ML19351E363
| ML19351E363 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe |
| Issue date: | 02/24/1969 |
| From: | YANKEE ATOMIC ELECTRIC CO. |
| To: | |
| Shared Package | |
| ML19351E362 | List: |
| References | |
| NUDOCS 8011280174 | |
| Download: ML19351E363 (8) | |
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YANKEE NUCLEAR POWER STATION
.l OPERATICN."IPORT NO. 97 For the Month of January 1969 Submitted by YANKEE ATOMIC ELECTRIC COMPANY Boston Massachusetts
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l This report covers the operation of the Yankee Atomic Electric Company plant at Rowe, Massachusetts for the" month of January,1969 At the beginning of the period, plant load was 186.6 MWe.
On January 18 at 1900 hours0.022 days <br />0.528 hours <br />0.00314 weeks <br />7.2295e-4 months <br />, a scheduled ho; standby shutdown for reactor l
operator trainirg commenced. This outage was. concluded'on January 19 j
Plant load during the remainder of the period varied between 18h.9 M4e l
& 187.1 MWe as circulating water inlet temperature fluctuated between i
37 F and 34 F.
The sixth Core VII air charge to the vapor container was made on January 20 and 21.
Air leakage from the containment was normal during tne previous surveillance period.
Load was reduced on January 3rd and hth to 145 MWe for a total of 3.3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> to permit testing of the turbine throttle valves.
In addition the monthly control rod exercise and other routine tests were completed, successfully.
Plant Shutdowns Shutdown No. 96-7-9 1/18/69 - 1/19/69, scheduled hot standby shutdown; reactor operator training.
onutdown duration:
26 hours3.009259e-4 days <br />0.00722 hours <br />4.298942e-5 weeks <br />9.893e-6 months <br />, 5 minutes.
Plant Maintenance
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The following is a list of pertinent maintenance items performed by the plant staff during the month of January,1969 1.
Fabrication of 20 radiation shields for control rod driva shaft pressure l
housings has been completed.
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The No. 1 charging pump was repacked.
3 New gaskets vere installed at the discharge valve plate and inlet flange of 10. 2 charging puno, l
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New rings and plungers were installed in No. 3 charging pump.
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5 The valve position indicating pointers en the turbine throttle valves
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were refurbished.
l 6.
New valves and diaphragms were installed in No. I waste gas compressor.
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A check valve has been installed between the waste disposal evaporator hydrogen vent and the piping to the oxygen vent and the overhead condenser, j
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. Instrumentation and Control The following is a list of pertinent instrumentation and control i
maintenance performed by the plant st aff during-the month of January,1969 1
1.
A new position indication system was installed on~ control rod No. 1 for testing.
2.
Work was continued on modifications to the incore flux wire system.
i Reactor Plant Performance l
l The followir, parameters were determined by means of incore l
instrumentation :
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596.5 MWt; 52h.5 Tavg; Control Rod Group A @ 87 0/8; B, C, D @ 89 5/8; 180 ppm boron.
1.8 F
=
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l'I UI 3.6 Minimum ENBR
=
l 580 5 l
Maximum outlet temperature
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Secondaly Plant Performance i
Feedwater heater terminal differences were as follows:
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11.80F No. 3 5.20F Ho. 2 6.0 F Ho. 1
=
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The condenser performance was as follows:
186.1 MWe; 1.0h" Hg P.P.; 596.8 MWt; 34.2 F C.W. in; 23.10F; clean;iuess factor 100%
=
=
Chemistry The main coolant boron concentration was decreased from 252 ppm to 122 ppm during the period to compensate for nonnal core depletion.
Average main ecolant pH sas 5.8.
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Coolant average gros aeta-gamma activity and crud level were 7.6 x 10-2 uc/ml and 0.02 ppm, respectively.
l The main coolant tritium specific activity averaged 2.2h uc/ml during the month.
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. The iodine - 131 specific activity was 2.0 x 10~
uc/ml and the iodine 131/133 stanic ratio was 0.81, indicating the absence of detectable fuel defects.
A representative crud sample for the month, collected on January 20, had the following radiochemical analyses: dpm/mg crud I
Cr-51 Mn-5h Fe-59 6
6 8.h8 x 10 2.79 x 10 2.10 x lob I
co-58 co-60 Ag-110M 2.36 x 10 7.90 x 10 h.22 x 104 7
D A main coolant gas sample collected on January 6, nad Ine following radicchemical analyses: uc/cc gas
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l Xe-133 Xe-135 Ar kl 8.71 x 10~
9 10 x 10-3 h.73 x 10-1
- t. pressurizer gas test similar to that reported fcr December, 1968 was completed during this report period. Once again, there was no significant increase in gas quantity, presumably due to solenoid relief valve leakage. Due to the lack of informaticn gained from these two tests, the pressurizer gas test program has been terminated.
I Health and Safety Waste disp'ssal liquid releases totalin6 y,700 gallons contained O.C35 me of gross b,ta-gamma activity and 97.57 curies of tritium. Gaseous 7eleases during this period were lh6.90 mc ci gross beta-gamma activity.
Secondary plant 1. tar discharged was 321,125 gallo:is and contained 0.009 ac o! gross beta-garnc ictivity and 1.732 curies of tritium.
Radiation exposure doses for Yankee plant personnel, as measured by film badge, for the month of January,1969 vere as follows:
4 Average cccumulated exposure dose:
L8 nrem.
I Maxina, accumulated exposure dose 230 trem.
The following is a summary of all liquids, gases, and solids I
released, di; charged, or shipped from the plant during the year 1968.
Waste Disposal Liquid:
522,711 gallons containing a total beta-gamma activity of 0.63 me and 1,157.7 curies of tritium, i
4-F Gas:
A total beta-gamma activity of 0.661 curies, and 8.0h curies of tritium.
Airborne Particulate:
A total of 7.09 uc of beta-gamma activity.
Solids for Disposal:
509 drums cent 4ains a total activity of h.3h curies, and two casks containing a total activity of 610.26 curies.
Secondary Plant and Miscellaneous l
l Liquid:
3,351,215 gallons containing a total beta-gamma activity of 7.75 me and 12.53 curies of tritium.
Fuel Shipments During 1968 there were four shipments of spent fuel totaling 36 assemblies with a total activity of 62.05 megacuries.
i Operations Attached is a summary of plant operating statistics and a plot of daily average load for the month of January,1969 i
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YANKEE ATOMIC ELECTRIC COMPANY - OPERATING
SUMMARY
January 1969 ELECTRICAL MONTH YEAR TO DATE Gross Generation KWH 133,360,600 133,360,600 9,137,122,400 Sta. Service (While Gen. Incl. Losses)
KWH 7,P90,900 7,990,900 602,585,159 Net Output KWH 125,369,700 125,369,700 8,534,537,241 Station Se - ice 5 99 5 99 6.59 Sta. Servisc,4hile Not Gen. Incl. Losses) KWH 179,952 179,952 26,463,602 Ave. Gen. For Month (744.00)
KW 179,2h8 Ave. Gen. Running (717 92)
KW 185,760 PLAKT PERFORMANCE Net Plant Efficiency 5
29 29 29 29 28.38 Net Plant Heat Rate btu /KWH 11,652 11,652 12,025 Plant Operating Factor 5
95.87 95.87 74.81 i
Reactor Plant Availability 96.68 96.68 84.05 e
I NUCLEAR MONTH CORE VII TOTAL Hours Critical HRS 724.63 6,467.89 61,575.31 Times Scramed 0
2 57 Burnup Core Average MWD /MTU 863.04 7,606.60 Region Average MWD /MTU A (INNER) 955.hhh 7,881.161 25,735.43 B (MIDDLE) 1,013.501 8,909.883 18,897.31 C (OUTER) 681 709 6,093.869 6,093.87 D (ZIRCALOY) 869.w8 7.736.285 7sT36.29
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