ML20069M146
| ML20069M146 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 04/19/1983 |
| 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-23545-BSK, DER-82-84, NUDOCS 8305030285 | |
| Download: ML20069M146 (4) | |
Text
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/2'c.h Arizona Public Service Company
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P O. BOX 21666
- PHOENIX ARIZONA 85036 g
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April 19, 1983 Q"
ANPP-23545-BSK/RQT 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:
Final Report - DER 82-84 A 50.55(e) Reportable Condition Relating to Class lE Load Centers in Unit No. 1 Had Internals Damaged By Space Heaters File: 83-019-026; D.4.33.2 Re fere nc e : A) Telephone Conversation between A.D'Angelo and G. Duckworth on January 27, 1983 B) ANPP-22925, dated February 7,1983 (Interim Report)
Dear Sir:
Attached is our final written report of the deficiency re ferenced above, which has been determined to be Not Reportable under the requirements of 10CFR50.55(e).
Very truly
- out,
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E. E. Van Brunt, Jr.
APS Vice President Nuclear Projects Management ANPP Project Director EEVB/RQT:db Enclosure cc:
See Page 2 8305030285 830419 gDRADOCK 05000528 PDR 1N1
1.
M. D. M. Sternberg r
ANPP-23545-RQT/BSK April 19, 1983 Page 2 cc:
Richard DeYoung, Dire ctor.
Office of Inspection and Enforcement 4
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 l
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 i
R. L. Patterson R. W. Welcher
-R. M. Grant D. R. Hawkinson
- L. E. Vorderbrueggen -
G. A. Fiorelli Records Center Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 a
Atlanta, Georgia 30339 A
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FINAL REPORT - DER 82-84 DEFICIENCY EVALUATION 50.55(e)
ARIZONA PUBLIC SERVICE COMPANY.(APS)
PVNGS UNIT l'
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I.
DESCRIPTION OF DEFICIENCY This report was initiated as a result of visual observations in the 480 Volt Load Centers supplied by ITE-Gould which indicated that the design of the space heater s may not have been in compliance with specification requirements since,the following was observed:
4 Equipment Tag No.
Visual Defects i~
lE-PGS-131D Charred paint on back wall and damaged relay in cubicle L31Dl.
IE-PGA-133C Discolored surrounding paint from strip heater which is located just under a control wiring run.
IE-PGA-L31,33, & 35 Visual inspection indicated a concern that heat from the space heaters could impact nearby relays and/or control wiring.
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A subsequent field investigation has determined that the described damage i
is the result of improper voltage (208V AC instead of the specified 120V AC) applied to the heaters during storage in the site warehouse. NCR's l-E-J-492 and E-J-493 and Brown Boveri Electric, Inc., letter dated 5/10/82, (attached) indicate correction of this condition in mid-1980.
Corrective action, including application of proper voltage and replacement of damaged wiring and terminal lugs, was completed in January,1981, per dispositions of NCR's E-J-492 and 493.
l II.
ANALYSIS OF SAFETY IMPLICATIONS 2
The established NCR system provides documentation that the condition has been corrected and that no deficiency in the safety-related electrical systems currently exists. The cosmetic paint defects, resulting from a condition resolved two years ago, do not constitute a reportable condition as defined by 10CFR50.55(e) since'the identified isolated storage problem does not (i) constitute a significant breakdown in the QA program, (ii) does not represent a significant deficiency.in final design, (iii) does not represent a significant deficiency in construction or significant damage requiring extensive repair, and (iv) does not-represent a significant deviation from performance specifications.
III.
CORRECTIVE ACTION Continued surveillance activity of electrical equipment still in storage assures that the space heaters are being supplied with the correct voltage.
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'I 0 Arizona Public Service Co.
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' c/o Bechtel Power Corporation ii P. O. Box 49 Palo Verde, Arizona 85'343
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Attention:
Mr. Bob Anderson
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Electrical Section
'"n Subj ect:
Heater Wire Discoloration s
0-Gentlemen:
- f-I have discussed this problem w th our Quality Control'section.
i They advise as follows:
"This letter is in response to your questions about the -
space heater wire terminals being overheated resulting in the pre-insulated wire terminal insulation becoming 1
discolored, and in some cases control wire dis ~ coloration.
This is a common problem at jobsites wherein personnel connect the wrong temporary power to the heaters.
It generally occurs in the storage or warehouse area where personnel are advised to energize'the space heaters, and they do so without using the drawing.
- Normally, i
they apply 208 volt power when they should have used
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120 volt.
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In fact, we have a Non-Conformance Report from the Palo-
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2 Verde Nuclear Gen'eratitig Station (E-J 492) which in-5 dicates that they-did this.
We have observed the same I
mistake at other.j obsites.
warehouse and then~ aft 6r.jhe damage is done in the i-Generally what happens,is the equipment is installed and and everyone wonders why.7' discoloration is observed L
the correct power applie'd
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j Very truly yours, h
r BROWN BOVERI ELE,CTRIC, INC.
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j; A. E. J.nsdn Distri Manager AEJ/rfw Encl.
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6150 N.16th St., Suite A 221. P.O. Bos 32681. Phoenis. AZ 85064. (602) 264 7720
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