ML17252A823
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| ML17252A823 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 02/10/1975 |
| From: | Stephenson B Commonwealth Edison Co |
| To: | James Keppler NRC/RGN-III |
| References | |
| Download: ML17252A823 (1) | |
Similar Documents at Dresden | |
|---|---|
Category:Licensee Event Report (LER)
MONTHYEAR05000237/LER-2023-001, HPCI Inoperable Due to Air Void Accumulation2024-01-19019 January 2024
[Table view]HPCI Inoperable Due to Air Void Accumulation 05000237/LER-2022-001-01, Reactor Scram Due to Turbine Trip on High Reactor Water Level Caused by Feedwater Regulating Valve Failure2022-10-28028 October 2022 Reactor Scram Due to Turbine Trip on High Reactor Water Level Caused by Feedwater Regulating Valve Failure 05000237/LER-2022-002-01, Ultimate Heat Sink Declared Inoperable Due to River Grass Accumulation2022-10-28028 October 2022 Ultimate Heat Sink Declared Inoperable Due to River Grass Accumulation 05000237/LER-2022-002, Ultimate Heat Sink Declared Inoperable Due to River Grass Accumulation2022-09-27027 September 2022 Ultimate Heat Sink Declared Inoperable Due to River Grass Accumulation 05000237/LER-2022-001, Reactor Scram Due to Turbine Trip on High Reactor Water Level Caused by Feedwater Regulating Valve Failure2022-09-0909 September 2022 Reactor Scram Due to Turbine Trip on High Reactor Water Level Caused by Feedwater Regulating Valve Failure 05000249/LER-2021-001-01, Reactor Scram Due to Main Power Transformer Failure2022-06-14014 June 2022 Reactor Scram Due to Main Power Transformer Failure ML20135G7442020-05-14014 May 2020 Final ASP Analysis - Dresden 2 (LER 237-90-006) 05000249/LER-2017-0012017-12-27027 December 2017 Unit 3 Standby Liquid Control System Inoperable Due to a Manufacturing Defect Causing a Piping Leak, LER 17-001-01 for Dresden Nuclear Power Station, Unit 3 Regarding Unit 3 Standby Liquid Control System Inoperable Due to a Manufacturing Defect Causing a Piping Leak ML17252B5052017-11-0303 November 2017 LER 77-050/03L-0 for Dresden, Unit 2 Re Local Leak Rate Test of Drywell Personnel Air Lock During Refueling ML17252A3262017-10-21021 October 2017 LER 77-040/03L-0 for Dresden 3 Regarding the Circuit Breaker for Service Water Makeup Valve MO-3-4102 to the Isolation Condenser Found in Off Position ML17252B4922017-08-28028 August 2017 LER 78-028/01X-1 for Dresden, Units 2 and 3 Re NRC Request for Immediate Actions to Be Taken to Mitigate the Potential for a Spurious Closure of a Recirculation Loop Suction Valve with a LOCA Occurring Between the Loop Discharge and Suction 05000237/LER-2016-0032017-05-26026 May 2017 Control Room Emergency Ventilation System Charcoal Filter Bank Failure to meet the Methyl Iodide Penetration Acceptance Criteria, Dresden Nuclear Power Station, Units 2 and 3, Cancellation of Licensee Event Report 237/2016-003-00, Control Room Emergency Ventilation System Charcoal Filter Bank Failure to meet the Methyl Iodide Penetration Acceptance Criteria ML17153A0342017-05-26026 May 2017 Cancellation of Licensee Event Report 237/2016-003-00, Control Room Emergency Ventilation System Charcoal Filter Bank Failure to Meet the Methyl Iodide Penetration Acceptance Criteria 05000237/LER-2016-0042017-01-0909 January 2017 Reactor Building Differential Pressure Less than Technical Specification Requirement, LER 16-004-00 for Dresden Nuclear Power Station, Unit 2, Regarding Reactor Building Differential Pressure Less than Technical Specification Requirement 05000249/LER-2016-0012016-08-25025 August 2016 Alert Declared from Unit 3 HPCI Auxiliary Oil Pump Motor Fire, LER 16-001-00 for Dresden Nuclear Power Station Regarding Alert Declared from Unit 3 HPCI Auxiliary Oil Pump Motor Fire 05000237/LER-2016-0022016-07-15015 July 2016 Unit 2 HPCI Inlet Steam Drain Pot Piping Leak Resulting in HPCI Inoperability, LER 16-002-00 for Dresden Nuclear Power Station, Unit 2 Regarding HPCI Inlet Steam Drain Pot Piping Leak Resulting in HPCI Inoperability 05000237/LER-2016-0012016-04-0808 April 2016 Secondary Containment Differential Pressure Transient, LER 16-001-00 for Dresden Nuclear Power Station, Unit 2 and 3 Regarding Secondary Containment Differential Pressure Transient 05000249/LER-2015-0012016-01-22022 January 2016 Main Steam Line Flow Switches Found Outside Tech Spec Allowed Value, LER 15-001-01, Dresden, Unit 3 Main Steam Line Flow Switched Found Outside Tech Spec Allowed Value ML1015505692009-07-24024 July 2009 Letter LS-AA-1 25-1001, Elevated Tritium Values Identified in 2 Storm Drains Due to Through-Wall Leaks in Underground Piping for Dresden Units 2 and 3. ML0602404072004-05-0505 May 2004 Final Precursor Analysis - Dresden Unit 3 - Unit 3 Scram Due to Loss of Offsite Power and Subsequent Inoperability of the Standby Gas Treatment System for Units 2 and 3 ML0234501722002-12-0202 December 2002 LER 89-029-05, Dresden Unit 2, Elevated HPCI Discharge Piping Temperature Due to Reactor Feedwater System Back Leakage ML17252B5391981-06-10010 June 1981 LER 81-034/03L-0 for Dresden, Unit 2 Re J-3 CRD Was Tested for Overtravel. the Overtravel Alarm Came Up and Rod Position Indication Was Lost ML17252B5411981-06-0808 June 1981 LER 81-030/01T-0 for Dresden, Unit 2 Re Operator Noticed the HPCI Steam Line Was Cold and Filled with Water. the HPCI System Was Declared Inoperable ML17252B5401981-06-0505 June 1981 LER 81-024/03L-0 for Dresden, Unit 2 Re While Conducting Routine Review of Surveillance, It Was Found That the Monthly Surveillance Required by Tech. Spec. 4.4.c.1 for Standby Liquid Control Tank Sampling Was Three Days Overdue ML17252B5271981-06-0303 June 1981 LER 81-023/03L-0 for Dresden, Unit 2 Re While Running HPCI Pump Test, the Operator Observed Torus Wide Range Level Instrument Reading 0 Inches and Narrow Range Level Instrument Reading, About - 2 Inches and Oscillating ML17252B5281981-04-14014 April 1981 LER 81-015/03L-0 for Dresden, Unit 2 Re the Fire Marshall Discovered That the Heat Detectors Were Not Functionally Tested within the 6 Month Interval Required by Tech. Spec. 4.12.A.1 ML17252B5291981-03-23023 March 1981 LER 81-011-03L-0 for Dresden, Unit 2 Re Observed Inadequacies in the Implementation of Administrative or Procedural Controls Which Threaten to Cause Reduction of Degree of Redundancy Provided in Reactor Protection Systems or Engineered Safe ML17252B5301981-02-20020 February 1981 LER 81-080/031-0 for Dresden, Unit 2 Re Abnormal Degradation of Systems Other than Those Specified in Item B.1.e Above Designed to Contain Radioactive Material Resulting from the Fission Process ML17252B5321981-02-17017 February 1981 LER 81-070/03L for Dresden, Unit 2 Re While Conducting Steam Line Area Temperature Switch Calibration Surveillance, Temperature Switch TS 2-261-180 Failed to Trip ML17252B5331981-02-0202 February 1981 LER 81-020/03L-0 for Dresden, Unit 2 Re During Refueling Outage LPCI Test Spray Valve Failed to Shut Electrically, One Set of Thermal Contacts Would Not Reset ML17252B5351981-01-23023 January 1981 LER 80-050/03L-0 for Dresden, Unit 2 Re the 1501-62D Pressure Switch Actuated at 44.2 Inches of Water Increasing, Tech. Spec. Limit Is Less than or Equal to 41.6 Inches of Water Increasing ML17252B5341981-01-23023 January 1981 LER 80-049/03L-0 for Dresden, Unit 2 Re at Completion of Secondary Containment Leak Rate Test the Reactor Building Ventilation Isolation Valve 2A-5742 Would Not Open ML17252B5371980-12-30030 December 1980 LER 80-046-00 for Dresden 2 Regarding a Failure to Receive CRD Volume During a Reactor Scram ML17252B5361980-12-29029 December 1980 LER 80-046/03L-0 for Dresden, Unit 2 Re Conditions Leading to on Operation in a Degraded Mode Permitted by a Limiting Condition for Operation or Plant Shutdown Required by a Limiting Condition for Operation ML17252B5381980-12-0303 December 1980 LER 80-043/03L-0 for Dresden, Unit 2 Re Surveillance Testing of the Condenser Low Vacuum Switches, Pressure Switch 2-503D Was Found to Have a Trip Point of 22.85 Inches Hg ML17252B5431980-11-12012 November 1980 LER 80-041/03L-0 for Dresden, Unit 2 Re Reactor Building Vent and Refueling Floor Rad Monitor Surveillance (DCP 2007-12) Was Performed ML17252B5421980-11-12012 November 1980 LER 80-042/03L-0 for Dresden, Units 2 and 3 Re That Technical Staff Personnel Revealed That the Ultrasonic Testing of the Scram Discharge Volume Was Not Performed During the 1500-2300 Shift ML17252B1841980-10-31031 October 1980 LER 80-40/01T-0 for Dresden Unit 3 Regarding Failure of the HPCI Inboard Steam Supply Valve to Open ML17252B5441980-10-29029 October 1980 LER 80-039/03X-1 for Dresden, Unit 2 Re HPCI Inboard Steam Supply Valve Opened and Had a Dual Light Indication ML17252B5451980-10-23023 October 1980 LER 79-017-01X2 for Dresden, Units 2 and 3 Re Inadequacies Observed in Implementation of Administrative Procedural Controls Which Threaten to Cause Reduction of Degree of Redundancy Provided in Reactor Protection System or Engineered Safety ML17252B5461980-10-0808 October 1980 LER 80-016/01T-1 for Dresden, Unit 2 Re While Shutdown and Conducting 300 Psi Primary System Hydrostatic Leak Inspection, Water Discovered Dripping from LPCI Check Valve Up Stream Drain Line ML17252B5471980-10-0707 October 1980 LER 80-036/03L-0 for Dresden, Unit 2 Re Discovery That the Six Month Functional Test Required by Tech. Spec. 4.12.A.1 of the Cardox System Heat Detectors Was Not Performed within the Allowable Surveillance Interval ML17252B5481980-10-0101 October 1980 LER 80-033/03L-0 for Dresden, Unit 2 Re the Frequency of Water Addition to the Torus Increased. Leak Rate Tests Indicated a Leak in the 2B LPCI Heat Exchanger ML17252B1861980-08-22022 August 1980 LER 80-032/03L-0 for Dresden Unit 3 Regarding During Normal Operations While Performing APRM Rod Block and Scram Functional Tests, APRM 3 Failed to Initiate a Rod Block ML17252B5501980-08-19019 August 1980 LER 80-027/03L-0 for Dresden, Unit 2 Re Dropping Load in Preparation for I.E.B. 80-17 Scram Tests, Low Level of Diesel Generator Coolant Present in the Water Tank Was Noticed by Equipment Operator ML17252B5161980-08-14014 August 1980 LER 80-024/03L-0 for Dresden, Unit 2 Re Drywell Oxygen Concentration Indication Failed Downscale in Violation of Tech. Spec. 3.7.A.6.d ML17252B1881980-08-0404 August 1980 LER 80-030/03L-0 for Dresden Unit 3 Regarding While Reducing Power for Manual Scram Required by I.E. Bulletin 80-17, Routine Surveillance of MSIV Closure Times Showed That MSIVs 3-203-2B and 2D Closed in Less than 3 Seconds ML17252B1901980-06-13013 June 1980 LER 80-023/03L-0 for Dresden Unit 3 Regarding During Normal Operation with Reactor Level Instrument Surveillance in Progress, Level Switch LIS 3-263-58A Tripped at Less than Tech. Spec. Limit of 144 Inches ML17252B1911980-06-13013 June 1980 LER 80-024/03L-0 for Dresden Unit 3 Regarding During Normal Operation with Reactor Level Instrument Surveillance in Progress, Level Switch LIS 3-263-58AB Tripped at Less than Tech. Spec. Limit of 84 Inches ML17252B1921980-06-10010 June 1980 LER 80-025/03L-0 for Dresden Unit 3 Regarding During Normal Operation While Performing Main Steam Line High Flow Isolation Surveillance, Flow Switch DPIS 3-261-2A Was Out of Tech. Spec. Limits, Table 3.2.1 2024-01-19 Category:Note to File incl Telcon Record MONTHYEARML17252B4162017-09-0909 September 2017
[Table view]Letter Confirming a Conversation Concerning the Report of an Empty Spent Fuel Shipping Cask Which Had Some Areas of Removable Surface Contamination ML17252B4142017-09-0909 September 2017 Letter Confirming a Conversation Concerning the Failure of HPCI Valve Mo 2-2301-8 During a Maintenance Outage and the Discovery of a Broken Stem ML0528500652005-10-24024 October 2005 Minutes of Conference Call Regarding Dresden MSSV Setpoint Tolerance (Response to License Condition 4 from July 30, 2004 Amendment) ML0331002702002-08-19019 August 2002 Note to Telephone Conversation - Robert O'Connell - NMSS-2002-A-0002 ML0331002432002-08-0707 August 2002 Note to Telephone Conversation - Robert O'Connell - NMSS-2002-A-0002 ML0331001982002-05-0808 May 2002 Noie to Telephone Conversation - Robert O'Connell - NMSS-2002-A-0002 ML0331001842002-05-0707 May 2002 Note to Telephone Conversation - Robert O'Connell - NMSS-2002-A-0002 ML0331001972002-05-0707 May 2002 Note to Telephone Conversation - Robert O'Connell - NMSS-2002-A-0002 ML0331001732002-04-25025 April 2002 Note to Telephone Conversation - Robert O'Connell - NMSS 2002-A-0002 ML17252B4171976-12-0606 December 1976 Letter Confirming a 12/06/1976 Conversation Concerning the Receipt of an Empty Spent Fuel Shipping Cask Which Had Some Areas of Removeable Surface Contamination ML17252B4181976-12-0303 December 1976 Letter Confirming a Conversation Concerning Information Received That Indicates the R.W.M. Should Remain in Service or a Qualified Person Must Verify All Control Rod Movement Through 20% Power ML17252B4191976-12-0202 December 1976 Letter Confirming a 12/02/1976 Conversation Concerning Receipt of an Empty Spent Fuel Shipping Cask from GE Morris Operation Which Had Some Areas of Removable Surface Contamination ML17252B4571975-11-17017 November 1975 Letter Confirming a Conversation Concerning Quarterly Closure Timing of IC Main Steam Isolation Valve in Which the Closure Time Was Found at 2.7 Seconds ML17252B4581975-11-0404 November 1975 Letter Confirming a Conversation Concerning Discovery of High Level in the Torus While Running a HPCI Surveillance Check ML17252A4461975-07-31031 July 1975 Incident Notification Concerning Location of Broken Tack Welds on Jet Pump Restrainer Clamp Bolt Keepers During Tv Camera Examination of Unit 3 Jet Pumps - Dresden Unit 3 ML17252A9121975-04-25025 April 1975 Letter Confirming a 04/25/1975 Conversation Concerning Excessive Leakage Through Torus to Drywell Vacuum Breaker 3-1601-32B During Refuel Outage Local Leak Testing - Dresden Unit 3 ML17252A9131975-04-23023 April 1975 Letter Confirming a 04/23/1975 Conversation Concerning Failure of Feedwater Check Valves, 3-220-58A and 62A, and 3A Feedwater Line to Pass Local Leak Rate Test During Refuel Outage Surveillance - Dresden Unit 3 ML17252A7871975-03-19019 March 1975 Note to Confirm a Conversation Concerning Routine Main Steamline High Radiation Monitor Surveillance in Which the a and B Monitors Were Found to Have Set Points in Excess of Technical Specification Values - Dresden Unit 3 ML17252A7891975-03-19019 March 1975 Note to Confirm a Conversation Concerning Routine Main Steamline High Radiation Monitor Surveillance in Which the a and B Monitors Were Found to Have Set Points Exceeding the Techspec Value of 3 Times Background - Dresden Unit 3 ML17252A8241975-02-18018 February 1975 Note to Confirm a Conversation Concerning Discovery of a Leaking Containment Inerting Isolation Valve A03-1601-21 During Local Leak Rate Testing - Dresden Unit 3 ML17252A8251975-02-18018 February 1975 Note Confirming a Conversation Concerning Failure of Bergen Patterson Piping Restraint Number 19 on the Unit 3 HPCI Main Steam Line in the Dry-Well - Dresden Unit 3 ML17252B0291975-02-10010 February 1975 Letter Confirming a 02/10/1975 Conversation Concerning a Leak in a 3/4 Inch Vent Line at Weld on 3C Reactor Feed Pump Casing - Dresden Unit 3 ML17252A8231975-02-10010 February 1975 Note to Confirm a Conversation Concerning a Leak in a 3/4 Inch Vent Line at a Well on 3C Reactor Feed Pump Casing - Dresden Unit 3 ML17252A8371975-01-0707 January 1975 Note Confirming a Conversation Concerning a Xenon Transient Experienced on Unit 3 During a Control Rod Pattern Alteration - Dresden Unit 3 ML17252B0281975-01-0606 January 1975 Letter Confirming a 01/06/1975 Conversation Concerning Excess Chloride Content in Reactor Coolant Water During an Extended Reactor Cleanup System Maintenance Outage - Dresden Unit 3 ML17252A8321975-01-0606 January 1975 Note to Confirm a Conversation Concerning Excess Chloride Content in Unit 3 Reactor Coolant Water During a Extended Reactor Cleanup System Maintenance Outage - Dresden Unit 3 ML17252A4841974-12-0606 December 1974 Letter Confirming a 12/02/1974 Conversation Concerning the Discovery of Minor Leaks on the Minimum Flow Lines for 3A and 3B Reactor Feed Pumps - Dresden Unit 3 ML17252A4911974-10-23023 October 1974 Letter Confirming a 08/28/1974 Conversation Concerning a Failure to Maintain the 3A Core Spray Discharge Header in a Filled Condition - Dresden Unit 3 ML17252A4951974-10-0404 October 1974 Letter Confirming a 10/04/1974 Conversation Concerning the Discovery of DPI83-2352 with a Setpoint Greater than the Technical Specification ML17252A4971974-09-30030 September 1974 Letter Confirming a 09/30/1974 Conversation Concerning Discovery of Lits 3-263-72A and the Set Points Exceeding Technical Specifications ML17252A5001974-09-24024 September 1974 Letter Confirming a 09/24/1974 Conversation Concerning a Through Wall Crack Discovered on Torus Purge Inlet Line 3-8506-18 - Dresden Unit 3 ML17252A5011974-09-24024 September 1974 Letter Confirming a 09/21/1974 Conversation Concerning a Minor Leak from Feed Water Pressure Tap 3241-12A - Dresden Unit 3 ML17252A5051974-09-0909 September 1974 Letter Confirming a 09/09/1974 Conversation Concerning Failure of E Tip Valve to Close - Dresden Unit 3 ML17252B0311974-08-28028 August 1974 Letter Confirming a 08/23/1974 Conversation Concerning a Failure to Maintain the 3A Core Spray Discharge Header in a Filled Condition as Required by Technical Specifications - Dresden Unit 3 ML17252A5071974-08-14014 August 1974 Letter Confirming a 08/08/1974 Conversation Concerning a Failure of the Solenoid Operated Isolation Valve Associated with the 3B Traversing Encore Probe to Close - Dresden Unit 3 ML17252A5081974-08-0606 August 1974 Letter Confirming a 07/26/1974 Conversation Concerning Failure of the Seat Material of the Air Operated Primary Containment Isolation Valve A03-1601-22 - Dresden Unit 3 ML17252A5111974-07-29029 July 1974 Letter Confirming a 07/29/1974 Conversation Concerning Failure of the Seat Material of Air Operated Isolation Valve AO-3-1601-21 - Dresden Unit 3 ML17252A5121974-07-29029 July 1974 Letter Confirming a 07/26/1974 Conversation Concerning the Failure of the Seat Material of Air Operated Primary Containment Valve A03-1601-22 - Dresden Unit 3 ML17252A5151974-07-23023 July 1974 Letter Confirming a 07/19/1974 Conversation Concerning the Discovery of HPCI High Steam Flow Isolation Switch DPIS 3-2352 to Be Out of Flex - Dresden Unit 3 ML17252A5161974-07-19019 July 1974 Letter Confirming a 07/19/1974 Conversation Concerning Discovery of HPCI High Steam Flow Isolation Switch DPIS 3-2352 to Be Out of Flex - Dresden Unit 3 ML17252A5171974-07-16016 July 1974 Letter Confirming a 07/16/1974 Conversation Concerning the Failure to Reach the Required Containment Oxygen Concentration of 4 Percent within 24 Hours of Placing Mode Switch in Run Position - Dresden Unit 3 ML17252A5271974-07-0505 July 1974 Letter Confirming a 05/24/1974 Conversation Concerning the Discovery of a Set Point Drift of L.I.T.S. 3-263-72A Beyond the Technical Specification - Dresden Unit 3 ML17252A5261974-06-24024 June 1974 Letter Confirming a 06/24/1974 Conversation Concerning a Failure of the Air Supply to the Feed Water Regulating Valve on 06/23/1974 - Dresden Unit 3 ML17252A5291974-06-24024 June 1974 Letter Confirming a 06/24/1974 Conversation Concerning a Failure of the Air Supply to the Feed Water Regulating Valve on 06/23/1974 - Dresden Unit 3 ML17252A5251974-06-17017 June 1974 Letter Confirming a 06/17/1974 Conversation Concerning the Failure of Main Steam Drain Valve M03-220-2 to Operate Properly on 05/22/1974 - Dresden Unit 3 ML17252A5361974-06-17017 June 1974 Letter Confirming a 06/17/1974 Conversation Concerning a Failure of Main Steam Valve M03-220-2 to Operate on 05/22/1974 - Dresden Unit 3 ML17252A5241974-06-12012 June 1974 Letter Confirming a 06/12/1974 Conversation Concerning the Discovery of 2 Reactor High Pressure Scram Switches (PS-3-263-55A and C) with Set Points Above the Technical Specification Limit - Dresden Unit 3 ML17252A5231974-06-11011 June 1974 Letter Confirming a 06/11/1974 Conversation Concerning a Small Leak in Line 3-3037B - Dresden Unit 3 ML17252A5401974-06-11011 June 1974 Letter Confirming a 06/11/1974 Conversation Concerning a Small Leak in Line 3-3037B - Dresden Unit 3 ML17252B0321974-06-10010 June 1974 Letter Confirming a 06/10/1974 Conversation Concerning a Failure of a Three Quarter Inch Nipple on Reactor Feed Pump Dispatch Line 3-3201-24 - Dresden Unit 3 2017-09-09 Category:Verbal Comm MONTHYEARML17252B4162017-09-0909 September 2017
[Table view]Letter Confirming a Conversation Concerning the Report of an Empty Spent Fuel Shipping Cask Which Had Some Areas of Removable Surface Contamination ML17252B4142017-09-0909 September 2017 Letter Confirming a Conversation Concerning the Failure of HPCI Valve Mo 2-2301-8 During a Maintenance Outage and the Discovery of a Broken Stem ML0528500652005-10-24024 October 2005 Minutes of Conference Call Regarding Dresden MSSV Setpoint Tolerance (Response to License Condition 4 from July 30, 2004 Amendment) ML0331002702002-08-19019 August 2002 Note to Telephone Conversation - Robert O'Connell - NMSS-2002-A-0002 ML0331002432002-08-0707 August 2002 Note to Telephone Conversation - Robert O'Connell - NMSS-2002-A-0002 ML0331001982002-05-0808 May 2002 Noie to Telephone Conversation - Robert O'Connell - NMSS-2002-A-0002 ML0331001842002-05-0707 May 2002 Note to Telephone Conversation - Robert O'Connell - NMSS-2002-A-0002 ML0331001972002-05-0707 May 2002 Note to Telephone Conversation - Robert O'Connell - NMSS-2002-A-0002 ML0331001732002-04-25025 April 2002 Note to Telephone Conversation - Robert O'Connell - NMSS 2002-A-0002 ML17252B4171976-12-0606 December 1976 Letter Confirming a 12/06/1976 Conversation Concerning the Receipt of an Empty Spent Fuel Shipping Cask Which Had Some Areas of Removeable Surface Contamination ML17252B4181976-12-0303 December 1976 Letter Confirming a Conversation Concerning Information Received That Indicates the R.W.M. Should Remain in Service or a Qualified Person Must Verify All Control Rod Movement Through 20% Power ML17252B4191976-12-0202 December 1976 Letter Confirming a 12/02/1976 Conversation Concerning Receipt of an Empty Spent Fuel Shipping Cask from GE Morris Operation Which Had Some Areas of Removable Surface Contamination ML17252B4571975-11-17017 November 1975 Letter Confirming a Conversation Concerning Quarterly Closure Timing of IC Main Steam Isolation Valve in Which the Closure Time Was Found at 2.7 Seconds ML17252B4581975-11-0404 November 1975 Letter Confirming a Conversation Concerning Discovery of High Level in the Torus While Running a HPCI Surveillance Check ML17252A4461975-07-31031 July 1975 Incident Notification Concerning Location of Broken Tack Welds on Jet Pump Restrainer Clamp Bolt Keepers During Tv Camera Examination of Unit 3 Jet Pumps - Dresden Unit 3 ML17252A9121975-04-25025 April 1975 Letter Confirming a 04/25/1975 Conversation Concerning Excessive Leakage Through Torus to Drywell Vacuum Breaker 3-1601-32B During Refuel Outage Local Leak Testing - Dresden Unit 3 ML17252A9131975-04-23023 April 1975 Letter Confirming a 04/23/1975 Conversation Concerning Failure of Feedwater Check Valves, 3-220-58A and 62A, and 3A Feedwater Line to Pass Local Leak Rate Test During Refuel Outage Surveillance - Dresden Unit 3 ML17252A7871975-03-19019 March 1975 Note to Confirm a Conversation Concerning Routine Main Steamline High Radiation Monitor Surveillance in Which the a and B Monitors Were Found to Have Set Points in Excess of Technical Specification Values - Dresden Unit 3 ML17252A7891975-03-19019 March 1975 Note to Confirm a Conversation Concerning Routine Main Steamline High Radiation Monitor Surveillance in Which the a and B Monitors Were Found to Have Set Points Exceeding the Techspec Value of 3 Times Background - Dresden Unit 3 ML17252A8241975-02-18018 February 1975 Note to Confirm a Conversation Concerning Discovery of a Leaking Containment Inerting Isolation Valve A03-1601-21 During Local Leak Rate Testing - Dresden Unit 3 ML17252A8251975-02-18018 February 1975 Note Confirming a Conversation Concerning Failure of Bergen Patterson Piping Restraint Number 19 on the Unit 3 HPCI Main Steam Line in the Dry-Well - Dresden Unit 3 ML17252B0291975-02-10010 February 1975 Letter Confirming a 02/10/1975 Conversation Concerning a Leak in a 3/4 Inch Vent Line at Weld on 3C Reactor Feed Pump Casing - Dresden Unit 3 ML17252A8231975-02-10010 February 1975 Note to Confirm a Conversation Concerning a Leak in a 3/4 Inch Vent Line at a Well on 3C Reactor Feed Pump Casing - Dresden Unit 3 ML17252A8371975-01-0707 January 1975 Note Confirming a Conversation Concerning a Xenon Transient Experienced on Unit 3 During a Control Rod Pattern Alteration - Dresden Unit 3 ML17252B0281975-01-0606 January 1975 Letter Confirming a 01/06/1975 Conversation Concerning Excess Chloride Content in Reactor Coolant Water During an Extended Reactor Cleanup System Maintenance Outage - Dresden Unit 3 ML17252A8321975-01-0606 January 1975 Note to Confirm a Conversation Concerning Excess Chloride Content in Unit 3 Reactor Coolant Water During a Extended Reactor Cleanup System Maintenance Outage - Dresden Unit 3 ML17252A4841974-12-0606 December 1974 Letter Confirming a 12/02/1974 Conversation Concerning the Discovery of Minor Leaks on the Minimum Flow Lines for 3A and 3B Reactor Feed Pumps - Dresden Unit 3 ML17252A4911974-10-23023 October 1974 Letter Confirming a 08/28/1974 Conversation Concerning a Failure to Maintain the 3A Core Spray Discharge Header in a Filled Condition - Dresden Unit 3 ML17252A4951974-10-0404 October 1974 Letter Confirming a 10/04/1974 Conversation Concerning the Discovery of DPI83-2352 with a Setpoint Greater than the Technical Specification ML17252A4971974-09-30030 September 1974 Letter Confirming a 09/30/1974 Conversation Concerning Discovery of Lits 3-263-72A and the Set Points Exceeding Technical Specifications ML17252A5001974-09-24024 September 1974 Letter Confirming a 09/24/1974 Conversation Concerning a Through Wall Crack Discovered on Torus Purge Inlet Line 3-8506-18 - Dresden Unit 3 ML17252A5011974-09-24024 September 1974 Letter Confirming a 09/21/1974 Conversation Concerning a Minor Leak from Feed Water Pressure Tap 3241-12A - Dresden Unit 3 ML17252A5051974-09-0909 September 1974 Letter Confirming a 09/09/1974 Conversation Concerning Failure of E Tip Valve to Close - Dresden Unit 3 ML17252B0311974-08-28028 August 1974 Letter Confirming a 08/23/1974 Conversation Concerning a Failure to Maintain the 3A Core Spray Discharge Header in a Filled Condition as Required by Technical Specifications - Dresden Unit 3 ML17252A5071974-08-14014 August 1974 Letter Confirming a 08/08/1974 Conversation Concerning a Failure of the Solenoid Operated Isolation Valve Associated with the 3B Traversing Encore Probe to Close - Dresden Unit 3 ML17252A5081974-08-0606 August 1974 Letter Confirming a 07/26/1974 Conversation Concerning Failure of the Seat Material of the Air Operated Primary Containment Isolation Valve A03-1601-22 - Dresden Unit 3 ML17252A5111974-07-29029 July 1974 Letter Confirming a 07/29/1974 Conversation Concerning Failure of the Seat Material of Air Operated Isolation Valve AO-3-1601-21 - Dresden Unit 3 ML17252A5121974-07-29029 July 1974 Letter Confirming a 07/26/1974 Conversation Concerning the Failure of the Seat Material of Air Operated Primary Containment Valve A03-1601-22 - Dresden Unit 3 ML17252A5151974-07-23023 July 1974 Letter Confirming a 07/19/1974 Conversation Concerning the Discovery of HPCI High Steam Flow Isolation Switch DPIS 3-2352 to Be Out of Flex - Dresden Unit 3 ML17252A5161974-07-19019 July 1974 Letter Confirming a 07/19/1974 Conversation Concerning Discovery of HPCI High Steam Flow Isolation Switch DPIS 3-2352 to Be Out of Flex - Dresden Unit 3 ML17252A5171974-07-16016 July 1974 Letter Confirming a 07/16/1974 Conversation Concerning the Failure to Reach the Required Containment Oxygen Concentration of 4 Percent within 24 Hours of Placing Mode Switch in Run Position - Dresden Unit 3 ML17252A5271974-07-0505 July 1974 Letter Confirming a 05/24/1974 Conversation Concerning the Discovery of a Set Point Drift of L.I.T.S. 3-263-72A Beyond the Technical Specification - Dresden Unit 3 ML17252A5261974-06-24024 June 1974 Letter Confirming a 06/24/1974 Conversation Concerning a Failure of the Air Supply to the Feed Water Regulating Valve on 06/23/1974 - Dresden Unit 3 ML17252A5291974-06-24024 June 1974 Letter Confirming a 06/24/1974 Conversation Concerning a Failure of the Air Supply to the Feed Water Regulating Valve on 06/23/1974 - Dresden Unit 3 ML17252A5251974-06-17017 June 1974 Letter Confirming a 06/17/1974 Conversation Concerning the Failure of Main Steam Drain Valve M03-220-2 to Operate Properly on 05/22/1974 - Dresden Unit 3 ML17252A5361974-06-17017 June 1974 Letter Confirming a 06/17/1974 Conversation Concerning a Failure of Main Steam Valve M03-220-2 to Operate on 05/22/1974 - Dresden Unit 3 ML17252A5241974-06-12012 June 1974 Letter Confirming a 06/12/1974 Conversation Concerning the Discovery of 2 Reactor High Pressure Scram Switches (PS-3-263-55A and C) with Set Points Above the Technical Specification Limit - Dresden Unit 3 ML17252A5231974-06-11011 June 1974 Letter Confirming a 06/11/1974 Conversation Concerning a Small Leak in Line 3-3037B - Dresden Unit 3 ML17252A5401974-06-11011 June 1974 Letter Confirming a 06/11/1974 Conversation Concerning a Small Leak in Line 3-3037B - Dresden Unit 3 ML17252B0321974-06-10010 June 1974 Letter Confirming a 06/10/1974 Conversation Concerning a Failure of a Three Quarter Inch Nipple on Reactor Feed Pump Dispatch Line 3-3201-24 - Dresden Unit 3 2017-09-09 |
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8159424449 TOBN MORRIS IL 89 02tf9) 054 7P EST 'i!
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PMS JA~1ES G !if;.E.PL_ER, REGIONAL DIRECTOR, DIREC~ORATE OF REGULATORY OPERATION, REG ION 3 US A*~oMIC ENERGY COMMISSI~N, WUX 799 ROOSEVELT RD l!
I' GLEN ELLYN IL 60137 '.1
SUBJECT:
DPR-25 DRESDEN NUCLEAR POv.'ER STATION !\UNIT 3.
II THIS. WILL CONFIRM A CONVERSATION WITH PHIL JOHNSON OF YOUR OFFICE AT
~..
11 1600 HOURS THIS DATE CONCERNING A LEAK IN A 3/;f: INCH VENT LINE AT A
. . :* r WELL ON 3C REACTOR FEED PUMP CASlNG. THE .
FAILURE MODE. APPEARS TO BE
~
DUE TO VIBRATION, AND REPAIR IS IN PROGRESS. L~AKAGE WAS MINOR AND
. . ' . . . !j J r
WAS CONTAINED IN NORMAL BUILDING FLOOR DRAINS.~AS THIS IS A SYSTEM - L.
BOUNDARY DESIG~ED TO CONTAIN RADIOACTIVE MATERtALS THIS NOTIFICATION WILL. BE FOLLOWED BY A 10 DAY REPORTe ~
SF-1201 {RS-69) ::
II,,
B B STEPHENSON SUPERINTENDENT DRESDEN NUCLEA~ POWER STATION COMMONWEALTH EDISON CO RRi MORRIS IL 60450 NNNN
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.r.1:3 1 3 :1975
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