ML20084F924
| ML20084F924 | |
| Person / Time | |
|---|---|
| Site: | Perry  |
| Issue date: | 04/26/1984 |
| From: | Edelman M CLEVELAND ELECTRIC ILLUMINATING CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| REF-PT21-84-370-000 IEB-84-02, IEB-84-2, PT21-84-370, PT21-84-370-000, RDC-62(82), NUDOCS 8405040363 | |
| Download: ML20084F924 (2) | |
Text
3 (A "ljjp P,
C ;/
l 4 Cl C ;v s ?!Q ' [ l l} f s 3til+1ATlM Q P n *J i,S O g I.; y 7
i
.. m u L%
u,.
- _ t, L
i
% v 4 ma h ta u
P.o. Box 5000 - CLEVELAND, OHlo 44101 - TELEPHONE (216) 622-9800 - ILLUMINATING BLOG. - 55 PUBLICSQUARE Serving The Best Location in the Nation MURRAY R. EDELMAN April 26, 1984 VICE PRESIDENT NUCLEAR Mr. James G. Keppler Regional Administrator, Region III Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137 RE: Perry Nuclear Power Plant Docket Nos. 50-440; 50-441 Calibration of HFA Relays Supplied by General Electric
[RDC 62(82)]
Dear Mr. Keppler:
This letter serves as the final report pursuant to 10CFR50.55(e) on the potential significant deficiency concerning HFA relays supplied to Perry Nuclear Power Plant by the General Electric Company (GE) for use in Unit 1.
Mr. E. Riley of The Cleveland Electric Illuminating Company (CEI) notified Mr. P. Pelke of your office on August 18, 1982, that this potential deficiency was being evaluated by CEI.
Interim reports were issued on this subject September 17, 1982, November 5, 1982, and October 31, 1983.
This letter contains a description of the deficiency, an analysis of safety implications, and the corrective action taken.
Description of Deficiency Some HFA relays supplied by General Electric Company which were converted from normally open to noinally closed by GE shop and/or field personnel may have incorrect " wipe settings". The contacts are self-aligning, but the contact wipe can be out of adjustment. This condition was reported to the NRC by GE under 10CFR21 in a letter dated July 27, 1982.
Analysis of Safety Implications HFA relays with less than a minimum wipe setting could fail to actuate engineered safety systems during a nefsmic event. The failure to actuate safety systems could result in plant technical specifications being exceeded during some postulated seismic events.
l f 5,21 8405040363 840426 PDR ADOCK 05000440 MAY 1 1984 S
PDR g
Mr. Jrmes G. Keppler April 26, 1984 Corrective Action Taken In response to IE Bulletin 84-02, all Unit 1 HFA relay magnetic coil assemblies are being replaced with Century series coil assemblies. - This change, performed according to GE Field Disposition Instruction (FDI) WNNV, requires the contact wipe setting to be adjusted following replacement of the coil. This adjustment, performed according to the instructions provided with FDI WNQA, will correct any occurrences of less than minimum wipe settings for the ' Unit i relays.
All but two of the magnetic coils in the Unit I relays have been replaced and the wipe setting adjusted. Century coils.for the remaining two relays vere ordered on Field Deviation Disposition Request KL1-803 and are expected to be installed and the wipe setting adjusted by June 1,1984. Upon completion of these activities, site Nonconformance Report PQS 0012 dealing with the potential incorrect wipe settings will be closed.
Please call if there are any additional questions.
Sincerely, l
-- f g N b_,-
Murray R. Edelman Vice President Nuclear Group MRE:pab cc:
Mr. M. L. Gildner' l
USNRC, Site Of fice Director Office of Inspection and Enforcement ~
U.S. Nuclear Regulatory Commission Washington, D.C.
20555-U.S. Nuclear Regulatory Combission c/o Document Management Branch Washington, D.C.
20555 Records Center, SEE-IN Institute of Nuclear Power Operations 1100 circle 75 Parkway, Suite 1500 Atlanta, Georgia 30339 L
-