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| | number = ML20195D000 | | | number = ML20195D000 |
| | issue date = 10/31/1998 | | | issue date = 10/31/1998 |
| | title = Monthly Operating Rept for Oct 1998 for Davis-Besse Nuclear Power Station,Unit 1.With 981113 Ltr | | | title = Monthly Operating Rept for Oct 1998 for Davis-Besse Nuclear Power Station,Unit 1.With |
| | author name = Lash J, Matranga E | | | author name = Lash J, Matranga E |
| | author affiliation = CENTERIOR ENERGY | | | author affiliation = CENTERIOR ENERGY |
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| | contact person = | | | contact person = |
| | document report number = CCN:P-6-98-10, NUDOCS 9811170269 | | | document report number = CCN:P-6-98-10, NUDOCS 9811170269 |
| | | title reference date = 11-13-1998 |
| | document type = MONTHLY OPERATING ANALYSIS REPORT, TEXT-SAFETY REPORT | | | document type = MONTHLY OPERATING ANALYSIS REPORT, TEXT-SAFETY REPORT |
| | page count = 3 | | | page count = 3 |
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| =Text= | | =Text= |
| {{#Wiki_filter:}} | | {{#Wiki_filter:_... _ |
| | l $ ?an= |
| | Davis-Besse Nuclear Power Station j |
| | yn 5501 North State Route 2 |
| | \\ |
| | Oak Harbor. Ohio 43449-9760 m |
| | November 13,1998. |
| | CCN: P-6-98-10 i |
| | Document Control Desk U. S. Nuclear Regulatory Commission One White Flint North 11555 Rockville Pike Rockville, MD 20852-2738 Ladies and Gentlemen: |
| | Monthly Operating Report, October 1998 Davis-Besse Nuclear Power Station Unit 1 Enclosed is a copy of the Monthly Operating Report for the Davis-Besse Nuclear Power Station for the month of Oeober 1998. |
| | If you have any questions, please contact E. C. Matranga at (419) 321-8369. |
| | l Very truly yours, |
| | ~ju s H. Lash Plant Manager Davis-Besse Nuclear Power Station ECM/ljk l |
| | Enclosure p |
| | cc: |
| | . J. L. Caldwell NRC Region III Acting Administrator A. G. Hansen NRC Project Manager j |
| | S. J. Campbell lh l |
| | NRC Senior Resident Inspector |
| | / |
| | 9811170269 981031 iM PDR ADOCK 05000345" R |
| | PDRCe |
| | |
| | .. r. |
| | OPERATING DATA REPORT DOCKET NO. |
| | 50-0346 UNIT NAME Davis-Besse Unit 1 DATE November 9.1998 COMPLETED BY E. C. Matranaa TELEPHONE 419-321-8369 REPORTING PERIOD October.1998 YEAR IQ MONTH DATE CUMULATIVE 1 Design Electrical Rating (MWe-Net). |
| | 906 The nominal net electrical output of the unit specified by the utility and used for the purpose of plant design. |
| | 2 Maximum Dependable Capacity (MWe-Net). |
| | 873 The gross electrical output as measured at the output terminals of the turbine-generator during the most restrictive seasonal conditions minus the normal station service loads. |
| | 3 Number of Hours the Reactor Was Cntical. |
| | 624.6 5,827.7 120,259.9 The total number of hours during the gross hours of the reporting period that the reactor was critical. |
| | 4 Number of Hours the Generator Was On Line. |
| | 605.0 5,719.9 117,807.7 (Also called Service Hours). The total number of hours during the gross hours of the reporting period that the unit operated with breakers closed to the station bus. |
| | The sum of the hours the generator was on line plus the total outage hours should equal the gross hours in the reporting period. |
| | 5 Unit Reserve Shutdown Hours. |
| | 0.0 0.0 5,532.0 The total number of hours during the gross hours of the reporting period ths; the unit was removed from service for economic or similar reasons but was available for i |
| | operation. |
| | 6 Net Electrical Energy (MWH). |
| | 524,776 4,835,429 95,061,986 The gross electrical output of the unit measured at the output terminals of the turbine-generator minus the normal station service loads during the gross hours of the reporting period, expressed in mega-watt hours. Negative quantities should not be used. |
| | * a UNIT SHUTDOWNS |
| | ^ |
| | DOCKET NO.' |
| | 50-346 k |
| | UNIT NAME Davis-Besse #1 DATE_ November 9,1998 COMPLETED BY E. C. Mau^ ese REPORTING PERIOD: October.1998 TELEPHONE (419) 32't-8369 NO. |
| | DATE TYPE DURATION REASON (1) |
| | METHOD OF - |
| | CAUSE/ CORRECTIVE ACTIONS F: FORCED. |
| | (HOURS) |
| | SHUTTING S: SCHEDULED DOWN (2) |
| | COMMENTS 1998-11 10/14/98 F |
| | A 2 |
| | Inadequate human interface design caused the loss of the essential 4160 bus. Improved guidance and additional barriers added. Failed rupture disk caused the CCW leak. A 146.9 modification was initiated for additional overpressure protection. |
| | 1998-12 10/18/98 F |
| | F 3 |
| | Improper procedure sequence. Procedure was changed. |
| | |
| | ==SUMMARY== |
| | Reactor power was maintained at approximately 100% full power for the majority of the month. On October 14,1998, at 1523 hours, the reactor was manually tripped from 87% full power due to a Component Cooling Water leak that occurred following a loss and re-energization of an essential 4160 volt electrical bus. Following completion of required maintenance, a reactor startup was commenced and criticality achieved October 18, 1998, at 1636 hours. An automatic reactor trip occured at 2152 hours due to mispositioning an Anticipatory Reactor Trip System (ARTS) switch during the startup. Following the completion of corrective action, the reactor was taken critical at 1904 hours on October 19,1998. The Main Generator was synchronized to the grid at 1131 hours on October 20, and 100% full power was achieved at 2030 hours on October 21.1996 (1) Reason: |
| | (2) Method: |
| | A-Equipment Failure (Explain) 1-Manual ' |
| | B-Maintenance or Test 2-Manual Trip / Scram C-Refueling 3-Automatic Trip / Scram D-Regulatory Restriction 4-Continuation E-Operator Training & License Examin 5-Other (Explain) |
| | F-Administrative G-Operational Error (Explain) |
| | H-Other (Explain) |
| | .}} |
|
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Category:MONTHLY OPERATING ANALYSIS REPORT
MONTHYEARML20217D5441999-09-30030 September 1999 Monthly Operating Rept for Sept 1999 for Davis-Besse Nuclear Power Station.With ML20211R0811999-08-31031 August 1999 Monthly Operating Rept for Aug 1999 for Davis-Besse Nuclear Power Station,Unit 1.With ML20210Q8541999-07-31031 July 1999 Monthly Operating Rept for July 1999 for Davis-Besse Nuclear Power Station,Unit 1.With ML20209E6231999-06-30030 June 1999 Monthly Operating Rept for June 1999 for Davis-Besse Nuclear Power Station,Unit 1.With ML20195F4871999-05-31031 May 1999 Monthly Operating Rept for May 1999 for Davis-Besse Nuclear Power Station,Unit 1.With ML20206M6341999-04-30030 April 1999 Monthly Operating Rept for Apr 1999 for Davis-Besse Nuclear Station,Unit 1.With ML20205M2931999-03-31031 March 1999 Monthly Operating Rept for Mar 1999 for Davis-Besse Nuclear Power Station.With ML20207J1461999-02-28028 February 1999 Monthly Operating Rept for Feb 1999 for Davis-Besse Nuclear Power Station,Unit 1.With ML20199E2501998-12-31031 December 1998 Monthly Operating Rept for Dec 1998 for Davis-Besse Nuclear Power Station,Unit 1.With ML20197J3441998-11-30030 November 1998 Monthly Operating Rept for Nov 1998 for Davis-Besse Nuclear Power Station,Unit 1.With ML20195D0001998-10-31031 October 1998 Monthly Operating Rept for Oct 1998 for Davis-Besse Nuclear Power Station,Unit 1.With ML20154H5801998-09-30030 September 1998 Monthly Operating Rept for Sept 1998 for Davis-Besse Nuclear Power Station,Unit 1.With ML20151W1611998-08-31031 August 1998 Monthly Operating Rept for Aug 1998 for Dbnps.With ML20237B1681998-07-31031 July 1998 Monthly Operating Rept for July 1998 for Davis-Besse Nuclear Power Station,Unit 1 ML20236N7451998-06-30030 June 1998 Monthly Operating Rept for June 1998 for Davis-Besse Nuclear Power Station,Unit 1 ML20249A4121998-05-31031 May 1998 Monthly Operating Rept for May 1998 for Davis-Besse Nuclear Power Station,Unit 1 ML20236N7501998-04-30030 April 1998 Rev 2 to Monthly Operating Rept for Apr 1998 for Davis-Besse Nuclear Power Station,Unit ML20247F6721998-04-30030 April 1998 Monthly Operating Rept for Apr 1998 for Davis-Bess Nuclear Power Station,Unit 1 ML20249A4141998-04-30030 April 1998 Revised Monthly Operating Rept for Apr 1998 for Davis-Besse Nuclear Power Station,Unit 1 ML20216B4041998-03-31031 March 1998 Monthly Operating Rept for Mar 1998 for Davis-Besse Nuclear Power Station,Unit 1 ML20216C5131998-02-28028 February 1998 Monthly Operating Rept for Feb 1998 for Davis-Besse Nuclear Power Station,Unit 1 ML20202D3721998-01-31031 January 1998 Monthly Operating Rept for Jan 1998 for Davis-Besse Nuclear Power Station,Unit 1 ML20198K7931997-12-31031 December 1997 Monthly Operating Rept for Dec 1997 for Davis-Besse Nuclear Power Station,Unit 1 ML20203A3931997-11-30030 November 1997 Monthly Operating Rept for Nov 1997 for Davis-Besse Nuclear Power Plant,Unit 1 ML20198S5371997-10-31031 October 1997 Monthly Operating Rept for Oct 1997 for Davis-Besse Nuclear Power Station ML20217H7701997-09-30030 September 1997 Monthly Operating Rept for Sept 1997 for Davis-Besse Nuclear Power Station,Unit 1 ML20216H3261997-08-31031 August 1997 Monthly Operating Rept for August 1997 for DBNPS ML20217K0241997-07-31031 July 1997 Monthly Operating Rept for Jul 1997 for Davis Besse Nuclear Power Station,Unit 1 ML20140H0441997-05-31031 May 1997 Monthly Operating Rept for May 1997 for Davis-Besse Nuclear Power Station Unit 1 ML20141B9521997-04-30030 April 1997 Monthly Operating Rept for Apr 1997 for Davis-Beese Nuclear Power Station Unit 1 ML20137T5271997-03-31031 March 1997 Monthly Operating Rept for Mar 1997 for Davis-Besse Nuclear Power Station,Unit 1 ML20136G7221997-02-28028 February 1997 Monthly Operating Rept for Feb 1997 for Davis-Besse Nuclear Station Unit 1 ML20134L9831997-01-31031 January 1997 Monthly Operating Rept for Jan 1997 for Dbnps,Unit 1. W/Undated Ltr ML20133G0161996-12-31031 December 1996 Monthly Operating Rept for Dec 1996 for Davis-Besse Nuclear Power Station,Unit 1 ML20149M4071996-11-30030 November 1996 Monthly Operating Rept for Nov 1996 for Davis-Besse Nuclear Power Station Unit 1 ML20134P9821996-10-31031 October 1996 Monthly Operating Rept for Oct 1996 for Davis-Besse Nuclear Power Station,Unit 1 ML20128Q0611996-09-30030 September 1996 Monthly Operating Rept for Sept 1996 for Davis-Besse NPP, Unit 1 ML20117D5341996-07-31031 July 1996 Monthly Operating Rept for July 1996 for Davis-Besse Nuclear Power Station,Unit 1 ML20117D5411996-06-30030 June 1996 Revised MOR for June 1996 for Davis-Besse Nuclear Power Station,Unit 1 ML20116E0161996-06-30030 June 1996 Monthly Operating Rept for June 1996 for Davis-Besse Nuclear Station Unit 1 ML20113B9111996-05-31031 May 1996 Monthly Operating Rept for May 1996 for Davis-Beese Nuclear Power Station Unit 1 ML20117H7231996-04-30030 April 1996 Monthly Operating Rept for Apr 1996 for Davis-Besse Unit 1 ML20112E6061996-03-31031 March 1996 Monthly Operating Rept for Mar 1996 for David-Besse Nuclear Power Station,Unit 1 ML20101G5251996-02-29029 February 1996 Monthly Operating Rept for Feb 1996 for DBNPS Unit 1 ML20149K7711996-01-31031 January 1996 Monthly Operating Rept for Jan 1996 for Davis-Besse Nuclear Power Station.W/Undated Ltr ML20096C7971995-12-31031 December 1995 Monthly Operating Rept for Dec 1995 for Davis-Besse Nuclear Power Station Unit 1 ML20095H3761995-11-30030 November 1995 Monthly Operating Rept for Nov 1995 for Davis-Besse Nuclear Power Station Unit 1 ML20094L1041995-10-31031 October 1995 Monthly Operating Rept for Oct 1995 for Davis-Besse Nuclear Power Station Unit 1 ML20093J2341995-09-30030 September 1995 Monthly Operating Rept for Sept 1995 for Davis-Besse Nuclear Power Station ML20098A2651995-08-31031 August 1995 Monthly Operating Rept for Aug 1995 for Davis-Besse Nuclear Power Station,Unit 1 1999-09-30
[Table view] Category:TEXT-SAFETY REPORT
MONTHYEARML20217K1231999-10-14014 October 1999 Revised Positions for DBNPS & PNPP QA Program ML20217D5441999-09-30030 September 1999 Monthly Operating Rept for Sept 1999 for Davis-Besse Nuclear Power Station.With 05000346/LER-1998-011, :on 981014,manual Reactor Trip Occurred.Caused by Component Cooling Water Sys Leak.Breaker Being Installed Into D1 Bus cubicle.AACD1 Was Removed from Cubicle1999-09-0303 September 1999
- on 981014,manual Reactor Trip Occurred.Caused by Component Cooling Water Sys Leak.Breaker Being Installed Into D1 Bus cubicle.AACD1 Was Removed from Cubicle
ML20211R0811999-08-31031 August 1999 Monthly Operating Rept for Aug 1999 for Davis-Besse Nuclear Power Station,Unit 1.With 05000346/LER-1999-003, :on 990727,failure to Perform Engineering Evaluation for Pressurizer Cooldown Rate Exceeding TS Limit Was Noted.Caused by Inadequate Procedural Guidance.Provided Required Reading for Operators.With1999-08-26026 August 1999
- on 990727,failure to Perform Engineering Evaluation for Pressurizer Cooldown Rate Exceeding TS Limit Was Noted.Caused by Inadequate Procedural Guidance.Provided Required Reading for Operators.With
ML20211B0271999-08-13013 August 1999 SER Accepting Second 10-year Interval Inservice Insp Requests for Relief RR-A16,RR-A17 & RR-B9 for Plant, Unit 1 ML20210Q8541999-07-31031 July 1999 Monthly Operating Rept for July 1999 for Davis-Besse Nuclear Power Station,Unit 1.With ML20209E6231999-06-30030 June 1999 Monthly Operating Rept for June 1999 for Davis-Besse Nuclear Power Station,Unit 1.With 05000346/LER-1998-013, :on 981105,safety Valve Rupture Disks May Induce Excessive Eccentric Loading of Pressurizer Vessel Nozzles.Caused by Failure of RCS Pressure Boundary.Plant Mod Was Implemented in May of 1999.With1999-06-24024 June 1999
- on 981105,safety Valve Rupture Disks May Induce Excessive Eccentric Loading of Pressurizer Vessel Nozzles.Caused by Failure of RCS Pressure Boundary.Plant Mod Was Implemented in May of 1999.With
ML20212H9961999-06-22022 June 1999 Safety Evaluation Supporting Amend 233 to License NPF-3 ML20195K2871999-06-16016 June 1999 Safety Evaluation Accepting Licensee Response to GL 95-07, Pressure Locking & Thermal Binding of Safety-Related Power-Operated Gate Valves ML20207G6661999-06-0808 June 1999 Safety Evaluation Supporting Amend 232 to License NPF-3 ML20195F4871999-05-31031 May 1999 Monthly Operating Rept for May 1999 for Davis-Besse Nuclear Power Station,Unit 1.With ML20206U7371999-05-19019 May 1999 Safety Evaluation Supporting Amend 231 to License NPF-3 ML20207E8011999-05-19019 May 1999 Non-proprietary Rev 2 to HI-981933, Design & Licensing Rept DBNPS Unit 1 Cask Pit Rack Installation Project ML20207F4351999-05-0404 May 1999 Rev 1 to DBNPS Emergency Preparedness Evaluated Exercise Manual 990504 ML20206M6341999-04-30030 April 1999 Monthly Operating Rept for Apr 1999 for Davis-Besse Nuclear Station,Unit 1.With ML20205M2931999-03-31031 March 1999 Monthly Operating Rept for Mar 1999 for Davis-Besse Nuclear Power Station.With 05000346/LER-1999-002, :on 990208,both Trains of Emergency Ventilation Sys Were Rendered Inoperable.Caused by Unattended Open Door. Door Was Immediately Closed Upon Discovery.With1999-03-0505 March 1999
- on 990208,both Trains of Emergency Ventilation Sys Were Rendered Inoperable.Caused by Unattended Open Door. Door Was Immediately Closed Upon Discovery.With
ML20207J1461999-02-28028 February 1999 Monthly Operating Rept for Feb 1999 for Davis-Besse Nuclear Power Station,Unit 1.With ML20206U2441999-02-0909 February 1999 Safety Evaluation Supporting Amend 229 to License NPF-3 ML20199H5931999-01-20020 January 1999 Safety Evaluation Accepting Thermo-Lag Re Ampacity Derating Issues for Plant ML20204J6751998-12-31031 December 1998 1998 Annual Rept for Dbnps,Unit 1,PNPP,Unit 1 & BVPS Units 1 & 2 ML20199E2501998-12-31031 December 1998 Monthly Operating Rept for Dec 1998 for Davis-Besse Nuclear Power Station,Unit 1.With ML20205K5781998-12-31031 December 1998 Waterhammer Phenomena in Containment Air Cooler Swss ML20206B0101998-12-31031 December 1998 1998 Annual Rept for Firstenergy Corp, for Perry Nuclear Power Plant & Davis-Besse Nuclear Power Station.Form 10-K Annual Rept to Us Securities & Exchange Commission for Fiscal Yr Ending 981231,encl ML20197J3441998-11-30030 November 1998 Monthly Operating Rept for Nov 1998 for Davis-Besse Nuclear Power Station,Unit 1.With 05000346/LER-1998-012, :on 981018,reactor Trip Occurred from Approx 4% Power Due to ARTS Signal.Caused by Inadequate Design Drawing Resulting in Inadequate Procedure.Procedure Revised to Correct Deficiency.With1998-11-17017 November 1998
- on 981018,reactor Trip Occurred from Approx 4% Power Due to ARTS Signal.Caused by Inadequate Design Drawing Resulting in Inadequate Procedure.Procedure Revised to Correct Deficiency.With
05000346/LER-1998-009, :on 980909,RCS Pressurizer Spray Valve Was Not Functional with Two of Eight Body to Bonnet Nuts Missing. Caused by Less than Adequate Matl Separation Work Practices. Bonnet Nuts Replaced.With1998-11-13013 November 1998
- on 980909,RCS Pressurizer Spray Valve Was Not Functional with Two of Eight Body to Bonnet Nuts Missing. Caused by Less than Adequate Matl Separation Work Practices. Bonnet Nuts Replaced.With
05000346/LER-1998-011, :on 981014,manual RT Due to Ccws Leak Was Noted.Caused by Failure of One Letdown Cooler Rupture Disk. All Letdown Cooler Rupture Disks Were Replaced Prior to Plant Restart.With1998-11-13013 November 1998
- on 981014,manual RT Due to Ccws Leak Was Noted.Caused by Failure of One Letdown Cooler Rupture Disk. All Letdown Cooler Rupture Disks Were Replaced Prior to Plant Restart.With
ML20195D0001998-10-31031 October 1998 Monthly Operating Rept for Oct 1998 for Davis-Besse Nuclear Power Station,Unit 1.With ML20155B6781998-10-28028 October 1998 Safety Evaluation Accepting Proposed Reduction in Commitment Changes in QA Program Matl Receipt Insp Process 05000346/LER-1998-010, :on 980924,manual Reactor Trip Was Noted.Caused by Misdiagnosed Failure of Main FW Control Valve Solenoid Valve.Faulty Solenoid valve,SVSP6B1,was Replaced & Tested. with1998-10-26026 October 1998
- on 980924,manual Reactor Trip Was Noted.Caused by Misdiagnosed Failure of Main FW Control Valve Solenoid Valve.Faulty Solenoid valve,SVSP6B1,was Replaced & Tested. with
05000346/LER-1998-008, :on 981001,documented Proceduralized Guidance for Initiation of Post LOCA B Dilution Flow Path.Caused by Design Analysis Oversight.Revised Procedures to Provide Active B Dilution Flow Path Guidance.With1998-10-0101 October 1998
- on 981001,documented Proceduralized Guidance for Initiation of Post LOCA B Dilution Flow Path.Caused by Design Analysis Oversight.Revised Procedures to Provide Active B Dilution Flow Path Guidance.With
ML20154H5801998-09-30030 September 1998 Monthly Operating Rept for Sept 1998 for Davis-Besse Nuclear Power Station,Unit 1.With 05000346/LER-1998-007, :on 980824,CR Humidifier Ductwork Failure Caused Excessive Opening in Positive Pressure Boundary. Caused by Less than Adequate Fabrication.Evaluation of CR Humidifiers Conducted.With1998-09-22022 September 1998
- on 980824,CR Humidifier Ductwork Failure Caused Excessive Opening in Positive Pressure Boundary. Caused by Less than Adequate Fabrication.Evaluation of CR Humidifiers Conducted.With
ML20151W1611998-08-31031 August 1998 Monthly Operating Rept for Aug 1998 for Dbnps.With 05000346/LER-1998-006, :on 980624,loss of Offsite Power Was Noted. Caused by Tornado Damage to Switchyard.Tested & Repaired Affected Electrical & Mechanical Equipment Necessary to Restore Two Offsite Power Sources1998-08-21021 August 1998
- on 980624,loss of Offsite Power Was Noted. Caused by Tornado Damage to Switchyard.Tested & Repaired Affected Electrical & Mechanical Equipment Necessary to Restore Two Offsite Power Sources
ML20237E3171998-08-21021 August 1998 ISI Summary Rept of Eleventh Refueling Outage Activities for Davis-Besse Nuclear Power Station ML20237B1681998-07-31031 July 1998 Monthly Operating Rept for July 1998 for Davis-Besse Nuclear Power Station,Unit 1 ML20236U5011998-07-23023 July 1998 Special Rept:On 980624,Unit 1 Site Damaged by Tornado & High Winds.Alert Declared by DBNPS Staff,Dbnps Emergency Response Facilities Activiated & Special Insp Team Deployed to Site by Nrc,As Result of Event ML20236R1441998-07-15015 July 1998 SER Related to Quality Assurance Program Description Changes for Davis-Besse Nuclear Power Station,Unit 1 05000346/LER-1998-004, :on 980601,ductwork for Number 2 Control Room Humidifier Found Disconnected from Humidifier.Caused by Less than Adequate Connection at Humidifier Blower Housing. Ductwork Repaired1998-07-13013 July 1998
- on 980601,ductwork for Number 2 Control Room Humidifier Found Disconnected from Humidifier.Caused by Less than Adequate Connection at Humidifier Blower Housing. Ductwork Repaired
05000346/LER-1998-005, :on 980601,both Low Pressure Injection/Dhr Pumps Were Rendered Inoperable During Testing.Caused by Inadequate Self Checking,Communication & Procedure Usage Work Practices.Operations Mgt Reviewed Expectations1998-07-11011 July 1998
- on 980601,both Low Pressure Injection/Dhr Pumps Were Rendered Inoperable During Testing.Caused by Inadequate Self Checking,Communication & Procedure Usage Work Practices.Operations Mgt Reviewed Expectations
ML20236M9411998-07-0707 July 1998 Safety Evaluation Supporting Amend 225 to License NPF-3 ML20236K3981998-06-30030 June 1998 SER Accepting in Part & Denying in Part Relief Requests from Some of ASME Section XI Requirements as Endorsed by 10CFR50.55a for Containment Insp for Davis-Besse Nuclear Power Station,Unit 1 ML20236N7451998-06-30030 June 1998 Monthly Operating Rept for June 1998 for Davis-Besse Nuclear Power Station,Unit 1 ML20236K4321998-06-30030 June 1998 Safety Evaluation Supporting Amend 224 to License NPF-03 ML20236K5131998-06-29029 June 1998 Safety Evaluation Accepting Proposed Alternate Emergency Operations Facility Location for Davis-Besse Nuclear Power Station,Unit 1 05000346/LER-1998-003, :on 980519,Mode 3 Entry Without Completion of Surveillance Requirement Occurred.Caused by Failure of I&C Technicians to Perform Each Sp as Written or Adherence. Revised Procedure1998-06-18018 June 1998
- on 980519,Mode 3 Entry Without Completion of Surveillance Requirement Occurred.Caused by Failure of I&C Technicians to Perform Each Sp as Written or Adherence. Revised Procedure
1999-09-30
[Table view] |
Text
_... _
l $ ?an=
Davis-Besse Nuclear Power Station j
yn 5501 North State Route 2
\\
Oak Harbor. Ohio 43449-9760 m
November 13,1998.
CCN: P-6-98-10 i
Document Control Desk U. S. Nuclear Regulatory Commission One White Flint North 11555 Rockville Pike Rockville, MD 20852-2738 Ladies and Gentlemen:
Monthly Operating Report, October 1998 Davis-Besse Nuclear Power Station Unit 1 Enclosed is a copy of the Monthly Operating Report for the Davis-Besse Nuclear Power Station for the month of Oeober 1998.
If you have any questions, please contact E. C. Matranga at (419) 321-8369.
l Very truly yours,
~ju s H. Lash Plant Manager Davis-Besse Nuclear Power Station ECM/ljk l
Enclosure p
cc:
. J. L. Caldwell NRC Region III Acting Administrator A. G. Hansen NRC Project Manager j
S. J. Campbell lh l
NRC Senior Resident Inspector
/
9811170269 981031 iM PDR ADOCK 05000345" R
PDRCe
.. r.
OPERATING DATA REPORT DOCKET NO.
50-0346 UNIT NAME Davis-Besse Unit 1 DATE November 9.1998 COMPLETED BY E. C. Matranaa TELEPHONE 419-321-8369 REPORTING PERIOD October.1998 YEAR IQ MONTH DATE CUMULATIVE 1 Design Electrical Rating (MWe-Net).
906 The nominal net electrical output of the unit specified by the utility and used for the purpose of plant design.
2 Maximum Dependable Capacity (MWe-Net).
873 The gross electrical output as measured at the output terminals of the turbine-generator during the most restrictive seasonal conditions minus the normal station service loads.
3 Number of Hours the Reactor Was Cntical.
624.6 5,827.7 120,259.9 The total number of hours during the gross hours of the reporting period that the reactor was critical.
4 Number of Hours the Generator Was On Line.
605.0 5,719.9 117,807.7 (Also called Service Hours). The total number of hours during the gross hours of the reporting period that the unit operated with breakers closed to the station bus.
The sum of the hours the generator was on line plus the total outage hours should equal the gross hours in the reporting period.
5 Unit Reserve Shutdown Hours.
0.0 0.0 5,532.0 The total number of hours during the gross hours of the reporting period ths; the unit was removed from service for economic or similar reasons but was available for i
operation.
6 Net Electrical Energy (MWH).
524,776 4,835,429 95,061,986 The gross electrical output of the unit measured at the output terminals of the turbine-generator minus the normal station service loads during the gross hours of the reporting period, expressed in mega-watt hours. Negative quantities should not be used.
^
DOCKET NO.'
50-346 k
UNIT NAME Davis-Besse #1 DATE_ November 9,1998 COMPLETED BY E. C. Mau^ ese REPORTING PERIOD: October.1998 TELEPHONE (419) 32't-8369 NO.
DATE TYPE DURATION REASON (1)
METHOD OF -
CAUSE/ CORRECTIVE ACTIONS F: FORCED.
(HOURS)
SHUTTING S: SCHEDULED DOWN (2)
COMMENTS 1998-11 10/14/98 F
A 2
Inadequate human interface design caused the loss of the essential 4160 bus. Improved guidance and additional barriers added. Failed rupture disk caused the CCW leak. A 146.9 modification was initiated for additional overpressure protection.
1998-12 10/18/98 F
F 3
Improper procedure sequence. Procedure was changed.
SUMMARY
Reactor power was maintained at approximately 100% full power for the majority of the month. On October 14,1998, at 1523 hours0.0176 days <br />0.423 hours <br />0.00252 weeks <br />5.795015e-4 months <br />, the reactor was manually tripped from 87% full power due to a Component Cooling Water leak that occurred following a loss and re-energization of an essential 4160 volt electrical bus. Following completion of required maintenance, a reactor startup was commenced and criticality achieved October 18, 1998, at 1636 hours0.0189 days <br />0.454 hours <br />0.00271 weeks <br />6.22498e-4 months <br />. An automatic reactor trip occured at 2152 hours0.0249 days <br />0.598 hours <br />0.00356 weeks <br />8.18836e-4 months <br /> due to mispositioning an Anticipatory Reactor Trip System (ARTS) switch during the startup. Following the completion of corrective action, the reactor was taken critical at 1904 hours0.022 days <br />0.529 hours <br />0.00315 weeks <br />7.24472e-4 months <br /> on October 19,1998. The Main Generator was synchronized to the grid at 1131 hours0.0131 days <br />0.314 hours <br />0.00187 weeks <br />4.303455e-4 months <br /> on October 20, and 100% full power was achieved at 2030 hours0.0235 days <br />0.564 hours <br />0.00336 weeks <br />7.72415e-4 months <br /> on October 21.1996 (1) Reason:
(2) Method:
A-Equipment Failure (Explain) 1-Manual '
B-Maintenance or Test 2-Manual Trip / Scram C-Refueling 3-Automatic Trip / Scram D-Regulatory Restriction 4-Continuation E-Operator Training & License Examin 5-Other (Explain)
F-Administrative G-Operational Error (Explain)
H-Other (Explain)
.