ML20066D354

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Monthly Operating Repts for Sept 1982
ML20066D354
Person / Time
Site: Sequoyah  Tennessee Valley Authority icon.png
Issue date: 10/05/1982
From: Mason C
TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML20066D343 List:
References
NUDOCS 8211110296
Download: ML20066D354 (13)
v • d • e


Text

TENNESSEE VALLEY AUTHORITY DIVISION OF NUCLEAR POWER SEQUOYAH NUCLEAR PLANT i

MONTHLY OPERATING REPORT SEPTEMBER 1, 1982 - SEPTEMBER 30, 1982 UNIT 1 DOCKET NUMBER 50-327 LICENSE NUMBER DPR-77 UNIT 2 DOCKET NUMBER 50-328 LICENSE NUMBER DPR-79 Submitted By:

Power Plant Faperintendent l

8211110296 821008 PDR ADOCK 05000327 R PDR

. TABLE OF CONTENTS t

Operations Summary . . .. ... . . . . . . . . . . . . . . . . . . . . . 1 Significant Operational Events . . . . . . . . . . . . . . . . . . . . . . 1-2 PORV's and Safety Valves Summary . . . . . . . . . . . . . . . . . . . . . 2 Licensee Events and Special Reports . . . . . . . . . . . . . . . . . . . 3-4 Offsite Dose Calculation Manual Changes . . . . . . . . . . . . . . . . . 5 Operating Data Unit 1 . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . 6-8 Unit 2 . . . . .. . ... . . . . . . . . . . . . . . . . . . . . . 9-11 Plant Maintenance Summary . . . . . . . . . . . . . . . . . . . . .. . . 12

Oparetiens Summary September 1982 The following summary describes the significant operational activities for the month of September. In support of this summary, a chronological log of significant events is included in this report.

Unit 1 Unit I was critical for 244.7 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br />, produced 273,586 MWH (gross) with 4.10 percent station service use resulting in an average hourly gross load of 1,122,174 KW during the month. The net heat rate for the month was 10,700 BTU /KWH. The capacity factor for the month was 32.7 percent. The first refueling / modification outage started on September 10.

There were no reactor scrams, one manual shutdown, and no power re-ductions during September.

Unit 2 Unit 2 was critical for 657.3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br />, produced 688,770 MWH (gross) with 4.0 percent station service use, resulting in an average hourly gross load of 1,052,119 kW during the month. The net heat rate for the month was 10,770 BTU /KWH. There are 221.88 full power days estimated remaining until the end of cycle 1 fuel. With a capacity factor of 85 percent the target EOC exposure would be reached June 18, 1983. The capacity factor for the month was 82.3 percent.

There were no reactor scrams, one manual shutdown, and three power reductions during September.

Significant Operational Events Unit 1 Date Time Event 09/01/82 0001 Reactor in mode I at 100% power pro-ducing 1145 MWe.

09/08/82 1825 To control axial power oscillation, the operator diluted the RCS with 23,000 gallons of water to move the rods in five steps. Reactor power was 96%.

09/10/82 2230 Reactor at 98% power. Began manual reactor shutdown for the first refueling / modification outage.

- A 4 Significtnt Operatienni Evrnta (Continued)

Unit 1 Date Time Event 09/11/82 0349 Turbine off-line.

~

09/11/82 0450 Reactor entered mode 3.

09/12/82 1026 Reactor entered mode 5.

09/30/82 2359 Refueling / modification outage continues.

Unit 2 09/01/82 0001 Reactor in mode 1 at 100% power producing 1150 MWe.

09/04/82 2200 Reactor at 85% power producing 999 MWe.

3B heater drain tank pump casing drain line repairs in progress.

09/06/82 2338 Began power ascension.

09/07/82 0500 Reactor at 100% power producing 1140 MWe.

1353 Reactor at 75% power producing 820 MWe. SSPS "B" train failed SI-90.82 due to problems with the logic board.

1535 Began power ascension.

09/09/82 0100 Reactor at 65% power producing 740 MWe.

Leak repairs on both main feedwater pump in progress.

09/10/82 2128 Reactor was reduced to 37% power producing 385 MWe. UHI N concentration out of specification. 2 2136 Began power ascension.

I 2359 Reactor at 51% power, producing 560 MWe and holding while maintenance is being performed on MFPT 2B governor valve.

09/11/82 0315 Began power ascension.

1108 Reactor at 100% power producing 1146 MWe.

09/12/82 0733 Reactor at 82% power producing 989 MWe.

UHI N e neentration out of specification.

2 i

Significent Optrntienal Ev:nta (Continued)

Unit 2 Date Time Event 09/12/82 0910 Began power ascension.

1224 Reactor at 100% power producing 1145 MWe.

09/14/82 2230 Began manual reactor shutdown to replace the UNI rupture diaphram.

09/15/82 0409 Turbine off-line.

0450 Reactor entered mode 3.

09/17/82 1930 Reactor taken critical.

2016 Reactor entered mode 1.

2130 Turbine tied on-line.

09/18/82 0215 Reactor at 29% power producing 280 MWe and holding for secondary chemistry to come into specifications.

0958 Began power ascension.

1210 Reactor at 42% Power, producing 430 MWe and holding due to an alarm concerning the ice condenser doors.

1346 Began power reduction to visually inspect the ice condenser d'oors.

1511 Reactor at 32% power producing 312 MWe. Ice i condenser door inspection in progress.

(

1636 Jarred ice condenser door fixed, began power ascension.

09/19/82 0750 Reactor at 100% power, producirg 1145 MWe.

09/29/82 1420 Reactor at 100% producing 1158 MWe and losing vacuum - began power reduction.

1717 MSR A-1 start-up vent line found broken at the condenser. The line was~ plugged.

1758 Began power ascension.

i 09/30/82 2359 Reactor in mode 1 at 100% power, producing 1155 MWe.

l l

i

l PORV's rnd Safety Vnivas Summary No PORV's or safety valves were challenged during the month.

Licensee Events and Special Reports The following Licensee Event Reports (LER's) were sent during September 1982, to the Assistant Director of Nuclear Power (Operations) for reporting to the Nuclear Regulatory Commission.

Unit 1 LER SUBJECT SQRO-50-327/82106 Forty-five penalty minutes were accumulated when the axial flux difference was discovered outside the target band due to various pcwer reductions.

SQRO-50-327/82107 Annulus door A65 and access door A65 opened at the same time due to interlock failure rendering both trains of EGTS inoperable.

SQRO-50-327/82108 RWST level channel LT-63-50 found out-of-tolerance during the performance of SI-70. Instrument drift was declared as the cause.

t SQRO-50-327/82111 One containment pressure channel for remote shutdown monitoring was declared inoperable due to a closed isolation valve on the sensing line.

SQRO-50-328/82109 Hot leg sample valve 2-FCV-43-22 would not open because the open limit switch was out of adjustment.

SQRO-50-328/82110 One train of the automatic trip logic (SSPS) was declared inoperable because the testing time exceeded one hour due to problems clearing the first out annunciators.

Special Reports There were no special reports sent during the month of September.

Offsite Dose Calculation Manual Changes There were no changes to the Sequoyah Nuclear Plant ODCM during September.

OPERATING DATA REPORT DOCKET NO. 50-327 -

DATE October 5. 1982 COMPLETED BY M. Eddings-TELEPHONE (615) 751-0343 OPERATING STATUS

1. Unit Name: Sequoyah one Notes
2. Reporting Period: September 1982
3. Licensed Thermal Power (MWt): 3411
4. Nameplate Rating (Gross MWe): 1220.58
5. Design Electrical Rating (Net MWe): 1148
6. Maximum Dependable capacity (Gross MWe): 1163
7. Maximum Dependable Capacity (Net MWe): 1128
8. If Changes Occur in Capacity Ratings (Items Number 3 Through 7) Since Last Report, Give Reasons:
9. Power Level To Which Restricted, If Any (Net MWe):
10. Reasons For Restrictions, If Any:

This Month Yr-to-Date Cumulative

11. Hours in Reporting Period 720 6551 10968
12. Number of Hours Reactor Was Critical 244.7 4734.4 7535.7
13. Reactor Reserve Shutdown Hours 0 0 0
14. Hours Generator On-Line 243.8 4629.1 7319.4
15. Unit Reserve Shutdown Hours 0 0 0
16. Gross Thermal Energy Generated (MWH) 820,056 15,217,828 23,282,782
17. Gross Electrical Energy Generated (dWH) 273,586 5,111,586 7,757,536
18. Net Electrical Energy Generated (MWH) 262,493 4,908,979 7,436,003
19. Unit Service Factor 33.9 70.7 66.7
20. Unit Availability Factor 33.9 70.7 66.7
21. . Unit Capacity Factor (Using MDC Net) 32.3 66.4 60.1
22. Unit Capacity Factor (Using DER Net) 31.8 65.3 59.1
23. Unit Forced Cutage Rate 17.1 17.8
24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):
25. If Shut Down At End Of Report Period, Estimated Date of Startup: 12-25-82
26. Units In Test Status (Prior to Commercial Operation):

Forecast Achieved INITIAL CRITICALITY 7-4-80 7-5-80 INITIAL ELECTRICITY 8-21-80 7-22-80 COMMERCIAL OPERATION 7-1-81 _ 7-1-81 (9/77)

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UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50-327 UNIT NAME Sequoyah One DATE October 3. 1982 COMPLETED BY M. Eddings

, REPORT MONTH September TELEPHONE (615) 751-0343

% u em u y ,3 Licensee g g, Cause & Corrective No. Late ~

e S$ @ y y Event 3.g g.g Action to 2

R y8 g ,8 u y Report # gg gg Prevent Recurrence

$5 a

$ $5

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3 82/09/11 S 476.2 C 1 Refueling Outage

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, 1 2 3 4 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 (NUREG-D-Regulatory Restriction 4-Cont. of Existing 0161)

E-Operator Training & License Examination Outage F-Administrative 5-Reduction G-Operational Error (Explain) 9-Other 5 (9/77) H-Other (Explain) Exhibit I-Same Source

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AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-327 UNIT one DATE October 5, 1982 COMPLETED BY M. Jordan TELEPHONE (615) 751-0343 MONTH September DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1 1099 0 17 2 1099 18 0 3 1099 19 0 4 1105 20 0 5 1099 21 0 6 1078 22 0 7 1070 23 0 8 1057 24 0 9 1099 25 0 10 1099 26 0 11 80 27 0 12 0 28 0 13 0 29 0 14 0 30 0 15 0 31 ---

16 0 INSTRUCTIONS On this format, list the average daily unit power level in MWe-Net for each day in the reporting month. Compute to the nearest whole megawatt.

(9/77) e

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OPERATING DATA REPORT DOCKET NO. 50-328 DATE October 4, 1982 COMPLETED BY David Dupree TELEPIIONE (615) 751-0343 I

OPERATING STATUS

1. Unit Name: Sequoyah Two Notes
2. Reporting Period: September, 1982
3. Licensed Thermal Power (MWt): 3411
4. Nameplate Rating (Gross MWe): 1220.58
5. Design Electrical Rating (Net MWe): 1148
6. Maximum Dependable Capacity (Gross MWe): 1163
7. Maximum Dependable Capacity (Net MWe): 1128
8. If Changes Occur in Capacity Ratings (Items Number 3 Through 7) Since Last Report, Give Reasons:
9. Power Level To Which Restricted, If Any (Net MWe):
10. Reasons For Restrictions, If Any:

This Month Yr-to-Date Cumulative

11. Hours in Reporting Period 720 2928 2928
12. Number of Hours Reactor Was Critical 657.3 2834.9 2834.9
13. Reactor Reserve Shutdown flours o o o
14. Hours Generator On-Line .

6s4.6 2R12_? ?n17 ?

15. Unit Reserve Shutdown liours o o o
16. Gross Thermal Energy Generated (MWH) 2.079.585 8.882.155.4 8.882.155.4
17. Gross Electrical Energy Generated (MWII) 688.770 2.983.540 2.983.540
18. Net Electrical Energy Generated (MWil) 661.270 2.872.529.6 2.872.529.6
19. Unit Service Factor 90.9 96.7 96.7
20. Unit Availability Factor 90.9 96.7 96.7
21. Unit Capacity Factor (Using MDC Net) 81.4 87.0 87.0
22. Unit Capacity Factor (Using DER Net)- 80.0 85.5 85.5
23. Unit Forced Outage Rate 0 1.6 1.6
24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):

Ice weighing, 11-4-82, per Technical Specifications. Duration - three weeks.

25. If Shut Down At End Of Report Period, Estimated Date of Startup: NA
26. Units In Test Status (Prior to Commercial Operation):

Forecast Achieved INITIAL CRITICALITY 11-5-81 11-5-81 INITIAL ELECTRICITY 12-31-81 12-31-81 COMMERCIAL OPERATION 6-1-82 6-1-82

, (9/77)

L.

UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50-328 UNIT NAME seanovnh Two

  • DATE October 4 1982 COMPLETED BY David Dupree REPORT MONTH September TELEPHONE (615) 751-0343

% u

p. em m T en 3 Licensee g g, Cause & Corrective Date e., S g y y Event 3.g g.g Action to R %g g j"y Report # g3 g.g Prevent Recurrence

$6 o

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5 82/09/07 F 0 B 5 Logic board failure on SSPS while performing channel calibratians, SI-90.82. (Hi-Hi containment pressure channel).

i 6 82/09/08 F 0 B 5 Maintenance on "A" and "B" main feed pumps

'f -

(repair leaks).

7 82/09/10 F 0 D 5 N2 c ncentration on UHI out of specifications ,

reduce log to 37%.

7 82/09/14 y 65.35 B 1 Manual shutdown, repair diaphram on UHI.

I 2 3 4 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 (NUREG-D-Regulatory Restriction 4-Cont. of Existing 0161)

E-Operator Training & License Examination Outage F-Administrative 5-Reduction G-Operational Error (Explain) 9-Other 5 (9/77) H-Other (Explain) Exhibit I-Same Source

e.

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-328 UNIT Two DATE scorgmher. 1982 COMPLETED BY David Dupree TELEPHONE (615) 751-0343 MONTH September DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) -

1 1088 17 8 2 1086 18 413 3 1085 19 1094 3 4 1075 20 1097 5 945 21 1010 6 944 22 1098 7 1021 23 1072 8 1087 24 1103 9 694 25 1101 10 657 26 1106 11 971 27 1107 12 1076 28 1106 13 1098 29 1081 14 1099 30 1106 15 85 31 ---

16 0 INSTRUCTIONS On this format, list the average daily unit power level in MWe-Net for each day in the reporting month. Compute to the nearest whole megawatt.

(9/77)

Picat Maintcn nca Summary The following significant maintenance items were completed during the month of September 1982:

Mechanical Maintenance

1. Inspected reactor coolant pump #1 seals and replaced seal runners #2 and
  1. 3 and replaced #3 seal (Unit 1).
2. Replaced #2 and #3 seals on reactor coolant pump 3 (Unit 1).
3. Weighed and added ice to the top of the ice baskets.

Electrical Maintenance

1. Completed repairs ca the spare reactor coolant pump motor.
2. Began repairs and modifications to Unit I reactor coolant pump motors
  1. 2 and #3.

Instrument Maintenance Instrumentation work was started du' ng the Unit I refueling outage on modifying the Foxboro I/I modules which is now approximately 35% complete.

New steam flow transmitters were received, calibrated, and installed. Refuel cycle instrument surveillance test and calibrations are proceeding.

i

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