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Category:MONTHLY OPERATING ANALYSIS REPORT
MONTHYEARNOC-AE-000676, Monthly Operating Repts for Sept 1999 for South Texas Project,Units 1 & 2.With1999-09-30030 September 1999 Monthly Operating Repts for Sept 1999 for South Texas Project,Units 1 & 2.With NOC-AE-000643, Monthly Operating Repts for Aug 1999 for South Texas Project,Units 1 & 2.With1999-08-31031 August 1999 Monthly Operating Repts for Aug 1999 for South Texas Project,Units 1 & 2.With ML20210R3631999-07-31031 July 1999 Monthly Operating Repts for July 1999 for South Tx Project, Units 1 & 2.With NOC-AE-000593, Monthly Operating Repts for June 1999 for Stp,Units 1 & 2. with1999-06-30030 June 1999 Monthly Operating Repts for June 1999 for Stp,Units 1 & 2. with NOC-AE-000563, Monthly Operating Repts for May 1999 for Stp,Units 1 & 2. with1999-05-31031 May 1999 Monthly Operating Repts for May 1999 for Stp,Units 1 & 2. with NOC-AE-000543, Monthly Operating Repts for Apr 1999 for Stp,Units 1 & 2. with1999-04-30030 April 1999 Monthly Operating Repts for Apr 1999 for Stp,Units 1 & 2. with NOC-AE-000507, Monthly Operating Repts for Mar 1999 for Stp,Units 1 & 2. with1999-03-31031 March 1999 Monthly Operating Repts for Mar 1999 for Stp,Units 1 & 2. with NOC-AE-000468, Monthly Operating Repts for Feb 1999 for South Texas Project Electric Generating Station.With1999-02-28028 February 1999 Monthly Operating Repts for Feb 1999 for South Texas Project Electric Generating Station.With NOC-AE-000403, Monthly Operating Repts for Dec 1998 for South Texas Project Unit 1 & 2.With1998-12-31031 December 1998 Monthly Operating Repts for Dec 1998 for South Texas Project Unit 1 & 2.With NOC-AE-000385, Monthly Operating Repts for Nov 1998 for Stp,Units 1 & 2. with1998-11-30030 November 1998 Monthly Operating Repts for Nov 1998 for Stp,Units 1 & 2. with NOC-AE-000357, Monthly Operating Repts for Oct 1998 for STP Electric Generating Station,Units 1 & 2.With1998-10-31031 October 1998 Monthly Operating Repts for Oct 1998 for STP Electric Generating Station,Units 1 & 2.With NOC-AE-000329, Monthly Operating Repts for Sept 1998 for Stp,Units 1 & 2. with1998-09-30030 September 1998 Monthly Operating Repts for Sept 1998 for Stp,Units 1 & 2. with NOC-AE-000296, Monthly Operating Repts for Aug 1998 for South Texas Project,Units 1 & 2.With1998-08-31031 August 1998 Monthly Operating Repts for Aug 1998 for South Texas Project,Units 1 & 2.With NOC-AE-000256, Monthly Operating Repts for July 1998 for STP Electric Generating Station,Units 1 & 21998-07-31031 July 1998 Monthly Operating Repts for July 1998 for STP Electric Generating Station,Units 1 & 2 NOC-AE-000233, Monthly Operating Repts for June 1998 for Stp,Units 1 & 21998-06-30030 June 1998 Monthly Operating Repts for June 1998 for Stp,Units 1 & 2 NOC-AE-000202, Monthly Operating Repts for May 1998 for South Tx Project Electric Generating Station,Units 1 & 21998-05-31031 May 1998 Monthly Operating Repts for May 1998 for South Tx Project Electric Generating Station,Units 1 & 2 NOC-AE-000172, Monthly Operating Repts for Apr 1998 for South Texas Project Units 1 & 21998-04-30030 April 1998 Monthly Operating Repts for Apr 1998 for South Texas Project Units 1 & 2 ML20216G4911998-03-31031 March 1998 Monthly Operating Repts for Mar 1998 for South Texas Project,Units 1 & 2 NOC-AE-000108, Monthly Operating Repts for Feb 1998 for South Texas Project Electric Generating Station,Units 1 & 21998-02-28028 February 1998 Monthly Operating Repts for Feb 1998 for South Texas Project Electric Generating Station,Units 1 & 2 NOC-AE-000090, Monthly Operating Repts for Jan 1998 for South Tx Project, Units 1 & 21998-01-31031 January 1998 Monthly Operating Repts for Jan 1998 for South Tx Project, Units 1 & 2 NOC-AE-000061, Monthly Operating Repts for Dec 1997 for South Texas Project Electric Generating Station1997-12-31031 December 1997 Monthly Operating Repts for Dec 1997 for South Texas Project Electric Generating Station NOC-AE-000039, Monthly Operating Repts for Nov 1997 for South Texas Project Units 1 & 21997-11-30030 November 1997 Monthly Operating Repts for Nov 1997 for South Texas Project Units 1 & 2 ML20199K0571997-10-31031 October 1997 Monthly Operating Repts for Oct 1997 for South Texas Project Unit 1 & 2 ML20198J9221997-09-30030 September 1997 Monthly Operating Repts for Sept 1997 for South Texas Project,Units 1 & 2 ML20216H9651997-08-31031 August 1997 Monthly Operating Repts for Aug 1997 for South Texas Project Electric Generating Station,Units 1 & 2 ML20210K5201997-07-31031 July 1997 Monthly Operating Repts for July 1997 for STP ML20141H3041997-06-30030 June 1997 Monthly Operating Repts for June 1997 for South Tx Project, Units 1 & 2 ML20148K5871997-05-31031 May 1997 Monthly Operating Repts for May 1997 for South Texas Project Electric Generating Station Units 1 & 2 ML20141G2841997-04-30030 April 1997 Monthly Operating Repts for Apr 1997 for South Texas Project Electric Generating Station Units 1 & 2 ML20137X5811997-03-31031 March 1997 Monthly Operating Repts for Mar 1997 for South Tx Project Units 1 & 2 ML20137X6011997-02-28028 February 1997 Revised Monthly Operating Rept for Feb 1997 for South Tx Project Unit 2 ML20137B3981997-02-28028 February 1997 Monthly Operating Repts for Feb 1997 for STP ML20134M7421997-01-31031 January 1997 Monthly Operating Repts for Jan 1997 for South Texas Project Electric Generating Station,Units 1 & 2 ML20133P3191996-12-31031 December 1996 Monthly Operating Repts for Dec 1996 for South Texas Project Electric Generating Station,Units 1 & 2 ML20132C1301996-11-30030 November 1996 Monthly Operating Repts for Nov 1996 for South Texas Project Electric Generating Station Units 1 & 2 ML20134M7431996-10-31031 October 1996 Monthly Operating Repts for Oct 1996 for South Texas Project Electric Generating Station,Units 1 & 2 ML20129A5961996-09-30030 September 1996 Monthly Operating Repts for Sept 1996 for South Texas Project Units 1 & 2 ML20129A6361996-08-31031 August 1996 Monthly Operating Repts for Aug 1996 for South Texas Project Electric Generating Station ML20129A6541996-07-31031 July 1996 Revised Monthly Operating Rept for July 1996 for South Texas Project Electric Generating Station Unit 1 ML20116M6721996-07-31031 July 1996 Monthly Operating Repts for Jul 1996 for South Texas Project Electric Generating Station ML20115H0321996-06-30030 June 1996 Monthly Operating Repts for June 1996 for South Tx Project, Units 1 & 2 ML20112H9921996-05-31031 May 1996 Monthly Operating Repts for May 1996 for South Texas Project Electric Generating Station Units 1 & 2 ML20117G0101996-04-30030 April 1996 Monthly Operating Repts for April 1996 for STP ML20100R2861996-02-29029 February 1996 Monthly Operating Repts for South Texas Project Electric Generating Station Units 1 & 2 ST-HL-AE-0053, Monthly Operating Repts for Jan 1996 for STP1996-01-31031 January 1996 Monthly Operating Repts for Jan 1996 for STP ST-HL-AE-5277, Monthly Operating Repts for Dec 1995 for South Texas Project1995-12-31031 December 1995 Monthly Operating Repts for Dec 1995 for South Texas Project ST-HL-AE-5256, Monthly Operating Repts for Nov 1995 for STP Units 1 & 21995-11-30030 November 1995 Monthly Operating Repts for Nov 1995 for STP Units 1 & 2 ST-HL-AE-5239, Monthly Operating Repts for Oct 1995 for South Texas Project Units 1 & 21995-10-31031 October 1995 Monthly Operating Repts for Oct 1995 for South Texas Project Units 1 & 2 ST-HL-AE-5215, Monthly Operating Repts for Sept 1995 for South Tx Project1995-09-30030 September 1995 Monthly Operating Repts for Sept 1995 for South Tx Project ST-HL-AE-5178, Monthly Operating Repts for Aug 1995 for STP Electric Generating Station1995-08-31031 August 1995 Monthly Operating Repts for Aug 1995 for STP Electric Generating Station 1999-09-30
[Table view] Category:TEXT-SAFETY REPORT
MONTHYEARML20217K9441999-10-15015 October 1999 SER Accepting Util Alternative Proposed Relief Request RR-ENG-2-4 for Second 10-year ISI Interval at Stp,Units 1 & 2 Pursuant to 10CFR50.55a(a)(3)(i) ML20217K9151999-10-15015 October 1999 SER Authorizing Util Relief Request RR-ENG-2-3 for Second 10-year ISI Interval of Stp,Units 1 & 2 Pursuant to 10CFR50.55a(a)(3)(i) NOC-AE-000676, Monthly Operating Repts for Sept 1999 for South Texas Project,Units 1 & 2.With1999-09-30030 September 1999 Monthly Operating Repts for Sept 1999 for South Texas Project,Units 1 & 2.With ML20217D0531999-09-30030 September 1999 Rev 1 to STP Electric Generating Station Unit 2 Cycle 7 Colr ML20217D0481999-09-30030 September 1999 Rev 1 to STP Electric Generating Station Unit 1 Cycle 9 Colr ML20211P8411999-09-0909 September 1999 Safety Evaluation Supporting Alternative Proposed by Licensee to Surface Exam to Perform Boroscopic VT-1 Visual Exam of Pump Casing Welds within Pump Pits for Welds Covered by Relief Request RR-ENG-24 ML20211P7811999-09-0909 September 1999 SER Approving Second 10-year Interval Inservice Insp Program Plan Relief Request RR-ENG-2-8 (to Use Code Case N-491-2) for South Texas Project,Units 1 & 2 ML20211Q6731999-09-0909 September 1999 Safety Evaluation Accepting First 10-yr Interval ISI Program Plan Request for Relief from ASME Code Case N-498 NOC-AE-000643, Monthly Operating Repts for Aug 1999 for South Texas Project,Units 1 & 2.With1999-08-31031 August 1999 Monthly Operating Repts for Aug 1999 for South Texas Project,Units 1 & 2.With ML20212E5191999-08-31031 August 1999 Rev 3 to SG-99-04-005, STP 1RE08 Outage Condition Monitoring Rept & Final Operational Assessment ML20211F4531999-08-24024 August 1999 Safety Evaluation Supporting Licensee Proposed Alternative to Defer Partial First Period Exams of flange-to-shell Weld to Third Period & Perform Required Ultrasonic Exams,Both Manual & Automated,During Third Period ML20211F5111999-08-23023 August 1999 Safety Evaluation Supporting Licensee Proposed Alternative Contained in Request for Relief RR-ENG-30 ML20210C9411999-07-31031 July 1999 Rev 1 to SG-99-07-002, South Tx,Unit 1 Cycle 9 Voltage- Based Repair Criteria 90-Day Rept, Jul 1999 ML20210R3631999-07-31031 July 1999 Monthly Operating Repts for July 1999 for South Tx Project, Units 1 & 2.With ML20210D9161999-07-23023 July 1999 Safety Evaluation Accepting Inservice Testing Relief Request RR-56 Re Component Cooling Water & Safety Injection Sys Containment Isolation Check Valve Closure Test Frequency ML20210D4821999-07-21021 July 1999 1RE08 ISI Summary Rept for Steam Generator Tubing of South Texas Project Electric Generating Station Unit 1 ML20210D4491999-07-21021 July 1999 Revised Chapters to Operations QA Plan, Including Rev 9 to Chapter 1.0, Organization & Rev 6 to Chapter 16.0, Independent Technical Review NOC-AE-000583, LER 99-S03-00:on 990619,failure to Revitalize Sdg Number 11 Was Noted.Caused by Failure to Communicate Status of Sdg. Subject Sdg Revitalized on 990619 & Licensee Will Develop Security Force Instruction Re Sdgs.With1999-07-15015 July 1999 LER 99-S03-00:on 990619,failure to Revitalize Sdg Number 11 Was Noted.Caused by Failure to Communicate Status of Sdg. Subject Sdg Revitalized on 990619 & Licensee Will Develop Security Force Instruction Re Sdgs.With ML20207H6361999-07-0808 July 1999 Safety Evaluation Approving 2nd 10 Yr Interval ISI Program Plan Request to Use ASME Section XI Code Case N-546 for Licenses NPF-76 & NPF-80,respectively ML20216D7481999-07-0707 July 1999 1RE08 ISI Summary Rept for Welds & Component Supports of STP Electric Generating Station,Unit 1 NOC-AE-000593, Monthly Operating Repts for June 1999 for Stp,Units 1 & 2. with1999-06-30030 June 1999 Monthly Operating Repts for June 1999 for Stp,Units 1 & 2. with NOC-AE-000570, LER 99-S01-00:on 990527,discovered That Unescorted Access Had Been Inappropriately Granted.Caused by Failure to Follow Procedure.Util Verified That Individual Did Not Have Current Unescorted Access at STP or Any Other Util.With1999-06-28028 June 1999 LER 99-S01-00:on 990527,discovered That Unescorted Access Had Been Inappropriately Granted.Caused by Failure to Follow Procedure.Util Verified That Individual Did Not Have Current Unescorted Access at STP or Any Other Util.With ML20196G5821999-06-23023 June 1999 LER 99-S02-00:on 990601,failure to Maintain Positive Control of Vital Area Security Key Was Noted.Caused by Lack of Attention to Detail.Discussed Event with Operator Involved IAW Constructive Discipline Program ML20195J6871999-06-17017 June 1999 Safety Evaluation Supporting Proposed Alternative Contained in RR-ENG-2-5.Proposed Alternative Authorized Per 10CFR50.55a(a)(3)(i) for 2nd ISI Interval ML20196A2391999-06-15015 June 1999 Change QA-042 to Rev 13 of Operations QAP, Reflecting Current Organizational Alignment for South Texas Project & Culminating Organizational Realigment That Has Been Taking Place During Past Several Months NOC-AE-000563, Monthly Operating Repts for May 1999 for Stp,Units 1 & 2. with1999-05-31031 May 1999 Monthly Operating Repts for May 1999 for Stp,Units 1 & 2. with ML20206U5411999-05-18018 May 1999 Non-proprietary Errata Pages for Rev 2,Addendum 1 to WCAP-13699, Laser Welded Sleeves for 3/4 Inch Diamete Tube Feedring Type & W Preheater SGs Generic Sleeving Rept ML20206A7721999-04-30030 April 1999 STP Electric Generating Station Unit 1 Cycle 9 Colr NOC-AE-000543, Monthly Operating Repts for Apr 1999 for Stp,Units 1 & 2. with1999-04-30030 April 1999 Monthly Operating Repts for Apr 1999 for Stp,Units 1 & 2. with ML20205H0321999-03-31031 March 1999 Change QA-040 to Rev 13 of Operations QA Plan NOC-AE-000507, Monthly Operating Repts for Mar 1999 for Stp,Units 1 & 2. with1999-03-31031 March 1999 Monthly Operating Repts for Mar 1999 for Stp,Units 1 & 2. with ML20205A3781999-03-22022 March 1999 STP Electric Generating Station Simulator Certification Four Yr Rept for Units 1 & 2 ML20204B2711999-03-15015 March 1999 Safety Evaluation Authorizing 990201 Request to Authorize Alternative to Regulations Per 10CFR50.55a(a)(3)(i) That Would Revise Start of Second 120-month IST Interval to No Later than 011201 ML20207M9231999-03-12012 March 1999 Amended Part 21 Rept Re Cooper-Bessemer Ksv EDG Power Piston Failure.Total of 198 or More Pistons Have Been Measured at Seven Different Sites.All Potentially Defective Pistons Have Been Removed from Svc Based on Encl Results NOC-AE-000468, Monthly Operating Repts for Feb 1999 for South Texas Project Electric Generating Station.With1999-02-28028 February 1999 Monthly Operating Repts for Feb 1999 for South Texas Project Electric Generating Station.With ML20207D1101999-02-24024 February 1999 Change QA-039 to Rev 13 of Operations QA Plan, for STP ML20203H8361999-02-17017 February 1999 Safety Evaluation Supporting Request for Relief from ASME Code Requirements for Class 3 Piping for Plant ML20202H9621999-02-0303 February 1999 SER Accepting Change to EALs Used in Classification of Emergency Conditions ML20202E8471999-01-31031 January 1999 2RE06 ISI Summary Rept for SG Tubing of STP Electric Generating Station,Unit 2 ML20216G2011999-01-31031 January 1999 City Public Svc of San Antonio Annual Rept 1998-1999 ML20199G5961999-01-31031 January 1999 Cycle 7 Voltage-Based Repair Criteria Rept for Jan 1999 ML20199K7711999-01-21021 January 1999 Safety Evaluation Accepting ISI Program Request for Relief for ASME Cose Repair Requirements for Code Class 3 Piping ML20199G8161999-01-19019 January 1999 SER Accepting Util 970707 Response to NRC 970509 RAI Re GL 92-08, Thermo-Lag 330-1 Fire Barriers. NRC Finds No Significant Safety Hazards Based on Application of Util Ampacity Derating Methodology ML20199H4981999-01-11011 January 1999 2RE06 ISI Summary Rept for Welds & Component Supports of Stp,Unit 2 ML20206Q3751999-01-0404 January 1999 2RE06 ISI Summary Rept for Sys Pressure Tests (Class 1 & 2) ML20206Q3721999-01-0404 January 1999 2RE06 ISI Summary Rept for Repairs & Replacements ML20216G2171998-12-31031 December 1998 Houston Industries 1998 Annual Rept. App a 1998 Financial Statements & Us Securities & Exchange Commission Form 10-K Encl NOC-AE-000403, Monthly Operating Repts for Dec 1998 for South Texas Project Unit 1 & 2.With1998-12-31031 December 1998 Monthly Operating Repts for Dec 1998 for South Texas Project Unit 1 & 2.With ML20216G1521998-12-31031 December 1998 Central & South West Corp 1998 Summary Annual Rept & Securities & Exchange Commission Form 10-K ML20198M3431998-12-28028 December 1998 SER Accepting Util Request for Relief from ASME Code Repair Requirements for ASME Code Class 3 Piping for South Texas Project,Unit 2 1999-09-09
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c o mp a ny llouston Lighting & PowerJD "d' Tesa. Pn>jni I:luniy Gwyaijng gathin y>.g nosyn w ad. won ti, 'I m. 7 7 m May IS. 1991 ST-HL-AE-3772 File No. 002 10CFR50.71 U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555 South Texas Project Electric Generating Station Units 1 & 2 Docket Nos. STN 50-498 & 50-499 Monthly Operating Reports for April. 1991 Pursuant to 10CFR50,71(a) and South Texas Project Electric Generating Station (STPEGS) Technical Specification 6.9.1.5, attached are the Monthly Operating Reports for April, 1991, If you should have any questions on this matter, please contact Mr. C. A. Ayala at (512) 972-8628, 9 VAR- .
William J . Jump Manager Nuclear Licensing MPJ/kmd Attachments: 1) STPEGS Unit 1 Monthly Operating Report - April, 1391
- 2) STPEGS Unit 2 Monthly Operating Report - April, 1991 4 1 l.
RREP\91071001,112 A Subsidiary of Houston Industries incorporated ,
I 910S210225 910430 +'
l POR ADOCK 05000498 R PDR
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L L ST HL AE 3772 llou'ston Light.ing & Power Company File No. : CO2 South Texas Project Electric Generating Stat.ion p,g, cc:
Regional-Administrator, Region IV Rufus S, Scott Nuclear Regulatory-Commission. Associate Ceneral Counsel 611 Ryan Plaza Drive, Suite 1000 Houston Lighting & Power Company Arlington, TX 76011 P. O. Box 61867 Houston, TX 77208 George Dick, Project Manager U.S. Nuclear Regulatory Commission INPO Washington, DC 20555 Records Center 1100 Circle 75 Parkway J._I Tapia Atlanta, CA 30339-3064 Senior Resident Inspector c/o U. S. Nuclear Regulatory Dr. Joseph M. Hendrie Commission 50 Be11 port Lane P. O. Box 910 Bellport, NY 11713 Bay City,_TX 77414 D. K. Lacker
-J. R. Newman, Esquire- Bureau of Radiation Control Newman & Holtzinger, P.C. Texas Department of Health 1615-L Street, N.W. 1100 West 49th Street Washington, DC 20036 Austin, TX 78756-3189 D. E. Ward /T M. Puckett Central Power and Light Company P. O. Box 2121 Corpus Christi, TX 78403 J, C. Lanier/M. B. Lee City _of Austin Electric _ Utility Department P.O.EBox 1088 Austin, TX -78767 R. J. Costello/M. T. liardt City _Public Service Board P. O. Box 1771 San Antonio,_TX- 78296 Revised 01/29/91 L4/NRC/
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- 0F L SOUTH TEXAS PROJECT ELECTRIC GENERATING STATI0ll UNIT 1 MONTHLY OPERATING REPORT APRIL 1991 HOUSTON LIGHTING AND POWER CO.
.NRC DOCKET No. 50 498 LICENSE NO. NPF-76 Reviewed : 5!7h]
Supervisor Date Reviewed By: h 'rf W l'/f/P/ .
Plant Ertgineerin Manager Date j Approved By: CU A ff/3f4t Plant Mq. nager Date
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, . s ATTACHMENT l-ST-HL AE- 5 77 A PAGE A 0F 6____
i Monthly SummgIy Following a refueling outage, STPEGS Unit I was returned to service for normal operation on 4/4/91 at 2249. On 4/9/91 at 0546 the plant was taken to l Mode 3 as per technical specification requirements due to the failure of the "D" I train Feedwater Isolation Valve to stroke during surveillance testing. The solenoids were disassembled revealing the presence of gel which prevented the valve from stroking. Root cause inspection identified the depletion of the desiccant filter on top of the valve reservoir as being the cause of the gel formation. The filters were replaced and the unit returned to service on 4/11/91 at 2117.
The unit tripped on 4/12/91 at 0416 following the failure of the Rod Drive Motor Generator sets. Investigation determined the cause to be the failure of a timer relay in one of the motor generator sets which caused instability in the voltage regulator operation of the other generator set. The relay was replaced and the unit returned to service on 4/13/91 at 2303.
The unit operated for the remainder of the reporting period with no shutdowns or significant power reductions.
Y AII ACHMENl I i ST-HL- AE- 3771 l PAGE 3 _ 0F . B . .
OPERATING DATA REPORT l
DOCRET NO. 50-498 UNIT 1 DATE May. 7. 1991 COMPLETED BY A.P. Rent TELEP110NE 512/972-7786 OPERATING STATUS 719
- 1. REPORTING PERIOD: 04/01 -04/30 GROSS 110URS 3800 IN REPORTING PERIOD:
- 2. CURRENTLY AUTHORIZED POWER LEVEL (MWt):
MAX. DEPEND. CAPACITY (MWe-Net): 1250.61250.6 DESIGN ELECTRICAL RATING (MWe-Net): None__
- 3. POWER LEVEL TO VilICll RESTRICTED N/A
('F ANY)(MWe Net):
- 4. REASONS FOR RESTRICTION (IF ANY):
Tills MONTil YR TO DATE CUMULATIVE
.. 631.4 640.5 14421.6
- 5. NUMBER OF HOURS REACTOR VAS CRITICAL.
0 0 0
- 6. REACTOR RESERVE SliUTDOWN ll0URS. .
.... 526.9 526.9 13668.3
- 7. Il0URS GENERATOR ON LINE. . .
0 0 0
- 8. UNIT RESERVE SHUTDOWN 110URS. ,
1648852 49327060
- 9. GROSS THERMAL ENERGY GENERATED (HWt) . . . .1648852 544880 544880 16642370 10, GROSS ELECTRICAL ENERGY GENERATED (MWil) .
506735 470842 15595325
- 11. NET ELECTRICAL ENERGY GENERATED (MWH)..
87.9% 22.2% 61.4%
- 12. REACTOR SERVICE FACTOR.
87.0% 22.2% 61.4%
- 13. REACTOR AVAILABILITY FACTOR.
73.3% 18.3% 58.2%
- 14. UNIT SERVICE FACTOR.... .
73.3% 18.3% 58.2%
- 15. UNIT AVAILABILITY FACTOR.
56.4% 13.11 53.1%
- 16. UNIT CAPACITY FACTOR (Using MDC). ..
56.4% 13.1% 53.1%
- 17. UNIT CAPACITY FACTOR (Using Design MWe).
16.8% 45.6% 17 ._3 %
- 18. UNIT FORCED OlJTAGE RATE.
- 19. SHUTDOWNS ScilEDULED OVER NEXT 6 MONTilS (TYPE, DATE, AND DURATION OF EACH):
N/A N/A
- 20. IF SHUT DOWN AT END OF REPORT PERIOD, ESTIMATED DATE OF STARTUP:
TTACHMENTI ST-ill-AE- 37 71 AVERAGE DAILY UNIT POWER LEVEL PAGE -'i 0F B DOCKET NO. 50 498 UNIT 1 DATE May. 6. 1991 COMPLETED BY A.P. Kent l
i TELEPHONE 512/972-7786 i
MONTH APRIL DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY PCVER LEVEL I
(MWe-Net) (MWe-Net)
-1 0 17 945
-2 0 18 992 3 0 19 1206 4- 6 20 1243 5 241 21 1247 6 301 22 1247 7 605 23 1248 8 918 24 1253 9 66 25 1250 g 10 0 26 1250 11 0 27 1232 l
12 17 28 1250 13 0 29 1250 14 .
504 30 1252 15 937 31 N/A 16 942 i
UNIT SHUTDOVNS AND POWER REDUCTIONS '
. i DOCKET NO. 50-498 '
UNIT 1 DATE May. 6. 1991 i COMPLETED BY A.P. Kent TELEPHONE 512/972-7786 REPORT MONTH APRIL i
1 2 3 4 5 No. Date Type Duration Reason Method of Licensee System- Component Cause & Corrective Action to (Hours) Shutting Event Code Code Prevent Recurrence.
Down Report #
Reactor
- 91-01 910115 S 83.5 C 4 N/A N/A N/A Refueling and scheduled maintenance ;
outage.
91-02 910404 S 2.4 B 9 N/A N/A N/A Turbine overspeed trip test. ;
I 91-03 910409 F 63.5 D 1 1-91-011 .SJ ISV The "D" train FWIV failed to stroke i during its first weekly surveillance i l
following 1REO3. The valve eventually I stroked but the reason for the failure was i l unknown. The valve was placed on a daily stroke frequency and.again failed to !
stroke. Technical specifications .uired !
the plant to be taken to Mode 3. inspec- t tion revealed the presence of gel which .;
prevented the "D" train valve from. ;
stroking. Chemistry samples had been-taken on the FWIV hydraulic fluid on 3/19/91 and sent offsite for analysis.
Analysis identified a high water contuac [
but analytical results were not ,a u) 3> l
?> -a n !
?EIk 1 2 3 4 5 E# I F: Forced Reason: Method: IEEE 805-1983 IEEE 903A-l ?S 36, E I S: Scheduled A-Equipment Failure (Explain) 1-Manual hA[g5E B-Maintenance or Test 2-Manual Scram cy;j-4 !
C-Refueling 3-Automatic Scram 71 p3 - !
D-Regulatory Restriction 4-Cont. of Existing I CD E-Operator Training & License Exam Outage >
F-Administrative 5-Reduction G-Operational Error (Explain) 9-Other i H-Other (Explain)
UNIT SHUTDOW2S AND POWER REDUCTIONS -
DOCKET NO. 50-498' ,
UNIT 1 DATE May 6. 1991 ;
COMPLETED BY A.P. Kent TELEPHONE 512/972-7786 REPORT MONTH APRIL ;
No. .Date Type Duration Reason Method of Licensee System Component Cause & Corrective Action to (Hours) Shutting Event Code Code Prevent Recurrence i Down Report # ,
Reactor transmitted to the site prior to the valve ,
failure. A root cause inspection identi-fled that the desiccant filter on top of l
the reservoir was depleted. The solenoid pilot valves on the "D" train FWIV were changed out, the hydraulic system flushed and the desiccant filter replaced. The inspection of desiccant filters on all' other FWIV's indicated various degrees of depletion; new filters were installed. i Corrective actions to prevent recurrence include improving analysis, maintenance and testing methods.
91-04 910412 F 42.7' A 3 1-91-012 AA RLY The unit tripped from 40% reactor power' on negative rate following the loss of both Rod Drive Motor Generator (RDMG)
. sets. The 2R timer had a defective output switch. Intermittent pick-up and' drop-vuc i of the 2R relay caused instability in-she?? -a>1 -
;InfE p(
1 2 3 4 5 $1 F: Forced Reason: Method: IEEE 805-1983 IEEE 803A-1 98313C 1-Manual S: Scheduled A-Equipment Failure (Explain)
B-Maintenance or Test 2-Manual Scram g-c3 y '
{{ l C-Refueling Automatic Scram mN" D-Regulatory Restriction 4-Cont. of Existing 'gp E-Operator Training & License Exam Outage F-Administrative 5-Reduction .
G-Operational Error (Explain) 9-Other H-Other (Explain) 1
UNIT SHUTDOWNS AND POWER REDUCTIONS . ,
DOCKET NO. 50-498 .
UNIT 1 .,
DATE May 6. 1991
- COMPLETED BY A.P. Kent TELEPHONE 512/972-7786 REPORT MONTH APRIL No. Date Type Duration Reason Method of Licensee System Component Cause & Corrective Action to (Hours) Shutting Event Code Code Prevent Recurrence Down Report #
Reactor i voltage regulator operation for RDMG =12.
The instability resulted in transients that caused a reverse current trip of RDMG all. As the timer switch continued to degrade the field current and output volt-age was lost on RDMG *12. The loss of both power sources to the Reactor Trip Switch-gear resulted in a reactor trip. The 2R relay timer and control relay were r, placed and a feedback. form was submitted for a more detailed check of these timer switches during outage PMs.
1 1 S om>l F: Forced Reason: Method: IEEE 805-1983 IEEE 803A-1983 b5]22df S: Scheduled A-Equipment Failure (Explain) 1-Manual "'( fh B-Maintenance or Test 2-Manual Scram .
[$ }j C-Refueling 3-Automatic Scram '
rn D-Kegulatory Restriction 4-Cont. of Existing '
hj55 E-Operator. Training & License Exam Outage SS 4, ,
F-Administrative 5-Reduction , bd
'C-Operational. Error (Explain) 9-Other. I CD H-Other (Explain) l-
+
i
ATTACHMENT t ST HL lie. 3772.
PAGF - B ~
0F B f0RVs and Safety Valves Sunduary There were no PORV or Safety Valves challenged during the reporting period.
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All ACHMENT A ST HL AE- 31n PAG E _ L.__ 0 F _t._.
SOUTil TEXAS PROJECT ELECTRIC GENERATING STATION UNIT 2 MONTilLY OPERATING REPORT APRIL 1991 Il0USTON LIGitTING AND POWER CO.
NRC DOCKET NO. 50-499 LICENSE NO. NPF-80 Reviewe y: -
- S ' 7 !4 i Supervisor Date Reviewed By:*# bf -
'F/ 9 / 9 7 PfanykSintering na,er Date Apptoved By Mih ~, s I!/ 9/
Plant Ma uiger 'Date
Ail ACAMENI 2 ST Hl. AE- 311'A 4
Honthly Summary PAGE A- 0F G--
STPECS Unit 2 was returned to service for normal operation on 4/2/91 at 0716 following a trip that occurred on 3/30/91. The unit operated for the remainder of the reporting period with no shutdowns or significant power reductions.
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. ST til. AE- 3'l" PAGE._3_ OF h ..
OPERATING DATA REPORT DOCKET NO. 50 499 UNIT 2 DATE May. 7. 1991 COMPLETED BY A.P. Kent TELEPilONE $12/972 778h OPERATING STATUS
- 1. REPORTING PERIOD: (M/0.1 Q'iHQ CROSS ll0URS IN REPORTING PERIOD: 719
- 2. CURRENTLY AUTil0RIZED POWtP. LEVEL (MWt): 3800 l HAX. DEPEND. CAPACITY (MWe Net): 1250.6 DESIGN ELECTRICAL RATING (MWe Net): 1250.6
- 3. POWER LEVEL TO WilICll RESTRICTED (IF ANY)(MVe Net): None 1
- 4. REASONS FOR RESTRICTION (IF ANY): N/A TilIS MONTil YR TO DATE CUMUIATIVE l
- 5. NUMBER OF !!OURS REACTOR WAS CRITICAL. . . . . 719.0 2784.5 11765.8
- 6. REACTOR RESERVE SilVTDOWN ll0URS .......... 0 0 0
- 7. Il0URS CENERATOR ON LINE.................. 687.7 2690.6 11036.2 l 2
- 8. UNIT RESERVE SilUTDOWN 1100RS . . . . . . . . . . . . . . 0 0 0
- 9. CROSS TilERMAL ENERGY GENERATED (MWt).... 2578032 9984814 39690082
- 10. CROSS ELECTRICAL ENERGY CENERATED (MVil)., 873470 3390780 _ 13413250
- 11. NET ELECTRICAL ENERCY CENERATED (MWili . . . . 835220 3239149 12687917
- 12. REACTOR SERVICE FACTOR.................. 100.01 96.7% 72.0%
- 13. REACTOR AVA11 ABILITY FACTOR . . . . . . . . . . . . . . 100.0% 96.7% 72.0%
- 14. UNIT SERVICE FACT 0R.................... . 95.7% 93.5% 67.5%
- 15. UNIT AVAILABILITY FACTOR................. 95.7% 93.5% 67.5%
- 16. UNIT CAPACITY FACTOR (Using MDC)......... 92 9JL 90.0% 62.1%
- 17. UNIT CAPACITY FACTOR (Using Design MWe).. 92.9% 90.0% 62.1%
- 18. UNIT FORCED OUTACE RATE........ ... ..... 4.3% 6.5% 17.9%
- 19. SliUTDOWNS SCliEDULED OVER NEXT 6 MONTHS (TYPE, DATE AND DURATION OF EACli):
Refueling and scheduled maintenance outage to begin September 28, 1991.
- 20. IF SMUT DOWN AT END OF REPORT PERIOD, ESTIMATED DATE OF STARTUP: N/A
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ATI ACHMEtiT 2.
ST-HL AE 3111 FAGE__4 _ 0F_k~ = - ~-
AVERAGE DAILY UNIT POWER LEVEL-DOCKET NO. 50 499 UNIT 2 DATE Mav. 7. 1991 COMPLETED BY A.P. Kent TELEPilONE 512/972-11% )
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MONTil APRIL DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY TOWER LEVEL (MWe Net) (MWo Net) 1 0 17 1248 2 196 18 1246 3 1067 19 1246 4 1243 20 1245 5 1246 21 1246 6 1237 22 1247 ._
7 1252 23 1246 8 1254 24 1246 9 1246 25 1250 10 1242 26 1244 11 1239 27 1248 12 1242 28 1248 13 1239 29 1247
_14 1249 30 1243 15 1248 31 __
N/A 16 1249 r
- , . . . , . - . . . , . , ., -. , . . - . . . . . -. ..~n .. . . _ . . . . . . _ . , . . - . ., , . . - . , , . , - . - . - . . ,
4 1
UNTI SHUTDOWNS AND FOWER REDUCTIONS ;
. DOCKET NO. 50-499 i UNIT 2 DATE May. 7. 1991 COMPLETED BY A.P. Kent TELEPHONE 512/972-7786 REPORT MONTH APRIL 1 2 3 4 5 No. Date Type Duration Reason Method of Licensee System Component Cause & Corrective Action to (Hours) Shutting Event Code Code Prevent Recurrence i Down Report
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91-05 910330 F 11.3 A 4 2-91-004 EL RLY-86 Reactor /Turbir.2 trip due to Main l Cenerator Lockout. The lockout occurred at the same time Unit I closed switchyard l breaker Y510. The actuation of the Main l Cenerator Isophase Bus relay and
{ subsequent Main Generator Lockout was i
caused by a difference in the saturation rates of the Current Transformers
- l. associated with the Isophase Bus Relay.
! The evaluation of the test data {
j collected for the Main Generator Isophase ~
Bus relay and the associated Current Trans formers is expected to be completed by July 31. 1991. Temporary modifications have been implemented to remove the trip capability of the Isophase Bus relays. An' i'
evaluation will be completed by September.
1991 to determine methods to minimire current transients during switchyard cirp- g cuit breaker switching operations.
'1 ::9 t-,33),
1 2 3 4 5 f'if "
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{j F: Forced Reason: Method: IEEE 805-1983 IEEE 803A-1983 -p E- fr. --
S: Scheduled A-Equipment Failure (Explain) 1-Manual : l (p hii B-Maintenance or Test 2-Manual Scram ; -$ ~C C-Refueling 3-Automatic Scram L 7' v> L)
D-Regulatory Restriction 4-Cont. of Existing , [g-
, E-Operator Training & License Exam Outage , ,
F-Administrative 5-Reduction [j G-Operational Error (Explain) 9-Other !
, H-Other (Explain) i '
4 ..
ATTACHMENT 2 ST-Hl AE-3771 f0RVs and Safety Valves Summary .. . ' ' . -: r _. h__,,__
There were no PORV or Safety Valves challenged during the reporting period. j l
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