ML20071P958

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Monthly Operating Repts for Oct 1982
ML20071P958
Person / Time
Site: Sequoyah  Tennessee Valley Authority icon.png
Issue date: 11/07/1982
From: Eddings M, Jordan M, Mason C
TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML20071P948 List:
References
NUDOCS 8212290164
Download: ML20071P958 (15)
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Text

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TENNESSEE. VALLEY AUTHORITY DIVISION OF NUCLEAR POWER SEQUOYAH NUCLEAR PLANT MONTHLY OPERATING REPORT l OCTOBER 1, 1982 - OCTOBER 31, 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 Superintendent

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8212290164 821112 DRADOCKOSOOOg2

TABLE OF CONTENTS Operations Summary . . . . . . . . . . . ... .... . . . .. . . ... 1 Significant Operational Events . . . . . . . . . . . . . . . . . ... . . 1-5 PORV's and Safety Valves Summary . . . . . . . . . . .. . .. . ... . . 5 Licensee Events and Special Reports . . .. . . . . . . . ... . . . . . 5-6 Offsite Dose Calculation Manual Changes . . . . . ... . . . . . . . . . 6 Operating Data Unit 1 ......... . . . . . .. . . . . .. . . . . . .. . . 7-9 Unit 2 ............ . . .. . . . . . . . ... . . . . . 10-12 i

Plant Maintenance Summary .... . . . . . . . . . . . . .. . . . . . 13 1

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

Unit 1 The refueling / modification outage continued during the month.

Unit 2 Unit 2 was critical for 731.98 hours0.00113 days <br />0.0272 hours <br />1.62037e-4 weeks <br />3.7289e-5 months <br />, produced 771,050 MWH (gross) with 3.74 percent station service use, resulting in an average hourly gross load of 1,069,922 kW during the month. The net heat rate for the month was 10,540 BTU /KWH. There are 193.98 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 16, 1983. The capacity factor for the month was 89.0 percent.

There was one reactor scram, no manual shutdowns, and three power reductions during October.

Significant Operational Events Unit 1 Date Time Event 10/01/82 0001 Refueling modification outage continues.

10/02/82 0400 Reactor entered mode 6.

10/18/82 0530 The reactor head assembly removed.

10/23/82 2230 First fuel assembly removed from the core.

10/27/82 0608 The last fuel assembly removed from the core - no fuel in the core.

10/31/82 2959 Reactor in mode 6, no fuel in the core. The refueling / modification outage continues.

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Signific:nt Oper:tienal Ev:nto (Continued)

Unit 2 Date Time Event 10/01/82 0001 Reactor in mode 1 at 100% power producing 1155 MWe.

10/03/82 0230 Began load reduction to repair a cracked I pump casing drain line on main feedwater pump turbine 2B. ,

l 0600 Reactor at 58% power producing 710 MWe.

1330 MFPT 2B repairs completed, began power ascension.

1630 Reactor at 100% power producing 1155 MWe.

2200 2A-1 high pressure heater removed from service to work on a valve operator. Reactor at 100% power producing 1144 MWe, l 10/04/82 1235 2A-1 heater back in service, load increased to 1150 MWe.

10/07/82 2339 The reactor tripped when the generator tripped due to a voltage regulator problem in the generator.

10/08/82 1240 Reactor taken critical.

1455 Reactor in mode 1 at 5% power.

1643 No. 3 governor valve stuck closed.

2359 Unit tied on line.

10/09/82 0200 Reactor at 30% power, producing 275 MWe and holding waiting for the secondary vster chemistry to come into specification.

2000 Unit released to go to 100% power.

10/10/82 1200 Reactor at 97% power producing 1120 MWe, maximum power and load with #3 governor valve closed.

10/12/82 0911 2B-2 condenser water box taken out of service for tube leak testing. Unit load 1115 MWe.

Signifiernt Oparctien91 Ev;nts (Continued)

Unit 2 Date Time Event 10/12/82 1917 2B-2 water box back in service, unit load 1140 MWe.

10/13/82 0530 2B-1 water box taken out of service for tube leak testing, unit load 1115 MWe.

0950 2B-1 water box back in service, unit load 1140 MWe.

1045 2A-2 water box taken out of service for tubing leak testing, unit load 1115 MWe.

10/15/82 0045 2A-2 water box 'back in service after leaking tubes were repaired. Unit load 1135 MWe.

0550 2A-1 water box taken out of service for tube leak testing, unit load 1120 MWe.

1314 2A-1 water box back in service, unit load 1135 MWe.

10/16/82 0740 Began power reduction to perform SI-90.102.

f 0800 Reactor at 92% power producing 1110 MWe.

1130 Began power ascension.

1300 Reactor at 97% power producing 1138 MWe.

10/18/82 0546 2C-2 water box taken out of service for tube leak testing, unit load 1123 MWe.

0915 2C-2 water box back in service, unit load 1135 MWe.

1010 2C-1 water removed from service for tube leak testing, unit load 1120 MWe.

1523 2C-1 water box back in service, unit load 1140 MWe.

10/21/82 0212 Began power reduction to repair an oil leak on the condensate booster pump.

0335 Reactor at 80% power producing 950 MWe.

Signific:nt Op:rsticnal EvInts (Continued)

-Unit 2 4

Date Time Event 10/21/82 0700 Began power ascension.

1006 Reactor at 97% power producing 1150 MWe, #3 governor valve closed.

10/23/82 0030 Began power reduction to repair leaks on the drain line on 2B MFPT.

0320 Reactor at 60% power, producing 720 MWe.

2304 Began power ascension.

10/24/82 0235 Reactor at 97% power, producing 1140 MWe.

10/27/82 1030 1030 water box removed from service for tube leak testing, unit load 1131 MWe, 1227 Began load reduction due to sodium concentra-tion out of specification.

1558 Reactor at 40% power producing 465 MWe.

1735 2A-2 water box returned to service unit load 484 MWe.

1945 Began power ascension.

10/28/82 0030 Reactor at 97% power producing 1145 MWe, #3 governor valve closed.

0410 2A-1 water box removed from service for tube leak testing, unit load 1136 MWe.

1200 2A-1 water box back in service, unit load 1143 MWe.

1250 2B-1 water box removed from service for tube leak testing, unit load 1140 MWe.

1900 2B-1 water box returned to service, unit load 1145 MWe.

10/29/82 0440 2C-2 water box removed from service for tube leak testing, unit load 1130 MWe.

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Sianificent Operatien,1 Ev:nto (Continued)

Unit 2 Date Time Event 10/29/82 1115 2C-2 water returned to service, unit load 1133 MWe.

1115 2C-1 water removed from service for tube leak testing, unit load 1133 MWe.

1650 2C-1 water box returned to service, unit load 1141 MWe.

10/31/82 2359 Reactor in mode 1 at 97% power producing 1140 MWe, #3 governor valve closed.

PORV's and Safety Valves 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 Octobe- 1982, to the Assistant Director of Nuclear Power (Operations) for reporting to the Nuclear Regulatory Commission.

Unit 1 LER SUBJECT SQR0-50-327/82112 The dissolved air and nitrogen concentrations in the upper head injection accumulator exceeded the technical specification limits due to the rupture diaphragm being ruptured.

SQRO-50-327/82115 Auxiliary building ventilation radiation monitor RE-90-101 was inoperable due to loss of sample flow caused by the failure of the sample flow vacuum pump drive belt.

SQRO-50-327/82116 Both trains of RHR was inoperable due to the inadvertant closing of the RHR suction valve 1-FCV-74-2 when a fuse was removed during modification work.

SQR0-50-327/82117 The time delay setpoint on fire pump 1B-B start circuit was found out of tolerance.

l SQRO-50-327/82121 Auxiliary feedwater automatic valve 1-LCV-3-175 would not fully stroke during testing.

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Lic:ntre Ev:;nts rnd sp: ciel Riptrts (Continued)

Unit 2 LER SUBJECT SQRO-50-328/82113 The dissolved air and nitrogen concentration in the upper head injection accumulators exceeded the technical specification limits due to the rupture diaphragm being ruptured.

SQRO-50-328/82115 Both upper containment personnel airlock doors were opened at the same time because the door swing operating chain was out of adjustment.

SQRO-50-328/82118 ERCW valves 1-FCV-67-66 and -68 would not open on diesel generator 1A-A start signal because of an open circuit.

SQRO-50-328/82119 Unit 2 containment isolation valve 1-FCV-30-17 would not open during performa:.ce of SI-166.1.

SQRO-50-328/82120 The lower containment personnel airlock was inoperable due to a broken cam-roller in the gear box.

Special Reports There were three special reports sent during the month of October.

82-03 Fire detector 74F was inoperable for a period in excess of 14 days.

82-04 The biological shield blocks have been removed from the Unit i 1 reactor building equipment hatch which is a breach of a fire barrier penetration and will remain non-functional for the duration of the refueling outage.

82-05 Door A-64 to the Unit 1 Inger containment personnel airlock has been opened and will remain open during the refueling outage.

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

(7 OPERATING DATA REPORT l'

DOCKET NO. 50-327 DATE Noveraber 4,1982 l-COMPLETED BY M. Eddings l

I TELEPHONE (615) 751-0343

, OPERATING STATUS

1. Unit Name: Sequoyah One Notes
2. Reporting Period: October 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. Maximus 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:

I This Month Yr-to-Date Cumulative

11. Hours in Reporting Period 745 7,296 11,713
12. Number of Hours Reactor Was Critical u 4,/34.4 /,aJ)./
13. Reactor Reserve Shutdown Hours 0 0 0
14. Hours Generator On-Line 0 4,629.1 7,319.4
15. Unit Reserve Shutdown Ifours 0 0 0
16. Gross Thermal Energy Generated (MWH) 0 15,217,828 23,282,782
17. Gross Electrical Energy Generated (MWH) 0 5,111,586 7,757,536
18. Net Electrical Energy Generated (MWH) 0 4,908,979 7,436,003
19. Unit Service Factor 0 63.4 62.5
20. Unit Availability Factor 0 63.4 62.5
21. Unit Capacity Factor (Using MDC Net) 0 59.6 56.3
22. Unit Capacity Factor (Using DER Net) 0 58.6 55.3
23. Unit Forced Outage Rate 0 17.1 17.8
24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):

Refuelinn Modification Outage (September 11) (Scheduled)

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) 1 2

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UNIT SHITTDOWNS AND POWER REDUCTIONS DOCKET NO. sn_t?7-UNIT NAME Sequoyah One DATE November /,.1982 COMPLETED BY M. Eddings REPORT MONTH October TELEPHONE (615) 751-0343 "u u C^ N oM E4 he ause & h ec h No* Dat* ~

a S$ g yj @ Event c.g g .g Action to R yg g j"y Report # g3 g.g Prevent Recurrence Y5 c

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3 82/09/11 S 745 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, 1982 COMPLETED BY Marlene Jordan TELEPHONE _ (615) 751-0421/345 MONTH October DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) -

1 Unit Down 17 Unit Down 2 18 3 19 4 20 .

5 21 6 22 7 23 8 24 9 25 10 26 n n n n 33 g 12 28 13 29 14 30 15 31 16 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.

Refueling modification outage continues. (9/77) 4 NN

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r OPERATING DATA REPORT DOCKET NO. 50-328 DATE November 3, 1982 COMPLETED BY David Dupree TELEPHONE (615) 751-0343 OPERATING STATUS

1. Unit Name: Sequoyah Two Notes
2. Reporting Period: October 1982
3. Licensed Thermal Power (MWt): 3411 Item 14 corrected from
4. Nameplate Rating (Gross MWe): 1220.58 last month's report. +
5. Design Electrical Rating (Net NWe): 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 745 3,673 3,673
12. Number of Hours Reactor Was Critical 732 3,566.9 3,566.9
13. Reactor Reserve Shutdown Hours 0.0 0.0 0.0
14. Hours Generator On-Line 720.7 3,512.9 3,512.9 .
15. Unit Reserve Shutdown Hours 0.0 0.0 0.0 .
16. Gross Thermal Energy Generated (MWH) 2,282,698 11,164,853.4 11,164,853.4
17. Gross Electrical Energy Generated (MWH) 771,050 3,754,590 3,754,590
18. Net Electrical Energy Generated (MWH) 742,187 3,614,716.6 3,614,716.6
19. Unit Service Factor 96.7 95.6 95.6
20. Unit Availability Factor 96.7 95.6 95.6
21. Unit Capacity Factor (Using MDC Net) 88.3 87.2 87.2
22. Unit Capacity Factor (Using DER Net)- 86.8 85.7 85.7
23. Unit Forced Outage Rate 3.3 2.2 2.2
24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):

Ice weighing, 11/13/82, per Technical Specifications.

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 12/23/81 12/23/81 )

COMMERCIAL OPERATION 6/1/82 6/1/82 (9/77) gw. .- ..

1 UNIT SHUTDOWNS AND POWER REDUCTIONS DOCRET NO. 50-328 UNIT NAME seanovah Two

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DATE November 4, 1982

- David Dupree COMPLETED BY -~

REPORT MONTH October TELEPHONE (615) 751-0343

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" " C 'U 3 Li' "8 Ec he Cause & Corrective N* # ~

o 53 '$' 5 m j5 g Event o jj g jj Action to

$ $E E S"S Report # ge g3 Prevent Recurrence Y5 S $5c $

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15 82/10/03 F 0 A 5 Reduced load to repair a cracked line on "B" main feed pump turbine.

, 16 82/10/07 F 24.3 A 3 Unit tripped due to a voltage regulator.

- problem on the generator.

I 17 82/10/23 F 0 A 5 011 leak on the "2B" main feed pump turbine drain pipe.

18 82/10/27 F 0 A 5 Chemistry cut of specifications, high sodium content caused by putting a faulty polisher in service.

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

-[.,.

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-328 UNIT Two DATE October, 1982 COMPLETED BY M. Jordan TELEPHONE (615) 751-0343 MONTH October DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL ,

(MWe-Net) (MWe-Net) 1 1106 17 1086 2 1103 18 1081 3 920 19 1092 4 1072 20 1092 5 1104 21 1056 6 1106 22 1096 7 1090 23 742 8 0 24 1080 9 227 25 1091 10 946 26 1095 11 1106 27 906 12 946 28 1091 13 1071 29 1087 14 1072 30 1096 15 1082 31 1088 16 1071 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)

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Pirnt Maintenanca Summary The following significant maintenance items were corpleted during_th'e month of October 1982:

Mechanical Maintenance

1. Replaced the UHI rupture disk in the Unit 2 UHI system.
2. Replaced the shafts in centrifugal charging pumps IA-A and IB-B.
3. Inspected the pump seals on Unit I reactor coolant pumps #2 and #4.
4. Weighed ice baskets and added ice as requitec in the Unit 1 ice condenser.
5. Centrifugal charging pump 1B-B casing was changed out.
6. Grinded out a rack in the casing of 1A-A centrifugal charging pump.
7. Installed a pump in the boric acid evaporator package A.

Electrical Maintenance

1. Electrical modifications continues on Unit I reactor coolant pump motors #2 and #4.
2. Began godifications and additions to the technical support center.
3. Repaired the Unit 2 generator after the unit tripped due to generator voltage regulator problems.

Instrument Maintenance None reportable.

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