A NEW STANDARD IN METEOROLOGICAL MONITORING SYSTEMS INSTALLED AT THE PERRY NUCLEAR POWER PLANT Jim H

1
A NEW STANDARD IN METEOROLOGICALMONITORING
SYSTEMS INSTALLED AT THEPERRY NUCLEAR POWER
PLANTJim Holian (SAIC) and Jamie Balstad
(First Energy Corp)
2
Meteorological Parameters
3
Meteorological Parameters

• Systems A and B
• 10 and 60 meter wind speed and direction
• Delta-t (60m-10m)
• 10 meter temperature

4
Meteorological Parameters

• Systems A and B
• 10 and 60 meter wind speed and direction
• Delta-t (60m-10m)
• 10 meter temperature
• System A only
• 10 meter dew point
• Station Pressure
• Precipitation 

5
Design Basis
6
Design Basis

• Two Beers

7
Design Basis

• Two Beers
• Validation without elimination

8
Design Basis

• Two Beers
• Validation without elimination
• Reduce false 9 out of data

9
Design Basis

• Two Beers
• Validation without elimination
• Reduce false 9 out of data
• Include onsite conditions/climatology

10
Design Basis (continued)

• Produce a valid data set that is the best of

11
Design Basis (continued)

• Produce a valid data set that is the best of
• Reduce manual labor

12
Design Basis (continued)

• Produce a valid data set that is the best of
• Reduce manual labor
• Decrease maintenance costs

13
Design Basis (continued)

• Produce a valid data set that is the best of
• Reduce manual labor
• Decrease maintenance costs
• Independently shut down individual sensors

14
Site-Specific Software
15
Site-Specific Software

• Detects the presence of wind direction shear
  between tower levels

16
Site-Specific Software

• Detects the presence of wind direction shear
  between tower levels
• Identifies differences in the data attributable
  to tower interference

17
Site-Specific Software

• Detects the presence of wind direction shear
  between tower levels
• Identifies differences in the data attributable
  to tower interference
• Recognizes light and variable winds

18
Site-Specific Software

• Detects the presence of wind direction shear
  between tower levels
• Identifies differences in the data attributable
  to tower interference
• Recognizes light and variable winds
• Identifies wind speed cup/threshold problems
  before they become obvious

19
Site-Specific Software (contd)

• Recognizes delta-t differences attributed to
  sunrise/sunset/precipitation onset

20
Site-Specific Software (contd)

• Recognizes delta-t differences attributed to
  sunrise/sunset/precipitation onset
• Identifies aspirator trips/fluctuations

21
Site-Specific Software (contd)

• Recognizes delta-t differences attributed to
  sunrise/sunset/precipitation onset
• Identifies aspirator trips/fluctuations
• Identifies problems associated with
  temperature/dew point/precipitation interactions

22
Site-Specific Software (contd)

• Recognizes delta-t differences attributed to
  sunrise/sunset/precipitation onset
• Identifies aspirator trips/fluctuations
• Identifies problems associated with
  temperature/dew point/precipitation interactions
• Ability to turn off any sensor remotely

23
PNPP Site Evaluation Criteria
MAX WIND SPEED DIFFERENCE BETWEEN SYSTEMS A/B 3
MPH MAX WIND SPEED DIFFERENCE 10-60 METER 10
MPH MIN WD WHERE TOWER IMPACTS WIND SPEED - A
75 DEG. MAX WD WHERE TOWER IMPACTS WIND SPEED -
A 100 DEG. MIN WD WHERE TOWER IMPACTS WIND SPEED
- B 100 DEG. MAX WD WHERE TOWER IMPACTS WIND
SPEED - B 115 DEG. WD WHERE TOWER IMPACTS BOTH
A/B WIND SPEEDS 100 DEG.
24
PNPP Site Evaluation Criteria
MAX WIND SPEED DIFFERENCE BETWEEN SYSTEMS A/B 3
MPH MAX WIND SPEED DIFFERENCE 10-60 METER 10
MPH MIN WD WHERE TOWER IMPACTS WIND SPEED - A
75 DEG. MAX WD WHERE TOWER IMPACTS WIND SPEED -
A 100 DEG. MIN WD WHERE TOWER IMPACTS WIND SPEED
- B 100 DEG. MAX WD WHERE TOWER IMPACTS WIND
SPEED - B 115 DEG. WD WHERE TOWER IMPACTS BOTH
A/B WIND SPEEDS 100 DEG.
25
PNPP Site Evaluation Criteria
MAX WIND SPEED DIFFERENCE BETWEEN SYSTEMS A/B 3
MPH MAX WIND SPEED DIFFERENCE 10-60 METER 10
MPH MIN WD WHERE TOWER IMPACTS WIND SPEED - A
75 DEG. MAX WD WHERE TOWER IMPACTS WIND SPEED -
A 100 DEG. MIN WD WHERE TOWER IMPACTS WIND SPEED
- B 100 DEG. MAX WD WHERE TOWER IMPACTS WIND
SPEED - B 115 DEG. WD WHERE TOWER IMPACTS BOTH
A/B WIND SPEEDS 100 DEG.
26
PNPP Site Evaluation Criteria
MAX WIND SPEED DIFFERENCE BETWEEN SYSTEMS A/B 3
MPH MAX WIND SPEED DIFFERENCE 10-60 METER 10
MPH MIN WD WHERE TOWER IMPACTS WIND SPEED - A
75 DEG. MAX WD WHERE TOWER IMPACTS WIND SPEED -
A 100 DEG. MIN WD WHERE TOWER IMPACTS WIND SPEED
- B 100 DEG. MAX WD WHERE TOWER IMPACTS WIND
SPEED - B 115 DEG. WD WHERE TOWER IMPACTS BOTH
A/B WIND SPEEDS 100 DEG.
27
PNPP Site Evaluation Criteria (contd)
MAXIMUM ALLOWABLE WIND SPEED 98 MPH MINIMUM
ALLOWABLE WIND SPEED -0.1 MPH MIN WIND SPEED
FOR WD VALIDATION 3 MPH MAX WIND DIRECTION
DIFFERENCE A/B 15 DEG. MAX WIND DIRECTION
DIFFERENCE 10-60 M 30 DEG. MIN WD WHERE TOWER
IMPACTS DIRECTION - A 60 DEG. MAX WD WHERE TOWER
IMPACTS DIRECTION - A 80 DEG. MIN WD WHERE
TOWER IMPACTS DIRECTION - B 80 DEG. MAX WD WHERE
TOWER IMPACTS DIRECTION- B 110 DEG. WD WHERE
TOWER IMPACTS BOTH A/B DIRECTIONS 80 DEG.
28
PNPP Site Evaluation Criteria (contd)
MAXIMUM ALLOWABLE WIND SPEED 98 MPH MINIMUM
ALLOWABLE WIND SPEED -0.1 MPH MIN WIND SPEED
FOR WD VALIDATION 3 MPH MAX WIND DIRECTION
DIFFERENCE A/B 15 DEG. MAX WIND DIRECTION
DIFFERENCE 10-60 M 30 DEG. MIN WD WHERE TOWER
IMPACTS DIRECTION - A 60 DEG. MAX WD WHERE TOWER
IMPACTS DIRECTION - A 80 DEG. MIN WD WHERE
TOWER IMPACTS DIRECTION - B 80 DEG. MAX WD WHERE
TOWER IMPACTS DIRECTION- B 110 DEG. WD WHERE
TOWER IMPACTS BOTH A/B DIRECTIONS 80 DEG.
29
PNPP Site Evaluation Criteria (contd)
MAXIMUM ALLOWABLE WIND SPEED 98 MPH MINIMUM
ALLOWABLE WIND SPEED -0.1 MPH MIN WIND SPEED
FOR WD VALIDATION 3 MPH MAX WIND DIRECTION
DIFFERENCE A/B 15 DEG. MAX WIND DIRECTION
DIFFERENCE 10-60 M 30 DEG. MIN WD WHERE TOWER
IMPACTS DIRECTION - A 60 DEG. MAX WD WHERE TOWER
IMPACTS DIRECTION - A 80 DEG. MIN WD WHERE
TOWER IMPACTS DIRECTION - B 80 DEG. MAX WD WHERE
TOWER IMPACTS DIRECTION- B 110 DEG. WD WHERE
TOWER IMPACTS BOTH A/B DIRECTIONS 80 DEG.
30
PNPP Site Evaluation Criteria (contd)
MAXIMUM ALLOWABLE WIND SPEED 98 MPH MINIMUM
ALLOWABLE WIND SPEED -0.1 MPH MIN WIND SPEED
FOR WD VALIDATION 3 MPH MAX WIND DIRECTION
DIFFERENCE A/B 15 DEG. MAX WIND DIRECTION
DIFFERENCE 10-60 M 30 DEG. MIN WD WHERE TOWER
IMPACTS DIRECTION - A 60 DEG. MAX WD WHERE TOWER
IMPACTS DIRECTION - A 80 DEG. MIN WD WHERE
TOWER IMPACTS DIRECTION - B 80 DEG. MAX WD WHERE
TOWER IMPACTS DIRECTION- B 110 DEG. WD WHERE
TOWER IMPACTS BOTH A/B DIRECTIONS 80 DEG.
31
PNPP Site Evaluation Criteria (contd)
MAXIMUM ALLOWABLE WIND DIRECTION 361
DEG. MINIMUM ALLOWABLE WIND DIRECTION -0.1
DEG. MAX SIGMA THETA DIFFERENCE A/B 10
DEG. MAX DIFFERENCE IN DELTA T A/B 1 F BOTH
10/60 METER ASPIRATORS OK 4.6 VOLTS 60-METER
ASPIRATOR HAS FAILED 4.2 VOLTS 10-METER
ASPIRATOR HAS FAILED 3.8 VOLTS BOTH 10/60 METER
ASPIRATORS FAILED 3.45 VOLTS MAX AMBIENT TEMP
DIFFERENCE A/B 1.2 F
32
PNPP Site Evaluation Criteria (contd)
MAXIMUM ALLOWABLE WIND DIRECTION 361
DEG. MINIMUM ALLOWABLE WIND DIRECTION -0.1
DEG. MAX SIGMA THETA DIFFERENCE A/B 10
DEG. MAX DIFFERENCE IN DELTA T A/B 1 F BOTH
10/60 METER ASPIRATORS OK 4.6 VOLTS 60-METER
ASPIRATOR HAS FAILED 4.2 VOLTS 10-METER
ASPIRATOR HAS FAILED 3.8 VOLTS BOTH 10/60 METER
ASPIRATORS FAILED 3.45 VOLTS MAX AMBIENT TEMP
DIFFERENCE A/B 1.2 F
33
PNPP Site Evaluation Criteria (contd)
MAXIMUM ALLOWABLE TEMPERATURE 110 F MINIMUM
ALLOWABLE TEMPERATURE -30 F MAXIMUM
ALLOWABLE DEWPOINT 82 F MINIMUM ALLOWABLE
DEWPOINT -30 F MAX DEW POINT EXCEEDING
TEMPERATURE 1.8 F MAX DIFFERENCE
CURRENT/PREVIOUS 15-MIN RAIN 0.99 IN. MAX
TEMPERATURE-DEWPOINT SPREAD W/RAIN 10
DEG. MINIMUM ALLOWABLE PRECIPITATION -0.1
IN. MAX ALLOWABLE 15-MINUTE PRECIPITATION 1.00
IN.
34
PNPP Site Evaluation Criteria (contd)
MAXIMUM ALLOWABLE TEMPERATURE 110 F MINIMUM
ALLOWABLE TEMPERATURE -30 F MAXIMUM
ALLOWABLE DEWPOINT 82 F MINIMUM ALLOWABLE
DEWPOINT -30 F MAX DEW POINT EXCEEDING
TEMPERATURE 1.8 F MAX DIFFERENCE
CURRENT/PREVIOUS 15-MIN RAIN 0.99 IN. MAX
TEMPERATURE-DEWPOINT SPREAD W/RAIN 10
DEG. MINIMUM ALLOWABLE PRECIPITATION -0.1
IN. MAX ALLOWABLE 15-MINUTE PRECIPITATION 1.00
IN.
35
PNPP Site Evaluation Criteria (contd)
MAXIMUM ALLOWABLE TEMPERATURE 110 F MINIMUM
ALLOWABLE TEMPERATURE -30 F MAXIMUM
ALLOWABLE DEWPOINT 82 F MINIMUM ALLOWABLE
DEWPOINT -30 F MAX DEW POINT EXCEEDING
TEMPERATURE 1.8 F MAX DIFFERENCE
CURRENT/PREVIOUS 15-MIN RAIN 0.99 IN. MAX
TEMPERATURE-DEWPOINT SPREAD W/RAIN 10
DEG. MINIMUM ALLOWABLE PRECIPITATION -0.1
IN. MAX ALLOWABLE 15-MINUTE PRECIPITATION 1.00
IN.
36
PNPP Site Evaluation Criteria (contd)
MAX ALLOWABLE STATION PRESSURE 30.75 IN/HG MIN
ALLOWABLE STATION PRESSURE 27.75 IN/HG MAX
15-MINUTE PRESSURE CHANGE 0.2 IN/HG MAXIMUM
ALLOWABLE DELTA-T 15.0 DEG. MINIMUM ALLOWABLE
DELTA-T -6.0 DEG. DEWPOINT ASPIRATOR HAS
FAILED 3.25 VOLTS DEW POINT 60 METER
ASPIRATOR FAILED 2.95 VOLTS DEW POINT 10 METER
ASPIRATOR FAILED 2.75 VOLTS ALL ASPIRATORS
FAILED 2.58 VOLTS
37
Wind Direction Sensor Algorithm
For both levels If neither wind speed reading is
obtained from front-end processor set valid
value to the bad wind speed value and set flag to
9 If both wind speeds were off or out of
range set valid value to the bad wind speed
value and set flag to 9 If one wind speed was
off or out of range set valid value to
good measurement and set flag to 5 if using
Train A or 6 if using Train B If both wind
speeds are a stuck value for last 12 15-minute
periods set valid value to the bad wind speed
value and set flag to 8 If only one current wind
speed is a stuck value for last 12 15-min
periods set valid value to the other train and
set flag to 7
38
Validity Flags
0 Normal data validation. Using System
A   1 Secondary validation required, using
System A. For dew point the freeze-point was
converted to dew point, or dew point slightly
above the temperature and has been set to the
temperature.   2 Secondary validation required,
using System B   3 Used only for delta-t and
temperature one aspirator failed. Using the
other system sensor.  
39
Validity Flags (continued)

• Using System A Data. Validation exceed criteria
  because 
• Both System A and B wind directions were
  blowing through the tower.
•  
• Secondary validation detected direction change
  with height greater than 30 degrees.
•  
• Wind speed below light wind limit or wind
  speed less than predetermined criteria.
•  
• Delta-t differences occurred during
  sunrise/sunset

40
Validity Flags (continued)
5/6 No Validation. Problem detected with System
B/A sensor (turned off or problem with
time/date stamp or reading data logger file)
using System A/B 7 Ambient Temperature/Delta-T
--Both aspirators off, results could be
affected Dew point --possible stuck sensor
(same reading for 5 readings) Precipitation
--Difference between temperature and dew point
greater than 10 ?F. Wind Speed --One sensor at
same level is stuck (same reading for 13
readings) Pressure --possible stuck sensor
(same reading for 5 readings).
41
Validity Flags (continued)
8 Failed all validation checks. System A values
passed if possible.   Dew point exceeded
temperature by greater than allowable criteria.
Dew point reset to temperature.   Wind Speed
--Both sensors at same level are stuck (same
reading for 13 readings)   9 No data obtained
from either data logger or all similar sensors on
same level turned off
42
Validity Flags Summary
43
Validity Flags Summary
0-3 Good data, best of both Systems A and B
44
Validity Flags Summary
0-3 Good data, best of both Systems A and
B 4-6 Requires closer review because system
validation was limited or non-existent  
45
Validity Flags Summary
0-3 Good data, best of both Systems A and
B 4-6 Requires closer review because system
validation was limited or non-existent   7-8 Req
uires intense scrutiny because data failed system
validation
46
Validity Flags Summary
0-3 Good data, best of both Systems A and
B 4-6 Requires closer review because system
validation was limited or non-existent   7-8 Req
uires intense scrutiny because data failed system
validation 9 Bad or missing data
47
PNPP Hourly Data

• 00100418 3.8 12. 35.9 6.1 18. 16.5-0.8 59.0
  53.829.350.00 00010000000
• 00100419 4.2 52. 14.1 6.7 45. 10.7-0.6 58.8
  53.429.350.00 00010000000
• 00100420 3.0 72. 9.6 0.6 71. 3.6 0.9 56.7
  52.829.340.00 02022000000
• 00100421 2.3 74. 10.9 0.6 74. 4.2 1.4 56.1
  52.729.350.00 02022000000
• 00100422 1.4117. 37.8 0.6 97. 3.6 1.6 55.5
  52.729.360.00 00021000000
• 00100423 2.6109. 24.2 0.9117. 4.6 2.0 54.7
  52.729.360.00 11020000000
• 00100424 1.8 95. 20.3 0.9119. 2.2 1.9 54.5
  52.529.360.00 21024000000
• 00100501 2.3110. 17.5 1.0125. 4.0 1.8 54.3
  52.629.370.00 11020000000
• 00100502 4.0139. 14.2 0.8146. 4.1 0.5 55.6
  52.929.380.00 00020000000
• 00100503 2.5 92. 12.4 0.9122. 3.4 1.0 55.0
  52.429.370.00 21024000000
• 00100504 2.4 76. 23.1 8.3101. 5.6 1.2 54.3
  52.029.360.00 22011000000
• 00100505 4.1107. 16.5 9.7106. 6.8 0.3 54.7
  51.829.340.01 11011000000

48
PNPP Hourly Data

• 00100418 3.8 12. 35.9 6.1 18. 16.5-0.8 59.0
  53.829.350.00 00010000000
• 00100419 4.2 52. 14.1 6.7 45. 10.7-0.6 58.8
  53.429.350.00 00010000000
• 00100420 3.0 72. 9.6 0.6 71. 3.6 0.9 56.7
  52.829.340.00 02022000000
• 00100421 2.3 74. 10.9 0.6 74. 4.2 1.4 56.1
  52.729.350.00 02022000000
• 00100422 1.4117. 37.8 0.6 97. 3.6 1.6 55.5
  52.729.360.00 00021000000
• 00100423 2.6109. 24.2 0.9117. 4.6 2.0 54.7
  52.729.360.00 11020000000
• 00100424 1.8 95. 20.3 0.9119. 2.2 1.9 54.5
  52.529.360.00 21024000000
• 00100501 2.3110. 17.5 1.0125. 4.0 1.8 54.3
  52.629.370.00 11020000000
• 00100502 4.0139. 14.2 0.8146. 4.1 0.5 55.6
  52.929.380.00 00020000000
• 00100503 2.5 92. 12.4 0.9122. 3.4 1.0 55.0
  52.429.370.00 21024000000
• 00100504 2.4 76. 23.1 8.3101. 5.6 1.2 54.3
  52.029.360.00 22011000000
• 00100505 4.1107. 16.5 9.7106. 6.8 0.3 54.7
  51.829.340.01 11011000000

49
PNPP Hourly Data

• 00100418 3.8 12. 35.9 6.1 18. 16.5-0.8 59.0
  53.829.350.00 00010000000
• 00100419 4.2 52. 14.1 6.7 45. 10.7-0.6 58.8
  53.429.350.00 00010000000
• 00100420 3.0 72. 9.6 0.6 71. 3.6 0.9 56.7
  52.829.340.00 02022000000
• 00100421 2.3 74. 10.9 0.6 74. 4.2 1.4 56.1
  52.729.350.00 02022000000
• 00100422 1.4117. 37.8 0.6 97. 3.6 1.6 55.5
  52.729.360.00 00021000000
• 00100423 2.6109. 24.2 0.9117. 4.6 2.0 54.7
  52.729.360.00 11020000000
• 00100424 1.8 95. 20.3 0.9119. 2.2 1.9 54.5
  52.529.360.00 21024000000
• 00100501 2.3110. 17.5 1.0125. 4.0 1.8 54.3
  52.629.370.00 11020000000
• 00100502 4.0139. 14.2 0.8146. 4.1 0.5 55.6
  52.929.380.00 00020000000
• 00100503 2.5 92. 12.4 0.9122. 3.4 1.0 55.0
  52.429.370.00 21024000000
• 00100504 2.4 76. 23.1 8.3101. 5.6 1.2 54.3
  52.029.360.00 22011000000
• 00100505 4.1107. 16.5 9.7106. 6.8 0.3 54.7
  51.829.340.01 11011000000

50
PNPP System Performance
51
PNPP System Performance

• Data recovery consistently 95-100 percent

52
PNPP System Performance

• Data recovery consistently 95-100 percent
• Manual data replacement reduced by 200 labor
  hours (1 person-month) in 2001 alone

53
PNPP System Performance

• Data recovery consistently 95-100 percent
• Manual data replacement reduced by 200 labor
  hours (1 person-month) in 2001 alone
• IC annual work order requests reduced 60 percent
  (28 to 12)

54
PNPP System Performance

• Data recovery consistently 95-100 percent
• Manual data replacement reduced by 200 labor
  hours (1 person-month) in 2001 alone
• IC annual work order requests reduced 60 percent
  (28 to 12)
• Capital equipment inventory/tracking reduced

55
PNPP System Performance

• Data recovery consistently 95-100 percent
• Manual data replacement reduced by 200 labor
  hours (1 person-month) in 2001 alone
• IC annual work order requests reduced 60 percent
  (28 to 12)
• Capital equipment inventory/tracking reduced
• Validation software has identified every sensor
  /electronic problem since October 1999

56
Summary

57
Summary

• Meteorological monitoring system that
• validates data without elimination

58
Summary

• Meteorological monitoring system that
• validates data without elimination
• uses onsite conditions and climatology

59
Summary

• Meteorological monitoring system that
• validates data without elimination
• uses onsite conditions and climatology
• filters out normal meteorological variances from
  validation

60
Summary

• Meteorological monitoring system that
• validates data without elimination
• uses onsite conditions and climatology
• filters out normal meteorological variances from
  validation
• provides early notification to reviewer of
  potential problems

61
Summary

• Meteorological monitoring system that
• validates data without elimination
• uses onsite conditions and climatology
• filters out normal meteorological variances from
  validation
• provides early notification to reviewer of
  potential problems
• reduces Control Room interference/anxiety

62
Summary (continued)

• PNPP realized cost savings in
• less labor hours for data message/ replacement,
  IC maintenance

63
Summary (continued)

• PNPP realized cost savings in
• less labor hours for data message/ replacement,
  IC maintenance
• reduced capitol equipment/supplies

64
Summary (continued)

• PNPP realized cost savings in
• less labor hours for data message/ replacement,
  IC maintenance
• reduced capitol equipment/supplies
• 40 percent reduction in sensor refurbishment

65
Summary (continued)

• PNPP realized cost savings in
• less labor hours for data message/ replacement,
  IC maintenance
• reduced capitol equipment/supplies
• 40 percent reduction in sensor refurbishment
• PNPP has estimated that the system will
  nearly pay for itself within the first 3 years.

66
Summary (continued)

• PNPP realized cost savings in
• less labor hours for data message/ replacement,
  IC maintenance
• reduced capitol equipment/supplies
• 40 percent reduction in sensor refurbishment
• PNPP has estimated that the system will nearly
  pay for itself within the first 3 years.