ML19351E229
| ML19351E229 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe |
| Issue date: | 12/31/1972 |
| From: | YANKEE ATOMIC ELECTRIC CO. |
| To: | |
| References | |
| NUDOCS 8011260288 | |
| Download: ML19351E229 (7) | |
Text
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l SD-M YANKEE NUCLEAR ?OWER STATION l
OPERATION REPORT #1h3 1
FOR THE MONTH OF NOVEMBER
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I Submitted by YANKEE ATOMIC ELECTRIC COMPANY Westboro, Massachusetts Decembe r, 1972 o u. o 6 0 9 Q
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This report covers the operation of the Yankee Atomic Electric Company at Rowe, Massachusetts for the month of November,1972.
The plant continued its maintenance outage throughout the report period. All core ecmponents were removed from the reactor vessel and the lower core barrel removed for inspection of the control rod j
shrouds. At the end of the report period the plant remained in a shutdown condition awaiting repair components.
Plant Abnormal Occurrences i
There were no plant abnormal occurrences during the report period.
Plant Shutdowns Shutdown No. 132-10-72: October 18, 1972 continuing tPrough the report period. A scheduled plant shutdown for replace-ment of control rods.
Outage continuing at end of report period.
Plant Maintenance The following is a list of pertinent plant maintenance items performed by the plant staff during the month of November,1972.
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1.
No. 2 Main Coolant Check Valve vna refurbished.
2.
The charging line spray valve CH-V-613 was repaired.
3.
The pressurizer code safety valves were tested and reset.
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- 30. 1 charging pump was repacked.
5.
Twenty-two control rods removeu rren the reactor vessel were sheared for transfer to the spent fuel pit.
l Instnrnentaticn and Control 1
The following is a list of pertinent instrumentation and control maintenance items performed by the plant staff during the month of November 1972.
1.
Calibration of the following channels were perforned:
a.
Narrow rance pressurizer level.
b.
Wide range pressurizer level.
. Steam generator level trip.
d.
Main coolant flow trip.
e.
Feedwater flow tronomitters, indicators and recorders.
2.
The low pressure alarm switch for the safety injection accumulator was reolaced with a combination pressure indicator and high-low alarm contacts.
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3.
The electronic amplifier and the alarm units for the load measuring system of the manipulator crane were replaced.
Chemistry i
The main coolant boron concentration and pH averaged 2331 ppm and 5.11, respectively, during the report period.
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The main coolant beta-gamma specific activity decreased from 2.h2 x 10-3 ue/ml at the beginnine of the month to h.5h x 10-5 ue/ml at the end of the month due to dects and ion exchange.
The main coolant tritium c oncentration averaged 4.35 x 10-2 ue ' nl.
The main coolant iodine cecreased to 8.26 x 10-6 ue/ml during the period.
i A crud sample for the manth collected on November 1, had the fs11oving radiochemical analyses. dpm/cg crud Cr-51 Mn-5h Fe-59 C -58 g
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5 3.75 x 10' 1.07 x 10 1.39 x 10 3.70 x 10 Co-60 Ag-110M Zr-95 Sb-124 5
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2.59 x 10 6.25 x 105 3.75 x 10 2.91 x 10 Health and Safety i
Three shipments totalling 220 drums of low level vaste containing 305.8 =c were made during the period.
' Waste disposal liquid releases totalled 35,778 gallons containing 0.051 me of gross beta-gamma activity and 13.99 curies of tritium, Gaseous releases during the period totalled h.16 curies of gross beta-gamma activity and 2.10 curies of tritium. There were no secondary releases during the period.
l Radiation exposure doses for Yankee perronnel, UEPSCo personnel l
and Outside Contra: tor personnel as measured by film badge for the month of j
Uovember, 1972 were as rollows:
1 Yankee Plant Personnel Average accumulated exposure dose:
20h mrem Maximum accumulated exposure dose:
830 mrem 1
NEPSCo Personnel l
Average accumulated exposure dose:
264 mrem Maximum accumulated exposure dose:
6h0 mrem Outside Contractor Average accumulated exposure dose:
660 mrem Maximum accumulated exposure dose:
2730 mrem i
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Operations l
Attached is a su= mary of plant operating statistics and a plot I
of daily average load for the month of November,1972.
The following Operating Instructions have been revised and reiss"ad:
OP-226 Spent Puel Pit Cooling, Alternate Method OP-281 Removal of Bleed Line From Service OP-282 Return of Charging and Bleed Lines to Service I
OP-28h Removal of Complete Core to Spent Puel Pit OP-405 Inspection of New Control or Shim Rods OP-406 Reactor Lower Core Support Structure, Femoval and Replacement OP-520 Valve or Pipe Section Replacement OP-576 Inspection of Puel Handling Equipment OP-577 Unitized Control Rod Shearing OP-578 Movement of Control and Shim Rods to V.C.
OP-579 Main Coolant Check Valve Repair OP-630 S.I. Loop Pressure Instrument Calibration OP-900 Titrimetric Chloride Analysis The following Plant Design Change Requests have been completed:
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72-1 Diesel Oil Makeup Controls Power Supply 72-3 Change of Pressurizer Wide Pange Level Channel from No. 3
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to No. 2 Primary Inrtrument Power Supply 72 L Vital Bus Cabinet Wiring 4
72-7 Control Board Ventilation Change 72-8 Check Valve Addition to Vapor Container Recirculation System Piping 72-9 Main Steam Line Safety Valve nozzle Supports 72-16 Low Main Coolant Flow Trip System Modifications 72-17 Safety Injection Accumulator Hitrogen Regulator Pilot Valve Replacement 72-18 Bedundant S.I. Accumulator Tank Le el Indication 72-19 Main Coolant Flow Transmitter Vent Modifications (See EDCR 72-7) 72-20 Charging Line Replacement at Vapor Container Penetration The following Engineering Design Change Request has been completed:
72-7 Main Ccolant Flow Transmitter Vent Modification (See PDCR 72-19) l
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l YAHi&'E ATOMIC ELECTRIC COMPANY - OPERATING SU?GtARY NOVEMBER 1972 ELECTRICAL MONTH YEAR TO DATE Gross Generation KWH 0
690,113,200 13,705,989,100 Sta. Service (While Gen. Incl. Losses)
KWH 0
h5,629,191 886,698,805 Net Output KWH 7
6hh,h84,009 12,819,290,295 Station Service N/1 6.61 6.h7 Sta. Service (While Not Gen. Incl. Losses) KWH 505,362 6,260,358 39,36h,750 l
Ave. Gen. For Month KW 0
Ave. Gen. Running KW 0
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PLANT PFrirDRfWiCE 1
Net Plant Efficieng 0
28.80 28.50 Net Plant Heat Rate btu /KWH N/A ll,8h9.83 11,97h.56 l
P1arrt Capacity Factor 0
h6.38 74.55 k'
j Reactor Plant Availability 0
60.16 83.39 NUCLEAR MONTH CORE X TOTAL Hours Critical HRS o
3,75h.15 89,239.14 l
Times Scrammed N/A 9
70 Burnup I
Core Average M4D/MTU 0
3,726.81 j
Begion Average M4D/MTU A (INNER) 0 3,279.05 21,63h.55 B (MIDDLE)
O h,080.6h 1h,051.)9 C (OUTER-ZIRCALOY) 0 3,380.h3 3,380.h3 1
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O YAN'r:EE ATOM.
IC COMPANY DAILY AVERAGE LOAD l
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