ML19323B892
| ML19323B892 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 05/05/1980 |
| From: | PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | |
| Shared Package | |
| ML19323B889 | List: |
| References | |
| NUDOCS 8005140385 | |
| Download: ML19323B892 (10) | |
Text
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t PEACH BOTTOM ATOMIC POWER STATION MONTHLY REPORT NO. 79
.l for l
JANUARY 1980 l
l THERMAL M3 3IOLOGICAL t
1 MONITORING PROGRAMS 4
FOR i
f UNITS NO. 2 AND 3 t
i PHILADELPHIA ELECTRIC COMPANY l
l l .-
I '. _.-- _ _ _ _ _ _ . _ _ _ , _ _ _ . . . . , _ . . _ . _ _ _ , , _ . . _ , , . _ , , _ , _ , . . _ . . _ _ _
MONTHLY REPORT NO. 79 FOR JANUARY,1980 THERMAL AND BIOLOGICAL MONITORING PROGRAMS PEACH BOTTOM ATOMIC POWER STATION UNITS NO. 2 & 3 The monthly mean delta T temperature (650 hourly readings) for the state line minus S2 location was 2.52*F higher than the mean of the preoperational experience. The 5*F delta T above ambient criteria at the state line was exceeded 9 out of 650 observations in the post-op with the plant operating. Also in January 18 observations out of 650 exceeded the ambient criteria with no 5* delta T credit since the plant was not operating.
The daily river flows as measured at Holtwood Hydro-electric Station and the daily generation at PBAPS in thermal megawatts for the reporting period are presented in Table 1. Table 2 summarizes the hourly Conowingo Pond temperatures and Table 3 shows the impact hours above January confidence limits. Figure i shows the instrument and survey locations.
Figures 2, 3, and 4 are isotherm plots, which include three (3) horizontal sections of boat surveys made during the January recording period. Boat survey information is tabulated in Table 4. Surveys for this period were started at the north end of Conowingo Pond. The delta T at the state line indicated on the isotherms is calculated by sub-tracting the Holtwood Dam temperature and the hourly Confidence Limit (applicable to the mid-survey time) from the state line temperature.
This delta T can be interpreted as being caused by PBAPS since ambient hourly variations at the. state line have been considered.
Although the isotherm plots do not cover the entire reporting period on a daily, hour by hour basis and cannot be used as a continuous indication of temperature variation, they do represent a fair treatment of typical plume characteristics. In addition, they may also be used as an empirical tool in estimating probable plume patterns in advance of certain natural and plant operating conditions.
HOL Iw000 DAIL Y F LOW 5 f Cf 5 3 AND DAILY TH3CMAL MtGAW4115- JAN 1983 .
t 065 YEAR MONTH DAY HW_ FLOW MW_1HERM ,'
I 80 1 1 49400 3287 2 80 1 2 43900 3291 3 80 1 3 39800 3290 4 80 1 4 37200 3192 5 80 1 5 32600 3284 6 80 1 6 21300 3286 7 80 1 1 28200 3284 8 80 1 8 25000 1288 9 80 1 9 23400 3571 10 80 t to 20500 3699 il 80 I il 20600 2989 12 80 1 12- 20800 7 13 80 1 13 20200 .
14 80 1 14 22200 .
15 80 1 15 22300 .
16 80 1 16 27000 .
4 I? 80 1 17 31700 .
- 18 80 1 18 33800 1566 19 80 1 19 33800 2687 20 80 1 20 12700 5323 i 21 80 1 21 29500 6213 22 60 1 22 , 26600 5146
( 23 80 1 23 25200 5971 1 24 80 1 24 23'.00 6498 25 80 1 25 21230 6445 26 80 1 26 20600 5421 i 27 80 1 27 18400 6074 28 80 1 28 16100 6523 i t 29 80 1 29 17400 5060 i 30 60 1 30 14200 3201 31 80 1 31 13000 3182 I 6 I TABLR I I I , 6 I , ,
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VORIABLE N MEON STANDACO MINIMUM MANIMUM c' g
- DEVIAil0N VALUE VALUE g
.. a HW_ FLOW 744, 26354.84 8405.88 13000.00 49400.00 1 MW_ THERM 624 4068.12 1620.00 7.00 , 6523.00 52 669 -
1.61 0.91 0.30 4.30 525 669 1.61 0.91 0.30 4.10 513 725 - 2.86 1.07 0.80 6.00 513A 725 2.92 1.18 0.90 6.40
. 5135 725 2.86 1.07 0.80 6.00 530 743 1.96 0.93 0.30 4.30 531 706 10.38 5.59 0.20 19.00
, 532 ' 742 -
10.00
- 4.90 0.90 17 00 .
013_2 650 1.29 1 03 -0.50 4.10
, 02.2A . 669 -1.84 5.32 . -18 60 1.50 .
, 013.13A 725 .-0.06 0.40 -2.50 1.40 031.30 706 8.52 5.12 -1.10 15.80 032.30 742 8.04 4.39 -0.60 13.60
, 031_32 706 0.58' !.01 -1.10 3.50 05135525 650 1.29 1.03 -0.50 4.10 .
3 Definitions are se followet' .
- N- Humbe'r of obegrvatione during the m2 nth . .
I S- Thermograph Station (e.g., S2 is thermograph Station 2)
(
- o (TEMPERATURES ARE Igl DECREES. CENTIGRADE)
I D- Difference in temperature of the two stations I (e.g. D13-2 is the temperature at Station 13 minue the temperature at Station 2, in Jagrees CentigraJe) 1
( IW Ft.0W - HoltvooJ Flow to CFS *
~
I MW THERM--Total Thermal Output of PBAPS in Megawatts
- Sl33 - Thermograph $13A la substituted when $13 is missing'or I spurious readings are observed I
S2S - Thermograph S2A is substituted when S2 to missing or ,
spurious readings are observed. -
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TABLE 4 BOAT SURVEY INFORMATION SURVEY DATE 1/8/80 1/23/80 1/30/80 TIME:
Survey Start (EST) 0815 0900 0830 State Line (EST) 0922 1004 0940 State Finish (EST) 1030 1115 1115 RYDRAULIC DATA:
Pond Elevation Start (Ft.) 108.20 108.11 107.91 Pond Elevation Finish (Ft.) 107.76 107.78 107.81 Natural Flow (24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> ave. , CFS) 24,300 24,000 12,500 Conowingo Inflow (24 hrs. ave., CFS) 26,000 24,100 12,650 Conowingo Dam Draft (24 hr. ave., CFS) 23,375 27,400 17,300 PBAPS Power Output:
Unit 2: Thermal (MW) 0 2679 3201 Electrical (MW) -12.3 833 1020 Unit 3: Thermal (MW) 3288 3292 0 Electrical (MW) 1074 1080 -12.7 METIOR0 LOGICAL DATA: .
Time (EST) 0810 0850 -
0825 Air Temperature (*F) 30 39 24 Relative Humidity (2) 50 80 60 Precipf.tation (24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> total, in) 0 0 0 Wind Speed (mph) 5 2 32 Cloud Over Partial Full Partial Location: 7 7 7 Wind Direction NW NW NW WATER TEMPERATURE (THERM 0 GRAPH)
Daily Mean: Sta. #2 *C, (*F) 1.3(34.3) 2.5(36.5) .5(32.9)
Mid Survey: Sta. #2, *C, (*F) 1.7(35.1) 2.6(36.7) .5(32.9)
WATER TEMPERATURE (SURVEY)
PSAPS Discharge *C, (*F) 3.4(47.1) 11.9(53.4) 6.9(44.4)
Intake 'C, (*F) .8(33.4) 25 (3 6 .5) 0(32.0)
Delta T *C, (*F) 7.6(13.7) 9.4(16.9) 6.9(12.4) :
Pond Surface Max. *C, (*F) 8.3(46.9) 12.7(54.9) 7.0(44.6) !
Min. *C, (*F) .7(33.3) 2.0(35.6) .1(30.0) l Pond Bottom Max. 'C, (*F) 8.6(47.5) 13.3 (55.9) 7.7(45.9) !
Min. 'C, (* F) .6(33.1) 2.0(35.6) .1(30.0)
No. of C.W. Pumps Operating 3 4 3 No. of Cooling Towers Operating 2 2 2 I
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