05000237/LER-1982-015
From kanterella
| ML20053E243 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 05/19/1982 |
| From: | Holland P COMMONWEALTH EDISON CO. |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| Shared Package | |
| ML20053E234 | List: |
| References | |
| LER-82-015-03L-03, LER-82-15-3L-3, NUDOCS 8206070723 | |
| Download: ML20053E243 (2) | |
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Category:LICENSEE EVENT REPORT (SEE ALSO AO RO)
MONTHYEARML20203L0281986-04-25025 April 1986
[Table view]Informs of Planned Site Visit to Obtain Info Supporting Implementation of Emergency Response Data Sys,Including Availability of PWR or BWR Parameters in Digital Form & Characterization of Available Data Feed Points 05000237/LER-1983-084, Updated LER 83-084/03X-1:on 831230,during Normal Operation, Primary Containment Oxygen Sample from Torus Alarmed on Low Level Sample Flow.Caused by Sample Line Moisture.Line Drained & Leads reconnected.W/840314 Ltr1984-03-14014 March 1984 Updated LER 83-084/03X-1:on 831230,during Normal Operation, Primary Containment Oxygen Sample from Torus Alarmed on Low Level Sample Flow.Caused by Sample Line Moisture.Line Drained & Leads reconnected.W/840314 Ltr 05000237/LER-1983-080, Supplemental LER 83-080/03X-1:on 831124,offgas Log Rad Monitor 2-1705-A Delivered Offgas High Alarm & High Alarm Spiked & Drifted Downscale.Caused by Burned Out Resistor. Power Supply Installed & Monitor Calibr1983-12-20020 December 1983 Supplemental LER 83-080/03X-1:on 831124,offgas Log Rad Monitor 2-1705-A Delivered Offgas High Alarm & High Alarm Spiked & Drifted Downscale.Caused by Burned Out Resistor. Power Supply Installed & Monitor Calibr ML20081M2021983-11-0202 November 1983 83-037/03L-0:on 831005,during Daily Battery Surveillance, 250-volt Battery Charger Float Voltage Indicated Improper Float Voltage.Caused by Defective Amplifier Board.Defective Board Replaced 05000237/LER-1982-023, Revised Deviation Rept for LER 82-023/03L-0:on 820623, Wrong Assumption Made for Drywell to Torus Differential Pressure.Caused by High Torus Pressure Transmitter 2-1673 Measurement1982-07-23023 July 1982 Revised Deviation Rept for LER 82-023/03L-0:on 820623, Wrong Assumption Made for Drywell to Torus Differential Pressure.Caused by High Torus Pressure Transmitter 2-1673 Measurement ML20147A9091978-09-0808 September 1978 /03L on 780821:during Survey,Dis 250-1,MSL Hi Flow Isolation Switch Psid 3-261-2C Tripped at 135.5 Psid.Caused by Bent Indicator Pointer Dragging Across Face Plate Prohibiting Proper Oper.(Encl to 7809220139) ML20147A9051978-09-0808 September 1978 /03L-0 on 780908:steam Leaking from Ventrom Vent Line.Caused by Cracked Weld.Repaired by Welding Externally. (Encl to 7809220138) ML20147A8941978-09-0808 September 1978 /03L on 780817:room Cooler Fans Failed to Start When Pumps 3B & 3C started.4KV Switchgear 33 & 34 Auxiliary Contacts Were Found Dirty.(Encl to 7809220129) ML20147A7211978-09-0808 September 1978 /01X-1 on 780320:Cracks Found on end-to-pipe Weld on CRD Return Line.Caused by Intermittent to Low Cooling Water Flow Leaving the CRD Nozzle.Pipe Was Removed & Replaced. (Encl to 7809180035) ML20147A7361978-09-0707 September 1978 /01T-0 on 780824:Unit 2 Diesel Failed W/ Diesel Generators 2 & 3 Out of Serv Because Pinion Gear on an Air Start Motor Did Not Engage W/ Diesel Ring Gear.Air Start Motor Replaced. (Encl to 7809180225) ML20147A7891978-08-25025 August 1978 /01X-1 on 780428:During Unit 2 Startup Opers, a LPCI & Core Spray Subsys Were Inadvertantly Rendered Inoper Because Personnel Had Closed LPCI Pump & Discharge Valves on Unit 2 Vice 3.(Encl to 7809180320) 05000237/LER-1950-237, Updated LER 50-237/75-048:on 751007,through-wall Crack Found in Drywell/Torus Nitrogen Purge Line 1604-18.Addl Mods, Including Temp Controlled Isolation Valve Installation, Delayed Until Proposal Review1977-06-10010 June 1977 Updated LER 50-237/75-048:on 751007,through-wall Crack Found in Drywell/Torus Nitrogen Purge Line 1604-18.Addl Mods, Including Temp Controlled Isolation Valve Installation, Delayed Until Proposal Review 05000237/LER-1976-066, Updated LER 76-066/01T-1:on 761113,during Maint Outage,Hpci Injection Valve M02-23018 Found in Closed Position W/Valve Stem Severed.Caused by Mechanical Overstress of Stem.Stem Replaced1977-05-13013 May 1977 Updated LER 76-066/01T-1:on 761113,during Maint Outage,Hpci Injection Valve M02-23018 Found in Closed Position W/Valve Stem Severed.Caused by Mechanical Overstress of Stem.Stem Replaced 05000237/LER-1976-063, Updated LER 76-063/03L-l:on 761003,stack Gas Sample Pump Flow Appeared Abnormally Low.Caused by Collection of Carbon Impeller Vane Products in Pump Cavity & Filter.Pump & Filter Replaced1977-03-0303 March 1977 Updated LER 76-063/03L-l:on 761003,stack Gas Sample Pump Flow Appeared Abnormally Low.Caused by Collection of Carbon Impeller Vane Products in Pump Cavity & Filter.Pump & Filter Replaced 05000237/LER-1976-053, Updated LER 76-053/01T-1:on 760803,util Advised by GE That MAPLHGR Limits in Effect No Longer Considered Sufficiently Conservative at Low Core Flow Rates.Problem Thought to Be ECCS Models Used to Determine Rates1977-01-0303 January 1977 Updated LER 76-053/01T-1:on 760803,util Advised by GE That MAPLHGR Limits in Effect No Longer Considered Sufficiently Conservative at Low Core Flow Rates.Problem Thought to Be ECCS Models Used to Determine Rates 05000000/LER-1950-237, Updated LER 50-237/01L:on 760406,unacceptable Ultrasonic Indication Found on Isolation Condenser safe-end.Caused by Cracks in safe-ends.Cracked safe-end Removed & Sent to Bmcl for Metallographic Analysis1976-07-13013 July 1976 Updated LER 50-237/01L:on 760406,unacceptable Ultrasonic Indication Found on Isolation Condenser safe-end.Caused by Cracks in safe-ends.Cracked safe-end Removed & Sent to Bmcl for Metallographic Analysis 1986-04-25 Category:TEXT-SAFETY REPORT MONTHYEARML20249C8491999-09-30030 September 1999
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