ML20040G766
| ML20040G766 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 01/28/1982 |
| From: | Robert E. Uhrig FLORIDA POWER & LIGHT CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| REF-PT21-82 10CFR-050.55E, 10CFR-50.55E, L-82-34, NUDOCS 8202160445 | |
| Download: ML20040G766 (3) | |
Text
E 4
P.O. 8';X 529100 MI AMI, F L 33142 s=p@
FLORIDA POWER & LIGHT OMPANY 32Odn~ua'ty28U198h L-82-34 Mr. James P. O'Reilly, Regional Administrator, Region II U.S. Nuclear Regulatory Commission 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303
Dear Mr. O'Reilly:
Re:
R II : JP0 50 - 389/82-001 GENERAL ELECTRIC "HFA" RELAYS FPL has submitted a report to the NRC inaccordance with 10CFR 21 identifying the potential problem with GE "HFA" relays coils for their operating plants St. Lucie Unit 1 and Turkey Point Units 3 and 4.
An evaluation has been completed for St. Lucie Unit 2 under 10CFR50.55 (e) requirements. A final report is attached for your review.
Very truly yours, n
r h' Q[sf 6 ert E. Uhrig s
Vice President x
Advanced Systems and Technology N
i-r.
p.{, ' ' ;.
REU/RAK/mm j
- ~
'<,4,n
! 'l 3
'O Attachments
/
cc: Director of Inspection and Enforcemen+
Q'j<', (,j' U.S. Nuclear Regulatory Commission a
Washington, D.C.
20555 (w/ attachment)
[II[h!A1. COPY b
fJ 8202160445 820128 PDR ADOCK 05000389 f
S PDR PEOPLE.. SERVING PEOP
[%
6 I. Summary Possible problem was identified by General Electric (GE) with the bleck Lexan coil spools used in some of their type HFA relays.
This problem was attributed to an improper mixing of black Lexan by the vendor which resulted in cracked black Lexan coil spools in the rolcys.
GE also identified possible problems with the relays that utilized clear Lexan spools.
This problem was reported to the NRC by GE.
FPL has submitted a report to the NRC inaccordance with 10CFR 21 identifying the existance of these relays in safety related elec-trical cabinets for the operating nuclear plants St Lucie Unit 1 cnd Turkey Points Units 3 and 4.
A detailed review has been com-pleted for St Lucie Unit 2 and this final report is being submitted to advise the NRC of the description of this deficiency and cor-rective action taken for St Lucie Unit 2.
II Description GE has advised the date codes of their type HFA relays which could possibly be affected by this problem.
A detailed investigation has determined that three defective type relays are utilized in St Lucie Unit 2.
All three relays are mounted in RTG board 206 supplied by Reliance Electric Company.
These three HFA relays are on three component cooling water pumps (2A, 2B, 2C) starting circuits and perform the following functions.
- maintain memory that pumps are started automatically by SIAS or. manually by the control switch.
- upon loss of offsite power restart the pumps on the emergency power if pumps were started cutomatically.
- permits to stop the pump manually after SIAS start.
III Corrective Action The defective installations were identified at the site and are being replaced with qualified relays provided by the vendor GE according to their recommended repair procedure.
A list of affected tag numbers is also maintained.
IV Safety Implications The affected components are the three component cooling water pumps which are safety related.
The defective relays were in the starting circuit of these three pumps.
This is considered os a deviation from performance specification and it has been concluded that the safety of operation of the nuclear power plant could have been adversely affected sometime throughout the expected lifetime of the plant, if the relays were to have remained uncorrected.
This item is considered reportable.
3 o
V Conclusion
~
Corrective action as indicated in Section III of this report is being undertaken.
This closes out this item for St. Lucie Unit 2 as regards to 10 CFR50.55 (e) re-quirements.
I
'l