U.S. I Event# 47395

1110112011
Event#
Power Reactor
Site:
Unit:
Reactor Type:
Containment Type:
SEABROOK
Region: 1
1
[1] W-4-LP
DRY AMB
State: NH
Notification Date I Time: 11/01/2011
Event Date / Time: 10/31/2011
Last Modification: 11/01/2011
47395
09:38 (EDT)
18:00 (EDT)
Notifications: NEIL PERRY
NRC Notified by: MICHAEL O'KEEFE
HQ Ops Officer: PETE SNYDER
Emergency Class: NON EMERGENCY
10 CFR Section:
R1DO
UNSPECIFIED PARAGRAPH
21.21
Unit Scram Code
1
Page I
U.S. NuclearRegulatory Commission OperationsCenter Event Report
N
RX Crit lnit Power
Yes
100
Initial RX Mode
Curr Power
Current RX Mode
Power Operation
:100
Power Operation
GENERAL ELECTRIC CR-120B RELAYS SUPPLIED BY NATIONAL TECHNICAL SYSTEMS FAIL BENCH TEST
"On October 31, 2011, NextEra Energy Seabrook, LLC completed a 10 CFR 21 evaluation of a condition
associated with General Electric (GE)-CR-120B relays supplied by National Technical Systems, Inc. and intended
for use at Seabrook. Six (6) Quality Level 1 GE-CR-120B relays failed bench testing. During bench testing, the
subject relays failed to reset when de-energized. An evaluation was performed to determine the applications
where these relays could have been and were installed and to determine if the failure of the subject relays could
result in a Substantial Safety Hazard as defined in 10 CFR 21.3. The evaluation concluded that there is one safety
significant application relative to the failure of the GE-CR-120B relays to reset in the Seabrook Diesel Air Handling
System (DAH).
"Each DAH system train (includes one supply fan and one exhaust fan per train) has one relay that provides a start
permissive for the ventilation fans. An analysis of the failure of a GE-CR-120B relay in the DAH system
determined that, if the relays were installed, the condition could create a substantial safety hazard due to a
subsequent loss of the emergency power function. Therefore, this report is being submitted pursuant to the
requirements of 10 CFR 21.21(d)(3)(i). A written notification will be made to the NRC within 30 days pursuant to 10
CFR 21.21(d)(3)(ii).
"No actual safety consequences resulted from this condition because the GE-CR-120B relays were not installed in
the plant in this safety significant application."
The licensee notified the NRC Resident Inspector.
7-
JAN-02-1996
NRC FORM 361
P. 01/01
23:07
N~c
FOM
361OPERATIONS
REACTOR PLANT
EVENT NOTIFICATION WORKSHEET
(12-2000)
PAGE I OF 2
U.S. NUCLEAR REGULATORY COMMISSION
CENTER
EN #
or B0O-449-S89d,
a01-51-0550
-[let)
BACKUPS
PRIMARY - 301-815-5100 or 80O-$32-3469.
NRC OPERATION TELEPHONE NUMBER:
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,ow. n E are rnwvidd thlse teleohone numbers.
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301-415-0550 and
NCTIRCATION TIME
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EVENT
1-900/
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301-415-0553
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FACILITY OR ORGANIZATION
Seabrook Station
UI.T
1
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MATERL.•_XWOSURE
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UNLIMAEC .(Iv(A) COCSDiasdise to RCS
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(see noed colurnis) _(I1y)(8)
AnERT
uNUSUAL EVENT
50.72 NON-EMERG,.ENCY
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POWERMODEAIFTER
100%/I1
CLASSIFICATIONS
EVENT
GB2NE•tA
EMREC
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POIASVJOLC BEORE
EVENTCATE
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NAME DRCALLER
Michael O'Keefe
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80-Day Optional 10 CFR 50.73(a)( 1
APpi
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Invalid Spu..fi•d Sym Atllon
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B-Hr. NonlEmeMency 10 CFR 60.721b4)3
A=C- Other Unspecified Requirement (Identify)
I(11,(A) D•od Cordi,
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Unsmieyzed Condition
AmA 1/
2
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(IX)(A) Spedlied System AdEuedon
DESCRIPTION
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olsite Noti*scao
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Ihdude: Systems affected, a.fjlions and m Initiating signals, caust es. ed of event on plant, adis
ez
-
takhn or planned. etc. (Con•En,' 6A bee¢)
On October 31, 2011, NextEra Energy Seabrook, LLC completed a 10 CFR 21 evaluation of a condition associated with General
Electric (GE) CR-1 200 relays supplied by National Technical Systems, Inc. and intended for use at Seabrook. Six (6) Quality Level 1
GE CR-1208 relays failed bench testing. During bench testing, the subject relays failed to reset when de-energized. An evaluation was
performed to determine the applications where these relays could have been and were installed and to determine if the failure of the
subject relays could result in a Substantial Safety Hazard as defined in 10 CFR 21.3. The evaluation concluded that there is one safety
significant application relative to the failure of the GE-CR 120B relays to reset inthe Seabrook Diesel Air Handling System (DAH).
Each DAH system train (includes one supply fan and one exhaust fan per train) has one relay that provides a start permissive for the
ventilation fans. An analysis of the failure of a GE-CR 120B relay In the DAH system determined that, if the relays were installed, the
condition could create a substantial safety hazard due to a subsequent loss of the emergency power function. Therefore, this report is
being submitted pursuant to the requirements of 10 CFR 2121 (d)(3)(i). A written notification will be made to the NRC within 30-days
pursuant to 10 CFR 21.21(d)(3)(i).
No actual safety consequences resulted from this condition because the GE-CR 120B relays were not installed in the plant in this safety
significant application.
The Senior Resident Inspector was notified.
NOTIFICATIONS
NRC RESIDENT
ST ATE(s)
WIlL SE
I1
/
-.
ANYTHING UNUSUAL OR
IOT
N/ UNDERSTOOD?
0 ALESY
LL S Y
SSTE
TM
E MSYEIDNAL
FUNCTION AS REQUIRED?
I
LOCAL
OTHER GOV AGENCIES
MEDIA/PRESS RELEASE
NO
YES
_
MODE OF OPERATION
.UNTIL
CORRECTE.
N/A
Y--n
av
__
Y
abov
NO'-o
ESTIMATED
RESTART
DATE:N/A
ADmONALINFO ON BACK
] NO
[E YES
NRC FORM 361 (12-2000)
TOTAL P.01