ML20054H016

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Standby Svc Water/Reactor Bldg Component Cooling Water Sys Heat Exchanger Test Performance, Revision 1
ML20054H016
Person / Time
Site: Pilgrim
Issue date: 04/27/1982
From: Armstrong W
BOSTON EDISON CO.
To:
Shared Package
ML20054H007 List:
References
TP-82-25, NUDOCS 8206220497
Download: ML20054H016 (13)
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Text

{{#Wiki_filter:- BOS ON L"7 ISOn CCCAW I; NITIEAR OPERL"'IO. S *)EPAR'!MF'NT PILGRIM NUC:.ZAR Pt=*ER ST.ATION Procedurs No. TP 82-25 SSW/RBCCW HEAT EXCHANGER TEST PERFORMANCE List of Effective Pages 82-25-1 Rev. 1 82-25-2 Rev. 1 82-25-3 Rev. 1 82-25-4 Rev. 1 l Attachtnents 82-25A-1 Rev. 1 82-25B-1 Rev. 1 82-25C-1 Rev. 0 82-25C-2 Rev. 1 82-25D-1 Rev. 1 82-25E-1 Rev. 0 82-25F-1 Rev. 0 82-25G-1 Rev. 0 82-25H-1 Rev. 1 Approved M PORC' Chairman /4 -# 7 -f D.e 8206220497 820616 PDR ADOOK 05000293 82-25-1 Rev. 1 O PDR l l

I. PURPOSE To monitor performance of the SSW system and RBCCW Heat Exchanger to assure that each operable loop of the SSW system can achieve a cooling capability ( equivalent to 5000 GPM flow at 65*F inlet SSW temperature through the~ respective RBCCW Heat Exchanger with the associated TBCCW Heat Exchanger throttled. This test will also be used to develop procedural guidance for ^^ backv~ ashing and cleaning RBCCW Heat Exchangers. II. REFERENCE Report entitled " Cooling Water System Study, Rev.1 - January 1982", Stone and Webster Engineering Corp. III. FREQUENCY This test will be conducted a minimum of four times during the startup from the 1981-1982 outage, as determined by the on-site safety and performance group. A test frequency will be established thereafter as a function of the cleanliness conditions determined from the test' data. IV. PREREQUISITES A. Two and only two SWW pumps running in the loop which is being tested. B. Screenwash pump should be off for the loop which is being tested. If this test must be performed and screenwash pumps cannot be secured due to plant conditions the resultant data must bs. adjusted to account for screenwash flow rate. C. RBCCW Heat Exchanger for the loop which is being tested must be back-washed just prior to (within 2 hour if practical) start of test. V. PRECAUTIONS Prior to start of test, those bearings which are cooled by TBCCW system and which are in alarm at 100% power condition, should be logged and monitored. During the test, TBCCW flow should be restored to normal if any bearing temperature increases more than about 5'F above its 100% power value and is in alarm. This precaution is not applicable during shutdown. CAUTION: Remove annubar flow element from system tap after performing test. VI. PROCEDURE A. Data Collection NOTE: This test requires data to be collected in the control room, in the screenhouse, and in the auxiliary bay. The procedure is written such that one or both loops can be tested. SSW Loop A Test 1. Obtain approval of NWE to conduct the test, lA. Insert annubar flow element into designated test point. (See Data Sheet.) 82-25-2 Rev. 1

2. Cloto M03808 ("C" SSW Pump Dischargy Black Valva) if pump C 13 not one of the two pumps to be used for the A' loop test, or close M03813 if pump C is one of the two pumps to be used for'the A loop test (in which case M03803 must be open). f 3. Regulate SSW flow to 2000 GPM (as indicated by, F16240 on panel C-1) using jog valves M03801 (IBCCW Heat Exchanger "A" Serv. 1 Water Outlet valve) and M03800 (RBCCW Heat Exchanger "A" Serv. g Water Outlet Valve). / 4. Collect data as indicated on Attachment A. 5. Repeat steps 3 and 4 to obtain data at approximately 3000 GPM, 4000 GPM and 5000 GPM (plant conditions permitting) by further opening jog valve 3800 and throttling down on jog valve 3801. 6. If, after completing step 5 jog valve 3801 is not fully closed, close valve 3801 fully and record max. flow data on Attachment A. 7. Return M03800 to normal (open). 8. Return M03801 to normal (open). 9. Return M03808 and M03813 to normal. 10. Remove annubar from test point. Cap test point. SSW Loop B Test 1. Obtain approval of NWE to conduct the test for loop B. lA. Inser annubar flow element into designated test point.(See Data Sheet.) 2. Close h03813 ("C" SSW Pump Discharge Block Valve) if pump C is-not one of the two pumps to be used fo'r the loop B test, or close M03308 ff pump C is one of the pumps to be used for the loop B test (ir. which case M03813 must be open). 3. Regultte 3SW flow to 2000 GPM (as indicated by FI6241 on panel C-1) s. sing jog valves M03805 (TBCCW Heat Exchanger "B" Serv. Water outlet Valve) and M03806 (RBCCW Heat Exchangar "B" Serv. Water htlet Valve). 4. Collect riata as indicated on Attachment B. 5. Repeat steps 3 and 4 to obtain data at approximately 3000 GPM, 4000 GPM, and 5000 GPM (plant conditions permitting) by further opening jog valve 3806 and throttling down on jog valve 3805. 6. If, after completing step 5, jog valve 3605 is not fully closed, close valve 3805 fully and record max. flow data on Attachment B. 7. Return M03806 to normal (open). 8. Return M03805 to normal (open). ' - ' 82-25-3 Rev. 1 ~,-

/ J' ) / 9. Return M03808 and UO'H13 to normal. b 10. Remove annubar.from test point. Cap test p61nt. / 11. Return all data to Shif t Technical Advisor for evaluation. 1 B. Calculations 1. Calculate the Heat Exchanger A P by takine the difference in gage readings and subtracting 2.24 psi for each flow point and plot on Ht Exchanger A P vs. Flow Curve (Example - Attachment D). 2. For each flow point calculate A P/Q and plot versus SSW inlet temperature (Example - Attachment E). 3. Perform calculations on Attachment C for maximum flow point only and plot on hydraulic grade line curve (Attachment F). 4. For max flow point, calculate A P/Q and plot versus inlet temperature (Example - Attachment E). Use this point to compare to acceptance criteria. Points which lie below - left of design curve are >5000GPM equivalent flow at 65'F SSW inlet temperature. VII. ACCEPTANCE CRITERIA Acceptance Level A Loop B Loop Corrective Action L Acceptable: (Max flow None >5000 GPM equivalent at 65*F. Unacceptable: (Max flow Backwash & Retest. If <5000 GPM equivalent at still unacceptable, de-65*F clare loop inoperable - remove RBCCW Bt. Exch. and Clean. Watch Engineer Notified: Date Performance Engineer or STA Date Watch Engineer Acknowledged:' Watch Engineer MR Issued i f' L 82-25-4 Rev. 1

ATTACHMENT A SSW PERFORMANCE TEST DATA - LOOP A Date: By: ~ ( Time: 2000 3000 4000 5000 MAX CONTROL ROOM GPM GPM GPM GPM FLOW SSW Loop A Inlet Temp. (Computer Point M077) Scavater Level-East (LI 3831A) Ft. l SSW Flow Loop A l (FI 6240) GPM 1 SSW Pump Presn1' Loop A (PI 3828) PSI SALT SERVICE AUXILIARY BAY Press. Indicator at PX3839A I Press. Indicator at FE6240 Press. Indicator at PX3844 AP Indicator RBCCW Ht. Exch. A f TEEN HOUSE k SSW Pump "A" Dis. Press PI3802 SSW Pump "B" Dis Press. PI3807 SSW Pump "C" Dis. Press. PI2312 Actual Seawater Level Below Grate at El. 11'0" Screenvash Pp 213B Suction Pressure

  • Discharge Pressure *
    • MCC B-15
      • MCC B-10 (C.S.R.)

I ADDITIONAL DATA (SSW BAT) Annubar FI O FE "6240 (GPM) l Annubar FI @ TI 3872 (GPM) l f f SSW Pump A AMPS ** l l f SSW Pu=p B AMPS ** l l l SSW Pump C AMPS *** ADDITIONAL DATA (SCREENHOUSE) Annubar FI @ DISCHARGE HDR. (GPM) { 82-25A-1 Rev. 1 O e

ATTACHMENT 'B SSW PERPORMANCE TEST DATA - LOOP "B" Date: By: n f Tims: 2000 3000 4000 5000 MAX CONTROL ROOM GPM GPM GPM GPM FLOW SSW Loop B Inlet Temp. (Computer Point M078) Sacwater Level-West (LI 3831B) Ft. SSU Flow Loop B (FI 6241) GPM SSW Pump Press. Loop B (PI 3829) PSI SALT SERVICE AUXILIARY BAY Press. Indicator at PX3839B Press. Indicator at FE6241 Press. Indicator at PX3848 A P Indicator RBCCW Ht-. Exch 5 CREEN HOUSE ( 'SSW Pump "C" Dis. Press. PI3812 SSW Pump "D" Dis. Press. PI3817 SSW Pump "E" Dis. Press. PI3822 Actual Seawater Imvel Below Grete at El. 11'0" Screenwash Pump 213A Suction Pressure

  • Discharge Pressure *
    • MCC B-14
      • MCC B-10 (C.S.R.)
  • Rscord if ON only ADDITIONAL DATA (SSW BAY)

~ Annubar TI @ FE 6241 (GPM) Annubar FI @ FI 3849 (GPM) SSW Pump C AMPS *** SSW Pump D AMPS ** SSW Pump E AMPS ** ADDITIONAL DATA (SCREENHOUSE) Annubar FI @ DISCHARGE HDR. (CPM) V 82,25B-1 Rev. 1 G

NSTACHMENT C SSW MAX FLOW CALCULATION AND HYDRAULIC GRADE LINE I. MAX FLOW CALCULATION ( A. Average tide level ft. B. Salt Service Water Pumps Total Flow TDH Presh from pump curve Pump Discharge Water (upper line on (Specify Off) Pressure (C. Below) Attachment C) P-208A psig Ft GPM P-208B psig Ft GPM 1 P-208C psig Ft GPM A Loop GPM P-208C psig Ft GPM P-208D psig Ft GPM P-208E psig Ft GPM C. Pump TDH (fresh water) TDH = l(Pump Disc. X'2.239) + 30.6 - ave. tide.)'x 1.03 + 0.8 ft. Press. D. Screenwash Flow Diversion. PERFORM ONLY IF screenwash pump remained in serivce. P213B discharge press psi P213A discharge press psi P213B suction press psi P213A suction press psi P213B dP psi P213 A P psi P213B Head AP x 2.307 = Ft P213A HeadaP x 2.307 = Ft P213B Flow GPM P213B Flow GPM from Attachment H from Attachment H Flow Adjustment: A Loop Max Flow = A Loop Flow from.B above - P213B flow GPM = B Loop Max Flow = B Loop Flow from B above - P213A flow GPM = V v i 82-25C-1 Rev. 0 _y ,p., --- - =

ATTACHMENT C (CONT'D.) 11. P/Q CALCULATION A Loop B Loop ~~ 1. Max Flow (Attach C. Sect 1) CPM GPM 2. A P RBCCW Ht Exch (Attach A or B) psi psi 3. O P/Q -@/@ 10 mai 10 nsi CPM" 4. SSW Inlet Temp (Attach A or B)

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.gPM-111. HYDRAULIC GRADE LINE POINTS A p B Mp 1. Pump TDH (Salt Water) TDH,y) = TDH/ Ave /1.03 Ft Ft g 2. ' Header Pressure H = (P gage X 2.239) + 29.5 - ave. tide Ft Pt 3. Aux Bay Inlet: H = (P gage X 2.239) + 14.0 - ave. tide Ft Ft 4. Local Pressure at flow element: H = (P gage X 2.239) + 8.0 - ave. tide Ft Ft 5. Pressure / Vacuum Point: H = (2 vac gage x 2.239) + 16.0 - ave. tide Pt Ft (NOTE! P Vac gage = in Hg I 0.491 This point is often at vacuum) 6. AP Heat Exchanger AH= P gage x 2.239 - 5 f t.. Ft Pt ( 82-25C-2 Rev. 1

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