ML061000522

Meteorological Tower Monitoring and Data Control Procedure Number 36030-C Rev. 17

ML061000522
Person / Time
Site:	Vogtle
Issue date:	12/09/2005
From:	Sundaram S Southern Nuclear Operating Co
To:	Office of Nuclear Reactor Regulation
References
36030-C Rev. 17
Download: ML061000522 (22)

Text

Approved By , , I I I , I ectric ene t I I 0 i Procedure Number Rev Shan Sunda]a Vo:X0gtle Elecric Grenerafing Plant .:~;- 11 36030-C' 17 Date Approved METEOROLOGICAL TOWER MONITORING AND DATA CONTROL Page Number 12/09/2005 I I tof 23 METEOROLOGICAL TOWER MONITORING AND DATA CONTROL PROCEDURE USAGE REQUIREMENTS- SECTIONS Continuous Use: Procedure must be open and readily available at the work NONE location. Follow procedure step by step unless otherwise directed.

Reference Use: Procedure or applicable section(s) available at the work ALL location for ready reference by person performing steps.

n on Use: Available on plant site for reference as needed. NONE Printed March 17, 2006 at 7:44

Approved By  :- Procedure Number Rev Shan Sundaram :Vogle Electric Generating Plant -  : 36030-C 17 Date Approved METEOROLOGICAL TOWER MONITORING AND DATA CONTROL Page Numbtxr 12/09/2005 I2 of 23 REFERENCE USE 1.0 PURPOSE This procedure delineates the requirements for monitoring equipment operation at the Meteorological Data Collection Center (MDCC). Technical Specification Channel Check Surveillance on the MDCC is the responsibility of the Operations Department.

2.0 APPLICABILITY This procedure applies to the main and backup meteorological towers at Plant Vogtle.

3.0 DESCRIPTION

3.1 The Meteorological Tower Surveillance includes both the main, 60 meters (m) tall tower, and the backup, 45 meters tall tower. The building houses the strip charts and computer system which stores data for wind speed and wind direction at 60 m and 10 m on the main tower and 10 m on the backup tower. It also includes ambient temperature at 10 m on both the main and backup towers, delta temperature between 10 - 60 m on the main tower, dew point temperature at 10 m, and precipitation on the Met Tower rain gauge funnel.

3.2 Data is recorded on Yokogawa Daqstation DX100 electronic data recorders; operation of the Daqstation DX100's can be performed using User's Manual 1X5AG20-2COOO, Yokogawa manual IM 04LOlAO1-O1E.

3.2.1 Material

a. PCMCIA PC Card Stock # 82228

b. Card Reader Stock # 82229

c. Kingston USB 2.0 PC Card 3.3 Data is stored and can be reviewed using the integrated plant computer, IPC.

3.4 Data is also stored on a personal computer stationed at the Met Tower running the software application PC-Midas. PC-Midas was supplied and is supported by ABS Consulting.

3.5 Data is transferred from the PC-Midas computer to a client application, Midas-NU.

Midas-NU is a software application supplied and supported by ABS Consulting and may be used to store the meteorological data for review, editing and report generation.

Printed March 17, 20)6 at 7:44

Approved By f .Procedure Number Rev Shan Sundai-am . V 'ogiie Electric Generating Plant i 36030-C 17 Date Approved METEOROLOGICAL TOWER MONITORING AND DATA CONTROL Page Number 12/09/2005 :3 of 23 3.6 Semi-Annual Calibration of Met Tower instruments is done per I & C Procedures.

4.0 PROCEDURE 4.1 DAILY CHECKS NOTE Daily rainfall reading should be obtained on Monday through Friday and are not required on weekends and holidays.

4.1.1 Obtain rainfall reading from the plastic rainfall cup located near the gate to the Met Tower. Record indicated rainfall on a tickler card, and then empty the rainfall collection cup; this data is used as a comparison of the system rainfall gauge and can be discarded once data has been compared.

4.2 WEEKLY HARDWARE CHECKS 4.2.1 The following activities should be performed weekly, and documented on Data Sheet 1:

NOTES

1) Notify Laboratory Supervision immediately of any unsatisfactory conditions found during the performance of this check.

2) Time at the MDCC is recorded from the Eastern Time Zone I.E.EST (Eastern Standard Time) for winter months and EDT (Eastern Daylight Time) for summer months.

4.2.2 Note the time of day (24-hour clock) that you arrived at the MDCC. There is a clock located on the wall that can be used if necessary.

4.2.3 Establish visually that the primary and backup tower guy wires and all tower instruments are secure.

NOTE Deviations from these conditions can only be expected during calm or sub-threshold winds.

4.2.4 Establish visually that all anemometer cups on both towers are turning, and the wind direction vanes are responsive to the present wind fluctuations.

Printed March 17, 2C06 at 7:44

Approved By Electric - Ge Pl t A ta Procedure Number Rev Shan Sundauam Ioge enaigran 36030-C 17 Date Approved METEOROLOGICAL TOWER MONITORING AND DATA CONTROL Page Number 12/09/2005 I4of 23 NOTE Deviations from these conditions can only be expected during extremely light/variable or calm winds.

4.2.5 Establish visually that the wind direction vanes on both towers are all aligned in the same approximate direction.

4.2.6 Establish that the Met Tower rain gauge funnel is free from debris.

a. Remove the Met Tower rain gauge funnel being careful not to break the heating element power wires which are connected to the bottom of the funnel.

b. Clear debris from the tipping buckets with without tipping. If bucket is tipped during this procedure, reset pen to record on zero scale.

c. Document this maintenance occurrence on Data sheet 1.

d. If bucket tipping occurs, notify the Chemistry Met Tower specialist so the tipping can be deleted from the Midas data file.

4.2.7 Visually inspect the area within 150 yards of both towers and verify no obstructions (i.e.

trees, buildings, large objects, etc.) have been introduced into the area that could cause channeling or unrepresentative aerodynamic effects on the wind field which in some way could affect the validity of the met tower data.

4.2.8 Establish that the aspirator motors are all operational by noting that all aspirator indicator lights in the MEB are lit. The Indicator lights should be green on the Mode control switch on the IND lights panel. If not green, write a condition report.

4.2.9 Verify proper operation of the YOKOGAWA DAQSTATION DX 100 recorders.

For each recorder:

a. Display historical data; Attachment 1 may be used as a guide.

b. Establish that the tracing pens of all the recorders are properly tracing and recording fluctuations in wind speed, wind direction, sigma theta, precipitation, dew point temperature and temperature difference, and ensure that they are providing a clearly legible trace. When any pen trace becomes unreadable, initiate a CR to request I&C repair this condition.

Printed March 17, 2006 at 7:44

NOTE The MET tower time is to be set on eastern time zone year round.

The clock should be set to EST in winter months and EDT in summer months.

c. Check the DX100 recorder clock to verify the system is operating on the correct local time. If clock is incorrect by more than a few minutes, make the necessary adjustments. All recording systems shall be correct to actual Eastern Time Zone

+5 minutes. Attachment 2 details how to change the date and time displays.

d. Verify that current chart recorder data coincides with PC-MIDAS computer information. This verification should include delta temperature, 10m temperature, dew point, wind speed and wind direction. If any data from MIDAS does not reasonably coincide with chart recorder data, record this discrepancy in the Data Sheet 2 Remarks section and initiate a condition report as appropriate.

4.3 METEOROLOGICAL DATA ACCURACY CHECKS The following activities should be performed weekly, and documented on Data Sheet 2.

NOTE Notify Laboratory Supervision immediately of any unsatisfactory conditions found during the performance of this check.

4.3.1 Establish that the wind sensors are all recording similar wind speed and wind direction values (except for extremely light or calm wvind conditions).

a. The primary and secondary wind speed and wind direction values at the same elevations, should agree within +/-2 mph, and +/-150 azimuth, respectively.

b. Wind speed usually increases with height. Mean wind speeds at 60-m level are unlikely to be less than those at 10 m. Acceptable speed differences between the upper and lower levels range from about 1-6 mph.

c. Mean wind direction between the lower and upper level sensors can also be expected to vary somewhat with height. In most cases, wind direction will be shifting clockwise as sensor height increases. Direction changes between lower and upper level sensors normally should be no greater than about 20 degrees azimuth (except during calm conditions).

Printed March 17, 2C 06 at 7:44

Approved By i . Procedure Ntumber Rev Shan Sundaram Vogte Electric Plant.

ieneratng 36030-c 17 Date Approved METEOROLOGICAL TOWER MONITORING AND DATA CONTROL Page Number 12/09/2005 6 of 23 4.3.2 Establish that the wind speed traces do not contain anomalies. Refer to the windspeed trace examples of normal, damped, high threshold, and spiking windspeed traces in Figures 1, 2, and 3. Anomalies shall be noted and a CR initiated, if necessary.

4.3.3 Establish that the wind direction traces do not contain anomalies. Refer to the wind direction chart examples of normal, damped, square cornered, spiking, and switching traces in Figures 4, 5, 6, 7, and 8. Anomalies shall be noted and a Condition Report initiated, if necessary.

4.3.4 Establish that the temperature traces indicate a proper response to normal diurnal changes of temperature. Temperatures generally increase during the day and decrease during the night, except during cloudy periods, or during instances of nighttime warm frontal passages. During most cloudy days, the temperature does not vary much between day and night. See Figure 10 for an example.

4.3.5 Establish that the temperature values recorded on both the primary and back-up tower secondary temperature systems agree within +/-40 F.

4.3.6 Establish that the delta temperature trace indicates a proper response to normal diurnal changes. It is generally positive during nighttime hours (especially when skies are clear and winds are light) and negative during daytime hours (especially between about 10:00 a.m. and 4:00 p.m. on sunny days). See Figure 9 for an example.

4.3.7 Establish that the delta temperature trace does not go below the autoconvective lapse rate of -3.1 0 F. This lapse rate represents the minimum delta-T value the atmosphere, can support without overturning. Readings below this limit are indicative of faulty temperature probes. The delta-T value should not go above 15'F during the day time hours (10:00 am4:00 pm). A value above 15'F may indicate an aspirator problem.

4.3.8 Establish that the 10-m dew point temperature is less than or equal to the 10-m temperature. When the dew point temperature is equal to the temperature, relative humidity is 100 percent and outside conditions should be cloudy and/or foggy. The dew point temperature cannot exceed the temperature if the instruments are properly operating. The dew point temperature should be within 300 of the 1im-temperature (i.e.

lOm T- lOm DP < 300).

4.3.9 Establish that the temperature, delta temperature, and dew point temperature traces do not exhibit high frequency fluctuations. These parameters are expected to vary slowly over small time increments.

4.3.10 If any wind speed and/or wind direction and/or air temperature delta T instrument on the primary met tower is inoperable, initiate a condition report and notify the Shift Superintendent immediately that instrumentation required by Technical Requirements Manual 13.3.3 is OOS. The above channels are required to be operable at all times.

Printed March 17, 2(006 at 7:44

Approved By e . -Procedure Nimber Rev Shan Sundaram I -:- VoguleElectric Generating Plant = i 36030-C 17 Date Approved METEOROLOGICAL TOWER MONITORING AND DATA CONTROL Page Number 12/09/2005 I7 of 23 NOTE Operations Department is responsible for apprising the Chemistry Department of failed MDCC Channel Checks.

If any of the above channels are inoperable for greater than 7 days a special report must be prepared and submitted to the NRC within the next 10 days outlining the cause of the malfunction and the plans for restoring the channel(s) to operable status per Procedure 00152-C, "Federal And State Reporting". Coordinate this reporting with the Regulatory Compliance Department.

4.3.11 Complete Data Sheet 2.

5.0 DATA EVALUATION 5.1 METEOROLOGICAL DATA MONITORING 5.1.2 The Nuclear Specialist is responsible for meteorological data monitoring. He/she shall average the wind, temperature and humidity data over a period of at least 15 minutes for each hour.

5.1.3 The basic reduced data is compiled into monthly or seasonal and annual joint frequency distributions of wind speed and wind direction by atmosphere stability class.

5.1.4 Data evaluation results are utilized in the assembly of the Annual Radiological Effluent Report. Refer to Procedure 36025-C, "Annual Effluent Release Report Preparation" for details.

5.2 ANNUAL MET TOWER INSPECTION 5.2.1 On an annual basis the met tower is inspected by an outside contractor to verify vertical alignment and guy wire tension.

Printed March 17, 2(06 at 7:44

Approved By , - Procedure Number Rev ShanSundaram tlogle Electric Generating lant  ; I 36030-C 17 Date Approved METEOROLOGICAL TOWER MONITORING AND DATA CONTROL Page Numbec 12/09/2005 I8 of 23

6.0 REFERENCES

6.1 VEGP Technical Requirements Manual Section 13.3.3 6.2 Reg Guide 1.23 "On-Site Meteorological Programs" 6.3 ANSI/ANS/2.3-1984 "Standards for Determining Meteorological Information at Nuclear Power Sites", September, 1984.

6.4 Final Safety Analysis Report, Vogtle Electric Generating Plant, Section 2.3.3, Amendment 17, July 1985 6.5 Meteorological Tower - Auto Data 10/50 Computing, Measuring And Control System -

Operating And Technical Manuals. VEGP Document Control - IX5AG20B-1-0, 1X5AG20B-3-0 6.6 Yokogawa Daqstation DX100 User's Manual; Document Control # lX5AG2O-20000 Vendor # IM 04LOIAO1-OI E 4 th Edition; END OF PROCEDURE TEXT Printed March 17, 2006 at 7:44

Approved By 4 Procedure Number Rev ShanSudaiam iVogtle Electric' G.enerating Plant ~300C 1 Date Approved METEOROLOGICAL TOWER MONITORING AND DATA CONTROL Page Numbe-12/09/2005 SIof 23 RFERENCE USE ATTACHMENT 1 DISPLAYING HISTORICAL DATA FOR TREND REVIEW 1.0 Depress "DISP/ENTER" below screen containing data point to be reviewed.

2.0 Scroll to "Trend History" using arrow keys.

3.0 Depress "DISP/ENTER".

4.0 Scroll up or down through historical chart recordings using the arrow keys.

5.0 If desired, displayed time increments may be changed by:

a. Depress "DISP/ENTER".

b. Scroll to "Trend History" using arrow keys.

c. Depress right arrow key to reveal option window.

d. Scroll to "zoom +" to narrow the range or "zoom -" to widen range.

e. Depress "DISP/ENTER".

6.0 Return screen to active trend display by:

a. Depress "DISP/ENTER".

b. Scroll to "Trend"

c. Depress "DISP/ENTER".

Printed March 17, 2(06 at 7:44

Approved By I . Procedure Number Rev Shan Sundar.am - ;; I Vogtle Electric Generating Plant 0  : 36030-C 17 Date Approved METEOROLOGICAL TOWER MONITORING AND DATA CONTROL Page Number 112/09/2005 10 of 23 REFERENCE USE ATTACHMENT 2 CHANGING DATE / TIME SETTINGS 1.0 Open small cover plate below recorder to be updated.

2.0 Depress "MENU" button.

NOTE The five grey buttons below the display screen will roughly lineup with corresponding options that will appear on the screen above them.

3.0 Select "Next".

4.0 Select "#8" 5.0 Select "Input" NOTE Date format is YY/MM/DD (Year / Month / Day) 6.0 Scroll to correct digit to replace highlighted date/time point by using arrow keys.

7.0 Depress "DISP/ ENTER" to save number. Display will automatically advance to next date/time point.

8.0 Repeat steps 6 and 7 until all corrections are entered. Read note below.

NOTE The next two steps will need to be completed in such a way as to synchronize the inputted time to the current time. To accomplish this, the minute time point will need to be set a couple of minutes into the future so as to capture it at the correct moment in time.

9.0 When all digits are set, scroll over and down to highlight the "ENT" point.

10.0 Depress "DISP/ ENTER" key twice to set clock to new values selected.

11.0 Depress "ESC" button.

Printed March 17, 2C 06 at 7:44

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/Approvea '3 - Procedure Nu-mer Rev Shan Sundaram I Vogtle Electric Generating Plant I 36030-C 17 Date Approved METEOROLOGICAL TOWER MONITORING AND DATA CONTROL Page Number 12/09/2005 _ 1 11 of 23 Sheet 1 of 2 DA7 A SHMEE i WEEKLY CHECKS METEOROLOGICAL DATA COLLECTION CENTER PLANT VOGTLE Immediately Notify Laboratory Supervision of any unsatisfactory condition found Item Activity Procedure Initials Comments No. Para. #

1 Enter arrival time (24-hour clock). (4.2.2) 2 Have guy wires been visually inspected? (Initial if OK) (4.2.3) 3 Are anemometer cups turning? (Initial if OK or NW = No Wind) (4.2.4) 4 Are wind vanes responsive? (Initial if OK or NW = No Wind) (4.2.4) 5 Are wind vanes aligned in the same approximate direction? (Initial if OK or (4.2.5)

NW = No Wind) 6 Is rain gauge free of debris? (Initial if OK) (4.2.6) 7 Have any obstructions been introduced within 150 yards of tower that (4.2.7) might affect Met. Tower data? (Initial if OK) 8 Are all aspirators operational? (Initial if OK) (4.2.8)

Comments:

Prnted March 17, 2006 at 7:44

C C-Approved By j ProcedureNumber Shan Sundaram I Vogtle Electric Generating Plant A  :~ 36030-C Rev 17 Date Approved METEOROLOGICAL TOWER MONITORING AND DATA CONTROL Page Number 12/09/2005 I- 1 12 of 23 Sheet 2 of 2 UATIA SHEET 1 cont'd WEEKLY CHECKS METEOROLOGICAL DATA COLLECTION CENTER PLANT VOGTLE DAQSTATION RECORDER OPERATIONAL CHECKS Item Proc. lOM 60 M lOM 60M lOM lOM 60 to 10 M Dew Rain Para. # Wind Wind Wind Wind Sigma Temp Delta T Point No. Speedi Speed Direction Direction Theta 9 Are chart traces properly recording 4.2.9 b fluctuations?

(Yes - No) 10 Are the chart traces legible? (Yes - No) 4.2.9 b 1 Is the Time setting on all recorders within 4.2.9 c

+/- 5 minutes of actual Eastern Time Zone (Yes - No) 12 Docs DAQSTATION data reasonably 4.2.9 d agree with PC-MIDAS data? . -

Item Proc. 11OM 1OM 1OM 1OM No . Para. # Backup Wind Backup Backup Backup Wind Sigma Temp Speed Direction Theta 13 Are chart traces properly recording 4.2.9 b fluctuations?

(Yes- No) 14 Are the chart traces legible? (Yes - No) 4.2.9 b 15 Is the Time setting on all recorders within 4.2.9 c

+ 5 minutes of actual Eastern Time Zone (Yes - No) 16 Does DAQSTATION data reasonably 4.2.9 d agree with PC-MIDAS data? .

Performed By: Date: / I Reviewed By: Date:_ _ I Printed March 17. 2006 at 7:44

V UCAr I ProcedureNumber Rev Shan SundararBI Vogtle Electric Generating Plant A 0 --- 36030-C 17 Date Approved METEOROLOGICAL TOWER MONITORING AND DATA CONTROL Page Number 12/09/2005 L 1 13 of 23 Sheet 1 of 1 DATA SHEET 2 WEEKLY DATA COMPARISON CHECKS METEOROLOGICAL DATA COLLECTION CENTER PLANT VOGTLE Item Activity Procedure Initials Comments No. Para. # Yes/No 1 Do primary and back-up tower wind speed differences at 10-m amount to more 4.3.1 a than 2 mph? (YES or NO) 2 Do Primary and back-up wind direction differences at 1O-m amount to more than 4.3.1 a 15 degrees azimuth? (Yes - No) If YES, Log Values 3 Is 60-m wind speed greater than 10-m wind speed? (YES or NO, If NO log both 4.3.1 b wind speed values) 4 Is 60-m wind direction azimuth similar (+20) to 10-m wind direction azimuth? 4.3.1 c (Initial if OK) 5 Is there evidence of an anomalous trace on wind speed and wind direction charts? 4.3.2 /

(Yes- No) 4.3.3 6 Are temperature ranges over the last 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> reflective of normal diurnal 4.3.4 changes? (Yes - No) 7 Do primary and back-up tower temperatures at the same level agree within 40 F? 4.3.5 (Yes - No) 8 Are delta temperature ranges over the last 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> reflective of normal diurnal 4.3.6 changes? (Yes - No) 9 Is the primary tower delta temperature reading above the autoconvective lapse rate 4.3.7 of -3.1OF and/or is the delta temperature below 15'F? (Yes - No) 10 Is 1O-m dew point temperature less than or equal to 1O-m temperature for either 4.3.8 tower? (and is it within 300F of the 1Om temp? Yes - No) If NO log both values. .

11 Establish that the temperature, delta temperature, and dew point temperature 4.3.9 traces do not exhibit high frequency fluctuations. These parameters are expected to vary slowly over small time increments. .

Performed By: Date: / /

Reviewed By: Date: / I Printed March 17, 2006 at 7:44

Approved By P Number Rev Shan SundaraM Vogtle Electric Generating PlatI 36030-C 17 12/09/2005 1METEOROLOGICAL 2/0 9 2 0 0 51 TOWER MONITORING AND DATA CONTROL Page Number 4 of 2 3

_A Wind Speed-Spiking or High Threshold (Possible Sticking Bearings)

FIGURE 1 Printed March 17, 2006 at 7:44

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FIGURE 5 Printed March 17, 2006 at 7:44

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FIGURE 6 Printed March 17, 2006 at 7:44

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136030-C 17 12/09/2005 1 METEOROLOGICAL TOWER MONITORING AND DATA CONTROL e 21 of 23 Wind Direction-Normal FIGURE 8 Printed March 17, 2006 at 7:44

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Date Approved METEOROLOGICAL TOWER MONITORING AND DATA CONTROL Page Number 12/09/2005 22 of 23 7 TYICAL DIURNAL LTA TEMERATURE CYCLE 7

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SUNSET Typical Diurnal Temperature Cycle FIGURE 9 Prnted March 17, 2006 at 7:44