ML19344D220
| ML19344D220 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 11/30/1979 |
| From: | PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | |
| Shared Package | |
| ML19344D218 | List: |
| References | |
| NUDOCS 8003110558 | |
| Download: ML19344D220 (10) | |
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- PEACH BOTTOM ATOMIC -PO'4E R STATION f
(
l' i
MONTHLY' REPORT NO.
77 4
l for' 1
-NOVEMBER 1979 i
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4 1
1
' THERMAL AND BIOLOGICAL MONITORING PROGRAMS l'
FOR 4
l UNITS NO. 2 AND 3 0
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PHILADELPHIA ELECTRIC COMPANY i
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M ONTit LY REPORT NO. 77 FOR NOVEMBER, 1979 THERMAL AND BIcLOGICAL MONITORING F.10 GRAMS PEACH BOTTOM ATOMI POWER STA7.'XON UNITS NO. 2& 3 The operation of PBAPS during the month of November, 1979 was well within all applicable thermal criteria.
The monthly mean delta T temperature (649 hourly readings) for the state line minus S2 location was 1.19'F higher than the mean of the preoperational experience.
The 5'F delta T above ambient criteria at the state line was not exceeded on an hourly basis due to plant operation.
The daily river flows as measured at Holt-ood 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 November 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 November 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 temperatore 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 uand as a continuous indicatlan 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.
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ABLE I HOL1 WOOD DAILY FLOWSICl e i Ai43 D A j LY THERMAL EtGAWATTS-NOV 1979
, g 085 YEAR MGNTH DAY HW. FLOW MW THERM g
1 79 11 1
21300 3270 2
79 11 2
21300 3164
's 79 11 3
33700 2368 79 11 4
74500 3092 5
79 11 5
77300 3280 3
6 79 11 6
72200 3895 7
79 11 7
61600 4256 8
79 11 8
53000 4479 q
9 79 11 9
46700 5316 10 79 11 10 40900 5119 11 79 11 11 39000 4716 qg 12 79 11 12 37300 3286 13 79 11 13 35300 3286 14 79 11 14 33300 4391 3g 15 79 11 15 31700 5817 16 79 11 16 30000 6432 17 79 11 17 28800 5736 cg 18 79 11 18 27500 6256 19 79 11 19 27200 6573 20 79 11 20 26500 6302 g
21 79 11 21 24400 5694 22 79 11 22 23300 4658 23 79 11 23 22300 5433 g
24 79 11 24 22400 5774 25 79 11 25 21300 5768 26 79 11 26 23800 5770 I
27 79 11 27 44100 5775 28 79 11 28 145500 5781 29 79 11 29 165600 5790 30 19 11 30 129000 5777 1
a e
d TABLE 2 n
., i.v /
D*
r.00k t v (CNow!NGC DDND W Alin IE MPE R A TURES NOV,le?o
%AmlacLi N
MEAT.
51ANDARD MINIMUM MaalMu%
afblaTION VALUE vaLUE t
Nw_ FLOW 720
'bO2e.67 Se803.59 21300.00 leS603.0C M _lbfRM '
720
-908.47 1166.00 2368.00 e573.33 52 6ct 9.42 1.25 7.10 13.00 t
52A ew?
w.el 1.35 7.00 13.30 525 4 9 c-9.42 1.25 7.10 13.C0 513 e72 10.13 1.16 7.80 13.70 513A 073 10.41 1.15 7.90 14.00 51?S 573 10.13 1 16 7.80 13.70 530 716 9.60 1.26 7.50 13.40 9
531 0
532 717 17.39 1.55 14.20 21 70 013_2 649 0.71 0.54
-1.00 2.30 1
D2.2A.
695
-0.19 0.19
-0.70 0.40 013.13A 672
-0.27 0.28
-1.30 0.90 I
031_30
-0 D32_30 717 7.79 1 65 3.70 10.60 C31_32 0
05135525 640 0.71 0.54
-1.00 2.30 4
1 9
Definitions are as follows:
N-Number of observations during the month S-Thermograph Station (e.g.
52 is thermograph Statinn 2)
=
(TEMPERATURES ARE IN DEGREES CENTICRADE)
D-Difference in temperature of the two stations (e.g. D13-2 is the temperature at Station 13 minus the temperature at Station 2. In degrees Centigrade)
IN. FLOW - Holtwood Flow in CFS MW THERM-Total Thermal Output of PBAPS in Megaustts
$13S -
thermograph S13A is substituted when S13 is missing or spurious readings are observed S2S -
Thermograph S2A is substituted when $2 is missing or spurious readings are observed.
Pip s Iir-ti a cAH r. 2 EGv E N3e EttB Ek CGN51DENCE LIMITS
- 085 YEAR MONTH DsY FOUR 52T' 513T D13.2 Hw_ FLOW MW.T HE R M STATUS CL 13.2 EX13.2 IMP 13.2
-I-73 Il 11 3
5.8 7.2 1.4 23000 PRE _OP 1.3 0.1 0.18 2
73 11 11 4
5.P 7.3 1.5 23800 PRE _OP 1.4 0.1 0.16 3
73.
11 11 13 5.4 7.5 1.6 23800 PRE _DP 1.5 0.1 0 18 6
There were no hourly exceptions in November, 1979.
J.!1 ItI e.
6 Thermograph S
=
Delta T (C')
.D
=
Hw Flow = Boltvood Daily River Flow (cfs) i HW Thera = Daily Thermal Generation of PBAPS (megawatte)
Confidence Limit (C')
CL
=
Exceptions (C')
4-EX
=
Impact (F*)
Ihr a
e 4
e 1
d 9
m.
TABLE 4 BOAT SURVEY INFORMATION SURVEY DATE 11/6/79 11/21/79 11/27/79 TIME:
Survey Start (EST) 0945 0915 0925 State Line (EST) 1105 1315 1016 Survey Finish (EST) 1300 1335 1135 HYDRAULIC DATA:
Pond Elevation Start (Ft.)
107.78 107.91 104.35 Pond Elevation Finish (Ft.)
108.23 107.58 103.97 Natural Flow (24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> ave., CFS) 69,000 20,900 40,800 Conowingo Inflow (24 hrs ave., CFS) 69,200 28,175 41,525 Conowingo Dam Draft (24 hr. ave., CFS) 67,025 37,950 61,850 PBAPS Power Output:
Unit 2: Thermal (MW) 3286 3199 3286 Electrical (MW) 1065 1042 1064 Unit 3: Thermal (MW) 609 2495 2489 Electrical (MW) 27 808 800 METEOROLOGICAL DATA:
Time (EST) 0940 0920 0930 Air Temperature (*F) 57 45 54 Relative Humidity (%)
63 93 55 Precipitation (24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> total, in)
Wind Speed (mph) 3-5 5
10 Cloud over Partly Clear Clear Location:
7 7
7 Wind Direction S
N WNW WATER TEMPERATURE (THERM 0CRAPH)
Daily Mean:
Sta. #2,
- C,
(
- F) 9.8(49.6) 8.1(46.6) 11.0(51.8)
Mid Survey:
Sta. #2, *C, (*F) 10.0(50.0) 8.5(47.3) 11.2(52.2)
WATER TEMPERATURE (SURVEY)
PBAPS Discharge
- C, (*F) 14.9(58.8) 15.9(60.6) 18.0(64.4)
)
Intake
- C, (*F) 9,8(49.6) 7.9(46.2) 11.4(52.5)
AT
- C, (*F) 5.1( 9.2) 8.0(14.4) 6.6(11.9)
Pond Surface Max.
- C, (*F) 14.7(58.5) 15.9(60.6) 18.0(64.4)
Min.
- C, (*F) 9.8(49.6) 7.7(45.9) 10.C(50.0)
Pond Bottom Max.
- C, (*F) 14.9(58.8) 16.4(61.5) 18.3(64.9)
Min.
- C, (*F) 9.5(49.1) 7.7(45.9) 10.0(50.0)
No. of C.W. Pumps Operating 6
6 6
No. of Cooling Towers Operating 1
2 2
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