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Category:LICENSEE EVENT REPORT (SEE ALSO AO RO)
MONTHYEAR05000254/LER-1993-0131993-08-27027 August 1993 LER 93-013-00:on 930729,identified Deviation from TS & Reg Guide 1.52 Requirements for Methyl Iodide Testing of Charcoal Sample Canisters.Caused by Failure to Implement Proper Canister Testing.Canisters Tested by Nucon 05000254/LER-1993-0121993-08-24024 August 1993 LER 93-012-00:on 930726,light Socket Shorted Out When Operator Reset HPCI Logic Power.Caused by Short Circuit in Light Socket.Light Socket & Blown Fuses replaced.W/930824 Ltr 05000254/LER-1993-0101993-08-19019 August 1993 LER 93-010-00:on 930720,HPCI Declared Inoperable & HPCI Outage Rept Qcos 2300-2 Initiated Because IST Flow Rate Fell in IST Required Action Range Due to New Procedure. Surveillance Procedure Will Be revised.W/930819 Ltr 05000254/LER-1993-0111993-08-18018 August 1993 LER 93-011-00:on 930721,discovered That 4kV Breaker 68 Feeding CS 1B Motor Pump Open & Discharged,Resulting in CS 1B Being Declared Inoperable.Wr Written to Investigate & repair.W/930813 Ltr 05000254/LER-1993-0091993-08-13013 August 1993 LER 93-009-00:on 930714,SBGT Methyl Iodide Test Failed Due to Age of Charcoal Combined W/Stringent Test Criteria. Replaced Charcoal Absorber in Both Trains of Sbgt. W/930806 Ltr 05000254/LER-1993-0081993-08-11011 August 1993 LER 93-008-00:on 930709,reactor Bldg Ventilation Radiation Monitor Setpoints Set non-conservatively Four Times in Five Yrs.Caused by Instrument Maint Program Error. New Computer Program developed.W/930805 Ltr 05000265/LER-1988-006, Errata to LER 88-006-02:on 880404,station Notified That Eleven Flued Head Anchors Did Not Meet Design Requirements. Caused by Misinterpretation of Scope & Design Structures.Mod Initiated to Revise Structure1992-06-0404 June 1992 Errata to LER 88-006-02:on 880404,station Notified That Eleven Flued Head Anchors Did Not Meet Design Requirements. Caused by Misinterpretation of Scope & Design Structures.Mod Initiated to Revise Structure 05000254/LER-1990-0131990-07-24024 July 1990 LER 90-013-00:on 900626,annunciators on Both Units & Reactor Recirculation Loop Sample Valve Closed.Caused by Actuation of Primary Containment Isolation Valve When Lightning Struck 345 Kv Line.Valve reopened.W/900724 Ltr 05000254/LER-1988-001, Sanitized Version of LER 88-001-00:on 880114,records Review Found Two Apparent Overexposures of Contractor Personnel During Fourth Quarter 1980.Caused by Inaccurate Secondary &/ or Primary Dosimetry.Dosimetry Sys Upgraded1988-01-28028 January 1988 Sanitized Version of LER 88-001-00:on 880114,records Review Found Two Apparent Overexposures of Contractor Personnel During Fourth Quarter 1980.Caused by Inaccurate Secondary &/ or Primary Dosimetry.Dosimetry Sys Upgraded ML20203L0281986-04-25025 April 1986 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 05000254/LER-1984-018, :on 840922 & 24,reactor Bldg Fuel Pool Channel B Area Radiation Monitor 1705-16B Spiked High, Tripping Ventilation.Cause Unknown.Corrective Actions for Both Events Will Be Documented in Suppl to LER 84-0181984-10-11011 October 1984
- on 840922 & 24,reactor Bldg Fuel Pool Channel B Area Radiation Monitor 1705-16B Spiked High, Tripping Ventilation.Cause Unknown.Corrective Actions for Both Events Will Be Documented in Suppl to LER 84-018
05000265/LER-1983-021, Revised LER 83-021/01T-5:on 831028,ultrasonic Exams of Large Bore Stainless Steel Pipe Welds Identified 11 Welds W/Crack Indications.Caused by Intergranular Stress Corrosion Cracking.Weld Overlay Performed1984-02-28028 February 1984 Revised LER 83-021/01T-5:on 831028,ultrasonic Exams of Large Bore Stainless Steel Pipe Welds Identified 11 Welds W/Crack Indications.Caused by Intergranular Stress Corrosion Cracking.Weld Overlay Performed 05000265/LER-1983-018, Revised LER 83-018/01T-1:on 831011,discovered 1-1/4 Inch long,20% through-wall Linear Indication in Weld 12S-S27. Caused by Intergranular Stress Corrosion Cracking.New Welds & Elbow Installed1984-02-0202 February 1984 Revised LER 83-018/01T-1:on 831011,discovered 1-1/4 Inch long,20% through-wall Linear Indication in Weld 12S-S27. Caused by Intergranular Stress Corrosion Cracking.New Welds & Elbow Installed 05000265/LER-1983-020, Revised LER 83-020/01T-1:on 831028,weld 02B-S9,22-inch Pipe to Cap,Weld 02BS-S12,28-inch Elbow to Pipe & Weld 02BS-F14, 28-inch Pipe to Elbow Weld Had Circumferential Linear Indications1983-12-0909 December 1983 Revised LER 83-020/01T-1:on 831028,weld 02B-S9,22-inch Pipe to Cap,Weld 02BS-S12,28-inch Elbow to Pipe & Weld 02BS-F14, 28-inch Pipe to Elbow Weld Had Circumferential Linear Indications 05000265/LER-1982-018, Supplemental LER 82-018/03L-1:on 821006,emergency Diesel Generator Tripped on High Temp After Loading.Caused by Fouling of Diesel Generator Cooling Water Sys.Both HX Replaced1982-12-0101 December 1982 Supplemental LER 82-018/03L-1:on 821006,emergency Diesel Generator Tripped on High Temp After Loading.Caused by Fouling of Diesel Generator Cooling Water Sys.Both HX Replaced 05000254/LER-1982-022, Supplemental LER 82-022/03L-1:on 820816,maint Outage for 1/2B Diesel Fire Pump Exceeded 7-day Limit.Cause Not Stated. Diesel Pump Wear Rings Replaced1982-10-0707 October 1982 Supplemental LER 82-022/03L-1:on 820816,maint Outage for 1/2B Diesel Fire Pump Exceeded 7-day Limit.Cause Not Stated. Diesel Pump Wear Rings Replaced ML20150E1741978-11-20020 November 1978 /03L-0 on 781026:dual Position Indication Was Received for Supression Chamber to Drywell Vacuum Breaker, Valve 1-1601-33E.Caused by Position Indication Problem ML20062E6521978-11-15015 November 1978 /03L-0 on 781025:smoke Detectors Were Removed from Svc in Cable Spreading Room,Elec Equip Room & Control Room for Installation of New Fire Detection/Suppression Sys ML20062D5871978-10-25025 October 1978 /03L-1 on 780420:during Routine Hydraulic Snubber Surveillance Inspec,Snubber Mark 149 Was Found Inoper Due to Empty Fluid Reservoir & Mark 144 Was Found W/Missing Cotter Pin,Due to Component Failure ML20062D5161978-10-19019 October 1978 /03L-0 on 780920:A RHR Room Watertight Door Found Open.Caused by Contractor Personnel Ignorance. Personnel Admonished to Heed Procedures at All Times ML20084Q0021976-12-30030 December 1976 LER 017/03L-0:on 761203,Grinnell Corp Snubber 4755 on RCIC Steam Supply Piping Found to Have Empty Oil Reservoir. Caused by Leakage Through Reservoir End Gap Gaskets.Snubber Repaired & Reservoir Refilled w/oil.W/761230 Forwarding Ltr 05000265/LER-1976-012, Updated LER 76-012/03L-1 Correcting Event Type,Category & Rept type.W/761001 Forwarding Ltr1976-10-0101 October 1976 Updated LER 76-012/03L-1 Correcting Event Type,Category & Rept type.W/761001 Forwarding Ltr ML20084P4791976-08-25025 August 1976 LER 023/03L-0:on 760727,diesel Generator 1/2 Out of Svc for Monthly Insp for 55 Minutes Longer than Tech Spec Limit of 1.5 H.Caused by Maint Personnel Not Being Aware of Time Limit.Procedure to Be Changed ML20084Q0281976-05-27027 May 1976 LER 017/03L-0:on 760427,while Performing Low Reactor Water Level Functional Test,Level Indicating Switch LIS-1-263-58A Tripped,Exceeding Tech Specs.Caused by Instrument Drift. Switch recalibr.W/760527 Forwarding Ltr ML20084Q0511976-04-30030 April 1976 L-0:on 760427,while Performing MSIV Surveillance, Duel Indication Received for Valves AO 1-203-1B & AO 1-203-1D.Caused by Switches Being Out of Alignment.Minor Air Leak repaired.W/760430 Forwarding Ltr 05000254/LER-1976-002, Updated LER 76-002/03L Re Excessive Leakage from Double Gasketed Seal X-4.Initially Reported on 760202.Caused by Equipment Failure & Insufficient Compression.Hatch Bolts Tightened1976-03-0303 March 1976 Updated LER 76-002/03L Re Excessive Leakage from Double Gasketed Seal X-4.Initially Reported on 760202.Caused by Equipment Failure & Insufficient Compression.Hatch Bolts Tightened 1993-08-27
[Table view] Category:TEXT-SAFETY REPORT
MONTHYEARML20217A9931999-09-30030 September 1999 NRC Regulatory Assessment & Oversight Pilot Program, Performance Indicator Data SVP-99-204, Monthly Operating Repts for Sept 1999 for Quad Cities Nuclear Power Station,Units 1 & 2.With1999-09-30030 September 1999 Monthly Operating Repts for Sept 1999 for Quad Cities Nuclear Power Station,Units 1 & 2.With ML20217A1691999-09-22022 September 1999 Part 21 Rept Re Engine Sys,Inc Controllers,Manufactured Between Dec 1997 & May 1999,that May Have Questionable Soldering Workmanship.Caused by Inadequate Personnel Training.Sent Rept to All Nuclear Customers ML20212J0501999-09-21021 September 1999 Safety Evaluation Re Licensee Implementation Program to Resolve USI A-46 at Plant,Per GL 87-02,Suppl 1 SVP-99-179, Monthly Operating Repts for Aug 1999 for Quad Cities Nuclear Power Station,Units 1 & 2.With1999-08-31031 August 1999 Monthly Operating Repts for Aug 1999 for Quad Cities Nuclear Power Station,Units 1 & 2.With ML20210L8661999-08-0202 August 1999 Safety Evaluation Accepting License 60-day Response to GL 96-05, Periodic Verification of Design-Basis Capability of Safety-Related Movs SVP-99-155, Monthly Operating Repts for July 1999 for Quad Cities Nuclear Power Station,Units 1 & 2.With1999-07-31031 July 1999 Monthly Operating Repts for July 1999 for Quad Cities Nuclear Power Station,Units 1 & 2.With SVP-99-148, Monthly Operating Repts for June 1999 for Quad Cities Nuclear Power Station,Units 1 & 2.With1999-06-30030 June 1999 Monthly Operating Repts for June 1999 for Quad Cities Nuclear Power Station,Units 1 & 2.With ML20196H8621999-06-30030 June 1999 NRC Regulatory Assessment & Oversight Pilot Program, Performance Indicator Data, June 1999 Rept ML20195K1481999-06-16016 June 1999 Safety Evaluation Authorizing Relief Request RV-23A for Duration of Current 10 Yr IST Interval on Basis That Compliance with Code Requirements Would Result in Hardship Without Compensating Increase in Level of Quality & Safety SVP-99-123, Monthly Operating Repts for May 1999 for Quad Cities Nuclear Power Station,Units 1 & 2.With1999-05-31031 May 1999 Monthly Operating Repts for May 1999 for Quad Cities Nuclear Power Station,Units 1 & 2.With ML20195B2591999-05-19019 May 1999 Rev 66a to CE-1-A,consisting of Proposed Changes to QAP for Dnps,Qcs,Znps,Lcs,Byron & Braidwood Stations SVP-99-104, Monthly Operating Repts for Apr 1999 for Quad Cities Nuclear Power Station,Units 1 & 2.With1999-04-30030 April 1999 Monthly Operating Repts for Apr 1999 for Quad Cities Nuclear Power Station,Units 1 & 2.With SVP-99-102, Summary Rept of Changes,Tests & Experiments Completed, Covering Period 990201-0430. with1999-04-30030 April 1999 Summary Rept of Changes,Tests & Experiments Completed, Covering Period 990201-0430. with ML20205Q5291999-04-16016 April 1999 SER Concluding That Quad Cities Nuclear Power Station,Unit 1,can Be Safely Operated for Next Fuel Cycle with Weld O2BS-F4 in Current Condition Because Structural Integrity of Weld Will Be Maintained ML20205J6011999-04-0707 April 1999 Safety Evaluation Accepting Proposed Merger of Calenergy Co, Inc & Midamerican Holdings Co for Quad Cities Nuclear Power Station,Units 1 & 2 SVP-99-071, Monthly Operating Repts for Mar 1999 for Quad Cities Nuclear Power Station,Units 1 & 2.With1999-03-31031 March 1999 Monthly Operating Repts for Mar 1999 for Quad Cities Nuclear Power Station,Units 1 & 2.With ML20205C5671999-03-19019 March 1999 Simulator Four-Yr Certification Rept ML20207D2341999-03-0101 March 1999 Post Outage (90 Day) Summary Rept, for ISI Exams & Repair/Replacement Activities Conducted 981207-1205 ML20204B1571999-02-28028 February 1999 Monthly Operating Repts for Feb 1999 for Quad Cities,Units 1 & 2.With SVP-99-021, Quarterly Summary SER of Changes,Tests & Experiments Completed, Covering Period of 981101-990131,IAW 10CFR50.59 & 10CFR50.71(e).With1999-01-31031 January 1999 Quarterly Summary SER of Changes,Tests & Experiments Completed, Covering Period of 981101-990131,IAW 10CFR50.59 & 10CFR50.71(e).With ML20205D1311998-12-31031 December 1998 1998 Decommissioning Funding Status Rept for Yr Ending 981231 for Quad Cities Nuclear Power Station,Units 1 & 2 ML20205M7061998-12-31031 December 1998 Unicom Corp 1998 Summary Annual Rept. with SVP-99-007, Monthly Operating Repts for Dec 1998 for Quad Cities Nuclear Power Station,Units 1 & 2,IAW GL 97-02 & TS 6.9.With1998-12-31031 December 1998 Monthly Operating Repts for Dec 1998 for Quad Cities Nuclear Power Station,Units 1 & 2,IAW GL 97-02 & TS 6.9.With ML20196C8391998-11-30030 November 1998 Rev 0 to GE-NE-B13-01980-030-2, Assessment of Crack Growth Rates Applicable to Induction Heating Stress Improvement (IHSI) Recirculation Piping in Quad Cities Unit 1 SVP-98-364, Monthly Operating Repts for Nov 1998 for Quad Cities Nuclear Power Station,Units 1 & 2.With1998-11-30030 November 1998 Monthly Operating Repts for Nov 1998 for Quad Cities Nuclear Power Station,Units 1 & 2.With ML20196G1241998-11-30030 November 1998 COLR for Quad Cities Unit 1 Cycle 16 ML20196D9651998-11-30030 November 1998 Safety Evaluation Supporting Relief Requests CR-21 & CR-24, Respectively.Relief Request CR-23,proposed Alternative May Be Authorized,Per 10CFR50.55a & Relief Request CR-22 Was Withdrawn by Licensee ML20196C8731998-11-30030 November 1998 Rev 0 to GE-NE-B13-01980-30-1, Fracture Mechanics Evaluation on Observed Indications at Two Welds in Recirculation Piping of Quad Cities,Unit 1 Station ML20196A9761998-11-20020 November 1998 Safety Evaluation Re Licensee 180-day Response to GL 95-07, Thermal Binding of Safety-Related Power-operated Gate Valves ML20196A4191998-11-19019 November 1998 Safety Evaluation Accepting QA TR CE-1-A,Rev 66 Re Changes in Independent & Onsite Review Organization by Creating NSRB SVP-98-346, Monthly Operating Repts for Oct 1998 for Quad Cities Nuclear Power Station,Units 1 & 2.With1998-10-31031 October 1998 Monthly Operating Repts for Oct 1998 for Quad Cities Nuclear Power Station,Units 1 & 2.With SVP-98-358, Summary Rept of Changes,Tests & Experiments Completed, Including SEs Covering Period on 980716-1031.With1998-10-31031 October 1998 Summary Rept of Changes,Tests & Experiments Completed, Including SEs Covering Period on 980716-1031.With SVP-98-326, Monthly Operating Repts for Sept 1998 for Quad Cities Nuclear Power Station,Units 1 & 2.With1998-09-30030 September 1998 Monthly Operating Repts for Sept 1998 for Quad Cities Nuclear Power Station,Units 1 & 2.With ML20153D0191998-09-18018 September 1998 Part 21 Rept Re Defect in Gap Conductance Analyses for co- Resident BWR Fuel.Initially Reported on 980917.Corrective Analyses Performed Demonstrating That Current Operating Limits Bounding from BOC to Cycle Exposure of 8 Gwd/Mtu ML20153C6771998-09-17017 September 1998 Part 21 Rept Re Defect Relative to MCPR Operating Limits as Impacted by Gap Conductance of co-resident BWR Fuel at Facilities.Operating Limit for LaSalle Unit 2 & Quad Cities Unit 2 Will Be Revised as Listed ML20151T2711998-09-0404 September 1998 Safety Evaluation Accepting Licensee Response to NRC Bulletin 95-002 ML20151Y7261998-08-31031 August 1998 Monthly Operating Repts for Aug 1998 for Quad Cities Nuclear Power Station ML20237E2331998-08-21021 August 1998 Revised Pages of Section 20 of Rev 66 to CE-1-A, QA Topical Rept ML20151Y7301998-07-31031 July 1998 Revised MOR for Jul 1998 for Quad Cities Nuclear Power Station,Units 1 & 2 ML20237A6251998-07-31031 July 1998 Monthly Operating Repts for July 1998 for Quad Cities Nuclear Power Station,Unit 1 & 2 SVP-98-328, Summary Rept of Changes,Tests & Experiments Completed, Including SEs Covering Period of 971001-980715,per 10CFR50.59 & 10CFR50.71(e).With1998-07-15015 July 1998 Summary Rept of Changes,Tests & Experiments Completed, Including SEs Covering Period of 971001-980715,per 10CFR50.59 & 10CFR50.71(e).With SVP-98-249, Monthly Operating Repts for June 1998 for Quad Cities Nuclear Power Station,Units 1 & 21998-06-30030 June 1998 Monthly Operating Repts for June 1998 for Quad Cities Nuclear Power Station,Units 1 & 2 SVP-98-215, Monthly Operating Repts for May 1998 for Quad Cities Nuclear Power Station Units 1 & 21998-05-31031 May 1998 Monthly Operating Repts for May 1998 for Quad Cities Nuclear Power Station Units 1 & 2 ML20247N6281998-05-19019 May 1998 Rev 2 to COLR for Quad Cities Unit 2 Cycle 15 ML20216C0561998-04-30030 April 1998 Safe Shutdown Rept for Quad Cities Station,Units 1 & 2, Vols 1 & 2.W/22 Oversize Figures SVP-98-176, Monthly Operating Repts for Apr 1998 for Quad Cities Nuclear Power Station,Units 1 & 21998-04-30030 April 1998 Monthly Operating Repts for Apr 1998 for Quad Cities Nuclear Power Station,Units 1 & 2 ML20217D0281998-04-22022 April 1998 Part 21 Rept Re Additive Constants Used in MCPR Determination for Siemens ATRIUM-9B Fuel by Core Monitoring Sys Were Found to Be non-conservative.SPC Personnel Notified All Customers w/ATRIUM-9B Lead Test Assemblies ML20217G3951998-04-0808 April 1998 TS 3/4.8.F Snubber Functional Testing Scope Quad Cities Unit 2 TS (Safety-Related) Snubber Population 129 Snubbers SVP-98-128, Monthly Operating Repts for Mar 1998 for Quad Cities Nuclear Station Units 1 & 21998-03-31031 March 1998 Monthly Operating Repts for Mar 1998 for Quad Cities Nuclear Station Units 1 & 2 1999-09-30
[Table view] |
LER-2076-002, Updated LER 76-002/03L Re Excessive Leakage from Double Gasketed Seal X-4.Initially Reported on 760202.Caused by Equipment Failure & Insufficient Compression.Hatch Bolts Tightened |
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2542076002R00 - NRC Website |
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_1 Ouad-C Nuclear Powcr Station (j Post Offi ox 216 Corcova, lihnois 61242 Telephone 309/654-2241 NJK-76-81 1
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Re fe rence : Quad-Cities Nuclear Power Station kD,d.
Nu-Docket No. 50-254, DPR-29, Uni t One Appendix A, Section 6.6.B.2.b Enclosed please find a supplement to Reportable Occurrence Report Number R0 50-254/76-2 for Quad-Ci ties Nuclear Power Station. This report is sub-mitted to you in accordance with the requirements of Technical Specification 6.6.B.2.
Following the completion of all initial local leak rate tests pertaining to primary containment isolation valves and testable penetrations on January 30, 1976, double gasketed s2a1 X-4 (drywell head access hatch) was found to have excessive leakage.
Initial reporting of RO 50-254/76-2 was submi tted to you on February 2, 1976.
Details of the X-4 leakage are described herein. A further supplemental report regarding the details of all repairs necessary to resolve the pre-viously reported items will be sent upon thei r completion.
Very truly yours, COMMONWEALTH EDISON COMPANY QUAD-CITIES NUCLEAR POWER STATION r Pr -
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N. J. Kalivianakis Station Superintendent NJK/L FG/l k 2489 cc: G. A. Ab re ' '
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( PERSONNEL INJURIES f NUMBER CE3CRIPTON t DE 1010101 1 A/4 7 89 11 12 1 80 OFFSITE CONSEQUENCES r BE I N4 I 7 89 I k LOSS OR DAMAGE TO FACILITY 80 TYPE DESCRIPTON Da LW l- *A Ii 7 89 10 80 PUBUCITY El A I 7 89 ADDITIONAL FACTORS DE l VM 7 89 i 80 8I u.+ l 7 89 NAME b E M MC Wh PHONE: Jo9 -?,5 - 2.2.9/ (/%
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REPORT NUMBER: RO 50-254/76-2 REPORT DATE: March 3, 1976 i
, OCCURRENCE DATE: February 2,1976 FACI LITY : quad-Cities Nuclear Power Station Cordova, Illinois 61242 l lDENTIFICATION OF OCCURRENCE:
Excessive leakage measured from the Uni t One drywell head access hatch.
CONDITIONS PRIOR TO OCCURRENCE:
Unit One was in the REFUEL mode for a scheduled refueling outage.
DESCRIPTION OF OCCURRENCE:
At 2:30 p.m. on Feb ruary 2, 1976, a local leak rate test was performed on the drywell head access hatch, designated X-4. The measured leakage was 39 2 SCFH, which was in excess of the Technical Specification limit. During the performance of the test, the hatch exterior and associated fittings were tested for leakage with soap-bubble solution. No bubbles were observed
-and it was postulated that the excessive leakage was through the inner seal.
I Work Request number 375-76 was issued to repair the access hatch.
DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:
Equipment Fai lu re The apparent cause of this occurrence is designated as equipment failure.
Upon opening the hatch, maintenance personnel determined that there was insufficient compression of the Inner gasket by the inner knife edge of the hatch door. The outer gasket appeared to be in satisfactory condition.
The re fo re , it was concluded that the leakage path was out through the inner gasket seal.
l ANALYSIS OF OCCURRENCE:
Since the excessive leakage f rom the drywell head access hatch was determined to be only through the inner seal, the safety implications of- this occurrence are minimal . Primary containment was maintained through the outer seal of
- . thi s penetration. The re fo re , reactor safety and the health and safety of the public were not affected by this ' occurrence.
t CORRECTIVE ACTION:
The drywell head access hatch bolts were tightened by maintenance -personnel following closure. A subsequent leak rate test on the hatch resulted in a leakage of 17 66 SCFH, which is within the 11'm itation given by the Technical Speci ficat ions .
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FAILURE DATA:
This is the fi rst occasion whereby the drywell head access hatch on either unl t failed to meet the acceptance criteria during local leak rate testing.
t' Therefore, there is no cumulative experlence related to this occurrence.
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