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Category:REPORTABLE OCCURRENCE REPORT (SEE ALSO AO
MONTHYEARML20028F3931983-01-19019 January 1983
Ro:On 821220,reactor Trip Circuit Breaker a Failed to Trip When Trip Signal Initiated.Caused by Sticking Undervoltage Relay.Relay Replaced.Contacts Cleaned
ML20039F6081981-12-28028 December 1981
Ro:On 811228,review of Info Re Reactor Vessel Matl Surveillance Program Revealed Calculational Error in Analyses Used to Update Heatup & Cooldown Curves.Unrevised Tech Spec Figures 3.1-1 & 3.1-2 Remain Conservative
ML20038B5001981-12-0303 December 1981
Ro:On 811201,pressurizer Block Valves Found to Not Meet Design Specs of Closing Against Design Pressure.Caused by Undersized Motor Operator Which Will Not Develop Sufficient Torque to Shut Block Valve
ML20038C7961981-12-0202 December 1981
Ro:On 811201,discovered Pressurizer Block Valves Did Not Meet Design Spec in That They May Not Close Against Design Pressure.Caused by Undersized Limitorque Operator Model SMB-000-5
ML20009H6891981-07-30030 July 1981
Nonroutine 30-day Rept:On 810623,fire Door 5 Opened to Relieve Excessive Heat from Auxiliary Feedwater Pump Room. Heat Caused by Backleakage Combined W/Hot Temp & Lack of Ventilation.Repairs Scheduled for Fall Refueling Outage
ML20009H5771981-07-22022 July 1981
Ro:On 810608,fire Barrier Penetration Fire Seals Found in Nonconformance W/Approved Configuration Requirements. Deficiencies Occurred During Mod 445-N Implementation.Seals Will Be Repaired During Refueling Outage
ML19341B2741981-01-15015 January 1981
Ro:On 810114,both Channels of Heat Trace for Both Boric Acid Transfer Pumps Determined Inoperable in Violation of Tech Spec 3.2.3.C.Caused by Misleading Step in Procedure for Taking Pump Out of Svc
ML18004B9871979-08-30030 August 1979
Ro:On 790829,svc Water Booster Pump a Tripped When Svc Water Booster Pump B Was Stopped,In Violation of Tech Specs 3.3.4.1.a.Power Reduction Initiated & Svc Water Booster Pumps Returned to Svc
ML19317D4681973-05-0101 May 1973
Ro:On 730423,water Spill from Refueling Water Storage Tank to Storm Drainage Sys.Caused by Inadequate Procedures & Personnel Error.Plant Mgt Will Review Methods & Have Cautioned Operators to Exercise Extreme Caution
1983-01-19
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Category:LER)
MONTHYEARML20028F3931983-01-19019 January 1983
Ro:On 821220,reactor Trip Circuit Breaker a Failed to Trip When Trip Signal Initiated.Caused by Sticking Undervoltage Relay.Relay Replaced.Contacts Cleaned
ML20039F6081981-12-28028 December 1981
Ro:On 811228,review of Info Re Reactor Vessel Matl Surveillance Program Revealed Calculational Error in Analyses Used to Update Heatup & Cooldown Curves.Unrevised Tech Spec Figures 3.1-1 & 3.1-2 Remain Conservative
ML20038B5001981-12-0303 December 1981
Ro:On 811201,pressurizer Block Valves Found to Not Meet Design Specs of Closing Against Design Pressure.Caused by Undersized Motor Operator Which Will Not Develop Sufficient Torque to Shut Block Valve
ML20038C7961981-12-0202 December 1981
Ro:On 811201,discovered Pressurizer Block Valves Did Not Meet Design Spec in That They May Not Close Against Design Pressure.Caused by Undersized Limitorque Operator Model SMB-000-5
ML20009H6891981-07-30030 July 1981
Nonroutine 30-day Rept:On 810623,fire Door 5 Opened to Relieve Excessive Heat from Auxiliary Feedwater Pump Room. Heat Caused by Backleakage Combined W/Hot Temp & Lack of Ventilation.Repairs Scheduled for Fall Refueling Outage
ML20009H5771981-07-22022 July 1981
Ro:On 810608,fire Barrier Penetration Fire Seals Found in Nonconformance W/Approved Configuration Requirements. Deficiencies Occurred During Mod 445-N Implementation.Seals Will Be Repaired During Refueling Outage
ML19341B2741981-01-15015 January 1981
Ro:On 810114,both Channels of Heat Trace for Both Boric Acid Transfer Pumps Determined Inoperable in Violation of Tech Spec 3.2.3.C.Caused by Misleading Step in Procedure for Taking Pump Out of Svc
ML18004B9871979-08-30030 August 1979
Ro:On 790829,svc Water Booster Pump a Tripped When Svc Water Booster Pump B Was Stopped,In Violation of Tech Specs 3.3.4.1.a.Power Reduction Initiated & Svc Water Booster Pumps Returned to Svc
ML19317D4681973-05-0101 May 1973
Ro:On 730423,water Spill from Refueling Water Storage Tank to Storm Drainage Sys.Caused by Inadequate Procedures & Personnel Error.Plant Mgt Will Review Methods & Have Cautioned Operators to Exercise Extreme Caution
1983-01-19
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Category:TEXT-SAFETY REPORT
MONTHYEARML20217A1691999-09-22022 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
RA-97-0258, LER 97-S12-00:on 971119,discovered Uncompensated Security Zone.Caused by Inattention to Detail by Members of Security Force.Provided Event Info to Security Shift Personnel & Changed Practice Re Zone Review1997-12-19019 December 1997
LER 97-S12-00:on 971119,discovered Uncompensated Security Zone.Caused by Inattention to Detail by Members of Security Force.Provided Event Info to Security Shift Personnel & Changed Practice Re Zone Review
ML20211M6491997-10-0808 October 1997
Addenda 1 to Part 21 Rept Re Weldments on Opposed Piston & Coltec-Pielstick Emergency stand-by Diesel gen-set lube-oil & Jacket Water Piping Sys.Revised List of Potentially Affected Utils to Include Asterisked Utils,Submitted
ML20217Q2751997-06-30030 June 1997
CP&L Fitness for Duty Program Performance Data for Period 970101-0630
ML14183A6951995-09-18018 September 1995
Safety Evaluation Approving Relocation of Technical Support Ctr
ML20059H7721994-01-17017 January 1994
Part 21 Rept Re Virginia Power Notifying Fairbands Morse Via Failure Analysis Rept NESML-Q-058 of Defective Air Start Distributor cam,16104412
ML17352A8691993-05-31031 May 1993
Technical Rept, Assessment of Aging Degradation of Civil/ Structural Features at Selected Operating Nuclear Power Plants.
ML20125C7161992-12-0707 December 1992
Part 21 Rept Re Possibility for Malfunction of Declutching Mechanisms in SMB/SB-000 & SMB/SB/SBD-00 Actuators. Malfunction Only Occurs During Seismic Event.Balanced Levers May Be Purchased from Vendor.List of Affected Utils Encl
ML20127P5861992-11-23023 November 1992
Followup to 921005 Part 21 Rept Re Potential Defect in SB/SBD-1 Housing Cover Screws.Procedure Re Replacement of SBD-1 Spring Cover Bolts Encl.All Fasteners Should Be Loosened & Removed.List of Affected Utils Encl
ML20118B4391992-09-11011 September 1992
Part 21 Rept Re Degradation in Abb Type 27N Undervoltage Relays Used in Electrical Switchgear.Recommends That Users Review Applications Requiring Exposures Greater than 1E03 Rads TID W/Time Delay Function Option
ML20079H1571991-09-30030 September 1991
Nonproprietary Evaluation of Revised Transfer to Cold Leg Recirculation Procedure,Hb Robinson Unit 2
ML20086T2951991-06-14014 June 1991
Rev 1 to EQ Documentation Package Eqdp 36.0, Boston Insulated Wire Cable
ML20086T2861991-03-0808 March 1991
Rev 1 to EQ Documentation Package Eqdp 11.1, Dekoron Instrumentation Cables
ML20086T2561991-03-0808 March 1991
Rev 1 to EQ Documentation Package 10.0, Continental Shielded Instrument Cable
ML20065K6961990-10-31031 October 1990
Mechanical Licensing Rept for Hb Robinson High Thermal Performance Fuel Assemblies
ML20065K6971990-10-31031 October 1990
Thermal Hydraulic Compatibility Analysis of Anf High Thermal Performance Fuel for Hb Robinson,Unit 2
ML20005G6831990-01-0505 January 1990
Part 21 Rept Re Installation Instructions for Grommet Use Range for Patel Conduit Seal P/N 841206.Conduit Seals in Environ Qualification Applications Inspected for Proper Wire Use Range & Grommets Replaced
ML20247E0701989-07-20020 July 1989
Info Rept:On 890717-0804,fire Penetration Seals Will Be Removed from Svc to Allow Access for Ventilation Sys Mod. Addl Fire Barrier Penetrations Will Be Made in Wall Between RHR Pump Pit & Fuel Handling Bldg,Per Tech Spec 3.14.7.2
ML20246E9111989-03-31031 March 1989
PDC-3:Advanced Nuclear Fuels Corp Power Distribution Control for PWRs & Application of PDC-3 to Hb Robinson Unit 2
ML20245H0821989-01-25025 January 1989
Criticality Safety Analysis of Hb Robinson Spent Fuel Pool W/4.2% Nominal Enrichment Fuel Assemblies
ML20205T0551988-10-31031 October 1988
Responses to NRC Questions on RTD Bypass Elimination Licensing Rept
ML20147E2371988-02-29029 February 1988
1987 Annual Rept - Primary Coolant Iodine Spikes
ML20147B1971987-12-31031 December 1987
1987 Annual Rept - Primary Safety & Relief Valve Challenges
ML20236K7731987-10-31031 October 1987
Monthly Operating Rept for Oct 1987
ML20235W3781987-09-30030 September 1987
Monthly Operating Rept for Sept 1987
ML20238E2741987-08-31031 August 1987
Monthly Operating Rept for Aug 1987
ML20235H3151987-06-30030 June 1987
Monthly Operating Rept for June 1987
ML17261A5301987-06-18018 June 1987
Part 21 Rept Re Potential Util Failure to Comply W/Component Containment Isolation Licensing Commitment If Proposed Mods to Component Cooling Water Sys Instituted.Utils Advised to Evaluate Containment Isolation Sys
ML20214W3241987-05-31031 May 1987
Monthly Operating Rept for May 1987
ML20214R5101987-04-30030 April 1987
Rev 1 to Monthly Operating Rept for Apr 1987,correcting Operation Statistics & Shutdown Experience Due to Mathematical Errors
ML20215L4941987-04-30030 April 1987
Monthly Operating Rept for Apr 1987
ML20206F3561987-03-31031 March 1987
Monthly Operating Rept for Mar 1987
ML20210B4141987-03-31031 March 1987
Revised Monthly Operating Rept for Mar 1987
ML20205F6021987-03-23023 March 1987
Special Rept:On 870302,noble Gas Effluent Monitor for Main Steam Line B Declared Inoperable & Svc Not Returned Until 870312.Caused by Defective Detector.Detector Replaced.High Voltage for Detector Adjusted & Sys Operation Checked
ML20212P3101987-02-28028 February 1987
Monthly Operating Rept for Feb 1987
ML20214Q7891987-01-31031 January 1987
Cycle 12,SAR
ML20210R6341987-01-31031 January 1987
Monthly Operating Rept for Jan 1987
ML20207M2451986-12-31031 December 1986
Monthly Operating Rept for Dec 1986
L-18-120, Rev 0 to Supplemental Info in Support of Conservatisms in Criticality Analysis Performed for Hb Robinson Isfsi1986-12-18018 December 1986
Rev 0 to Supplemental Info in Support of Conservatisms in Criticality Analysis Performed for Hb Robinson Isfsi
ML20215C7911986-11-30030 November 1986
Monthly Operating Rept for Nov 1986
ML20213F3121986-10-31031 October 1986
Monthly Operating Rept for Oct 1986
ML20215G1081986-09-30030 September 1986
Monthly Operating Rept for Sept 1986
ML20215F0361986-09-29029 September 1986
Special Rept:On 860902,during Cold Shutdown,Pressurizer PORV Lifted Twice to Prevent Overpressurization.Caused by Inadvertent Action by Unit Operators.Operations Personnel Counseled Re Importance of Breaker Position Indicators
ML20211C0641986-09-0909 September 1986
Rev 0 to Final Rept Criticality Safety Analysis Hb Robinson Spent Fuel Storage Racks (Unpoisoned,Low Density) W/4.2% Enriched 15x15 Fuel Assemblies
ML20211C0491986-09-0202 September 1986
Rev 0 to Final Rept Criticality Safety Analysis Hb Robinson New Fuel Storage Vault W/4.2% Enriched 15x15 Fuel Assemblies
ML20212F5321986-07-31031 July 1986
Monthly Operating Rept for Jul 1986
ML20203D0221986-07-14014 July 1986
Part 21 Rept Re Air Monitoring Sys Probes Exhibiting Blue Tip Rather than Normal White Tip & Insensitive to Chlorine. Caused by Improper Handling/Storage.Advisory Bulletin Encl. Item Not Reportable Per Part 21
ML20202G3371986-06-30030 June 1986
Monthly Operating Rept for June 1986
ML20211B5601986-05-31031 May 1986
Monthly Operating Rept for May 1986
ML20197D2651986-04-30030 April 1986
Monthly Operating Rept for Apr 1986
1999-09-22
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Text
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z g a ty tgroligagowd 9 Light Company H. B. ROBINSON STEAM ELECTRIC PLANT POST OFFICE BOX 790 HARTSVILLE, SOUTH CAROLINA 29550 DEC 0 2 198J Robinson File No: 2-0-4-a-3 SERIAL: RSEP/81-2014
,c f Mr. James P. O'Reilly, Director CJ.
'q U. S. Nuclear Regulatory Commission Region II j k-
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' pf! f I{ ) g 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303 DEC 10 1981* E a meron ~
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H. B. ROBINSON STEAM ELECTRIC PLANT, UNIT NO. 2 v.
N E h0. R2 PROMPT NOTIFICATION - PRESSURIZER BLOCK VALVE FAILURE Nh
Dear Mr. O'Reilly:
In accordance with section 6.9.2 of the Technical Specifications for the H. B. Robinson Steam Electric Plant, Unit 2, the following event is reported.
On December 1, 1981 at approximately 1700 hours0.0197 days <br />0.472 hours <br />0.00281 weeks <br />6.4685e-4 months <br /> it was determined that the pressurizer block valves do not meet their design specifications (G-676758) in that they may not close against design pressure, 2485 psig. The apparent cause of failure is an undersized motor operator (Limitorque:
SMB-000-5), which will not develop sufficient torque to shut the block valve (Velan: 3-GM58SM). This failure could be a potentially generic problem and therefore it is being reported pursuant to Technical Specification 6.9.2.9.
Mr. C. Julian, NRC Region II, and Mr. B. J. Furr, Vice President - Nuclear Operations, were notified of this event on the afternoon of December 2, 1981.
Very truly yours,
/
hk lIIv 3 R. B. S tarkey, General Manager H. B. Robinson S. E. Plant FMG/as
,g pp 1 M. A k[
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