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Category:LICENSEE EVENT REPORT (SEE ALSO AO RO)
MONTHYEAR05000302/LER-1997-040, Corrected Page 1 of LER 97-040-00,adding Rept Date in Block 7.On 971110,inadequate Engineering Documentation for safety- Related Large Bore Piping Analysis & Pipe Supports Noted. Caused by Personnel Error1997-12-0404 December 1997 Corrected Page 1 of LER 97-040-00,adding Rept Date in Block 7.On 971110,inadequate Engineering Documentation for safety- Related Large Bore Piping Analysis & Pipe Supports Noted. Caused by Personnel Error 05000302/LER-1997-039, Corrected Page 1 to LER 97-039-00,adding Rept Date in Block 7.On 971108,unqualified Matl Discovered Left in Reactor Bldg During Const.Caused by Personnel Error.Polystyrene Permanently Installed1997-12-0303 December 1997 Corrected Page 1 to LER 97-039-00,adding Rept Date in Block 7.On 971108,unqualified Matl Discovered Left in Reactor Bldg During Const.Caused by Personnel Error.Polystyrene Permanently Installed 3F0397-01, LER 97-S01-00:on 970130,maint Activities in Circulating Water Sys Resulted in Protected Area Breach.Caused by Failure to Identify Security Function of Plant.Armed Security Was Established1997-03-0303 March 1997 LER 97-S01-00:on 970130,maint Activities in Circulating Water Sys Resulted in Protected Area Breach.Caused by Failure to Identify Security Function of Plant.Armed Security Was Established 05000302/LER-1990-0101990-07-27027 July 1990 LER 90-010-00:on 900626,determined That Voltage Dips Caused by Sluggish Voltage Regulator Response Exceed Reg Guide 1.9 Limits.Caused by Improper Load Sequence Interval.Test Plan Being Developed for Testing Voltage regulator.W/900727 Ltr 05000302/LER-1989-013, Corrected LER 89-013-01:on 890409,when Time Delay Satisfied & Voltage Had Not Recovered,Emergency Diesel Generator Start Signal Was Initiated.Caused by Degraded Voltage on Engineered Safeguard 4,160 Volt Buses1989-07-0505 July 1989 Corrected LER 89-013-01:on 890409,when Time Delay Satisfied & Voltage Had Not Recovered,Emergency Diesel Generator Start Signal Was Initiated.Caused by Degraded Voltage on Engineered Safeguard 4,160 Volt Buses 05000302/LER-1984-001, Updated LER 84-001-01:on 840113,end Cap on Reactor Bldg Side of Spare Penetration 3531 Mistakenly Cut Off.Caused by Personnel Failure to Follow Applicable Engineering Procedures.Personnel Retrained1984-06-26026 June 1984 Updated LER 84-001-01:on 840113,end Cap on Reactor Bldg Side of Spare Penetration 3531 Mistakenly Cut Off.Caused by Personnel Failure to Follow Applicable Engineering Procedures.Personnel Retrained 05000302/LER-1983-058, Updated LER 83-058/03L-1:on 831103,while Performing Maint on 120-volt Ac Vital Bus Transfer Switch,Fuse Blew,Rendering Inverter 3A Inoperable.Caused by Personnel Inadvertently Shorting Out Lamp Base.Inverter repaired.W/840106 L1984-01-0606 January 1984 Updated LER 83-058/03L-1:on 831103,while Performing Maint on 120-volt Ac Vital Bus Transfer Switch,Fuse Blew,Rendering Inverter 3A Inoperable.Caused by Personnel Inadvertently Shorting Out Lamp Base.Inverter repaired.W/840106 Ltr 05000302/LER-1983-053, Updated LER 83-053/03L-1:on 831109,safety-related Hydraulic Snubber MSH-252 Declared Inoperable When Lack of Oil Level Indication Noted in Sightglass.Caused by Loose jam-nut on Stationary End of Snubber,Allowing rotation.W/84011984-01-0606 January 1984 Updated LER 83-053/03L-1:on 831109,safety-related Hydraulic Snubber MSH-252 Declared Inoperable When Lack of Oil Level Indication Noted in Sightglass.Caused by Loose jam-nut on Stationary End of Snubber,Allowing rotation.W/840106 Ltr 05000302/LER-1983-045, Rev 1 to LER 83-045/03X-1:on 831016,1104 & 08,175-ft Wind Speed Instrumentation & on 831028 & 1102,33-ft Wind Direction Instrumentation Discovered Inoperable.Caused by Severe Weather Damage & Component Failure1983-12-0101 December 1983 Rev 1 to LER 83-045/03X-1:on 831016,1104 & 08,175-ft Wind Speed Instrumentation & on 831028 & 1102,33-ft Wind Direction Instrumentation Discovered Inoperable.Caused by Severe Weather Damage & Component Failure 05000302/LER-1983-031, Supplementary LER 83-031/03L-1:on 830725,containment Isolation Valve CAV-6 & -7 Would Not Close Under Sys Pressure of 1,000 Psi.Caused by Insufficient Design &/Or Inadequate Maint Procedures1983-09-0707 September 1983 Supplementary LER 83-031/03L-1:on 830725,containment Isolation Valve CAV-6 & -7 Would Not Close Under Sys Pressure of 1,000 Psi.Caused by Insufficient Design &/Or Inadequate Maint Procedures 05000302/LER-1983-023, Updated LER 83-023/01T-1:on 830613,fire Damper Discovered Missing.Approx 55 Addl Dampers & Chase Connecting Control Complex 108 & 165 Ft Elevations Degraded Due to Incorrect Fire Rating.Caused by Personnel Error1983-07-20020 July 1983 Updated LER 83-023/01T-1:on 830613,fire Damper Discovered Missing.Approx 55 Addl Dampers & Chase Connecting Control Complex 108 & 165 Ft Elevations Degraded Due to Incorrect Fire Rating.Caused by Personnel Error 05000302/LER-1983-018, Updated LER 83-018/01T-1:on 830413,preliminary Repts Received from B&W Indicated 51 of 120 Upper Core Barrel Bolts W/Ultrasonic Flaw Indications.Caused by Intergranular Stress Corrosion Cracking.Bolts Replaced1983-07-12012 July 1983 Updated LER 83-018/01T-1:on 830413,preliminary Repts Received from B&W Indicated 51 of 120 Upper Core Barrel Bolts W/Ultrasonic Flaw Indications.Caused by Intergranular Stress Corrosion Cracking.Bolts Replaced 05000302/LER-1981-031, Updated LER 81-031/01T-1:on 810624,Henry Pratt Co Notified That Containment Purge Valves AHV-1A,1B,1C & 1D Could Fail During Loca.Cause Unknown.Valves Modified on 810701.Mods Resolved 10CFR100 Dose Rate Excess Identified on 8211982-11-15015 November 1982 Updated LER 81-031/01T-1:on 810624,Henry Pratt Co Notified That Containment Purge Valves AHV-1A,1B,1C & 1D Could Fail During Loca.Cause Unknown.Valves Modified on 810701.Mods Resolved 10CFR100 Dose Rate Excess Identified on 821101 ML20062G2891978-12-19019 December 1978 /01T-0 on 781218:during Routine Oper,Discovered That AHF-14C Was Overloaded & Was Secured to Attempt to Balance Air flow.AHF-14C Was Tripped During Restart & Cause Was Attributed to Not Allowing Sufficient Time for Restart 1997-03-03
[Table view] Category:TEXT-SAFETY REPORT
MONTHYEARML20217G0191999-10-15015 October 1999 Safety Evaluation Concluding That Licensee Followed Analytical Methods Provided in GL 90-05.Grants Relief Until Next Refueling Outage,Scheduled to Start on 991001.Temporary non-Code Repair Must Then Be Replaced with Code Repair 3F1099-19, Part 21 Rept Re Damage on safety-grade Cable Provided to FPC by Bicc Brand-Rex Co.Damage Was Created During Cabling Process While Combining Three Conducters.Corrective Action Program Precursor Card PC99-2868 Was Initiated1999-10-13013 October 1999 Part 21 Rept Re Damage on safety-grade Cable Provided to FPC by Bicc Brand-Rex Co.Damage Was Created During Cabling Process While Combining Three Conducters.Corrective Action Program Precursor Card PC99-2868 Was Initiated ML20217B0931999-10-0606 October 1999 Part 21 Rept Re Damaged Safety Grade Electrical Cabling Found in Supply on 990831.Damage Created During Cabling Process While Combining Three Conductors Just Prior to Closing.Vendor Notified of Reporting of Issue ML20212L0881999-10-0404 October 1999 SER Accepting Licensee Requests for Relief 98-012 to 98-018 Related to Implementation of Subsections IWE & Iwl of ASME Section XI for Containment Insp for Crystal River Unit 3 ML20212J8631999-10-0101 October 1999 Safety Evaluation Supporting Licensee Proposed Alternatives to Provide Reasonable Assurance of Structural Integrity of Subject Welds & Provide Acceptable Level of Quality & Safety.Relief Granted Per 10CFR50.55a(g)(6)(i) ML20212E9031999-09-30030 September 1999 FPC Crystal River Unit 3 Plant Reference Simulator Four Year Simulator Certification Rept Sept 1995-Sept 1999 3F1099-02, Monthly Operating Rept for Sept 1999 for Crystal River,Unit 3.With1999-09-30030 September 1999 Monthly Operating Rept for Sept 1999 for Crystal River,Unit 3.With ML20212E6911999-09-21021 September 1999 Safety Evaluation Supporting Proposed EALs Changes for Plant Unit 3.Changes Meet Requirements of 10CFR50.47(b)(4) & App E to 10CFR50 ML20211L1321999-08-31031 August 1999 EAL Basis Document 3F0999-02, Monthly Operating Rept for Aug 1999 for Crystal River,Unit 3.With1999-08-31031 August 1999 Monthly Operating Rept for Aug 1999 for Crystal River,Unit 3.With ML20212C1501999-08-31031 August 1999 Non-proprietary Version of Rev 0 to Crystal River Unit 3 Enhanced Spent Fuel Storage Engineering Input to LAR Number 239 ML20211B7291999-08-16016 August 1999 Rev 2 to Cycle 11 Colr ML20210P1111999-08-0505 August 1999 SER Accepting Evaluation of Third 10-year Interval Inservice Insp Program Requests for Relief for Plant,Unit 3 ML20210U5341999-07-31031 July 1999 Monthly Operating Rept for July 1999 for Crystal River,Unit 3 ML20209F5601999-07-31031 July 1999 EAL Basis Document, for Jul 1999 3F0799-01, Monthly Operating Rept for June 1999 for Crystal River,Unit 3.With1999-06-30030 June 1999 Monthly Operating Rept for June 1999 for Crystal River,Unit 3.With ML20210U5411999-06-30030 June 1999 Revised Monthly Operating Rept for June 1999 for Crystal River,Unit 3 3F0699-07, Monthly Operating Rept for May 1999 for Crystal River,Unit 3.With1999-05-31031 May 1999 Monthly Operating Rept for May 1999 for Crystal River,Unit 3.With ML20210U5601999-05-31031 May 1999 Revised Monthly Operating Rept for May 1999 for Crystal River,Unit 3 ML20195C6271999-05-28028 May 1999 Non-proprietary Rev 0 to Addendum to Topical Rept BAW-2346P, CR-3 Plant Specific MSLB Leak Rates ML20196L2031999-05-19019 May 1999 Non-proprietary Rev 0 to BAW-2346NP, Alternate Repair Criteria for Tube End Cracking in Tube-to-Tubesheet Roll Joint of Once-Through Sgs 3F0599-04, Monthly Operating Rept for Apr 1999 for Crystal River Unit 3.With1999-04-30030 April 1999 Monthly Operating Rept for Apr 1999 for Crystal River Unit 3.With ML20210U5631999-04-30030 April 1999 Revised Monthly Operating Rept for Apr 1999 for Crystal River,Unit 3 3F0499-04, Monthly Operating Rept for Mar 1999 for Crystal River Unit 3.With1999-03-31031 March 1999 Monthly Operating Rept for Mar 1999 for Crystal River Unit 3.With ML20204D9661999-03-31031 March 1999 Non-proprietary Rev 1,Addendum a to BAW-2342, OTSG Repair Roll Qualification Rept 3F0399-04, Special Rept 99-01:on 990310,discovered Containment Tendons That Required Grease Addition in Excess of Prescribed Limits During Recent Insp Activites.Six Tendons Were Refilled with Appropriate Amount of Grease1999-03-10010 March 1999 Special Rept 99-01:on 990310,discovered Containment Tendons That Required Grease Addition in Excess of Prescribed Limits During Recent Insp Activites.Six Tendons Were Refilled with Appropriate Amount of Grease 3F0399-03, Monthly Operating Rept for Feb 1999 for Crystal River Unit 3.With1999-02-28028 February 1999 Monthly Operating Rept for Feb 1999 for Crystal River Unit 3.With ML20203A4381999-02-0303 February 1999 Safety Evaluation Supporting EAL Changes for License DPR-72, Per 10CFR50.47(b)(4) & App E to 10CFR50 ML20206E9891998-12-31031 December 1998 Kissimmee Utility Authority 1998 Annual Rept ML20206E9021998-12-31031 December 1998 Florida Progress Corp 1998 Annual Rept ML20206E9701998-12-31031 December 1998 Ouc 1998 Annual Rept. with Financial Statements from Seminole Electric Cooperative,Inc 3F0199-05, Monthly Operating Rept for Dec 1998 for Crystal River Unit 3.With1998-12-31031 December 1998 Monthly Operating Rept for Dec 1998 for Crystal River Unit 3.With ML20206E9261998-12-31031 December 1998 Gainesville Regional Utilities 1998 Annual Rept 3F1298-13, Monthly Operating Rept for Nov 1998 for Crystal River,Unit 3.With1998-11-30030 November 1998 Monthly Operating Rept for Nov 1998 for Crystal River,Unit 3.With 3F1198-05, Monthly Operating Rept for Oct 1998 for Crystal River,Unit 3.With1998-10-31031 October 1998 Monthly Operating Rept for Oct 1998 for Crystal River,Unit 3.With ML20155F4071998-10-31031 October 1998 Rev 2 to Pressure/Temp Limits Rept ML20155J2701998-10-28028 October 1998 Second Ten-Year Insp Interval Closeout Summary Rept 3F1098-06, Monthly Operating Rept for Sept 1998 for Crystal River Unit 3.With1998-09-30030 September 1998 Monthly Operating Rept for Sept 1998 for Crystal River Unit 3.With ML20206E9461998-09-30030 September 1998 Utilities Commission City of New Smyrna Beach,Fl Comprehensive Annual Financial Rept Sept 30,1998 & 1997 ML20206E9561998-09-30030 September 1998 City of Ocala Comprehensive Annual Financial Rept for Yr Ended 980930 ML20206E9101998-09-30030 September 1998 City of Bushnell Fl Comprehensive Annual Financial Rept for Fiscal Yr Ended 980930 ML20206E9811998-09-30030 September 1998 City of Tallahassee,Fl Comprehensive Annual Financial Rept for Yr Ended 980930 ML20195E3121998-09-30030 September 1998 Comprehensive Annual Financial Rept for City of Leesburg,Fl Fiscal Yr Ended 980930 3F0998-07, Monthly Operating Rept for Aug 1998 for Crystal River Unit 3.With1998-08-31031 August 1998 Monthly Operating Rept for Aug 1998 for Crystal River Unit 3.With ML20236W6501998-07-31031 July 1998 Emergency Action Level Basis Document 3F0898-02, Monthly Operating Rept for Jul 1998 for Crystal River,Unit 11998-07-31031 July 1998 Monthly Operating Rept for Jul 1998 for Crystal River,Unit 1 ML20236V8801998-07-30030 July 1998 Control Room Habitability Rept 3F0798-01, Monthly Operating Rept for June 1998 for Crystal River Unit 31998-06-30030 June 1998 Monthly Operating Rept for June 1998 for Crystal River Unit 3 ML20236Q4611998-06-30030 June 1998 SER for Crystal River Power Station,Unit 3,individual Plant Exam (Ipe).Concludes That Plant IPE Complete Re Info Requested by GL 88-20 & IPE Results Reasonable Given Plant Design,Operation & History 3F0698-02, Monthly Operating Rept for May 1998 for Crystal River Unit 31998-05-31031 May 1998 Monthly Operating Rept for May 1998 for Crystal River Unit 3 1999-09-30
[Table view] |
LER-2083-018, Updated LER 83-018/01T-1:on 830413,preliminary Repts Received from B&W Indicated 51 of 120 Upper Core Barrel Bolts W/Ultrasonic Flaw Indications.Caused by Intergranular Stress Corrosion Cracking.Bolts Replaced |
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. , UPDATE REPORT - LAST REPORT DATED 0h/27/83 NRC FORM 3s4 U.S. NUCLE AR REGULATORY COMMISSION LICENSEE EVENT REPORT EXHIBIT A CONTROL . SLOCK: l l l l l .l lh IPLE ASE PRINT OR TYPE ALL REQUIRED INFORMATION) lF l LlC l R lP l 3 l@ul0 l 0l- l uca=sa uca=ses coot is 0 l 0lnuM.ea 0 l 0l 0l -l0 l 2$0 lg[ a h uca~sa l 1l 1]Tves 1lao1lg u A e.g CON'T E M.Ol 0 l 5l0 l -l0 l 3 l0 l 2 lgl 0 i hl1 6 occKEY hum.ER 13l8 l 3 l@l0 l 7l1 l 2l 8l 3.0 lg EVENT .A TE 34 75 RE POR T . AT E EVENT DESCRIPTION AND PROSASLE CONSEQUENCES o lSince April 13, 1983, FPC rece ved preliminary reports from B&W indicatinq
, , , , ,that 51 of 120 upper core barrel bolts showed ultrasonic flaw indications.
o . lFPC embarked on a testing program for those reactor vessel bolts listed ing
, , lthe attachment. The results were that 74 of 96 lower thermal shield ,
, , , bolts and 20 of 72 surveillance specimen holder tubes and 4 of 108 o , l tested lower core barrel bolts showed ultrasonic flaw indications. ,
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, lThe flaws were apparently caused by intergranular stress corrosion crack- l
, , gi ng.All 120 upper core barrel bolts were replaced with redesigned bolts i lmade of A-286 material. All 96 of the lower thermal shield bolts and some i
, lof the surveillance holder tube bits were replaced v/Inconel X750 stud / l nut fasteners. This rev. documents the results of t,esting and the i 4 l corrective nction tnkon_ l
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fi SUPPI'L INTARY INFORMATION REPORT NO.: - 50-302/83-t48/0lT-1 FACILITY: Crystal R'.ver Unit 3 REPORT DATE: July li,1983
' OCCURRENCE DATE: . April 13,1983 IDENTIFICATION OF OCCURRENCE:
Florida Power Corporation has received a preliminary report from Babcock & Wilcox (B&W) indicating that numerous. reactor vessel internal bolts may be defective. The possible failure of these bolts is being reported as required by Technical Specification 6.9.1.8.1.
CONDITIONS PRIOR TO OCCURRENCE:
Mode 6 (Refueling)
DESCRIPTION OF OCCURRENCE:
On April 13, 1983, Florida Power Corporation received a preliminary report from Babcock &
Wilcox Indicating 25 of 61 upper core barrel bolts ultrasonically tested may be defective. Since April 13, as a result of extensive ultrasonic testing, Florida Power Corporation has found
. additional defect indications on reactor vessel internal bolts. The results of the tests are described on the attachment.
DESIGNATION OF APPARENT CAUSE:
A preliminary study by B&W has indicated tha't defects in the upper core barrel (UCB) bolts were caused by intergranular stress corrosion.
ANALYSIS OF OCCURRENCE:
The integrity of the core -was maintained because the number of UCB- bolts which passed ultrasonic (UT) inspection was much higher than the number of bolts needed to hold the core barrel (with the' core) in place. There was no effect upon the health or safety of the general public. -
CORRECTIVE ACTION:
The following corrective action was taken:
1.. All 120 UCB bolts were replaced with bolts which:
A. Were machined out of a single piece of A-286 material.
B. Had a redesigned transition region between the head and shank to minimize local
' stress.
C. Were peened in advance to reduce surface stress in use. .
D. Were installed with . torque values and pre-stress methods that resulted in a pea!:
stress of 78,000 psi which is well below the measured yield stress of 100,000-134,000 psi for the A-286 material.
- 2. All 96 lower thermal shield bolts were replaced with . stud / nut fasteners made of Inconel X750.
/
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. 3. Surveillance specimen holder tube (SSHT) bolts which showed UT flaw indications were replaced with stud / nut fasteners made of Inconel X750 such that were at least three (3) good (no UT flaw indications) fasteners per upper and lower bracket.
- 4. None of lower core barrel bolts, flow distributer bolts, guide block bolts, and upper thermai shield bolts were replaced. At Refuel V the lower core barrel bolts will be reinspected and their status reevaluated.
FAILURE DATA:
This is the 18th event reported under Technical Specification 6.9.1.8 i.
1 2
REACTOR VESSEL INTERNAL BOLTS RESULTS OF ULTRASONIC TESTS 1
BOLT LOCATION TOTAL NO. OF BOLTS 'NO. OF BOLTS TESTED NO. OF INDICATIONS NO. OF BOLTS REPLACED i
Upper Core Barrel 120 120 51 120
- Lower Core Barrel 120 108 4 0 Flow Distributor to Lower Grid 120 114- 0 0 Upper Thermal Shield (Upper Restraint Block) 60 60 0 0
, Lower Thermal Shield 96 96 74 96 i
Surveillance Holder Tube '72 72 20 17 Guide Block Bolts 24 24 0 0 1
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M Power C O n P o n a t e n eu July 12,1983 3F-0783-09 Mr. James P. O'Reilly Regional Administrator, Region II Office of Inspection & Enforcement U.S. Nuclear Regulatory Commission 101 Marietta Street N.W., Suite 2900 Atlanta, GA 30303
Subject:
Crystal River Unit 3 Docket No. 50-302 Operating License No. DPR-72 Licensee Event Report No. 83-018/0lT-1
Dear Mr. O'Reilly:
Enclosed is Licensee Event Report No. 83-018/-01T-1 and the attached supplementary information sheet, which are submitted in accordance with Technical Specification 6.9.1.8.i. This report supplies suppleinentary information to our initial report dated April 27, 1983.
Should there be any questions, please contact this office.
Sincerely, o
G. R. Westafer Manager Nuclear Licensing and Fuel Management RTimm Enclosure cc: Document Contrcl Desk U. S. Nuclear Regulatory Commission Washington, D.C. 2055
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05000302/LER-1983-001, Forwards LER 83-001/01T-0 | Forwards LER 83-001/01T-0 | | 05000302/LER-1983-002, Forwards LER 83-002/03L-0 | Forwards LER 83-002/03L-0 | | 05000302/LER-1983-003, Forwards LER 83-003/03L-0 | Forwards LER 83-003/03L-0 | | 05000302/LER-1983-004, Forwards LER 83-004/03L-0 | Forwards LER 83-004/03L-0 | | 05000302/LER-1983-005, Forwards LER 83-005/03L-0 | Forwards LER 83-005/03L-0 | | 05000302/LER-1983-006, Forwards LER 83-006/03L-0 | Forwards LER 83-006/03L-0 | | 05000302/LER-1983-007, Forwards LER 83-007/03L-0 | Forwards LER 83-007/03L-0 | | 05000302/LER-1983-008, Forwards LER 83-008/03L-0 | Forwards LER 83-008/03L-0 | | 05000302/LER-1983-009, Forwards LER 83-009/03L-0 | Forwards LER 83-009/03L-0 | | 05000302/LER-1983-010, Forwards LER 83-010/03L-0 | Forwards LER 83-010/03L-0 | | 05000302/LER-1983-011, Forwards LER 83-011/03L-0 | Forwards LER 83-011/03L-0 | | 05000302/LER-1983-012, Forwards LER 83-012/03L-0 | Forwards LER 83-012/03L-0 | | 05000302/LER-1983-013, Forwards LER 83-013/03L-0 | Forwards LER 83-013/03L-0 | | 05000302/LER-1983-014, Forwards LER 83-014/03L-0 | Forwards LER 83-014/03L-0 | | 05000302/LER-1983-015, Forwards LER 83-015/03L-0 | Forwards LER 83-015/03L-0 | | 05000302/LER-1983-016, Forwards LER 83-016/03L-0 | Forwards LER 83-016/03L-0 | | 05000302/LER-1983-017, Forwards LER 83-017/01T-0.Detailed Event Analysis Encl | Forwards LER 83-017/01T-0.Detailed Event Analysis Encl | | 05000302/LER-1983-018, Updated LER 83-018/01T-1:on 830413,preliminary Repts Received from B&W Indicated 51 of 120 Upper Core Barrel Bolts W/Ultrasonic Flaw Indications.Caused by Intergranular Stress Corrosion Cracking.Bolts Replaced | Updated LER 83-018/01T-1:on 830413,preliminary Repts Received from B&W Indicated 51 of 120 Upper Core Barrel Bolts W/Ultrasonic Flaw Indications.Caused by Intergranular Stress Corrosion Cracking.Bolts Replaced | | 05000302/LER-1983-019, Forwards LER 83-019/03L-0 | Forwards LER 83-019/03L-0 | | 05000302/LER-1983-023, Updated LER 83-023/01T-1:on 830613,fire Damper Discovered Missing.Approx 55 Addl Dampers & Chase Connecting Control Complex 108 & 165 Ft Elevations Degraded Due to Incorrect Fire Rating.Caused by Personnel Error | Updated LER 83-023/01T-1:on 830613,fire Damper Discovered Missing.Approx 55 Addl Dampers & Chase Connecting Control Complex 108 & 165 Ft Elevations Degraded Due to Incorrect Fire Rating.Caused by Personnel Error | | 05000302/LER-1983-031, Supplementary LER 83-031/03L-1:on 830725,containment Isolation Valve CAV-6 & -7 Would Not Close Under Sys Pressure of 1,000 Psi.Caused by Insufficient Design &/Or Inadequate Maint Procedures | Supplementary LER 83-031/03L-1:on 830725,containment Isolation Valve CAV-6 & -7 Would Not Close Under Sys Pressure of 1,000 Psi.Caused by Insufficient Design &/Or Inadequate Maint Procedures | | 05000302/LER-1983-034, Forwards Revised Commitments Re Insp Repts 50-302/79-04, 50-302/81-11 & 50-302/85-18 & LER 83-34.Plant Procedures Revised to Route All PRRs & MAR Through Nuclear Safety Organization for Approval of Safety Evaluations | Forwards Revised Commitments Re Insp Repts 50-302/79-04, 50-302/81-11 & 50-302/85-18 & LER 83-34.Plant Procedures Revised to Route All PRRs & MAR Through Nuclear Safety Organization for Approval of Safety Evaluations | | 05000302/LER-1983-039, Informs That Engineering Investigation of 12 Process Instruments Discovered Out of Calibr During Surveillance Testing & Reported in LER 83-039 Nearing Completion.Next Rept Expected by 840127 | Informs That Engineering Investigation of 12 Process Instruments Discovered Out of Calibr During Surveillance Testing & Reported in LER 83-039 Nearing Completion.Next Rept Expected by 840127 | | 05000302/LER-1983-045, Rev 1 to LER 83-045/03X-1:on 831016,1104 & 08,175-ft Wind Speed Instrumentation & on 831028 & 1102,33-ft Wind Direction Instrumentation Discovered Inoperable.Caused by Severe Weather Damage & Component Failure | Rev 1 to LER 83-045/03X-1:on 831016,1104 & 08,175-ft Wind Speed Instrumentation & on 831028 & 1102,33-ft Wind Direction Instrumentation Discovered Inoperable.Caused by Severe Weather Damage & Component Failure | | 05000302/LER-1983-053, Updated LER 83-053/03L-1:on 831109,safety-related Hydraulic Snubber MSH-252 Declared Inoperable When Lack of Oil Level Indication Noted in Sightglass.Caused by Loose jam-nut on Stationary End of Snubber,Allowing rotation.W/8401 | Updated LER 83-053/03L-1:on 831109,safety-related Hydraulic Snubber MSH-252 Declared Inoperable When Lack of Oil Level Indication Noted in Sightglass.Caused by Loose jam-nut on Stationary End of Snubber,Allowing rotation.W/840106 Ltr | | 05000302/LER-1983-058, Updated LER 83-058/03L-1:on 831103,while Performing Maint on 120-volt Ac Vital Bus Transfer Switch,Fuse Blew,Rendering Inverter 3A Inoperable.Caused by Personnel Inadvertently Shorting Out Lamp Base.Inverter repaired.W/840106 L | Updated LER 83-058/03L-1:on 831103,while Performing Maint on 120-volt Ac Vital Bus Transfer Switch,Fuse Blew,Rendering Inverter 3A Inoperable.Caused by Personnel Inadvertently Shorting Out Lamp Base.Inverter repaired.W/840106 Ltr | |
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