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LER-1977-032, /03L-0:on 770418,during Mode 1 Operation, Protective Relay Operation Caused Loss of 5024 500-kV Transmission Line.Caused by Smoke from Forest Fire 36-37 Miles from Facility |
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| 2721977032R03 - NRC Website |
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- - ICENSEE EVENT REPORT CONTROL BLOCK 6
UCENSEE LICENSE EVElllT NAME LICENSE NUM9ER TYPE:
TYPE I
@TI]!NIJ-1s1G1s111 10101-10101010101-1010J 1411111 ll lJ IOI I 111 9
1-4 15 2
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REPORT REPORT CATECOAY TY~ SOURCE
, DOCKET NUM9ER EVENT DATE AEPORT DATE
~CON"T~; I OJ l~J l~I I 015101-1012171 2J 61 1014111s17t71 69 74 10 15 I 0 12 17 flJ 75 EVENT OESCfllPTION
@n]I During Mode 1 operation, protective relay operation caused the loss of I
7 8 9
.og
~ the 5024, 500kV transmission line.
5023 remained in service through out 7
8
@:E]
this event.
Line was checked by helicopter, protective relays reset and 7
8 [Q}§]( 5024 was returned to service.
This is the first occurrence of this type. I 7
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7 8 9 PRIME 20 SYSTEM
CAUSE
COMPO,..ENT COMPONENT cooe:
COOE COMPONENT COOE 5UP9UER MANUFACTUAER [ill]LEIAI L£J 1z1z1z1z1z~
LU lZl919191 VIOLATION lliJ 7
8 9 10 11 12 17 43 44
- - 47 43 CAUSE DESCRIPTION
~I Smoke from~ forest fire 36-37 miies from the station caused arcing to [ilif 9 I
so 7
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89 20 P' A::Jl.. ITY STATUS EEl LJJ.
1 a
9 l"ORM OF
°"'POWER Io I 51 5 I 10 12
. METMOO OF OTHE-R STATUS DISCOVEl'IV DISCOVERY CESCRIPTION l~~~N~l~A.__~~' L..9J 13 4-4 45 N/A ACTIVITY CONTENT REL..EASEO OF l'IEL..EASE AMOUNT OF ACTIVITY GE w w I N/A LOCATION OF REL.EASE ti~
~~~~-N~/_A~~~~~___..I 7
8 9
10 11
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PERSONNEL EXPOSURES NUMS£R TVPE CESCRIPTION [ili) l O IO I O I lB.l I
N/A I
7 8 9 11 12 1~3;----------~;.;;;.....------------------------------------------~-----50~
PERSONNEL INJURIES NUMBER
DESCRIPTION
EE lO 10 I 0 I I N/A I.
1 a 9 11
~12...-----~--------.__--------~~---------------~----------------~--~ao~
NAME: __________._T_ *
..__..::Lo...**~..;;.S_o_e=n;..,;c;....e.;....;..;.r __________ _
PHONE: ( 6 0 9) 3 6-S-7 0 0 0 Ext. Sale!:l-:
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| 05000000/LER-1977-020-03, /03L:on 770404,RCS Leakage Determined to Be Greater than 10 Gpm.Caused by Packing Leakage Past Stems on RTD Bypass Throttle Valves 13RC20 & 14RC20.Valves Placed on Backseat & Stem Leakage Decreased | /03L:on 770404,RCS Leakage Determined to Be Greater than 10 Gpm.Caused by Packing Leakage Past Stems on RTD Bypass Throttle Valves 13RC20 & 14RC20.Valves Placed on Backseat & Stem Leakage Decreased | | | 05000272/LER-1977-032-03, /03L-0:on 770418,during Mode 1 Operation, Protective Relay Operation Caused Loss of 5024 500-kV Transmission Line.Caused by Smoke from Forest Fire 36-37 Miles from Facility | /03L-0:on 770418,during Mode 1 Operation, Protective Relay Operation Caused Loss of 5024 500-kV Transmission Line.Caused by Smoke from Forest Fire 36-37 Miles from Facility | | | 05000272/LER-1977-032, Forwards LER 77-032/03L-0 | Forwards LER 77-032/03L-0 | | | 05000272/LER-1977-037-03, /03L:on 790514,during Mode 1 operation,5023 500-kV Transmission Line Tripped.Caused by Forest Fire Between Towers 36/1 & 36/3 | /03L:on 790514,during Mode 1 operation,5023 500-kV Transmission Line Tripped.Caused by Forest Fire Between Towers 36/1 & 36/3 | | | 05000272/LER-1977-037, Forwards LER 77-037/03L-0 | Forwards LER 77-037/03L-0 | | | 05000000/LER-1977-038-03, /03L:on 770519,RCS Leakage Determined to Be Greater than 10 Gpm from Stem Leakoff on Manual Isolation Valves 1PS24 & 1PS28 for Pressurizer Spray Valves.Caused by Packing Leakage.Valves Will Be Repacked at Next Outage | /03L:on 770519,RCS Leakage Determined to Be Greater than 10 Gpm from Stem Leakoff on Manual Isolation Valves 1PS24 & 1PS28 for Pressurizer Spray Valves.Caused by Packing Leakage.Valves Will Be Repacked at Next Outage | | | 05000272/LER-1977-045, Forwards LER 77-045/03L-0 | Forwards LER 77-045/03L-0 | | | 05000272/LER-1977-045-03, /03L-0:on 770626,during 100% Generator Trip Test, 5024 500-kV Transmission Line Became Inoperable.Caused by Bus Sections 1-5 & 5-6 Breaker Flashover Nhc Iia Relay Remaining Energized.Relay Removed from Svc | /03L-0:on 770626,during 100% Generator Trip Test, 5024 500-kV Transmission Line Became Inoperable.Caused by Bus Sections 1-5 & 5-6 Breaker Flashover Nhc Iia Relay Remaining Energized.Relay Removed from Svc | | | 05000272/LER-1977-046-03, /03L-0:on 770626,during Mode 2 Operation,Station Power Transformer Became Inoperable Due to Protective Relay Operation.Caused by Personnel Error in Not Tagging Breaker Failure | /03L-0:on 770626,during Mode 2 Operation,Station Power Transformer Became Inoperable Due to Protective Relay Operation.Caused by Personnel Error in Not Tagging Breaker Failure | | | 05000272/LER-1977-046, Forwards LER 77-046/03L-0 | Forwards LER 77-046/03L-0 | |
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