ML17278A429

Rev 1 to Operating & Engineering Test Procedure 8.2.92, UHS Performance

ML17278A429
Person / Time
Site:	Columbia
Issue date:	03/20/1985
From:	Martin J WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To:
Shared Package
ML17278A427	List: GO2-85-649, Forwards Washington Nuclear Plant Unit 2 Spray Pond Drift Loss Rept, Per License Condition 2.C.(6) Re Uhs.License Condition 2.C.(6) Satisfied.Rev 1 to Operating & Engineering Test Procedure 8.2.92, UHS Performance, Also Encl ML17278A428 ML17278A429
References
8.2.92, TAC-57281, NUDOCS 8510090187
Download: ML17278A429 (46)

Text

APPENDIX C Test Procedure 8510090187 880927 ADO'SOOO397 P

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WASHINGTONPUBLIC POWER SUPPLY SYSTHC PLANTPROCEDURES MANUAL WNP-2 PROCEDURE NUMSKR

%8.2.92 VOI UMKNAME APPR KD OATK 03/20/85 SECTION 8.2 Tl

+8.2. 92 OPERATING ANO NEERING TEST FROCEOURES POWER ASCENSION TEST PROCRAM ULTIMATE FEAT SIN PERFCRMANCE 8.2. 92.l

~zeaee It is the objective of'he Ultimate Heat Sink (UHS) performance test to determine the dxif't loss characteristics of'he spray ponds.

This con-firtratory drif't loss testing has been committed to the NC to verify the consexvatism of the upper bomd drift loss used in FSAR Saf'ety Analyses (9.2.5).

The UHS must contain a 30-day supply of'ater without makeup.

8.2. 92. 2 Oiscussion Orift loss characteristics are determined by masuring total water loss directly, spray evaporation indirectly, and by calculating surf'ace evaporation.

'Leakage's determined fran'otal water loss measurements without spraying by sNtracting surface 'evaporative losses.

The testing is performed during relatively high winds (average greater than 6 mph) since drif't losses then become an important water loss mechanism.

Pond level measurements are taken with hook gauoes to determine total

- water loss, and spray evaporation is determined by measuring the cooling range of" the sprays and calculating evaporation free the range and flow rate.

Surf'ace evaporation is calculated from the meteorological and surf'ace temperature data.-

The results of this test are expressed as drif't loss as a function of'ind speed.

If the results remain below the upper bound value used in the FSPR saf'ety analysis, no additional analyses will be required.

If the new data shows d"if't losses greater than the previous upper bound, further safety evaluation analyses will be required to determine the impact on UHS capability to meet fmctional criteria (30-day water supply xequi rement).

PROCEDURE NUMBER 8.2. 92 REVISION NUMBER 1

PAQK NUMBER 8.2.92-1 of 18 WP St7 RZ {t&t)

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SAFKYY RKL.YKQ 8.2.92.3 Acce ance Criteria CMYRQLLKQ CQPY A.

Level 1 Not Applicable B.

Level 2 Drift loss at the design wind speed of'.91 mph (RMS average over 30 days for worst water loss meteorology) is Ress than or equal to 1.02K of'pray flow rate.

8.2. 92. 4 Ref'erences A.

B.

Regulatory Guide 1.27 FSAR Section 9.2.5 C.

WNP-2 Safety Evaluation Report Section 2.4.5 D.

1979 Ultimate Heat Sink Spray System Test Results

Report, WFPSS-EN-81-01 E.

WNP-2 Spray Pond Drift Loss Test Plan F.

Plant Operating Procedure PFM 2.4.5, Standby Service Water System 8.2.92.5 Materials Tools Test E

nt and Tem orar Installations A.

Two Weather Measure meteorology stations, or equivalent:

I 1.

Cup anemometer (Model W103-3SS), with signal conditioning module MD103~.

Accuracy. to be greater of' 0.15 mph or lX.

2.

Vane (Model W104-2), with signal conditioning module MD104-540.

Threshold 0.75 mph or less, and resolution 0.72 degree or less.

3.

Wet and dry bulb temperature unit (Model R020-10).

Accuracy

+ 0.54C.

B.

4.

Power Supply Module MD910 5.

Anemometers and wind vanes to be not more than 15 feet above the ground.

Fifty-six (56) catch pans nominally three feet in diameter, with one 2 inch inside diameter drain pipe at apex of'an.

Each catch pan to be put inside an inf'lated automotive tire innertube for f'loatation.

A thermocouple will be attached to each catch pan to measure water temperature as it leaves the catch pan.

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D.

E.

Hook gauge and stilling well, accuracy to 0.001 foot.

One required f'r each pond.

Data logger (Doric Hocfel 220-100.04 or equivalent) with 100 channel capability and loop temperature resolution of' 0.5'F, sampling speed two channels/second.

The data logger wiTl record the tempera-

'tures measured by the thermocouples.

Strip chart recorder suitable f'r continuous recording of'ind speed and direction data.

Surface temperature oaasurement thertmcouples neunted in an inner-tube or other suitable f'loatation device with thermocouple tip at least 3" but not more than 9" deep in water.

Ten required (see Figure 1).

4 Discharge water temperature neasurement theraacouples (2) to be installed down stream of'alve SW-V-170B.

NOTE:

Znstrunentation locations to be as shown in Figure 11.1.

8.2. 92. 6 Precautions and/or Limitations A.

B.

Standby Service Water System operation is to be in compliance with plant operating procedure PFM 2.4.5.

Testing is not to be conducted during periods of'recipitation.

8;2.92.7 Prere uisites A.

Loop B of the Standby Serv'ice Wate'r System is available to support this test.

B.

Wind speed is averaging above 6 mph's estimated f'rom brush recorder.

C.

D.

An approved plant operating procedure exists and is used f'r opera-tion of'he Standby Service Water System.

This test procedure is that revision currently approved f'r UHS per- '

formance testing.

Shift Manager's approval f'r testing has been obtained on Table 11.1.

F.

The test acceptance criteria have been reviewed by the test engineer.

G.

H.

Precautions and/or limitations have been reviewed and are understood by the test engineer.

All necessary temporary installation has been installed, and instru-ment calibration due dates are appropriate f'r the duration of this test (up to 30 days).

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SAFKTY RKILYK9 CNYRQLLK9 CGPY 3.

Surface Eva ration Surface evaporation is calculated from mteorological data and pond surface water temperature, using methods from Reference 8.2.92.4. 4:

~es

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(2)

Where:

s=

Rate of water loss from pond due to surface evapora-tion 5 gpm Density of water at pond surface temperature, 1bm/ft>

hfg =

Heat of vaporization of water at pond surface water temperature, Btu/ibm Qes

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Rate of heat transfer from pond due to surface evaporation, Btu/ft2 - day ea

=

(ea - ea)

(70 +~

<<'7Q Saturated vapor pressure at the water surface temper-

ature, oeHg Air vapor pressure,'mnHg Wind velocity, mph Equation two is integrated step wise over the period of the testing to determine the water loss due to surface evaporation.

4.

~ea~acee Leakage is determined just prior to this test by observing pond level changes over a period of several days.

Pond level mea-surements taken with hook gauges are used to determine the leakage rate at full pond level.

This rate is then used with test duration to determine leakage rate durina the testing period.

PROCEDURE NVMSER 8.2. 92 WP 550 RI {5%0)

REVISION NVMSER PaaE NVMIIER 8.2.92-6 of 18

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Drift Loss Verses Wind eed:---;=-.--

The data taken is reviewed to identif'y time periods when wind speed is relatively constant.

For these periods the total

loss, spray evaporation, surf'ace evaporation and leakage are-determined.and drift loss calculated.

This is done for as many, time periods as are available, and each calculation provides one point on the drift loss verses wind speed plot.

An upper bomd is determined free the 'data and compared to the drift loss data used in the FSN Saf'ety Analysis.

The safety analys-is will be repeated if the new drift loss data results in higher design basis drift loss values at the design wind speed (1.02X of f'low at 6e9 mph).

B.

Documentation The test results will be evaluated and reported to the NC in an FSN Amendment.

An Internal Report will be prepared which provides details of the data reduction and calculations perforned.

8.2.92.11 Attachments A.

Data Sheets 1.

11.1, Spray Pond Level 2.

11.2, Spray Pattern B.

Tables l.

Il.l, Test Authorization 2.

11.2, Acceptance Criteria Verification 11.3, Precautions and/or Limitations Verification 4.

11.4, Prerequisites Verification C.

~iciur as 11.1, Instrumentation Location D.

Tests 11.1, Spray Pond Leak Test PROCEDURE NUMBER 8.2.92 WP $01 RI ('$&S)

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Due Date Data Point Date Time 1 Readina (In)

Readin (In)

Data Sheet ll.l PROCEDURE NUMBER 8.2. 92 WPi$90 Rl {9%3)

REVISION NVMSKR PAGE NUMSKR 8.2.92-8 of 18

SAFKTY RKL TKG TRQLLKQ CQPY SFRAY PATTERN Data Point DATE Service Water Flow Rate (SW-FI-9B)

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SAFETY RKl YK9 C~YRLLEW CQPY SFRAY FOhO LEAK TEST

1. 0 cirrose The purpose of'this testing is to determine the leakage rate from the spray ponds to support the ultimate heat sink drift loss test.

2.0 Test Eauirment A.

Weather neasure meteorology station or equivalent.

. 1.

Cup anemometer to measure wind velocity.

2.

Vane to masure wind direction.

3.

Wet and dry bulb temperature mit.

B.

Ten thermcouples to erasure pond surf'ace.

C.

Hook gages to measure pond level changes.

D.

Stilling wells for hook gages.

E.

Data logger to accept thermocouple input.

3. 0 Prereouisites A.

Verify Spray Ponds are at normal operating level per PFM 2.4.5.

B.

Shift Managers concurrence obtained for performing test.

C.

All instrunentation has been calibrated and installed as shown in Figure 11.2.

D.

EMU makup is isolated (EMU-V-lOA and 'NU-V-lCB).

4. 0 Procedure A.

Record the data on Data Sheet 11.3, daily, f'r a period of seven days.

NOTE:

Record any conditions that may af'feet data such as operation of'ervice water system, rain fall, etc.

B.

Notify Shift Hanager at completion of'esting so system can be returned to normal standby condition.

Test 11.1 Page 1 of 4 PROCEDURE NUMSKR 8.2. 92 WP Stl RI {SWQ)

RCVISION NUMSKR PAQC NUMSKR 8.2.92-15 of 18

5.0

~Anal sis The leakage rate will be determined by taking total volvo loss and subtracting the loss due to surf'ace evaporation.

Surf'ace evaporation is calculated fran neteorological conditions and surface temperature.

6. 0 Attachments A.

Oata Sheet lla3 8.

Figure 11.2 Test 11.1 Page 2 of' PROCEOURE NUMBER 8.2.92 WP~$ 99 RI {9WQ)

REVISION NUMBER PACIE NUMBER 8.2.92-16 of 18

SAN'fY RSL TR9 CM'mLLKG CCPY Data Sheet 11.3 LENAGE LEVEL DATA DATE TIME 8-POhO HOOK GUACE NO'tE:

Record any conditions which may affect leakage data, e.g.,

system operation, rain fa11, etc.

Test 11.1 Page 3 of 4 PROCEOURK NUMBER 8.2. 92 WP 590 RI {9&3)

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