ML20071Q403

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Rev 8 to FNP-0-STP-125, Svc Water Bond Seepage Test
ML20071Q403
Person / Time
Site: Farley  Southern Nuclear icon.png
Issue date: 01/06/1993
From:
SOUTHERN NUCLEAR OPERATING CO.
To:
Shared Package
ML20071P955 List:
References
FNP--STP-125, FNP-0-STP-125, NUDOCS 9408110204
Download: ML20071Q403 (26)
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Text

{{#Wiki_filter:L,_ .e. -s 1.1 - s.- FNP-0-STP-125 January 6, 1993 7 Revision 8 FARLEY NUCLEAR PLANT SURVEILLANCE TEST PROCEDURE i FNP-0-STP-125' S i A l F E-l T Y

l SERVICE WATER POND SEEPAGE TEST R

E L i A T j E D i 1 Approved: i t n.. Manager-SysteWs Performance l Date Issued: / - /Y-I3 i DEC SP STP-138/2 llNCONTROLLED COPY CAUTION. This Copy is not maintained current Do Not Use in Safety Related Activity 9408110204 940729 PDR ADOCK 05000348 F PDR . _ ~, _., _.

? s' mP-OsAP-5 8 FARLEY NUCLEAR PLANT SURVEILIANCE TEST REVIEW SHEET SURVEILLANCE TEST 10. TITLE mP-0-STP-125 Service Water Pond Seepage Test TECHNICAL SPECIFICATION REFERENCE / MODE (S) REQUIRING TKST: 4.7.6.2.4 1,2,3,4 i li.5T RESULTS (To be completed by test supervisor) I SIGNNIURE DATE/IIME (Date/ Time of Last Procedure Sign-off) (ENTER SAME DATE/ TIME IN SURVEILLANCE SCHEDULE) COMPONENT OR TRAIN TESTED (if applicable) {] ENTIRE STP PERFORMED [] PARTIAL STP PERFORMED: [] For Surveillance Credit I () Not for Surveill^nce Credit REASON FOR PARTIAL: TEST COMPLETED: [] Satisfactory [] Unsatisfactory i (] The following deficiencies occurred: [] Corrective action taken or initiated: i SY51m PERrWmnNCE GROUP REVIEW -REVIEWED BY DATE [] Procedure properly coupleted and satisfactory [] Comments: SP STP-138/9 FIGURE 3 Rev. 7

FNP-0-STP-125 LIST OF EFFECTIVE PAGES L PIVISICN NO. PAGE NO. 0 1 2 3 4 5 6 7 8 9 10 1 X X 2 X X 3 X X X X 4 X X X X X 5 X X X X X 6 x X X X i 7 X X X X 8 X X X X X 9 X f MTA SHEET 1 1 X X X X i MTA SHEET 2 1 X X ) 2 X X MTA SHEET 3 1-X i 2 X .j MTA SHEET 4 1 X X X l l DEC SP STP-139/8 Paga -f '

FNP-0-STP-125 i LIST OF EFFECTIVE PAGES \\ l REVISION NO. PAGE NO. 0 1 2 3 4 5 6 7 8 9 10 APPENDIX A A-1 X X A-2 X i A-3 X X FIGURE 1 X FIGURE 2 X FIGURE 3 X FIGURE 4 X M 'yrc DEC SP STP-138/8 Page 2 of 2 w

n, FRP-0-STP-125 FARLEY NUCLEAR PLANT UNITS 1 AND 2 SURVEILLANCE TEST PROCEDURE STP-125 SERVICE WATER POND SEEPAGE TEST j 1.0 Purpose l The objective of.this test is to demonstrate that j seepage from the Service Water Pond does not exceed the rate specified in the Technical Specifications. 2.0 Acceptance Criteria The maximum, demonstrated seepage rate from the pond shall not exceed 15 cfs under the following j prevailing conditions: 2.1 No water is pumped into the pond during the test period. l 2.2 The measured rainfall has not exceeded the 1 maximum allowable rate of 0.1 inch per hour at any time during the test nor during the twelve (12) hours immediately preceeding the test. 2.3 In the judgment of the Test Supervisor no significant rainfall event occurred within the entire drainage basin. 3.0 References 3.1 FSAR, Section 2.4.8.1. 3.2 FSAR, Section 2.4.14.2. 3.3 FSAR, Section 2B.6.7. 3.4 FSAR, Section 9.2. 3.5 Section 4.7.6.2.4, Technical Specifications, Appendix A to License # NPF-2. 3.6 A-181001, Service Water System FSD. -' 3. 7 D-176980, Storage Pond Dam & Dike General Arrangement 3.8 D-176939, Instrument Installation Data Schedule DEC SP STP-138/2 1 Rev. 8 - I ,,4

e FNP-0-STP-125 3.9 D-170976, Service Water Return to Wet Pit 3.10 D-176982, Storage Pond Dam & Dike Miscellaneous Sections and Details 3.11 Hook Gage, Manufacturers Instruction Manual - Leopold and Stevens Manual, HG-869. 3.12 Rain Gage, Manufacturers Instruction Manual - Belfort Instrument Company, Manuals #8777 and 12049. 3.13 Evaporation Pan Modification and Installation - See Figure 1. 3.14 Liquid Level Recorder, Manuafacturers Instruction Manual - Belfort Instrument Company, Manuals #9909 and 12049. 3.15 Storage volume curve - See Figure 3. 3.16 Liquid Level Recorder Installation - See Figure 2. 3.17 FNP-0-SOP-25.0 - River Water System Operating Procedure. 4.0 Test Equipment 4.1 Four (4) Belfort Portable Liquid Level Recorders, Cat. No. 5-FW-1, complete with spring powered chart drive, 4 inch diameter float, counterweight, 30 ft. of perforated tape, ink, pen and one set (100) charts No. 5-1941-AB. 4.2 One (1) Belfort Universal Recording Rain Gage, Cat. No. 5-780 complete with pen, ink, dash pot fluid, 4 day chart drive movement, and one set (100) charts No. 5-4045-B. 4.3 Two (2) Floating Evaporation Pans per Figure 1. 4.4 Two (2) Belfort Hook Gages, Cat. No. 5-743, graduated in inches, or equal. 4.5 Two (2) Belfort stilling Wells, Cat. No. 5-745 or equal. 4.6 Four (4) Flowmeasuring Systems - One each installed in each of the 42" diameter service water lines. 4.7 Leopold and Stevens - 4 ft. Hook Gage. DEC SP STP-138/2 2 Rev. 8 J

FNP-0-STP-125 5.0 Precautions and Limitations l 5.1 It is desirable to perform the test during a period of no rainfall so that the error induced in the estimation of the volume of water entering the pond via rainfall is minimal. However, since it may be difficult to perform the test without any rainfall, an. allowable rate not to exceed 0.1 inch per hour is acceptable. Furthermore, if~the allowable rate is exceeded, the test must not be i restarted for at least 12 hours after the last recorded rate of 0.1 inch per hour. The Test Supervisor shall monitor the local weather during the test period to visually detect any significant local rainfall event which may occur in the. drainage basin but'not. at the installed rain gage. If, in the opinion.of the Test Supervisor, such an event does occur, the significance of the event may-be determined by examination of the pond level records. A significant rainfall event will be indicated by a change in the slope of the level vs. time charts, indicating that the rainfall rate was large enough for the surface runoff to flow into the pond. At the discretion of the Test Supervisor, all or any portion of the test results may be invalidated and the test rescheduled. 5.2 Do not allow the pond water level to exceed El. 185.5 feet. This limit is necessary to assure that no water passes over the spillway. 5.3 Do not allow the pond water level to drop below El. 184.7 feet. This limit is necessary to assure that the water level.is always kept above the level at which the service water recirculation valves open. 5.4 Sufficient communications equipment must be available for adequate communication between test personnel. 5.5 River Water System l 5.5.1 It is required that no water be pumped into the pond during the test. At the same time, the River Water System and the River Water Flume must remain operational. Maintaining the River Water System operational requires that the River Water System Header pressure j stay at or above 33 PSIG. DEC SP STP-138/2 3 Rev. 8 J

FNP-0-STP-125 5.5.2 All ten river water pumps must be stopped for the test duration. The normal method is to place all SELECTOR switches to the REMOTE position and place all REMOTE-CONTROL-SWITCHES to the OFF position. Any caution (run) tags must be cleared and any maintenance work coordinated to insure no pumps inadvertantely start. Motor heaters may need to be energized, or other items per FNP-0-SOP-25.0 as deemed necessary. The Lube and Cooling must be transfered from the header to the screen wash supply per FNP-0-SOP-25.2. 5.5.3 If either train header pressure drops to 35 PSIG, one River Water Pump is started of that train and run just long enough to refill the header but not long enough to allow river water to run into the pond. This is accomplished by observing the header pressure immediately after shutting off the River Water Pumps. When a single River Water Pump is started to refill the header, shut the pump off as soon as the pressure reaches the level observed earlier. While the pump is on, observe the River Water Discharge Structure to verify that no water is pumped into the pond. If, in the opinion of the Test Supervisor, a significant amount of water is pumped into the pond, the significance of the-event may be deter' mined by the method used in step 5.1. 5.5.4 The Test Supervisor may end the test as of the time of the last reading of the Service Water flow meters and, at his discretion, all or_any portion of the test results may be. invalidated. and, if necessary, the test rescheduled. '-"~ 5.5.5 If desired, as an extra measure to prevent the header pressure-from bleedi,ng off too quickly, if either unit is in cold shutdown or if a pump is out of service for maintenance, put the River Water Pumps that will not be used in LOCAL and close the isolation valve on tne discharge lines of those pumps. DEC SP STP-138/2 4 Rev. 8 Ab

4 4 FNP-0-STP-125 5.6 Obtain Shift Supervisor and Security approval prior to making boat entries in the Service Water Pond. 4 6.0 Prerequisites and Initial Conditions 6.1 The storage volume curve developed for the preoperational test 012-5-006 must be available, Fig. 3. 6.2 Pressure gage NSP25PI583 must be in service on Train A of the River Water Header and pressure gage NSP25PI582 must be in service on Train's of the River Water Header. NSP25PI583 Cal Due Date NSP25PI582 Cal Due Date i Initials / Date-6.3 verify that the service water flow measuring systems are installed and calibrated. Unit 1 Train A Pressure transmitters Serial No. Cal Due Date Unit 1 Train B Pressure transmitters Serial No. Cal. Due Date Unit 2 Train A Pressure transmitters Serial No. Cal. Due Date Unit 2 Train B Pressure transmitters Serial No. j Cal. Due Date Initials / Date 6.4 One recording-rain gage must be checked for accuracy and set up per the instruction manual. Record the starting time on Data Sheet #1. / -w-Initials Date i 6.5 Two floating evaporation pans, modified and ) installed per Figure 1, must be in place. Read and -l record the water level and the time of the reading for each pan on Data Sheet #1. Initials ~' lia t e DEC SP STP-138/2 5 Rev. 8

u

9 FNP-0-STP-125 6.6 Four liquid level recorders must be checked for accuracy against an accurate timepiece over a 24-hour period and verified to fall within an allowable error of 2%; the recorders must then be set up and placed in operation per the instruction manual. Record the starting time and starting elevation for each on Data Sheet #2. / Initials Date 6.7 The five observation wells drilled.for Pre-Op Test 012-5-006 must be inspected and determined to be in-useable. condition. Read and record the water level and time on Data Sheet #3. / Initials Date 6.8 The recording rain gage must be checked at least 12 hours after step 6.5 is completed. The measured rainfall rate must not exceed 0.1 inch per hour at any time during the 12 hours immediately preceeding the start of the test. Record time and the maximum rate of rainfall since the previous reading on Data Sheet #1. / Initials Date 6.9 The pond level indicators must be in service prior to starting the test. SW Pond Level Indicator NSP25LI4066A Cal. Due Date SW Pond Level Indicator NSP25LI4066B Cal. Due Date / Initials Date 6.10 Required Data and Documentation: The following data sheets and information are required. Data Sheet #1 - 1 required. Data Sheet #2 - 1 required. Data Sheet _#3 - 1 required. Data Sheet #4 - 1 required. Appendix A - 1 required. DEC SP STP-138/2 6 Rev. 8

FNP-0-STP-125 7.0 Instructions 7.1 A work authorization must be released before l implementation of this test. 7.2 Verify the pond water level is between 185.3 and 185.5 feet (preferably at 185.5) for test start and that the level has been maintained between 185.0 and 185.5 for at least 24 hours prior to starting the-test. / Initials Date ~3 < 7.3 Align the screen wash pumps to supply the lube and cooling water for the River Water System, per FNP-0-SOP-25.2. / Initials Date (Operations) 7.4 Remove the River Water Pumps from service. (Per step 5.5.2). From this point the River Water Pumps shall not be operated until the completion of the test, except as provided in step 8.5. / Initials Date (Operations) 7.5 Record on Data Sheet #1 the header pressure observed immediately after the River Water Pumps are shut off. Monitor this pressure, if it drops to 35 PSIG, notify the control Room to start a River Water Pump. When the header pressure reaches the previously recorded pressure, notify the. Control Room to stop the pump again. (It is preferable to have Operations personnel monitor header pressure and to communicate with the Control Room on pump operation). / Initials Date 7.6 Mark the test start on the flow measuring system (s), reset the totalizer (s), if. available, and assure that all system (s) are in working order. Record this time on Data Sheet #4 as the official starting time of the test. / Initials Date t DEC SP STP-138/2 7 Rev. 8 r

r FMP-0-STP-125 7.7 Check the liquid level gages'for proper operation at least once during and at the conclusion of.the test. Report the time of inspection and status of the equipment on Data Sheet-#2. _Also measure and record the ending. elevation at'each pier when the recorder.is. stopped at the' conclusion of the test. { / Initials .Date l i 7.8 Read and record the water elevation in each of l the floating evaporation pans at least once l during and at the conclusion of the test. (Data Sheet #1) q / Initials Date 7.9 Measure and record the water level in each of the five observation wells at least once l during and at the conclusion of the test. Record the time and water level on Data ~ Sheet

  1. 3.

i' / Initials Date i 7.10 Check the recording rain gages for measurable rainfall periodically during and at.the i conclusion of the test. (Data Sheet #1) j / _ Initials Date l 7.11 Check the flow measuring systems at least once~ l an hour during the test and at the official ending time and record data on Data Sheet #4. ] / Initials Date 7.12 Continue the test until~the pond level reaches-i approximately 184.7. feet MSL or until water is pumped-into the pond (see step 5.5). If at any time the measured rate of rainfall exceeds O.1 inch per hour, the test must be discontinued-_and may not be restarted until 12 hours after the last recorded rainfall rate of 0.1' inch per. hour or greater. / Initials Date' l l DEC SP STP-138/2 8 Rev. 8

FNP-0-STP-125 4 8.0 System Restoration 8.1 Open any River Water Pump Isolation Valves that were closed per step 5.5.5 (or N/A)'. / Initials Date (Operations) 8.2 Restore the River Water System to properly fill and maintain the pond level, per applicable steps in FNP-0-SOP-25.0 and FNP-0-SOP-25.2. / Initials Date (Operations) 8.3 Remove and recheck the accuracy of the liquid level recorders (see step 6.6). Store after completion of check. / Initials Date l 8.4 Remove and store the two floating evaporation pans. t Initials Date [ 8.5 Remove and recheck the accuracy of the recording rain gage (see step 6.4). Store after completion of check. / Initials Date t --- o f DEC SP STP-138/2 9 Rev. 8

FNP-0-STP-125 i DATA SHEET #1 Recording Rain Gage Location: N E Instrument Serial No.: Starting Time: Starting Dates. INCHES OF MAX RATE OF DATE TIME RAIN SINCE RAINFALL SINCE BY I LAST CHECK LAST CHECK e i L t i EVAPORATION PAN WATER LEVELS PAN 1 -PAN 2 { HATER WATER ? DATE TIME BY LEVEL DATE TIME .BY LEVEL i t 5 1 Pressure on River Water Header inunediately A PSIG after River Water Pumps are shut off B PSIG i BY / Signature Date DEC SP STP-138/3 1 Rev. 8 'I

i 4 FNP-0-STP-125 DATA SHEET #2 LIQUID LEVEL RECORDER CHECK SHEET Pier #1 Coord. N260986 E724000 Instrument Serial # Bottom of Gage Plate: 186.058' MSL Starting Elevation MSL Starting Date/Fime / Ending Elevation MSL Ending Date/ Time / k Pier #2 Coord. N259733.57 E724969.1 Instrument Serial # Bottom of Gage Plate: 186.081' MSL i Starting Elevation MSL Starting Date/ Time / Ending Elevation MSL Ending Date/ Time / Pier #3 Coord. N259000 E723950 Instrument Serial # Bottom of Gage Plate: 186.109' MSL s Starting Elevation MSL ~, - ~ Starting Date/ Time / Ending Elevation-MSL Ending Date/ Time / 3 i DEC SP STP-138/4 1 Rev. 6 u. m

D [ PNP-0-STP-125 DATA SHEET #2 (Continued) LIQUID LEVEL RECORDER CHECK SHEET DATE TIME BY STATUS Pier #4 Coord. N260662 E722650 Instrument Serial # Bottom of Gage Plate: 186.209' MSL Starting Elevation MSL Starting Date/ rime / Ending Elevation MSL Ending Date/ Time / I l DEC SP STP-138/4 2 Rev. 6 [ < +

~ FNP-0-STP-125 DATA SHEET #3 OBSERVATION WELLS WATER DATE TIME BY LEVEL Well # 101 Elevation: 188.96 feet MSL i at top of riser Well # 102 Elevation 205.22 feet MSL at top of riser Well # 103 Elevation: 218.54 feet MSL at top of riser Well # 104 Elevation: 121.38 feet MSL at top of riser i -DEC SP STP-138/5 1 Gen. Rev. 3 e

.. = FNP-0-STP-125 DATA SHEET #3 (Continued) OBSERVATION WELLS WATER IE BY Lagt Well # 105 Elevation: 198.21 feet MSL at top of riser 1 9 h h 0 t T i I / -r. 1 ) 1 DEC SP STP-138/5 2 Gen. Rev. 3 \\

NP-0-STP-125 DATA SHEET #4 FLON MEASURING SYSTEM DATE: OFFICIAL START TIME

  • OF TEST:

OFFICIAL FINISH TIME

  • OF TEST:
    • 10TALIZER READIN3 IN GALIONS / SYSTEM NO.

l DATI TIME 1 2 3 4

  • Time Recorded to the nearest minute.

Final Total

Last Reading Systems (1 + 2 + 3 + 4)

Gallons 1 Initial Total = First Reading Systems (1 + 2 + 3 + 4) = Gallons Total Gallons Pumped = Final Total - Initial Total = Gallons

    • If no t'otalizer is available, determine flow (and subsequent total flow) by reading the strip chart (MA) and applying the appropriate equation belows (attach data sheets as necessary) gpm = 7273.23 [0.9375(MA-4)]

(for 15" dp and 16 MA range instrument) gpm = 7273".'23"[2.8125(MA-4))" (for 45" dp and 16 MA range instrument) gpn - write in the equation used or NA Signed / Signs,ture Date DEC SP STP-138/6 3 Rev. 8 d

FNP-0-STP-125 l h APPENDIX A I COMPUIATIONS 1. Official Starting Time I DATE TIME (nearest minute) i 2. Recorded Pond Level at the IT. Official Starting Time (MSL) Gage 1 Gage 2 Gage 3 Gage 4 i i 3. Average Pond Level at the FT. Official Starting Time (calculate using 2) (MSL) i 4. Average Surface Area and A = 3 ACRES Volume at the Official Starting Time (from V = 3 ACRE-FEET areatrolume curve at the average pond level - Figure 3) t 5. Official Stopping Time i DATE TIME (nearest minute) 6. Recorded Pond Level at the 'IT. Official Stopping Time (MSL) Gage 1 Gage 2 Gage 3 Gage 4 7. Average Pond Level at the PT. Official Stopping Time j (calculate using 6) (MSL) 8. Average Surface Area and A, = ACRES Volume at the Official Stopping Time (from V, = ACRE-FEET area / volume curve at the average pond level - Figure 3) 9. Average Surface Area A= ACRES during the Test A = Al + A2. 2

10. Length of Test, (to the t=

HOURS nearest minute, expressed in hours) DEC SP STP-138/7 A-1 Rev. 8 l L

1 i FNP-0-STP-125 .a 11. Water Level in the Evaporation Pan: before starting the test E,= IN. E,= IN. 3 3 after ending the test E,= IN. E IN. = 3 2m 12. Total Measured Evaporation E IN. E IN. = = 1 2 (E, = E, - E,gg) (E =E E l l g ,) l 2s 1?. Time of Evaporation t,= HRS. t,, = HRS. 3 Measurements i 14. Evaporation Rate Q,= CFS Q,, = CFS 3 0,= 43,560 E A 1.0083 (E )(A) 3 3 3 t, l 12 X 3600 t, 3 3 0: = 1.0083 (E }IAI 2 2 C2 15. Average Evaporation Rate Q,=O: + Q,, = CFS 2 2 16. Total Rainfall Measured R= IN. during the Test 17. Average Rainfall Rate Q, = CFS Q, = 1.0083RA I t i 18. O,i = 0 unless water levels in the observation wells are higher than pond level. If well levels are higher than the pond level, consult SSI-Hydro Projects for computation of Q,,. 19. Average Service Water 0,, = cfs pumping rate during the j test period 1 Q,, = Total volume pumped (from Data Sheet #4 in gallons) 7.4805 X 3600 X length of test (from step #10 in hours) 20. Apparent Seepage Rate Q,' = cfs Q,' m 43560 (v - V,) - Q, - Q,, + Q,, 3 3600t Where: Q,, - kQ,, + C + 0.1 0, + 0.3 Q, + 0.5 Q,3 CFS = 75UUE and C = 435.6 (A + A,) + 0.875 DP, = FT' 3 \\ DEC SP STP-138/7 A-2 Gen, Rev. 3 k

FNP-0-STP-125 P, - pond perimeter (ft.) at the official stopping time (to be measured from contour maps) = FT. D = difference in the average water levels at the start i and the end of the test (ft.) - FT. k

Accuracy of the flow measuring system used to measure 0,, - (decimal fraction)

i 21. List of Definitions a. Official Starting Time - Time designated by the Test Supervisor as the starting time. t b. Official Stopping Time - Time designated by the Test Supervisor as the stopping time. c. MSL - Elevation Mean Sea Level. I d. Q,/ ring the test period.- Average rate at which water was pumped from the pond dt By: / Signature Date DEC SP STP-138/7 A-3 Rev. 7

FNP-0-STP-125 FLOATING EVAPORATION PAN l f I \\' i \\ h. l t i Ww s/ Plywood Evaporation Pan (Belfort \\

  1. 5-749) with STILLING well (Belfort #5-745)

Styrofoam A ! and HOOK GAGE (Belfort I

  1. 5-743)

/ Plywood Eyebolt NOTE: Pans may be floated in any convenient location on the pond at the descretion of the Test Supervisor. e Ff T.* *

  • 1 Gen. Rev. 3

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) 4 FNP-0-STP-125 TYPICAL LEVEL GAGE INSTALLATION Liquid level recorder (Belfort-4' Hook Gage

  1. 5-FW-1) complete with spring (Leopold & Stevens) powered chart drive, 4 inch Note:

This gage to diameter float, counterweight, be used for zeroing' perforated tape, ink and pen. all the level gages A and therefore only one Hook gage is reg'd for the test. .,, l 1.r. g C 4 1 .3 p 1 I i f, ,M., Concrete pier and ~ E y appurtenances per C'4#BC1080 I i I i g l s -o-I f i s i I ' e i s ~ ~ l s t s s . Figure 2 --- -- - -..- - -G en. R e v. 3 .-m. V.

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___-___3-. FNP-0-STP-125 Approximate locations of Observation Wells 101-105 and Piers 1-4 Well 101 is 50 ft due south of the Service Water Return to Wet Pit Vent and has no permanent barrier. Wells 102-105 have permanent barriers. Pier locations are approxinated. tl \\ A !\\ _' gha JL =.O' -[ l / \\. f. i y v \\\\

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