ML18283B341
| ML18283B341 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 07/18/1978 |
| From: | Fox H Tennessee Valley Authority |
| To: | O'Reilly J NRC/IE |
| References | |
| Download: ML18283B341 (6) | |
Text
REGULATORY INFORMATION DI TRIBUTION SYSTEM (RIDS)
DISTRIBUTION FOR INCOMING MATERIAL 50-296 REC:
OREILLY J P
NRC ORG:
FOX I-I S TN VALLEY AUTH DOCDATE: 07/18/78 DATE RCVD: 07/21/78 DOCTYPE:
L - TTER NOTARIZED:
NO COPIES RECEIVED
SUBJECT:
LTR 1
ENCL 1
LICENSEE EVENT REPT N78-015 ON 7/6/78 CONCERNING DISCOVERY OF AN ABNORMAL INDICATION ON A 4-KV STANDBY POWER CIRCUIT BREAKER.
PLANT NAML=:BROWNS FERRY UNIT 3 INCIDENT REPORTS (DISTRIBUTION CODE A002>
REVIEWER INITIAL:
XRS DISTRIBUTOR INITIAL:
<<~~~~<<<<~~~<<~<<~~~~~~
DISTRIBUTION OF THIS MATERIAL IS AS FOL OWS <<~~<<<<<<<<~~<<q<<
FOR ACTION:
INTERNAL:
ORBe3 BC~~~~W/4 ENCL Fkl
<<W/ENCL I h E<<W/2 ENCL I 0 C SYSTEMS BR<<W/ENCL NOVAK/CHECK<<W/ENCL AD FOR ENG+4lW/ENCL HANAUER~~~~W/ENCL AD FOR SYS 5 PROJ~~uW/ENCL ENGINEERING BR<<W/ENCL KREGER/J.
COLLINS<<W/ENCL K SEYFRIT/IE~~+W/ENCL NRC PDR<<W/ENCL MIPC<<W/3 ENCL EMERGENCY PLAN BR<<W/ENCL EEB<<W/ENCL PLANT SYSTEMS BR>>W/ENCL AD FOR PLANT SYSTEMS<<W/ENCL REACTOR SAFETY BR<<W/ENCL VOLLMER/BUNCH<<N/ENCL POWER SYS BR<<W/ENCL EXTERNAL:
LPDR'S ATHENS)
AL<<W/ENCL
,7 ICz LIZ CARTER+~Fl 1/ENCL NS IC4~4~W/ENCL ACRS CAT B<<W/16 ENCL DISTRIBUTION:
LTR 45 ENCL 45 SIZE:
iP+iP CONTROL NBR:
782060294 THE END
Li II t
l, I'
t
~O
~a>
JUL 18 ]974 TENNESSEE VALLEYAUTHORITY CHATTANOOGA. TENNESSEE 87401 Mr. James P. O'Really, Director U.S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region II 101 Marietta Street, Suite 3100 Atlanta~ Georgia 30303 Dear Mr. O'Reillyi TEHNESSEE VALT2iYAUTHORITY BROWS PERRY NUCLEAR PLANT UNI&3 DOCKET NO. 50-2)6 <<FACILITY OPERATING LICENSE DPR~68
~ REPORTABLE 5CCURREHOE REPORT BFRO 50-296/781$
The enclosed report provides details concerning an abnormal indication on a 4-kV standby power circuit breaker during normal operation.
This report is submitted in accordance with Browns Perry unit 3 technical specification 6.7.2.b.(2).
Very truly yours, TEHNESSEE VALLEYAUTHORITY H. S. Pox Director of Power Production Enclosure (3) cc (Enclosure):'irector (3)
Office of Management Information and. Program Control U.S. Nuclear Regulatory Commission washington D.C.
20555 Director (40)
Office of Inspection and. Enforcement U.S. Nuclear Regulatory Commission Washington'.C.
20555 An Equal Opportunity Employer
j 11
'es a
I V
e 4
~
0
~
~
r U
o e
0
~
~
~
4
'4a~)
NRC FOR~6.
P 7T)
CONTROL BLOCK:
I LlCENSEE EVENT REPORT U. S.
LEAR REGULATORY COMMISSION
,Q
{PLEASE PRINT OR TYPE ALLREQUIRED INFORMATION)
~O 8
CON'T
~O 7
8 A
L B
R F
9 LICENSEE CODE Q2 0 0>>
0 0
0 0
0 14 15 LICENSE NUMBER o
o 044 x
OE~Q 25 26 LICENSE TYPE 30 57 CAT 58 6
7 O
68 69 EVENT DATE Q10 ers nne 74 75 REPORT DATE 80Q SOURCE LJO 60 61 ~
DOCKET NUMBER EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Durin~'normal OT)eration o erations
~03 a I-kVstandby power c ircuit breaker.
The circuit breaker was foun de ec~
~o4 one diesel generator was declared ino erable.
Redundant s stems w
factory as required by T.S. 3.9.B.2.
There was no hazard to the Dublic health or
~06 safety.
~OB 7
8 9
80
[oO~]
H EVIS ION NO.
~o 32 COMPONENT MANUFACTURER 47 SYSTEM CAUSE CAUSE COMP.
VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE
~BE QT' QTE
~A 013 o
K T
B R
K 04
~o OE"
~r.
QEE.
7 8
9 10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT LERIRO EVENT YEAR REPORT NO.
CODE TYPE QET REPORT
[77~J
~
~01 1
~W
~0
~I, 21 22 23 24 26 27 28 29 30 31 ACTION. FUTURE EFFECT SHUTDOWN ATTACHMENT NPRDP PRIME COMP.
TAKEN ACTION ON PLANT
~
METHOD HOURS Q22 SUBMITTED FORM SUB.
SUPPLIER A
QIB ~ZQIB
~ZQ20
~ZQ" O
O O
O LrlQ23
~rQ24 DLQ 33 34 35 36 37 40 41 42 43 44 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Q27 o
A short in a windinp of a spring char in motor GE 10 C93
-P caused. the fuses to open in the closing circuit of a circuit breake" which supplies the auxiliarv stand-by power to the shutdown board..
The motor was replaced.
44 NAME OF PREPARER 4
7 8
9 FACILITY
~30 METHOD OF STATUS TP POWER OTHER STATUS Q DISCOVERY QB ~OMQ>>>>
~AQ>>
7 8
9 10 12 13 44 45 46 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITYQ
~IB
~z 0 ~z8 NA 7
8 9
10 11 45 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION QSB
~oo o 0" i 0>>
7 8
9 11 12 13 PERSONNEL INJURIES NUMBER DESCRIPTIONQ41 R ~oo o
Q4o NA 7
8 9
11 12 LOSS OF OR DAMAGETO FACILITYQ43 TYPE DESCRIPTION EK LiJQ42 NA 7
8 9
10 PUBLICITY LSSUED DESCRIPTIONQ
~2O
~NQ 7
8 9
10 DISCOVERY DESCRIPTION Q32 NRC USE ONLY PHONE:
68 69 LOCATION OF RELEASE Q NA 80 80 80 80 80 RP
~
80 0
O
0
<1