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Category:MONTHLY OPERATING ANALYSIS REPORT
MONTHYEARML20217G3721999-09-30030 September 1999 Monthly Operating Repts for Sept 1999 for Sequoyah Nuclear Plant.With ML20212C4761999-08-31031 August 1999 Monthly Operating Repts for Aug 1999 for Sequoyah Nuclear Plant.With ML20216E3781999-07-31031 July 1999 Monthly Operating Repts for July 1999 for Sequoyah Nuclear Plant,Units 1 & 2.With ML20209H3831999-06-30030 June 1999 Monthly Operating Repts for June 1999 for Sequoyah Nuclear Plant.With ML20195K2951999-05-31031 May 1999 Monthly Operating Repts for May 1999 for Sequoyah Nuclear Plant,Units 1 & 2.With ML20206R5031999-04-30030 April 1999 Monthly Operating Repts for April 1999 for Sequoyah Units 1 & 2.With ML20205P9811999-03-31031 March 1999 Monthly Operating Repts for Mar 1999 for Sequoyah Nuclear Plant,Units 1 & 2.With ML20204C3111999-02-28028 February 1999 Monthly Operating Repts for Feb 1999 for Sequoyah Nuclear Plant,Units 1 & 2.With ML20199G3641998-12-31031 December 1998 Monthly Operating Repts for Dec 1998 for Sequoyah Nuclear Plant,Units 1 & 2.With ML20197K1161998-11-30030 November 1998 Monthly Operating Repts for Nov 1998 for Sequoyah Nuclear Plant,Units 1 & 2.With ML20195F8061998-10-31031 October 1998 Monthly Operating Repts for Oct 1998 for Sequoyah Nuclear Plant.With ML20154H6091998-09-30030 September 1998 Monthly Operating Repts for Sept 1998 for Sequoyah Nuclear Plant,Units 1 & 2.With ML20153B0881998-08-31031 August 1998 Monthly Operating Repts for Aug 1998 for Sequoyah Nuclear Plant.With ML20237B5221998-07-31031 July 1998 Monthly Operating Repts for July 1998 for Snp ML20236R0051998-06-30030 June 1998 Monthly Operating Repts for June 1998 for Sequoyah Nuclear Plant ML20249A8981998-05-31031 May 1998 Monthly Operating Repts for May 1998 for Sequoyah Nuclear Plant,Units 1 & 2 ML20247L5141998-04-30030 April 1998 Monthly Operating Repts for Apr 1998 for Sequoyah Nuclear Plant ML20217E2221998-03-31031 March 1998 Monthly Operating Repts for Mar 1998 for Sequoyah Nuclear Plant ML20248L2611998-02-28028 February 1998 Monthly Operating Repts for Sequoyah Nuclear Plant,Units 1 & 2 ML20202J7911998-01-31031 January 1998 Monthly Operating Repts for Jan 1997 for Sequoyah Nuclear Plant,Units 1 & 2 ML20199A2931997-12-31031 December 1997 Revised Monthly Operating Rept for Dec 1997 for Sequoyah Nuclear Plant,Units 1 & 2 ML20198M1481997-12-31031 December 1997 Monthly Operating Repts for Dec 1997 for Sequoyah Nuclear Plant,Units 1 & 2 ML20197J1011997-11-30030 November 1997 Monthly Operating Repts for Nov 1997 for Sequoyah Nuclear Plant,Units 1 & 2 ML20199C7201997-10-31031 October 1997 Monthly Operating Repts for Oct 1997 for Sequoyah Nuclear Plant ML20198J8941997-09-30030 September 1997 Monthly Operating Repts for Sept 1997 for Sequoyah Nuclear Plant,Units 1 & 2 ML20216J6011997-08-31031 August 1997 Monthly Operating Repts for Aug 1997 for Sequoyah Nuclear Plant ML20210K5781997-07-31031 July 1997 Monthly Operating Rept for Jul 1997 for Sequoyah Nuclear Plant ML20141H3071997-06-30030 June 1997 Monthly Operating Repts for June 1997 for Sequoyah Nuclear Plant,Units 1 & 2 ML20140H1571997-05-31031 May 1997 Monthly Operating Repts for May 1997 for SQN ML20141F4321997-04-30030 April 1997 Monthly Operating Repts for Apr 1997 for Sequoyah Nuclear Plant Units 1 & 2 ML20137T3011997-03-31031 March 1997 Monthly Operating Repts for March 1997 for SQN ML20136H2191997-02-28028 February 1997 Monthly Operating Repts for Feb 1997 for SQN ML20134M2001997-01-31031 January 1997 Monthly Operating Repts for Jan 1997 for SQN ML20133K4861996-12-31031 December 1996 Monthly Operating Repts for Dec 1996 for Sequoyah Nuclear Plant Units 1 & 2 ML20133A1121996-11-30030 November 1996 Monthly Operating Repts for Nov 1996 for SQN Plant ML20134N2501996-10-31031 October 1996 Monthly Operating Repts for Oct 1996 for Sequoyah Nuclear Plant ML20128Q0251996-09-30030 September 1996 Monthly Operating Repts for Sept 1996 for Sequoyah Nuclear Plant,Units 1 & 2 ML20129C2181996-08-31031 August 1996 Monthly Operating Rept for Aug 1996 for Sequoyah Nuclear Plant ML20116M1511996-07-31031 July 1996 Monthly Operating Repts for July 1996 for Sequoyah Nuclear Plant ML20115H0371996-06-30030 June 1996 Monthly Operating Repts for June 1996 for SQN ML20112H6351996-05-31031 May 1996 Monthly Operating Repts for May 1996 for Sequoyah Nuclear Plant ML20112A7901996-04-30030 April 1996 Monthly Operating Rept for Apr 1996 for Sequoyah Unit 1 & 2 ML20107B7591996-03-31031 March 1996 Monthly Operating Repts for Mar 1996 for Sequoyah Nuclear Plant,Units 1 & 2 ML20101D3351996-02-29029 February 1996 Monthly Operating Repts for Feb 1996 for Sequoyah Nuclear Plant ML20149K2341996-01-31031 January 1996 Monthly Operating Repts for Jan 1996 for Snp ML20096F0201995-12-31031 December 1995 Monthly Operating Repts for Dec 1995 for Snp ML20095J0461995-11-30030 November 1995 Monthly Operating Repts for Nov 1995 for Snp ML20094L7381995-10-31031 October 1995 Monthly Operating Repts for Oct 1995 for Sequoyah Nuclear Plant ML20093F5351995-09-30030 September 1995 Monthly Operating Repts for Sept 1995 for Sequoyah Nuclear Plant ML20092G2981995-08-31031 August 1995 Monthly Operating Repts for Aug 1995 for Sequoyah Nuclear Plant 1999-09-30
[Table view] Category:TEXT-SAFETY REPORT
MONTHYEARML20212J6311999-10-0101 October 1999 SER Accepting Request for Relief from ASME Boiler & Pressure Vessel Code,Section Xi,Requirements for Certain Inservice Insp at Plant,Unit 1 ML20217G3721999-09-30030 September 1999 Monthly Operating Repts for Sept 1999 for Sequoyah Nuclear Plant.With ML20212F0831999-09-23023 September 1999 Safety Evaluation Granting Relief from Certain Weld Insp at Sequoyah Nuclear Plant,Units 1 & 2 Pursuant to 10CFR50.55a(a)(3)(ii) for Second 10-year ISI Interval ML20212F4761999-09-23023 September 1999 Safety Evaluation Supporting Amends 246 & 237 to Licenses DPR-77 & DPR-79,respectively ML20212C4761999-08-31031 August 1999 Monthly Operating Repts for Aug 1999 for Sequoyah Nuclear Plant.With ML20210L4361999-08-0202 August 1999 Cycle 9 12-Month SG Insp Rept ML20216E3781999-07-31031 July 1999 Monthly Operating Repts for July 1999 for Sequoyah Nuclear Plant,Units 1 & 2.With ML20210L4451999-07-31031 July 1999 Unit-2 Cycle 10 Voltage-Based Repair Criteria 90-Day Rept ML20210G6631999-07-28028 July 1999 Cycle 9 90-Day ISI Summary Rept ML20196H8621999-06-30030 June 1999 NRC Regulatory Assessment & Oversight Pilot Program, Performance Indicator Data, June 1999 Rept ML20209H3831999-06-30030 June 1999 Monthly Operating Repts for June 1999 for Sequoyah Nuclear Plant.With ML20211F9031999-06-30030 June 1999 Cycle 9 Refueling Outage ML20196J8521999-06-28028 June 1999 Safety Evaluation Authorizing Proposed Alternative to Use Iqis for Radiography Examinations as Provided for in ASME Section III,1992 Edition with 1993 Addenda,Pursuant to 10CFR50.55a(a)(3)(i) ML20195K2951999-05-31031 May 1999 Monthly Operating Repts for May 1999 for Sequoyah Nuclear Plant,Units 1 & 2.With ML20206Q8951999-05-0505 May 1999 Rev 0 to L36 990415 802, COLR for Sequoyah Unit 2 Cycle 10 ML20206R5031999-04-30030 April 1999 Monthly Operating Repts for April 1999 for Sequoyah Units 1 & 2.With ML20205P9811999-03-31031 March 1999 Monthly Operating Repts for Mar 1999 for Sequoyah Nuclear Plant,Units 1 & 2.With ML20204C3111999-02-28028 February 1999 Monthly Operating Repts for Feb 1999 for Sequoyah Nuclear Plant,Units 1 & 2.With ML20205B6631999-02-28028 February 1999 Underground Storage Tank (Ust) Permanent Closure Rept, Sequoyah Nuclear Plant Security Backup DG Ust Sys ML20203H7381999-02-18018 February 1999 Safety Evaluation of Topical Rept BAW-2328, Blended U Lead Test Assembly Design Rept. Rept Acceptable Subj to Listed Conditions ML20211A2021999-01-31031 January 1999 Non-proprietary TR WCAP-15129, Depth-Based SG Tube Repair Criteria for Axial PWSCC Dented TSP Intersections ML20198S7301998-12-31031 December 1998 Cycle 10 Voltage-Based Repair Criteria 90-Day Rept ML20199G3641998-12-31031 December 1998 Monthly Operating Repts for Dec 1998 for Sequoyah Nuclear Plant,Units 1 & 2.With ML20197J5621998-12-0303 December 1998 Unit 1 Cycle 9 90-Day ISI Summary Rept ML20197K1161998-11-30030 November 1998 Monthly Operating Repts for Nov 1998 for Sequoyah Nuclear Plant,Units 1 & 2.With ML20195F8061998-10-31031 October 1998 Monthly Operating Repts for Oct 1998 for Sequoyah Nuclear Plant.With ML20154H6091998-09-30030 September 1998 Monthly Operating Repts for Sept 1998 for Sequoyah Nuclear Plant,Units 1 & 2.With ML20154H6251998-09-17017 September 1998 Rev 0 to Sequoyah Nuclear Plant Unit 1 Cycle 10 Colr ML20153B0881998-08-31031 August 1998 Monthly Operating Repts for Aug 1998 for Sequoyah Nuclear Plant.With ML20239A0631998-08-27027 August 1998 SER Accepting Licensee Response to GL 95-07, Pressure Locking & Thermal Binding of Safety-Related Power-Operated Gate Valves, for Sequoyah Nuclear Plant,Units 1 & 2 ML20236Y2091998-08-0707 August 1998 Safety Evaluation Accepting Relief Requests RP-03,RP-05, RP-07,RV-05 & RV-06 & Denying RV-07 & RV-08 ML20237B5221998-07-31031 July 1998 Monthly Operating Repts for July 1998 for Snp ML20237A4411998-07-31031 July 1998 Blended Uranium Lead Test Assembly Design Rept ML20236P6441998-07-10010 July 1998 LER 98-S01-00:on 980610,failure of Safeguard Sys Occurred for Which Compensatory Measures Were Not Satisfied within Required Time Period.Caused by Inadequate Security Procedure.Licensee Revised Procedure MI-134 ML20236R0051998-06-30030 June 1998 Monthly Operating Repts for June 1998 for Sequoyah Nuclear Plant ML20249A8981998-05-31031 May 1998 Monthly Operating Repts for May 1998 for Sequoyah Nuclear Plant,Units 1 & 2 ML20247L5141998-04-30030 April 1998 Monthly Operating Repts for Apr 1998 for Sequoyah Nuclear Plant ML20217K4471998-04-27027 April 1998 Safety Evaluation Supporting Requests for Relief 1-ISI-2 (Part 1),2-ISI-2 (Part 2),1-ISI-5,2-ISI-5,1-ISI-6,1-ISI-7, 2-ISI-7,ISPT-02,ISPT-04,ISPT-06,ISPT-07,ISPT-8,ISPT-01 & ISPT-05 ML20217E2221998-03-31031 March 1998 Monthly Operating Repts for Mar 1998 for Sequoyah Nuclear Plant ML20248L2611998-02-28028 February 1998 Monthly Operating Repts for Sequoyah Nuclear Plant,Units 1 & 2 ML20199J2571998-01-31031 January 1998 Cycle 9 Voltage-Based Repair Criteria 90-Day Rept ML20202J7911998-01-31031 January 1998 Monthly Operating Repts for Jan 1997 for Sequoyah Nuclear Plant,Units 1 & 2 ML20199J2441998-01-29029 January 1998 Snp Unit 2 Cycle Refueling Outage Oct 1997 ML20199F8531998-01-13013 January 1998 ASME Section XI Inservice Insp Summary Rept for Snp Unit 2 Refueling Outage Cycle 8 ML20199A2931997-12-31031 December 1997 Revised Monthly Operating Rept for Dec 1997 for Sequoyah Nuclear Plant,Units 1 & 2 ML20198M1481997-12-31031 December 1997 Monthly Operating Repts for Dec 1997 for Sequoyah Nuclear Plant,Units 1 & 2 ML20197J1011997-11-30030 November 1997 Monthly Operating Repts for Nov 1997 for Sequoyah Nuclear Plant,Units 1 & 2 ML20199C2951997-11-13013 November 1997 LER 97-S01-00:on 971017,vandalism of Electrical Cables Was Observed.Caused by Vandalism.Repaired Damaged Cables, Interviewed Personnel Having Potential for Being in Area at Time Damage Occurred & Walkdowns ML20199C7201997-10-31031 October 1997 Monthly Operating Repts for Oct 1997 for Sequoyah Nuclear Plant L-97-215, SG Secondary Side Loose Object Safety Evaluation1997-10-23023 October 1997 SG Secondary Side Loose Object Safety Evaluation 1999-09-30
[Table view] |
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A i, nn fenneswe Vaney AWWy Post CH Ce Boa MO k% Da.f y Temeswo 37379 I
December 15, 1994 l U.S. Nuclear Regulatory Commission l ATTN: Document Control Desk l Washington, D.C. 20555 l
Gentlemen:
In the Matter of ) Docket Nos. 50-327 Tennessee Valley Authority ) 50-328 SEQUOYAI! NUCLEAR PLANT (SQN) - NOVEMBER 1994 MONTHLY OPERATING REPORT Enclosed is the November 1994 Monthly Operating Report as required by SQN Technical Specification 6.9.1.10.
If you have any questions concerning this matter, please call J. W. Proffitt at (615) 843-6651.
Sincerely.
0,N.AAdf :
R. II. Shell Manager l SQN Site Licensing l l
l Enclosure I cc: See page 2 l
9412200099 941130 <
PDR ADOCK 05000327 k J R PDR ,
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4
,9 U.S. Nuclear Regulatory Commission Page 2 December 15, 1994 cc (Enclosure): -
l IhPO Records Center Institute of Nuclear Power Operations 700 Galleria Parkway Atlanta, Georgia 30339-5957 Mr. D. E. LaBarge, Project Manager .
U.S. Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike l
Rockvf11e, Maryland 20852-2739 l
Mr. Joseph Santucci, Manager Advanced Reactor Department Electric Power Research Institute 3340 lii11 view Avenue Palo Alto, California 94304 1
l NRC Resident Inspector Sequoyah Nuclear Plant 2600 Igou Ferry Road Soddy-Daisy, Tennessee 37379-3624 --
Regional Administration U.S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323-2711 Regional Administrator U.S. Nuclear Regulatory Commission ,'
Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323-2711 Mr. F. Yost, Director Research Services Utility Data Institute 1200 G Street, NW, Suite 250 Washington, D.C. 20005 ,
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9 TElefESSEE VALIEY AUTHORITY
- f. SEQUOYAH NUCLEAR PLANT 1p h
MONTHLY OPERATING REPORT TO THE NUCLEAR REGULATORY CGMISSION HQYE2Hl53L199_4 .
gi UNIT 1 DOCKET NIMBER 50-327 LICENSE NIMBER DPR-77 UNIT 2 4
DOCKET NIMBER 50-328 LICENSE NIMBER DPR-79 s
p
. OPERATIONAL
SUMMARY
NOVEMBER 1994 illilL1 Unit 1 generated 785,920 megawatthours (MWh) (gross) electrical power during November with a capacity factor of 94.84 percent.
On November 29 at 0713 EST, with Unit 1 operating at approximately 100 percent reactor power, an automatic turbine trip signal was generated from a loss of both 48-volt electrohydraulic control (EHC) power sources, resulting in a reactor trip. The immediate cause of the trip was the loss of both 48-volt direct current EHC power supplies as a result of an electrical spike on the power supply output.
Unit i remained in Mode 3 at the end of November.
UNIT 2 Unit 2 8enerated 293.207 megawatthours (MWh) (gross) electrical power during November wit' a capacity factor of 35.54 percent.
The Unit 2 Cycle 6 refueling outage ended on November 16 at 0209 EST when the generator was synchronized to the grid. On November 18 at 1649 EST, with the unit operating at approximately 30 percent reactor power, a manual power reduction was initiated when a steam leak resulted from a faulty weld on 2-VLV-7-542. This test connection could not be isolated for repair. Reactor power was reduced to 20 percent, and the generator was taken of f-line for the repairs to be performed. Unit 2 was tied on-line on November 19 at 0436 EST, and reactor power increase was initiated. Unit 2 reached 100 percent reactor thermal power on November 25 at 0935 EST and remained at 100 percent power at the end of the month.
.\ . ..*
'L, ,
AVERACE DAILY IBfIT PORR 12 VEL DOCKET NO. 50-327 UNIT No. One DATE: 12-05-94 COMPLETED BY: L_J. Ho11omon TELEPHONE: (615) 843-7528 MONTH: -NOVjtiBER 1994 l AVERAGE DAILY POWER LEVEL AVERAGE DAILY POWER LEVEL M (MWe-Net) L6Y (MWe-Net) 1 1137 17 1133 2 1136 18 1138 3 1134 19 1141 4 1130 20 1142 ,
5 1128 21 1067 6 1134 22 1032 i 7 1133 23 1050 -t 8 1132 24 1061 ,
9 1132 25 1067 10 1132 26 1083 11 1136 27 1081 12 1129 28 1087 13 1138 29 11 14 _
1134 30 -15 15 1136 31 0 16 1134 P
B
.~ .
l AVERACE MILY UNIT FOMB IJNEL DOCKET NO. 50-328 UNIT No. Two DATE: 12-05-94 i
COMPLETED BY: T. J. Hollomon TELEPHONE: (615) 843-7528 j MONTH: _ NOVEMBER 1994 AVERAGE DAILY POWER LEVEL /NERAGE DAILY POWER LEVEL DAY (MWe-Net) DAY . (MWe-Net) 1 -20 17 266 2 -7.1 18 200 3 -25 19 721 4 -21 20 826 5 -28 21 834 6 -21 22 846 ,
7 -22 23 843 8 -23 , 24 872 I 9 -25 25 1086 10 -25 26 1132 11 -21 27 1141 -
1128 12 -27 28 13 -25 29 1117 14 -25 30 1092 15 -23 31 0 16 174 I
r
., _ , _ . . ____m-- . . _ _ , . , . - , _ . - . _ _ _ - _ _ . . _ . - . _ _
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. r OPERATING DATA REPORT DOCKET NO. 50 327 DATE 12/05/94 COMPLETED BY T . J . Hol l omon TELEPHONE (6151 843-7528 r
OPERATING STATUS l Notes l 1 Unit Name: Seauevah Unit One l l
- 2. Reporting Period: November 1994 l 'l
- 3. Licensed Thermal Power (HWt): _3411.0 l l
- 4. Nameplate Rating (Gross MWe): 1220.6 *l l ,
- 5. Design Electrical Rating (Net MWe): 1148.0 l l ,
- 6. Maximum Dependable Capacity (Gross HWe): _1111.0 l l
- 7. Maximum Dependable Capacity (Net HWe): 1111.0 l I
- 8. If Changes Occur in Capacity Ratings (Item Numbers 3 Through 7) Since Last Report, Give Reasons:
- 9. Power Level To Which Restricted, If Any (Net HWe): N/A
- 10. Reasons For Restrictions, If Any: N/A This Month Yr-to-Date Cumulative
- 11. Hours in Reporting Period 720 8.016 117,625 _
- 12. Number of Hours Reactor Was Critical 679.2 5.389.2. 61.418
- 13. Reactor Reserve Shutdown Hours 0 0 0
- 14. Hours Generator On-Line 679.2 5.162.9 59.991.4
- 15. Unit Reserve Shutdown Hours 0 0 0 ;
- 16. Gross Thermal Energy Generated (HWH) 2.268.344.8 16.714.285.8 195.600.039
- 17. Gross Electrical Energy Generated (MWH) 785.920 5.667.980 66.370.534 ..
- 18. Net Electrical Energy Generated (MWH) 755.372 5.445.573 63.609.610
- 19. Unit Service Factor 94.3 64.4 51.0 .
- 20. Unit Availability factor 94.3 64.4 51.0
- 21. Unit Capacity Factor (Using HDC Net) 94.4 61.1_ 48.7
- 22. Unit Capacity factor (Using DER Net) 91.4 59.2. 47.1 l
- 23. Unit Forced Outage Rate 5.7 4.3 . 36.8
- 24. Shutdowns Scheduled Over Next 6 Honths (Type, Date, and Duration of Each):
- 25. If Shut Down At End Of Report Period, Estimated Date of Startup: December 6. 1994 ,
I i
- . : ' ' ; e; p':'-. , t t . 'a . ,,
~
OPERATING DATA REPORT DOCKET NO. 50-328
-DATE 12/05/94 COMPLETED BY T. J. Hollomon '
TELEPHONE f615) 843-7528' i
Qf1 RATING STATUS .l' l Notes l
- 1. Unit Name: _StAugyah Unit Two l l
- 2. Reporting Period: 1 November 1994 l l
- 3. Licensed Thermal Power (MWt): 3411.0 l l
- 4. Nameplate Rating (Gross MWe): 1220.6 l l ,
- 5. Design Electrical Rating (Net MWe): 1148.0 l l
- 6. Maximum Dependable Capacity (Gross MWe): 1146.0 l l r
- 7. Maximum Dependable Capacity (Net MWe): _1106.0 l l
- 8. If Changes Occur in Capacity Ratings (Item Hembers 3 Through 11 Since Last Report, Give Reasons:
- 9. Power Level To Which Restricted, If Any (Net MWe): N/A
- 10. Reasons for Restrictions, If Any: N/A _
i This Month Yr-to-Date Cumulative
- 11. Hours In Reporting Period 720 8.016 109J85 12 Number of Hours Reactor Was Critical 475.8 4.853.5 63.612 :
- 13. Reactor Reserve Shutdown Hours 0 0 0 l
- 14. Hours Generator On-Line 349.7 4.672.2 61.965.7
- 15. Unit Reserve Shutdown Hours 0 0 0
- 16. Gross Thermal Energy Generated (MWH) 944.910.6 15.230.849 9. 194.993.802 -
- 17. Gross Electrical Energy Generated (HWH) 293.207 5.206.233 66.134.177 _ ;
- 18. Het Electrical Energy Generated (MWH) __,_213.187 4.990.520 63.268.806
- 19. Unit Service factor 48.6 58.3 _ _ .
56.5 ,
- 20. Unit Availability factor 48.6 58.3. 56.5 ,
- 21. Unit Capacity Factor (Using MDC Net) 34.3 56.3 52.2 ,
- 22. Unit Capacity Factor (Using DER Net) 33 1 54.2 50.3 ;
, 23. Unit forced Outage Rate 2.3 2.5 35.4 ;
- 24. Shutdowns Sched" led Over Next 6 Months (Type, Date, and Duration of Each):
i l
- 25. If Shut Down At End Of Report Period, Estimated Date of Startup:
I i
i l
1
DOCKET NO: 50-327 '
UNIT SHUTD0kNS AND POWER REDUCTIONS UNIT NAE : One DATE: 12/06/94 REPORT MONTN: November 1994 COMPLETED BY:T. J. Hollomon **
TELEPHONE:I615) 843-7523 Method of Licensee Cause and Corrective Duration Shatting Down Event Systga Compgnent Action to '
ko. Date Type (Hours) Reason Reactor Report No. Code Code Prevent Recurrence 5 941129 F 40.8 A 3 327/94014 JJ RJX On November 29 at 0713 EST, with Unit 1 operating at 100 percent reactor power, an automatic turbine trip / reactor trip signal was generated from a loss of both 48-volt electrohydraulic control (EHC) power sources. The cause of the event was inadequate technical review in the changing of the EHC overvoltage trip point. A contri-buting factor was an increase in radio frequency interference, resulting in the overvoltage trip point being exceeded, causing the loss of OHC power supply. Actions are being developed to ensure that vendor information is properly evaluated before being utilized.
2 3 #
I:F Forced Reason: Method: Exhibit G-Instructions S: Scheduled A-Equipment Failure (Explain) 1-Manual for Preparation of Data B-Maintenance or Test 2-Manual Scram Entry sheets for Licensee C-Refueling 3-Automatic Scram Event Report (LER) File D-Regulatory Restruction 4-Continuation of Existing Outage (NUREG-1022)
E-Operator Training and License Examir:ation 5-Roduction F-Administrative 9-Other S
G-Operational Error (Explain) Exhibit I-Sase Source H-Other (Explain)
DOCKET NO: 50-328 ~ *
- UNIT SHUTD0bMS AND POWER REDUCTIONS UNIT NAME: Two DATE: 12/06/94 REPORT MONTH: November 1994 COMPLETED BY:T. J. Hollomon
- TELEPHONE: f 6151 84'3-7528 l Method of Licensee Cause and Corrective l Duration Shutting Down Event System Component Action to
- I Reason 2 Reactor3 Report No. 4 5 No. Date Type (Hours) Code Code Prevent Recurrence 3 941101 S 362.1 C 4 N/A N/A N/A The Unit 2 Cycle 6 refueling outage ended on November 16 at 0209 EST when the generator was synchronized to the grid.
4 941118 F 8.2 B 1 N/A SD PSF On November 18 at 1431 EST, a steam leak was discovered at Test Connection 2-VLV-7-542. The leak could not be isolated for repairs.
At 1649 EST, power reduction was initiated, and the Unit 2 generator was removed from the grid. The cause of the leak was a failed weld. The weld was repaired, and the equipment was returned to service. ,,
2 3 #
I:F Forced Reason: Method: Exhibit G-Instructions S: Scheduled A-Equipment Failure (Explain) 1-Manual for Preparation of Data B-Maintenance or Test 2-Manual Scram Entry sheets for Licensee C-Refueling 3-Automatic Scram Event Report (LER) File D-Regulatory Restruction 4-Continuation of Existing Outage (NUREG-1022)
F-Operator Training and License Examination 5-Reduction F-Administrative 9-Other G-Operational Error (Explain) 5Exhibit I-Same Source H-Other (Explain)
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