ML20101Q382
| ML20101Q382 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 12/18/1984 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Kirsch D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| ANPP-31524-TDS, DER-84-28, NUDOCS 8501070593 | |
| Download: ML20101Q382 (3) | |
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, tccr,'En Arizona Nuclear Power Project 9n Ec 20 my,c P.O. BOX 52034
- PHOENIX, ARIZONA 85072-2034 f.EM i December 18, 1984 ANPP-31524-TDS/TRB U. S. Nuclear Regulatory Commission Region V 1450 Maria Lane - Suite 210 Walnut Creek, CA 94596-5368 Attention: Mr. D. F. Kirsch, Acting Director Division of Resident Reactor Projects and Engineering Programs
Subject:
Interim Report - DER 84-28 A 50.55(e)
Potentially Reportable Deficiency Relating To Diesel Generator Fuel Lines In Unit 3 File: 84-019-026; D.4.33.2
Reference:
(A) Telephone conversation between P. Narbut and T. Bradish on May 11, 1984 (B) ANPP-29696, dated June 7, 1984 (Interim Report)
(C) ANPP-30447, dated September 6, 1984 (Time Extension)
(D) ANPP-30870, dated October 17, 1984 (Time Extension)
Twar Sir:
The NRC was notified of a potentially reportable deficiency in Reference (A), an Interim Report was transmitted by Reference (B) and Time Extensions were requested by Reference (C) and (D).
At that time, it was estimated that a Final Report would be available by December 15, 1984.
Due to the extensive investigation and evaluation required, an Interim Report is attached.
It is now expected that this information will be finalized by January 25, 1985, at which time a complete report will be submitted.
Very truly yours, CLLt A LLL h1 3 84121s E. E. Van Brunt, Jr.
S 05000530 APS Vice President PDR Nuclear Production ANPP Project Director EEVBJr./TRB: dim cc: See Page Two s\\
Nd?
Mr.. D. F. Kirsch DER 84-28' Page Two
- cc:
Richard DeYoung, Director-Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D. C.
20555 T. G. Woods, Jr.
D. B. Karner W. E. Ide D.
B.' Fasnacht A. C. Rogers L. A. Souza D. E. Fowler T. D. Shriver C. N. Russo B. S. Kaplan J. R. Bynum
, J. M. Allen D. Canady A. C.~Gehr W. J. Stubblefield W. G. Bingham R. L. Patterson R. W. Welcher H. D. Foster D. R. Hawkinson R. P. Zimmerman M. L. Clyde M. Matt T. J. Bloom Records Center Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 Atlanta, GA 30339 1
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INTERIM REPORT - DER 84-28 POTENTIAL REPORTABLE DEFICIENCY ARIZONA PUBLIC SERVICE COMPANY (APS)
PVNGS UNIT 3 I..
Potential Problem Two diesel fuel. lines, 3-DF-024 and 3-DF-037,. which connect the Diesel Fuel Storage Tank (Train B) to the Diesel Generator Day tank are touching ' the penetration sleeve through which they pass.
The lines are underground prior to passing through the penetration into l
the valve vault, where they join together.
Condition of piping is.
indeterminate (i.e.,
cold spring, deformed due to backfilling, or installed incorrectly). This condition was reported in NCR PY-8274.
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.II.
Approach To and Status Of Proposed Resolution Bechtel Engineering is evaluating' the condition described above using'the associated possible causes.
The case which results in.the most. detrimental effect on the piping system (both pipe stresses and system function) ' was _ to assume the ~ pipe deformed during the backfilling process.
The piping in the valve vault is -not affected since it is not yet attached to the subject lines.
The subject lines = were analyzed for the maximum deflection determined from the i
. data provided in NCR ~ PY-8274.
Preliminary. engineering calculations show the additional stresses induced result in levels below the maximum allowables.
l This condition causes the piping to slope in the wrong direction.
l The diesel fuel lines are designed to drain from the Diesel i
Generator Day Tank to the Diesel. Fuel Storage Tank in case of fuel l
contamination. The reverse slope of the pipe results in a low point j
pocket.
j Bechtel Engineering has certified that this condition is isolated to Unit 3.
III. Projected Completion of Corrective Action and Submittal of the Final Report The complete evaluation and final report are forecast to be completed by January 25, 1985.
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