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Meteorological and Meteorological and Oceanographic Monitoring at Oceanographic Monitoring at Diablo Canyon Nuclear Power Diablo Canyon Nuclear Power PlantPlant
John Lindsey
The Diablo Canyon Power located on a fourteen mile stretch of open coastline.
Diablo Canyon Power Plant produces 2.1 Megawatts
The plant uses a high volume of ocean water for cooling.
Each Circulating Water Pump rated at 13,000 horsepower.
1.7 million gallons per minute, or 2.5 billion gallons per day.
Biofouling Control TeamStorm Swell Intake Evaluation
Summary Note: This Evaluation Summary and Worksheet is for guidance only.
Date: Evaluator:
Team Recommendations:
Plant impact potential: Primary threat to: Screens Condenser
Bull Kelp
1. Wind speed.
2. Wind duration.
3. Length of wind fetch.
Maxium Water parttide motion at 25 feet w ith a 15 foot w ave
0
5
10
15
20
25
30
35
5 10 15 20 25Wave period in seconds
Feet
Per
Sec
ond
During periods of extreme swell activity, power plant operations can be challenged.
27.6 MHz Waverider receiver at the DCPP Ocean Lab
S4 Current Meter
Ekman Spiral
November Daily Seawater Temperatures
50
52
54
56
58
60
62
64
66
68
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Date
Tem
per
atu
res
F
2000 Temp
1997 Temp
0
10
20
30
40
50
60
70
Yearly Rain Fall Seawater Temperature
The Diablo Canyon Weather ForecastThe Diablo Canyon Weather Forecast
============= DCPP Weather Forecast for Saturday 05/04/02 ===================
SWELL:
A 3 to 5 feet combined northwesterly sea/swell with a 5 to 9 second period will continue through
tomorrow. Fresh to strong northwesterly winds will generate a 5 to 7 foot combined northwesterly
sea/swell with a 7 to 11 second period on Monday and Tuesday.
Combined with this northwesterly sea/swell will be a 1 to 2 foot southern hemisphere swell
with a 13 to 17 second period through Sunday. Southern hemisphere swell will increase to 2
to 4 with a 14 to 18 second period on Monday and Tuesday.
ATMOSPHERIC CONDITIONS:
Low clouds and fog will develop during the night and morning hours along coastline. Otherwise,
mostly fair weather will continue through Friday.
WINDS:
Moderate to fresh northwesterly winds will continue through Sunday.
Fresh to strong northwesterly winds will develop on Monday and Tuesday.
Northwesterly winds will decrease on Wednesday and Thursday.
Today's winds:
Max sustained wind: NW 23.3 mph (1800)
Max peak winds: NW 24.3 mph (1800)
Yesterday's Winds
Max sustained wind: NW 26.8 mph (1600)
Max peak winds: NW 34.7 mph (1600)
DIABLO CANYON AIR TEMPERATURES:
Yesterday's Today's Tomorrow's
Min Max Min Max Min Max
48.9 F 55.6 F 48.8 F 54.4 F 48.0 F 55.0 F
SEAWATER TEMPERATURES:
Intake seawater temperatures will range between
49 to 51 degrees through Sunday, decreasing to 48
to 50 degrees on Monday through Wednesday.
OCEAN CURRENTS:
A southerly flowing (offshore) current will continue
through Wednesday.
SEAWATER VISIBILITY:
Seawater visibility was 32 feet (top to bottom) at the Diablo
Canyon Intake.
==========================================================================
24-Hour Ocean Condition Outlook for Saturday 05/04 through Sunday 05/05
SEA/SWELL: DIR. NW HT. 3-5 PER. 5-9 morning
Remaining at: DIR. NW HT. 3-5 PER. 5-9 afternoon
Remaining at: DIR. NW HT. 3-5 PER. 5-9 tonight
WINDS: DIR. NW SPEED 10-15 morning
Increasing to: DIR. NW SPEED 20-25 afternoon
Decreasing to: DIR. NW SPEED 5-10 tonight
===========================================================================
48-Hour Ocean Condition Outlook for Sunday 05/05 through Monday 05/06
SEA/SWELL: DIR. NW HT. 3-5 PER. 5-9 Sunday morning
Remaining at: DIR. NW HT. 3-5 PER. 5-9 Sunday afternoon
Remaining at: DIR. NW HT. 3-5 PER. 5-9 Sunday night
WINDS: DIR. NW SPEED 5-10 Sunday morning
Increasing to: DIR. NW SPEED 20-25 + 30 Sunday afternoon
Decreasing to: DIR. NW SPEED 15-20 Sunday night
==========================================================================
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