ML17249A521
| ML17249A521 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 12/21/1979 |
| From: | White L ROCHESTER GAS & ELECTRIC CORP. |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| IEB-79-25, NUDOCS 8001300168 | |
| Download: ML17249A521 (16) | |
Text
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ROCHESTER GAS AND ELECTRIC CORPORATION o
89 EAST AVENUE, ROCHESTER, N.Y.,14649 LEON D~ WHITE. JR.
VICE IIRCSIOCNT TCLCPHONK ARcA cooc 710 546.2700 December 21, 1979 Mr. Boyce H. Grier, Director U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region I 631 Park Avenue King of Prussia, Pennsylvania 19406 Subfect:
IE Bulletin No. 79-25, Failures of Westinghouse BFD Relays in Safety-related Systems R. E. Ginna Nuclear Power Plant, Unit 4:1 Docket No. 50-244
Dear Mr. Grier:
In response to NRC IE Bulletin-No. 79-25 an inspection has been completed at Ginna Station to determine if the following Westinghouse BFD/NBFD relays are used in safety-related systems.
a.
Type BFD, Style 46E7352 or 766A235, Coil Style 503C428G21.
b.
Type BFD, Style 5069A95, Coil Style 1259C71G19.
c.
Type BFD, Style 5072A49, Coil Style 1271CSOGOl.
The results of this inspection have found the above mentioned relay styles and/or coil styles in use in the Reactor Protection System and in the Circulating Water Pump Trip Logic Circuitry.
These relays are tested by qualified personnel using approved procedures during each refueling outage.
These procedures have existed for six (6) years for the reactor protection
- system, and five (5) years for circulating water pump logic system, and have encountered none of the problems outlined in the NRC IE Bulletin 79-25 and the Westinghouse Technical Bulletins on BFD Relays.
Regarding the relay style for which the possibility for an overtravel deficiency, was identified (Westinghouse type BFD style 5072A49 relay with coil style 1271CSOG01), in May 1977 the 28 reactor trip logic relays were replaced with this type, per Westinghouse recommendation.
Allof these new 28 relays, plus one other relay of this style utilized in the Reactor Protection System, and the 8 spare relays in QA stock were tested on Decem-ber', 1979, for sufficient overtravel by qualified personnel using an approved procedure as recommended in the Westinghouse Technical Bulletin on this relay style.
The results of this test found 5 installed and 1 spare relay not 0001800 (g'.:
R i i
4 ROCMESTER GAS AND ELECTRIC CORP.
DATE December 21, 1979 Mr. Boyce H. Grier, Director SHEET NO.
2 having the Westinghouse established 0.020 inch as the minimum acceptable overtravel.
These installed relays were replaced with qualified spares even though they would have performed their intended function.
Based on previous test results the existing test frequency is consid-ered adequate for the above mentioned relays, and there is no need for a replacement schedule at this time.
l' Attached is a table which identifies the applicable relays to its tag number, safety-related system involved, specific function, relay style, coil style, test procedure and date last tested.
Very truly yours, L. D. Whi e, Jr.
Att.
xc: U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement Div'ision of Reactor Operations Inspection Washington, D. C.
20555
LISTING OF RELAYS THAT ARE APPLICABLE TO IE BULLETIN 79-25 Page 1
RELAY TAG NO.
RT-RT-2 SYSZEH I
RPS-TRAIN A
- REACIOR TRIP RELA I
RELAY STYLE NO.
'072A 9
COIL STYIZ NO.
127 C50G01 TESZING PROCEDURE M-51.5 2 09/79 RT-5 RT-7 RT-8 RT-10 RT-11 RT-12 RT-13 RT-1 4 RT-1 RT-2 RPS-TRAIN "B" '
If I
If I
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LISTING OF RELAYS THAT ARE APPLICABLE TO IE BULLETIN 79-25 Page 2
RELAY TAG NO.
RT-RT-5 SYSTEM RPS-TRAIN B
I REIAY i
COIL STYLE NO. "
STYLE NO.
REACIOR TRIP RE+
5 7
9 1
7 C OC TESTING PROCEDURE M-
.5 BATE IAST T1HTED 1
979 RT-10 RT-11 RT-12 RT-13 RT-14 P7-1 P7-2 P7-3 P7-4 P7-1 P7-2 RPS TRAIN "A"'-7 PERMISSIVE RPS TRAIN "B"
'4E3742 503C42892 1 'T-32 03/06/79
LISTING OF REIAYS THAT ARE APPLICABLE TO IE BULU'.TIN 79-25 Page 3
RELAY TAG NO.
SYSZEH I
RELAY STYLE NO. 'OIL STYLE NO.
TESTING PROCEDURE DATE LAST TESTED P7-3 P7-4 P8-1 P8-2 P8-1 P8-2 RPS-TRAIN B
I ll t
P RPS-TIVQN "A":
RPS-'QVQN "B"
'-7 PERMISSIVE P-8 PERMISSIVE 503 8
I 03/06 79 P9-1 P9-2 P9-1 P9-2 RPS-TRAIN "A"'-9 PERKSSIVE RPS-TRAIN "B"'1 1
P10-1 P10-2 P10-1 P10-2 RPS-TRAIN "A"
'PS-TRAIN "B"
I P-10 PERMISSIVE 17 18 17 I
RPS-TRAIN "A"'NTERMEDIATE RANG '
BUKK RPS-TRAIN "B" '
LISTING OF REIAYS THAT ARE APPLICABLE IO IE*BULU'.TIN79-25 Page 4 RELAY TAG NO.
RELAY STYLE NO. 'OIL
'ESTING STYLE NO. 'ROCEDURE 18 15 16 15 16 21 22 21 22 RPS-TRAIN B
RPS-T1QIN "A"
'PS-TRAIN "B"
'PS-TRAIN "A"i I
II RPS-TRAIN "B" '
INTERMEDIATE BIDCK PCMER RANGE BIDCK
'OURCE RANGE B E37
~
5 3 52S/RCP1BX "
'2S/RCP1AX
'2S/RCP1 BX SIAMlX SIAM2X SIAMlX SIAM2X RPS-TRAIN "B"
'PS-TRAIN "A" '
RPS-TRAIN "B"
'2S/RCP1AX
'PS-TRAIN "A "A" RCP BREAKS "B" RCP BREAKER
- . "A" RCP BREAKER
! "B" RCP BREAKER I
SAH'.TY INJECTION TRAIN "A" SAR TY INJECTION TRAIN "B" t
SAFl".TY INJECTION
'RAIN "A" SABA'Y INJECTION 5072A49 44E3742 II I
1271C50G01 503C428Q21 II
'-51.5 PZ-32 12/09/79 03/06/79
LISTING OF RELAYS THAT ARE APPLICABIZ TO IE BULLETIN 79-25 Page 5
RELAY TAG NO.
MT- -1X I
MT-1-2X RPS-TRAIN
'A'PS-TRMZ"A"
'UNCTION 1
'ANUALTRIP REIAY STYIZ NO.
'37 2
1 GOIL-STYIZ NO.
5 3 8G21 TESTING PROCEDURE 03 0 79 MT-2-1X MT-2-2X
ÃT-1-1X MT-1-2X MT-2-1X MT-2-2X I
PC-484AX PC-484BX IIBII~-
RPS-TRAIN "A"
'PS-TRAIN "B"
'IGH CONDENSER PRESS-P9 II I
II I
SHElA CIRC PQP LOGIC I
CIRC WATER PUMP
- TRIP CIRCUIT II 766A235 1259C71G19 PT-14
'03/26/79 SHE3A SHEA SHEB SHWlA CIRC PtMP IDGIC II
LISTING OF RELAYS THAT ARE APPLICABLE TO IE BULLl.l'IN 79-25 Page 6
RELAY TAG NO.
SYSTEM I
REIAY STYLE NO.
COIL STYLE NO.
TESTDlG i
DATE IAST PROCEDURE
~
I TESTED SHW3A SHW'A SfMB THE1A CIRC PEP uX'IC CIRC WATER PEP TRIP CIRCUIT 7
35 1259C7 G19 II I
PZ-14 03 26 79
'HE3A THEA THEB THW1A THEA 11
0