. S. Nuclear Regulatory Commission Region V Creekside Oaks Office Park 1450 Maria Lane - Suite 210 Walnut Creek, CA 94596-5368 Attention: Mr. D. M. Sternberg, Chief Reactor Projects Branch 1
Subject:
Interim Report - DER 83-39 A 50.55(e) Potentially Reportable Deficiency Relating to Rejectable Indications on CE Supplied Unit 1 Reactor Coolant Pump 1A.
File: 83-019-026; D.4.33.2
Reference:
Telephone Conversation between A. D'Angelo and R. Tucker on July 1, 1983.
Dear Sir:
The NRC was notified of a potentially reportable deficiency in the referenced telephore conversation. At that time, it was estimated that a determination of reportability would be made within thirty (30) days.
Due to the extensive investigation and evaluation required, an Interim Report is attached.
It is now expected that this information will be finalized by October 27, 1983, at which time a complete report will be submitted.
Very truly yours, L.
CUL4,_
ALUL.
E. E. Van Brunt, Jr.
APS Vice President, Nuclear Projects Management ANPP Project Director EEVBJr./RQT:rb Enclosure cc: See Page Two hOK05000528 8 830801 D
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e' U. S. Nuclear Regulatory Commission Page Two cc: Richard DeYoung, Director Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D. C. 20555 T. G. Woods, Jr.
G. C. Andognini J. A. Roedel D. B. Fasnacht A. C. Rogers B. S. Kaplan W. E. Ide J. Vorees
' J. R. Bynum P. P. Klute/D. D. Green A. C. Gehr W.'J. Stubblefield W. G. Bingham R. L. Patterson R. W. Welcher R. M. Grant D. R. Hawkinson L. E. Vorderbrueggen G. A. Fiorelli S. R. Frost J. Self Records Center Institute of Nuclear Power Operations 1100 circle 75 Parkway - Suite 1500 Atlanta, Georgia 30339 8/1/83 I
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i' INTERIM REPORT - DER 83-39 POTENTIAL REPORTABLE DEFICIENCY ARIZONA PUBLIC SERVICE COMPANY (APS)
PVNGS UNIT 1 1.-
POTENTIAL PROBLEM On.a recent re-examination and comparison between the Preservice Examination Ultrasonic (UT) data and the construction Radiographs (RT) for the Combustion Engineering (C-E) furnished Reactor Coolant Pump 1A/IMRCEPOIA, two linear indications were-found. The indications exist in the circumferential weld of the pump casing.
One of the RT indications found measures 3 inches long; the second measures 3/4 inches-long. Both exist within a length of 6 inches.
Subsequent examinations have shown that these indications are approximately 3.2 inches in from the outside diameter of.the. casing with no perceptible through wall dimension. The base metal of the casing in this area is 5-5/8 inches thick. The linear indications are acceptable to the ASME Section III UT acceptance criteria but do not meet the'ASME Section III RT acceptance criteria. A Fracture Mechanics Analysis.has been performed by C-E on the casing using conservative parameters. The analysis. assumed:
(1) the indications
.have a through wall dimension of 3/4' inches; and (2) the indication is a sharp crack extending around the entire circumference of the casing.
II.
APPROACH TO AND STATUS OF PROPOSED RESOLUTION Bechtel is continuing to correspond with CE on this matter to determine reportability.
III.. PROJECTED COMPLETION OF CORRECTIVE ACTION AND SUBMITTAL OF THE FINAL REPORT Evaluation of this condition and submittal of the Final Report is i.
forecast to be completed by October 27, 1983.
I L.
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