ML19345G093
| ML19345G093 | |
| Person / Time | |
|---|---|
| Site: | Humboldt Bay |
| Issue date: | 08/20/1976 |
| From: | Bierbaum G PACIFIC GAS & ELECTRIC CO. |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| RO-76-09, RO-76-9, NUDOCS 8103020200 | |
| Download: ML19345G093 (2) | |
Text
LICENSEE EVENT REPORT CONTROL tr.OCK:l ' l I dl l
l (PL E PRINT ALL REQUIRt3 BNFORMATIO3) 6 1,
NAM totNSE NUMBER E
TVPE lC l A lH lMl Bl 1l l 0l 0l-l0 l 0 l 0 l 0l 0l-l 0l0 l l 4 l1 l1 l1 l1l l 0l 3l o1 7 89 14 15 25 26 30 31 32 TN Enc $
ooCKET NUMBCR EVENT oATE RfPoRT oATE cAircoRY
@COtr1 l Pl 0] W W l 0l Sl 3l-l0 l1l 3 l 3l l 0l 7l3 l1 l7 l6 l l0 l8 l2 10 l 7 l 6 l 7 8
$7 50
$9 60 61 68 69 74 75 80 EVENT DESCR!PTION gg l During our refueling and maintenance outage, potential indicating lamps on the gas l
7 89 80 Q l treatment exhaust fan 125 VDC breaker were discovered to be out and the breaker was l
7 19 80
@ ( found to be inoperable.
This is a _ redundant system and the lead A-C system was l
7 00 00 Q l cvailt.ble and operable. This is a repetitive occurrence. A similar lamp f ailure l
80 7 89 lamps on the (con t)_j
@ l nccurrna in 1972 on a rnotor operated valve brea' ar and all 120 volt 80 7 89 nwt coot coVPONENT coot R
R VOLATON BE l Sl Cl W l C l K l Tl Bl Fj K l
(_A_j lG l0 l8-l0 l W
7 UB 10 11 12 17 43 44 47 48 CAUSE DESCR;PTION gg l Cause was shorting of G.E. Co. indicating lamp, model CR2940VC-212AC,12SV AC-DC l
7 89 60 Q l uhich caused the control circuit fuse to blow. The lamp was replaced with G.E. Cat.
l 7 00 80 Q l 6105700G43, Type ET-6,125 V. DC lamp and socket.
l
's us s power OTHER STATUS C VER otSCovtRY oESCR'PTON
[1}il
[H J l 0l 0l 0l l
NA l
lAl l Noticed indicating lights out l
7 8 9
10 12 13 44 45 46 60 or NASE l NA l
l NA l
U
'^
AMOUNT OF ACTMTV LoCATON of RELEASE (Ltasto l_Z_j E
W 7 8 9
10 11 44 45 00 PERSONNEL EXPOSURES NUMBER TYPE DESCR!PTON Q l 0l 0l 0 l l
NA l
7 89 11 12 13 80 PERSONNEL INJURIES NUMBE R of CCRIPTON DE l 0l0 l0 l l NA l
7 89 11 12 80 OFFSITE CONSEQUENCES
@E l No probable consequences since lead fan was available and operable.
l 7 89 00 LOSS OR OAMAGE TO FACILITY TYPT of SCRPTON DE L zJ l NA l
7 89 10 80 PUBLICITY Q[ l NA l
7 89 BO r-~^"^ ~"-
P00R ORIGINAL l
7 H9 ga EE I l
7 09 g,o NAME:
G. A. Bierbaum magg (707) 443-2787
',4
(_
)
EVD!T DESCRII'fl0N (cont) valve control center were replaced during the 1972 regularly scheduled refueling outage. All safety related breakers in No. 3 Unit were converted to 24v ic=ps during subsequent outages as parts became available except for the DC exhaust fan breaker and the DC caustic pump breaker which were overlooked. The lamps on the gas treatment fan breaker were replaced with 24V lamps and resistors and the control circuit fuse replaced in kind. AH remaining 120V lamps associated with Unit No. 3 systems win be converted as appropriate during the present refueling outage (LER 76-09).
O i
l l
P00R ORIGINAL 1
W~
~--.-....-,.n-
-