ML19351E239
| ML19351E239 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe |
| Issue date: | 01/20/1972 |
| From: | YANKEE ATOMIC ELECTRIC CO. |
| To: | |
| References | |
| NUDOCS 8011260327 | |
| Download: ML19351E239 (7) | |
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I YANKEE NUCLEAR POWER STATION OPERATION REPORT NO. 132 I'
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For the Month of 1
1 December 1971 i
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January 20, 1972
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This report covers the operation of the Yankee Atomic Electric Company at Rowe, Massachusetts, for the month of December,1971.
During the period plant load varied between 156.1 MWe and 170 5 6
0 MWe as the circulating water temperature fluctuated between 42 F and 36 F.
The eighth, Core IX vapor container air leakage surveillance period continued through the report period with normal leakage noted.
Plant Abnormal Occurrences There were no plant abnormal occurrences during the report period.
Plant Load Reductions, December 1 (1150-1316):
Plant load reduction to 132 MWe for turbine throttle valve exercising.
Plant Shutdowns There were no plant shutdowns during the report period.
Plant Maintenance The following is a list of pertinent maintenance items performed V
by the plant staff during the month of December,1971:
1.
Three storage rack positions were removed from the new fuel vault to facilitate ease of future fuel handling.
2.
The No. 3 boiler feed pump was repacked and the motor oil seals were replaced.
Instrumentation and Control The following is a list of pertinent instrumentation and control maintenance p.
' armed by the plant staff during the month of December,1971.
1.
The narrow range temperature channels we n recalibrated to a lower range due to plant coastdown.
Reactor Plant Performance-The following parameters were determined by means of incore ins trumentation:
513.0 MWt; 504.8 F Tave; Control Rod Group A, B, C, D 0 90*";
5.8 ppm boron l (]
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Maximum outlet temperature = 570.0 F Secondary Plant Performance Feedwater heater teminal differences were as follows:
No. l=4.5 F No. 2 = 7.1 F No. 3 = 6.8 F The condenser performance was as follows:
155.5 MWe; 1.18" Hg B.P.; 513.0 MWt; 37.0 F C.W. in; TTD = 27.9 F; cleanliness factor = 76.9%.
Chemis try The main coolant ammonia and boron concentrations averaged 13.3 ppm and 2.6 ppm, respectively.
The main coolant pH averaged 9.62 during the period.
The main coolant beta-gamma specific activity and crud level averaged 8.19 x 10-2 uc/ml and 0.05 ppm, respectively.
[N The main coolant tritium concentration averaged 1.15 uc/ml during
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the report period.
I The iodine-131 specific activity averaged 8.14 x 10-5 uc/cc and the iodine 131/133 atomic ratio averaged 1.15.
A crud sample for the month collected on December 15, had the following radiochemical analyses: dpm/mg crud Cr-51 Mn-54 Fe-59 7
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3.38 x 10 1.59 x 10 1.51 x 10 Co-58 Co-60 Ag-110M 7
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1.65 x 10 3.43 x 10 9.56 x 10 The main coolant gas sample, collected on December 29, had the following radiochemical analyses: uc/cc gas Xe-133 Xe-135 Ar-41 7.19 x 10-2 2.66 x 10 3.20 x 10-2
-2 Health and Safety Waste disposal liquid releases totalled 25,969 gallons containing 0.010 mc of gross beta-gama activity and 18.880 curies of tritium. Gaseous
's releases during the period totalled 0.081 curies of gross beta-gama activity.
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Secondary plant water discharged totalled 346,778 gallons containing 0.012 mc of gross beta-gamma activity and 0.121 curies of tritium.
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i e by film badge, for the month of December,1971 were as follows:
Radiation exposure doses for Yankee plant personnel as measured l
Average accumulated exposure dose:
55 mrem i
Maximum accumulated exposure dose: 690 mrem Operations i
Attached is a summary of plant operating statistics and a plot of daily average load for the month of December,1971.
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YANKEE ATOMIC ELECTRIC COMPANY - OPERATING SU'&ARY DECEMBER 1971 MONTH YEAR TO DATE ELECTRICAL Grosa Generation KW l21,247,700 1,520.004,600 13.015,875,900 sta. Service (While Gen. Incl. Losse-)
KW 7,838,967 93,044,589 841,069,614 KW 113,408,733 1,426,960,011 12,174,806,286 Net output Station Service 6.47 6.12 6.46 Sta. Service (While Not Gen. Incl. Losses) KWH 0
810,283 33,099,138 Ave. Gen. For Month (744)
KW 162,967.3 h
Ave. Gen. Running (744)
KW 162,967.3 PLANT PERIORMANCE Net Plant Efficiency 28.30 28.45 28.48 Net Plant Heat Rate btu /KWH 12,059 11,996 11,983 Plant Capacity Factor 89.77 95.44 77.00 1.
Reactor Plant Availability 5
100.00 97.56 85.18 MONTH CORE IX TOTAL NUCLEAR Hours critical HRS 744 9,364.34 84,328.74 0
3 64 Times Scr.used Burnup Core Average M4D/MTU 803.79 10,957.79 Region Average MJD/MTU A (INNER) 822.18 10,760.75 27,964.42 B (MIDDLE) 922.05 12,811.63 21,553.48 C (OUTER) 683.69 9,127.70 9,127.70 D (ZIRCALOY)
YANKEE ATOMIC 7IC COMPANY t
i DAILY AVERAGE LOAD FOR DECE:EER 1971 200_
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