ML20082Q772
| ML20082Q772 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 11/28/1983 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Bishop T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| REF-PT21-83 10CFR-050.55E, 10CFR-50.55E, ANPP-28295-KCP, DER-82-44, NUDOCS 8312120334 | |
| Download: ML20082Q772 (4) | |
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$D -5 a4 Arizona Public Service Company y
P O. BOX 21666
- PHOENIX, ARI2ONA 85036 E3 [iC -3 EI 2 SU 6 30 November 28, 1983 ANPP-28295-KCP/BSXq;[ g'tu(
II. S. Nuclear Regulatory Commission Region V Creekside Oaks Office Park 1450 Maria Lane - Suite 210 Walnut Creek, CA 94596-5368 Attention: Mr. T. W. Bishop, Director Division of Resident Reactor Projects and Engineering Programs
Subject:
Final Report, Revision 2 - DER 82-44 A 50.55(e) Report Relating to Could-Brown Boveri Load Centers Have Improperly Crimped AMP Termination Lugo File: 83-029-026; D.4.33.2
Reference:
A) Telephone Conversation between C. Hernandez and G. Duckworth on August 13, 1982 B) ANPP-21798 dated September 9, 1982 (Interim Report)
C) ANPP-22460 dated December 7, 1982 (Final Report)
D) ANPP-23441 dated April 6,1983 (Final Report, Rev. 1)
Dear Sir:
Enclosed is revision two of the subject Deficiency Evaluation Report under the requirements of 10CFR50.55(e). This revision provides additional clarification of equipment to be inspected for compliance with criap requirements.
Very truly your, ct_w
%tt E. E. Van Brunt, Jr.
APS Vice President, Nuclear Projects ANPP Project Director EEVB/KCP: sis Attachment cc: See Attached Page Two 8312120334 831128 PDR ADOCK 05000528 S
PDR ll s 1 637
1
.s Mr. T. W. Bishop DER 82-78 l
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 D. D. Green P. P. Klute 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 D. Canady Records Center Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 Atlanta, CA 30339
r' FINAL REPORT, REVISION 2 - DER 82-44 DEFICIENCY EVALUATION 50.55(e)
ARIZONA PUBLIC SERVICE COMPANY (APS)
PVNGS UNITS 1, 2 & 3 I.
DESCRIPTION OF DEFICIENCY During QC surveillance of the class IE 480V load centers supplied by Brown Boveri Electric Company (BBEI), also referred to as Gould-Brown Boveri or Gould-I.T.E. in previous Interim Report, several conductors were found partially pulled from the crimped area of AMP type lug connectors.
BBEI provided criteria for corrective action for determining acceptable termination crimps in 480V load centers furnished under PVNGS specifi-cation 13-EM-017. A followup random inspection performed by Bechtel construction in Unit 3 load centers (9 cubicles noted below) revealed that not all lug terminations were in compliance; however, no open circuits were apparent.
In some cases, conductors were less than flush with the crimp connector barrel, and the ends of the wires were not visible under high intensity light and magnification.
L/C CUBICLE TERM. POINT WIRE I.D.
3E-PGA-L31B2 7
EA3 3E-PGA-L31B2 12 EA8 3E-PGA-L31E4 7
ELll 3E-PGA-L33B3 7
EA31 3E-PGA-L33C3 5
EA23 3E-PGA-L33C3 4
EA28 3E-PGB-L32B4 2
PHTB1 3E-PGB-L32D4 7
EA31 2
3E-PGB-L34C3 5
EA23 3E-PGB-L34C4 1
EK2 3E-PGB-L34C4 2
AH7 3E-PGB-L32D3 2
AB7 II.
ANALYSIS OF SAFETY IMPLICATIONS This condition is evaluated as Reportable. Connections with reduced contact area in termination lug barrels do not adequately assure the If degree of electrical continuity required for reliable operations.
inadequately crimped lugs were left uncorrected, potential open circuits could jeopardize safety related functions of these load centers.
7 FINAL REPORT, REVISION 2 - DER 82-44' Page Two.
1 III. CORRECTIVE ACTION All Class 1E terminations, and the non-Class lE terminations associated with the non-Class 1E Auxiliary Feedwater Pumps which utilize AMP crimp-type lugs in load centers (Units 1, 2 and 3) supplied by BBEI under specification 13-EM-017, shall be inspected for compliance to E3EI's visual criteria for terminations.
The terminal lug connection to the conductor is acceptable if the conductor is visible and underneath the crimp connection (i.e.,
appror.imately within 1/16" from the face of the barrel).
In addition, 1
the conductor extending beyond the barrel of the connector does not pose a problem unless it interferes with the termination screw, in which case it should be cut lack. The terminal connection shall exhibit the use of the correct crimping lug.
Any connectors which do not meet this requirement shall be removed and have a new AMP connector installed in accordance with Bechtel's termination practices established in construction specification 13-EM-306 (including proper usage and traceabilty of crimping tools).
This condition will be corrected via the following Design Change-Packages:
10E-PC-016 20E-PG-016 30E-PG-016 In addition to reportability under 10CFR50.55(e), PVNGS Project considers the deficiency to be Reportable by the Supplier under the requirements of 10CFR Part 21.
Deficiency Evaluation Report 82-44 addresses the reporttug requirements specified under 10CFR 21.21(b) (3),
with the exception of sub-part (vi), which requires the number and location'(customers and/or facilities) of other possibly defective equipment. A copy of this report will be sent to BBEI requesting their review for reporting under 10CFR Part 21, including number and location of all components supplied.
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