ML20091S345
| ML20091S345 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 06/05/1984 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Bishop T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| ANPP-29668-TDS, DER-84-29, NUDOCS 8406180214 | |
| Download: ML20091S345 (3) | |
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- ,g Arizona Public Service Company June 5,1984 ANPP-29668-TDS/'IRB U. S. Nuclear Regulatory Commission Region V Creekride Oaks Office Park 1450 Maria Lane - Suite 210 Walnut Creek, CA 94596-5368 Attention: Mr. T. W. Bishop, Director Division of Retsident Reactor Projects and Engineering Programs
Subject:
Interim Report - DER 84-29 A 50.55(e) Potentially Reportable Deficiency Relating to Buildup Of Material On Unit 2 Diesel Generator Heat Exchangers.
File: 84-019-026; D.4.33.2
Reference:
Telephone Conversation between P. Narbut and T. Bradish on May 11, 1984
Dear Sir:
The NRC was notified of a potentially reportable deficiency in the referenced telephone 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 Novmeber 16, 1984, at which time a complete report will be submitted.
Very truly yours, Yn tuc3 v
E. E. Van Brunt, Jr.
APS Vice President Nuclear Production ANPP Project Director EEVB/TRB:db Attachment cc: See Page Two 8406180214 840605 PDR ADOCK 05000529 S
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f Mr. T. W. Bishop
~ DER 84-29 Page Two cc:
. Richard DeYoung, Director Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D. C. 20555 2
T. G. Woods, Jr.
D.~B. Karner W. E. Ide i
4-D. B. Fasnacht A. C. Rogers i
L. A..Souza f
B. S. Kaplan D. E. Fowler-
-T. D. Shriver C..N. Russo J. Vorees J. - R.. Bynum J. M. Allen J. A. Brand A. C. Gehr W. J. Stubblefield W. G. Bingham R. L. Patterson R. W. Welcher H. D. Foster D. R. Hawkinson-L. E. Vorderbrneggea
.G. A. Fiore111 S. R. Frost J. Self D. Canady.
Records Center Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 Atlanta, GA 30339
INTERIM REPORT - DER 84-29 POTENTIAL REPOPTABLE DEFICIENCY ARIZONA PUBLIC SFRVICE COMPANY (APS)
PVNGS UNIT 2 I.
Potential Problem'
- 1. All Unit 2 Diesel Generator Heat Exchangers (Train A and Train B) have a significant buildup of unknown material on internal surfaces which restricts water flow.
Fuel oil coolers 2MDGA-E03 and 2MDGB-E03 (NCR SM-4064)
Note: Governor oil cooler 2MDGB-E02 has sufficient buildup to completely block cooling. These coolers are non-coated.
Lube oil coolers 2MDGA-E04 arid 2MDGB-E04 (NCR SM-3938)
Air after-coolers 2MDGA-E01A and 2MDGB-E01B (NCR SM-3938)
Note: These coolers have placite coating.
- 2. Lining failure indications (placite coating) were identified on the following heat exchangers:
Jacket water cooler 2MDGA-E05 has blistering, moisture entrapment between coating, multi-coat delamination, and widespread rust module formation where lining has ruptured.
Sheet delamination from machined surfaces of cooler cover plates was observed.
(NCR SM-3898)
Air af ter-coolere 2MDGA-E01A and 2MDGB-E01B have severe lining failure which includes partial delamination, blistering, and rust. nodule formations. (NCR SM-3898)
, Lube oil cooler 2MDGB-E04 has lining failure indications similar to above. (NCR SM-3938)
Lube oil cooler 2MDGA-E04 has blistering and peeling placite liner. (SWA 6610)
- 3. The stainless steel tubing that supplies water to and from the heat exchangers has a buildup of unknown material which restricts water flow in subsystem 2SP01 and 2SP02.
(NCR SM-4064)
II.
Approach to and Status of Proposed Resolution Bechtel engineering is currently corresponding with Cooper Energy Services on this problem to determine reportability and technical justification for corrective action.
III. Projected Completion of Corrective Action and Submittal of the Final i
Report Evaluation of this condition and submittal of the Final Report is
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Forecast to be completed by November 16, 1984.
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