ML18114A713
| ML18114A713 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 06/18/1979 |
| From: | Stallings C VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | Harold Denton, Schwencer A Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML18114A714 | List: |
| References | |
| 488, NUDOCS 7906210210 | |
| Download: ML18114A713 (42) | |
Text
{{#Wiki_filter:I '\ e VIRGINIA ELECTRIC AND POWER COMPANY RX~HMOND,VXRGXNJ:A 23261 June 18, 1979 Mr. Harold R. Denton, Director Serial No. 488 Office of Nuclear Reactor Regulation PO/FHT:baw Attn: Mr. Albert Schwencer, Chief Docket No: 50-280 Operating Reactors Licensing 50-281 Division of Reactor Licensing License No: DPR-32 U. S. Nuclear Regulatory Commission DPR-37 Washington, D. C. 20555
Dear Mr. Denton:
Surry Power Station Units 1 and 2 480 Volt Emergency Power System Attached is additional information concerning the Surry Power Station Units 1 and 2 480 volt Emergency Power System electrical load analysis, system modifications, and testing procedures. This information was previously provided to you in a May 17, 1979, meeting and by courier on or about June 8, 1979. If you have any questions or require additional information, please contact this office. Very truly yours, C. M. Stallings Vice President-Power Supply and Production Operations cc: Mr. James P. O'Reilly 7 9 0 6 2102/0
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; eee.21 I FHV,.L DESIG~*l Tl:ST!HG I
surrnY POWER SH."fiON VIRGIN~A CLLCTRlC t...:~D PUWE:R COFPAi*lY ATTAC:H TO: Flt!AL DESIG,: COIHINUING PROCEDURE DESIGM CHAIJGE HO. 2 79-Sl8 TESTl'1G PHOCCDUHE: 3 This procedure provides the information for the testing of the 480 V Emergency Bus following the addition of the t,-;o load centers. 2.0 Initial Conditions
- 2. 1 The Final D.esig*i; -Cc,~:~:*c,J.ling rrocedure is complete and properly signed-off.
7..2 Unit No. 1 is at cold shutdown.
- 2. 3 Review entire controlling procedure and familiarize p(:*ec:;onn.el ,*Ii Lh its purpose, precautions and equipment locations.
- 2. 4 Notify Shift Supervisor of the work to be. perfm:rncr 1 *
- 2. 5 Mainte.111:tnc:e Reports submitted as required.
2.6 Q. C. notified prior to test. 3.0 Precautioas
- - ,3. l All work must br:: do:.1e in compli&nc,= Pith Vepcc* Lccioent Prcvc;,U.un.
Hanuz.l.
- 3. 2 All switching or the energizing ar..d de*-cnerg:i.zing, o:: co~,p*:*n::::1'..G ,::Lll be accoml)lished by operations pen:onnel.
- 3. 3 Ensure that instrunv:.Tts used to obtain test p3.i:ametc-:cs are cor1,;iE:t8ut, with type transformer and load.
- 3. !~ When me~1~;uring cun. en"t. prior to connec tir.g the t2s t equi.pn,eri. t to the relay, uac a V.O.N. to verify continuity of the current path through the test equipment.
3.5 Protect:.:.c:-**._.-,,~.-,*.""***:'. .,.,~* -.~*'*,ent shall b2 in service when the test con-- necU.ons are made. 3.6 The total current demand must never be greater thm1 lGGO amps.
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I I FIMAL DESIGN TESTING surmY POWER STATION VIRGINIA ELECTRIC AND POWER C01/.PAHY 1------------------------------------.----- ATT/,CH TO: FINAL DESIGN CONTINUIHG PROCC:DURE CESIGN CHAtiGE NO. 79-SlS TESTil~G PROCEDURE: 3 4.0 Instructions 480 V EMERGENCY BUS 11 IH 11 TEf:,T 4.1 .Attach all special instrumentation as per Attachment A. 4.2 Perform Periodic Test l-PT-18.l, steps 1.0 thru 4.2. NOTE: The Low Head Safety Injection pump should be run at least fifteen (J.5) minutes but normally not more than thfrty (30) minutes when operating on Low Head Safety Injection Recircu-lation lines. 4.3 Perform Periodic Test 1-PT-17.3, steps 1.0 thru 5.7. 4.4 Perform Periodic Test l-PT-17.1, steps 1.0 thru 4.1.21. 4.5 Perform Periodic Test l-PT-17.2, steps 1.0 thru 5.1. 4.6 Complete the attached status list of the components powered from MCC-lHl-1 and HCC-lHl-2. 4.7 Establish continuous communication between the Control Room Shift Supervisor (Unit {/1) and the Specic"t]. Instrumentation Group at -;:he L1.80 V Emergency Bus "Ill". Q.C. HOLD POINT; Witness the data acquisition 4.8 Obtain a pre-test load value from the installed instrumentc:.tion. AMPERES (PHASE _) VOLTAGE (PF'.ASES ) At cable //IH7PL1 MCC lHl-1 At cable #lHlOPLl MCC lHl-2 4.9 If plant conditions permit, cycle the pressurizer he2ter 250 ~l Group E. (This step is to be perfonned only with Shift Supervisor's permission.) Obtain current reading at cable If pressurizer heater. Amperes
" 888.21 FINAL DESIGN TESTING SURRY POWER ST f. Tl ON VIRGINIA ELECTRIC AIW POWr.:R COM"ANY hTTACH TO: FINft.L DESIGN CONTINUING PROCEDUf1E DESIGN CHAIIGE NO, 2
- ., 79-Sl8 TESTING PROCEDURE: 3 4.0 Instructions (Continued)
NOTE: The maximum length of run time of any pump is to be thirty (30) minutes. NOTE: The motors will be started at three (3) minute intervals. 4.10 Start each motor in sequence indicated below.
- Initial/Time 4.10.1 Low Head Safety Injection (1-SI-P-lA) /
4.10.2 Outside Recirc Spray (l-RS-P-2A) I 4.10. 3 Containment Spray (1-CS-P-lA) I' 4.10.4 Start 1-VS-F-lA I NOTE: Ten (10) minutes after start of 1-VS-F-lA, measure and record the required data on Data Sheet 1. 4.11 Start the inside recirculation spray pump (l-RS-P-1.A). NOTE: Maximum run time on 1-RS-P-lA is thirty (30) seconds. 4.12 Stop 1--RS-P-lA within 30 seconds of start. 4.13 Stop 1-SI-P-lA I 1-CS-P-lA I 1-RS--P-lA I 1-VS-F-lA I 4.14 Measure. current at
.AMPERES (PHASE Cable {/1H7PL1 MCC lHl-1 Cable #lHlOPLl MCC lHl-2 4.15 Return equipment to normal as per respective periodic test.
4.16 Disconnect all special instrumentation at the 480 V Emergency Bus II IH".
.F ATTACH TO:
-----1 FINAL DESIGt,: TE~,Tli'!G surm.\' POWEi{ ST FTION VIRGIN!/,, ELECTRIC AHD POV/ER coi:PANY I
- * - * - - - - - - - - - - - - - - - - - , . - !DESIGN FINAL DESIGN COIHltlUING PHOCEDURE
- - - -CHANGE
- : - - -tlO.
- * - - - - : - -2 j 79-S18 TESTING PROCEDUHE: 3 4.0 Instructions (Continued)
L,. 17 Remount any panels taken off the 480 V Load Center.
!180 V EMERGENCY BUS '*'IJ TEST 4.18 Attach all special instrumentation as per att11chm,2nt B.
4.19 Perfoi:-m Periodic Test l-PT-18.1, steps 1.0 thru !.1.2. NOTE: The Low* L:.ad Safety Injection pump should be run at least fifteen (15) minutes but normally not more than thirty (30) mi.nutes when operating on Low Head Safety Injection Recircu*- lation lines. 4.20 Perform Periodic Test l-PT-17.3, steps 1.0 thru 4.2 and 5.20 thru 5.26. 4.21 Perform Periodic Test l-PT-17.1, steps 1.0 thru 4.1.21. 4.22 Perform Periodic Test l-PT-17.2, steps 1.0 thru 5.1. 4.23 Complete the attached status list of the component;:; powered f1:om MCC-1.Jl-l anc. HCC-lJl-2. Establish continuous cmmnunicat:Lon between the Co,1ti:cl Roo:!l. S),:i.ft - Supervisor (Unit Ill) and the special :i.nstrumentat:::_on gr-1 up ,?.t the 480V Emergency B:is "IJ". Q.C. HOLD POINT; Witness the do.ta acquisition 4.26 Obtain a pre-test load valus from the installE=d i.ns:.:.nnnentatton. AHPERES (I'llASE At cable #lJGPll MCC lJl-1 At cable /llJlOPLl NCC lJl-2 4.26 If plant conditions permit, cycle the p!:'essurizer heater 250 KW Group#. (This step is to be performed only with Shift Super¥1sor'~ permission.) Obtain current reading at cable #1J9PL1 pressurizer heater. Amperes
II 080.21 Ffl~AL DESiGN TEST!HG I SURRY POW!:R ST ATrOH V!RGll~IA ELECTRIC I.ND POl'ffR COY,PMlY ATTACH TO: FltlAL DESIGN COtlTINUING PROCEDURE DES1G1l CH,\HGE IJO. 2 79-SJ.8 TESTIHG PRO CE DU RE: 3 4.0 Instructions (Continued) _ _ NOTE: The maximum length of run time of any pump is to be thirty (30) minutes. NOTE: The motors will he started at three (3) minute intervals.
- 4. 27 Start each motor in sequence indicated below.
- Initi.al/Time
-- 4.27.1 Low Head Safety Injection (1-SI-P-lB) I 4.27.2 Outside Recirc. Spray (l-RS-P-2B) I 4.. 27 .3 Co1;1tainment Spray (l-CS*-P-lB) I- -
- 4. 27 .4 Start 1-VS-F-lB I- -
NOTE": Ten (10) minutes after start of 1-VS-F-lB, measure and record the acquired data on Dat3 Sheet 1.
- 4. 28 Start the inside recirculation spray pump (l-RS-P*-lt).
NOTE: Maximum run time on 1-RS-P-lB is thirty (30) seconds, 4.29 Stop 1-RS-P-lB within 30 seconds of start. Initial/Time 4.30 Stop 1-SI-P-lB I 1-CS-P-lB I l-RS-P-2B /" l-VS-F-113 I 4.31 Measure current at AMPERES (PHASE ) VOLTAGE (PHASES Cable #1J6PL1 MCClJl-1 Cable #lJlOPLl MCC lJl-2 4.32 Return equipment to normal as per respective periodic test. r,' , .. - <; ('*. :-
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-a 686.21 FltU,L DESiGH Tr;STii-!G e
SURRY FO\'ff.:R STATIOH VIRGIi-ii/\ i:LEC.:TRiC M~D POV/ER CO/i,PA14Y ATTACH TO: FltlAL DESIGtl CONTINUING PROCEDURE 2 1E:;-r11;G Pr-!OCEDURE: 3 4.0 Instructions (Continued)
- 4. 33 Disconnect all special ir,strumentation o.t the l-180V Emergency Bus "lJ' 1
- 4.34 Remount any panels taken off the 480V Load C~ntei.
LOGIC TEST NOTE: The purpose of this portion of the test is to verify that L,SOV pump motors in the engj_neered safeguards systems will start upon receipt of the appropriate safeguards initiation signal. (REF. ESK .6AA, 6AB, 6AC, 6A.D, 71~, 7P; W 113E243 Sh. 7) 4.35 Rack Breaker J,4H3 .(I-SI-P-LJ\.) into the test positim**.
- 4. 36 Place the control switch for 1-SI-P-lA in tl11:: Auto po~ition and verify green light is lit.
4 .37 Simulate a safety iilj ection sign;:1.J. by plc:.c~ng a jumpe:c from point to point 10 on SI5L.:en:iI-1~ 4.38 Verify illumination of red light on control board for 1-SI-P-lA. 4.39 Remove jumper installed by step 4.37. 4 .40 Turn control switch for 1-SI-P--lA to the off position. Re.turn breaker 14ll3 to original position.
- 4. 41 Rack breaker 14J3 (1-SI-P-lB) into the test position.
4.42 Place the control switch for 1-SI-P-lB in the auto position and verify illumination of green light:. 4.43 Simulate a safety injection by placing a jumper from point to point on Sl5BTB5H.
- -----10 4.44 Verify illumination of red light on control board for 1-SI-P-lB .
.._____________ -------------*--------------*---------------J
- I Fll*!AL DES!GH TEST!i~G SURr.:y POWER :;TATICI'*!
VIRGINlA ELF.CTRIC AH!) ;-*O\'/ER CO'.\PAtH /,TTACn TO: Fl:*lAL DES1Gi1 cornltlUIIJG PROCEDURC 1 IDES1Gt< CHAl<GE rm. 2 79-Sl8 TF.:STIHG Pr~ocr:DUHE: 3 4.45 Remove jumper installed by step 4.43. 4.46 Turn control switch for 1-SI-P-lB to the off position. 4.47 Return breaker 14J3 tci original positi~n. lf.lf8 Ra('.k breaker 14H4 (1-RS-P-lA) into the test position. 4 ,.L;9 L ,:":~ .::,Le. control switch for 1-RS-P-lA in the Auto position and verify illumination-of green .light. I+ .SO Simulate CLS Hl 111 initiation by jumpering contact 2 of TS-CLS*-2Al.
- 4. 51 After two minutes, verify illumination of red light for 1-RS-P-lA.
4.52 Remove jumper installed by Step 4.50. 4.53 Turn control switch for 1-RS-~-lA to the Off position. 4.SL, *Return breaker J.L,H4 to origirnd. position. 4.55 Rack breaker 14J4 (1-RS-P-lB) into the test po1:ition. 4.56 Place the control switch for 1-RS-P-lB j_;:1 the Auto position and verify illumination of gre12n light. 4 .57 Simulate CLS Hi Hi initiation by jumpering conLcl: no. 2 of TS-CLS-2Bl. 4.53 Aft,'.:J~ -*o minutes verify illumination of red light for 1-RS-P-lB. 4.59 Remove jumper installed by Step 4.57 .
. 4.:fP ...'.\,:: *. ,: .... ;:rol switch for 1-RS-P-lB to Off .
4.Gl Ret.u.i:n breaker 14J4 to original positi::in.
I -...*
<8&0.21 FINt*.L C~S!GH Tf:STlHG SURf.!Y p:JWf:~-< ST,(\ TiOi~
\'li-Gii-:l/, £:LECTr(lC Atrn P.O'fi:R co:.: 0 ,\NY ATTIICH T'J: F1!4AL OESIGN COnTl/!Ult,G Pf<OCEDUHr: t IDESI G tl CH Ail GE MO. 2 79-S18 IEST!f~G PROCEDURE: 3 4 .0 Instruct:i~0ns (Continued) 4.62 Rack breater 14ll5 (1-CS-P-lA) into the test position.
- 4. 63 Plu::e the control switch for 1-CS-P-lA in Auto and
~erify illumination of green light.
/+,64 Sfa~.1:c::i:-*-CLS Hi Hi by jumpering contact 18 on TS-CLS--2Al.
i+. 65 Ve':-.:_*\/..:J_' >.unination of reel indicating light for 1-CS-P-lA. 4.66 Remove jumper installed by Step Lr.64. 4.67 Turn control switch for 1-CS-P-lA to Off. I+. 68 Return bre.D ker 14HS to original position. 4.69 R.ac:k breaker 14J5 (1-CS-P-lB) into the test posi::ion.
- 4. 70 Place the control sw:i.tch for 1-CS-P-lB in Auto and ver:i.fy ill,; 11ina.tion of green light.
0
- 4. 71 Simulate CLS Hi Hf by juaped.ng conta.c:ts 18 on TS-CLS-21\L
- 4. 72 Verify illumi2e.tion of -red indicating light foT l-Cf,-P-*113._
- 4. 73 Remove jumper installed by Step l;. 71.
4.74 Turn control switch for f-CS-P*-lB to Off. 4.75 Return breaker 14J5 to original position.
- 4. 76 Rack breaker 14H7 (1-RS-P-2A) into the test por:1.tJ.on,
- 4. 77 Place the control switch for l-RS-P-2A to the A,1to position.
- 4. 78 Simulate CLS lii Hi by j umpcd.ng contact set 1 on TS-CLS-2A?...
- 4. 79 After 5 minutes, verify illwnim~tion of red light for l-RS-P-2A.
/ n oeD.21 FINAL DES!Gt: TEST!:*{G SURRY PO't';ER ST,-\TlOi*! VIRGl!-llA ELECTH!C Al--iD PO\{Ef: COl:'.f'AMY l A TT /..CH TO: FI~! AL DESI Gt, COl,TIMU iN G PROCEDURE 1 IDF.S1CN CHAtiGE t/0. 21 79-Sl8
-----------1 TESTING PROCEDURE: 3 4 .0 Inst1::_uctions (Continued)
- 4. 80 Remove jump er installc(l by Step 4. 78.
4.81 Turn control switch for l-RS-P-2A to Off. 4.82 Return breaker 14H7 to original position. 4.83 Rack breaker 14J8 into the test position.
- 4. 84 Place the control switch for l-RS--P-*2B in Auto.
4.85 Simulate CLS Hi Hi by jumpering cor..tact 1 on TS-CLS-2B2. 4 .86 After 5 _minutes, verify illumination of red light for l-RS-P-2B. 4.87 Remove jumper installed by Step 4.85. 4.88 Place control switch for l-RS-P-2A Off.
- 4. 89 Return breaker lffJ8 to original position.
ll !HlU.21 l Fit!AL DES1CH TESTl~{G I SURRY PO','/E r~ :;T /\ Tl O!'l
'.'IRG!Hlt. [l.!::CTr-~!C AND f>i)'.'/[;P. COMPAt*!Y ATTACH TO: FINAL DESIGN CONTINUIHG PROCEDURE 1 IDESIGN CHM<<;[ l*W,
_ 79-Sl8 l'ESTll*;G PROCEDURE: 3 5.0 ACCEPTANCE CRITERIA 5.1 l180V L0!-1D CENTERS lH AND U The resuJ.ts of this test are acceptable if the KVA drawn by the equipment is within the. range given below for each motor (See Attach-- ment C). BUS lH I Equipment Range of Acceptabk KVA 1-SI-P-lA, 1B 217KVA to 265KVA l-RS-P-2A, 2B 198KVA to 242'i0/A 1-CS-P-lA, 1B 133KVA to 163KVA l-VS-F-L4., 1B less than 124KVA 1-RS--P-lA, 1B Complete KVA drawn for the equipment using voltage and currents recorded during the test. 1-SI-P-lA volts X amps X IT= ';DJA 1-Rs-r--21:.. volts X .. _amps X 'fr= KVA 1-CS-P-lL. .- volts X amps X '~ 3 - KVA 1-VS-F-lA volts X amps X 'f3 = ----KVA l-RS-P-1},. volts X amps X \[3 = ----KVA l-SI-P-113 volts X amps X TI:,, KVA l-RS-P-2B volts X amps X "{3 = l;J/A 1-CS-P-lB volts X amps .._. {3,-. KVA 1-VS-F-lB volts X amps X 'D = KVA 1-RS-P-lB volts X nmps X fr= }-::.I A An cnginc,,ring rc\*:1.o.w will be pc~1:formcd ou ,my equ:i.pm,2nt. KVA which falls Oltt-siclc the ac:ce1ptanc0 rc1ngc.
,I ft [;[l~.21 l e Flt!AL DE:S:G~*l TESTil,:G SURf-!Y F'O'N[:f.! !_;T/.\T!nH VIRGll~IA EU:CT!~iC Al~D i'GWE!: COi,H'AtW ATTACc: TO: Flt~AL DESIGll cot,TINUING PROCEDllnE _J 1DESIGN CH/,;IGE IJQ, 79-S18 2 3 5 .1 480V LO/ill CENTER lHl AND lJl The only loads connected to J.oc1d centers lEl and lJl are Hotor Control Centers. The accept'-'nce criteria for* the test results for tlw.se ht!ses will be that the KVA drawn by th8 Motor Control Center are below the design maximum listed below. HCC lHl-1 38L1KVA MCC lHl-*2 275!0JA HCC lJl-1 368KVA MCC lJl-2 367KVA
'I'--~
MCC llU-J.: volts X amps X ~ 3 = 10lA 1-- MCC lHl-2: volts X amps X \ 3 = KVA MCC lJl-1: volts X amps X \\3 = KVA
- MCC lJl-*2: volts X amps ,. V
\)3 = - - - - -KVA 5.3 LOGIC T;::ST' The tGst of the equip'.Tlent start circuits is co'nsidere.d to be acccptr,ble.
if each pur,p motor indicates a start as required afte:c tLe initi2.t:icn of the appropriate safeguards signal. COHPLETEI:: EY: DATE: RECO:MHEND APPROVAL: DATE: APPROVED BY: - - - - - - - - - - - - * - - - - - - Chainn~n, Station Hcrn..:'. 6 er Safety and Operating Co~nittee DATE: L.___.
/ DC 79-SJ.8 Di\TA SHEET 1 BUS III VOLTHETEll SQC i f - - - - - - - M!HETER SQC ft - - - - - - - -
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--------1 e MCC U.l*-2 LO,a\DS DC 79-SlG I
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e DC 7'J-SU3 ATT/>,CHMENT A INSTALLATION OF SPECIAL II*JSTRUMENT!tTICJ:; 4160V BUS lH POWER MEASrJfU~l-lENT INITIALS /DATE ~---/~~ 4.1.1 Verify that Bus 1H P.T. located in cubicle 15H3A has a a ratio of 35:1. I 4.1. 2 V2rify that Bus P.T. secondary fuses located in cubicle 15H3A on device "LC 11 LC2-A(ii, LC6-B¢ 1 LCl1-CqJ. I 4 .1. 3 Instrmaent connection to P. T. secondary fuses shall be made with leads fused at one (1) amp. BUS lii S.S. TRANSFORHER FEED:<'.R ____.! 4.1. 4 Verify that phase current transformer ratio is 300/5 (60:1).
I 4.1. 5 A qi current shall be read in cubicle 15E7 at s:ud "5" of device PC with studs l, 2, 6, 9 and 10 U-linked.
I 4.1.6 C cp current shail be read in cubicle 15H7 clt stud "5" of device PA with studs 1, 2, 6, 9 and 10 U-linked,
I 4.1. 7 Verify that the installation of all special instru-mentati_on.
Voltmeter SQCr:1 Ammeter SQC/,1
DC 79-S18 ATTACHMerr 13 INSTALT,ATION OF SPECIAL INSTRm1ENTATION 4160V nus lJ POWER MEASUREMENT INITI.ALS/DATE _ _ _/ _ _ 4.18.1 Verify that Bus lJ P.T. located in ~ubicle 15J3A has a ratio of 35: 1. 4 .18. 2 Verify that Bus P.T., secondary fuses located in cubicle
/
11 15J3A on devic~ LC 11 LC2--A¢, LC6-B¢, LC4-C¢ are used.
/_ _ 4.18.3 Instrument connection to P.T. secondary fuses shall be made with leads fused at one (1) amp.
BUS 1J S.S. TUJISFOR~ffrn FEEDER I _ 4.18.lt Verify that phase current transformer ratio is 300/5 (60:1). __/_ IJ,, 18. 5 A cj, current shall be read in cubicle 15J7 at stud 115 II of device PC with studs 2, 6, 9 and 10 U-linked.
-1 '
I 4.18.6 C q, current shall be read i.n cubicle 15J7 at stud 115 rr of device PA with studs 1, 2, 6, 9 and 10 U-link.ed. I 4.18.7 Verify the installation of all special instrumentation. Voltmeter SQC# Ammeter SQC/t
e DC 79-Sl8 ATTACHMENT C GENERAL NOTES
- 1) This test includes the running of the containment recirculation fans concurrently with all of the safety moto~s on the bus. During acci-dent conditions these fans are automatically shed by a CLS signal. A more se\rere loading of the bus is obtained by operating these fans during the test to help demonstrate the capability of the bus.
- 2) The acceptance criteria for the motors was set at +10% of the pre-dicted KVA load. This range considecs the voltage drop in the motor leads and tolereuces j_n the mecha.nical equipment, the test loops or*
the equipment curves use.d to derive the predicted values. The predicted KVA was obtained as follows: A) 1-SI-P-lA,B This pump is tested in a minimum recirculation mode which is essentj_ally equal to a shutoff head of 270 HP. The predicted KVA was calculated as follows: HP AT SHUTOFF HEAD (F .L. Amps) (rated vol tage)\G = RATED HP 270H~(280AHP) (460V)\f3 = 2t,l KVA 250HP Ran8e .!.10% = 265-217 KVA B) i.-RS-P-2A 1 B Thfa pump is tested at a shutoff head of 240 HP. 240HP (346 AMP) ((60V)\T = 220 KVA 300HP Range +10% = 242-198 !CVA C) 1-CS-P-lA, B This pump is tested in the recirculation mode, The predicted KVA was calculated using a developed head of 120 psig and a flow of 1600 GPM. The brake horsepower of 175ITP wcs taken from the pump curve for these conditions. 165 HP (232AMP) (L160V)'fr = 148 KVA 2soni Range +10% - 163-133 KVA _j
e A t,tac hmen t C (.cont :i.,-: *1c:d) DC 79-SlS D) 1-VS,-F-l.A,1:. Many, factors hifluence the horsepower required by this fan, such as air pressure or density -.:md the pitch of the adjustable fan blades, The predic te.d KVA for this fan :l.s a maximum rather tha.r, a l:(';Hg*.::, (156ANI') (!i60V) (IT ) = 124 KVA (125HP motor) E) 1-RS**P-J_A,B This pump is tested in the dry condition. The predicted KVA has been left blank pending the installation of the new motors and the revision of the performance test KVA. parameters.
ADDITIONAL INFORMATION FOR 480 VOLT EMERGENCY POWER SYSTEM MODIFICATIONS SURRY POWER STATION UNITS 1 AND 2 DOCKET NOS. 50-280 50-281 LICENSE ~OS. DPR-32 DPR-37 ISSUED: JUNE 8, 1979 VIRGINIA ELECTRIC AND POWER COMPANY 1'1 9 O6 2 I o 2 IL{
1.0 Mechanical System Analysis The following is an Engineering Review to determine and show worst case mechanical pump horsepower loadings for the following pumps:
- 1. Low Head Safety Injection
- 2. Containment Spray
- 3. Outside Recirculation Spray
- 4. Inside Recirculation Spray For each *pump several conditions are reviewed unless otherwise specified. The conditions are:
A. Two pumps running then one trip. B. Shutoff C. Initial start on an empty system D. Normal flows
- 1. Starting flows if restricted during initial start E. Curve and System Runout A summary of mechanic~l horsepower conditions are shown below. Electrical starting currents are not shown.
Shutoff Curve Runout Design Point Est. Worse Motor Motor Pump BHP BHP BHP Case BHP BHP S.F. LHSI 270 240 240 270 250 1.15 c.s. 1-cs-P-lA 120 230 220 220 250 1.15 1-CS-P-lB 120 230 220 220 250 1.15 2-CS-P-2A 120 230 220 220 250 1.15 2-CS-P-2B 120 230 220 220 250 1.15 O.R.S. l-RS-P-2A 240 300 280 300 300 1.15 l-RS-P-2B 240 300 280 300 300 1.15 I.R.S. 1-RS-P-lA 220 270 270 270 300 1.15 1-RS-P-lB 220 260 260 260 300 1.15
Low Head Safety Injection - LHSI Reference Flow Diagrams FM 106A and FM 106B, also Pump Curve shown in Figure 1. Limiting worse case condition is LHSI pump at shutoff condition. Required horsepower will be approximately 270 BHP. At flows below approximately 2300 GPM the required horsepower is greater than 250 BHP, The 250 BHP motor has a 1.15 service factor. This results in an "Equivalent 11 horsepower rating of 250 x 1.15 = 287 .5. Normal flow will be approximately 3500 GPM (240 BHP) Runout of the pump is a less severe condition. Reference calculation 518.53.01 1129. Pume Configuration Runout Flows BHP 1 LHSI + 1 HHSI (P. 6 of 18) 180' @ 4100 GPM 240 BHP 1 LHSI + 2 HHSI (p. 12 of 18) 176' @ 4200 GPM 240 BHP 2 LHSI + 2 HHSI (P. 16 of 18) 250' @ 2600 GPM 240 BHP Two pumps running with one pump trip will result in a small horsepower decrease on the energized pump. Initial start on an empty system will require approximately 240 BHP, 11 Worst reasonable 11 case is the LHSI pump on minimum recirculation flow. Worst Case BHP = 270 BHP
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e Outside Recirculation Spray - O.R.S Reference flow diagram FM 101A and Figure 3. The O.R.S. pump is similar to the C.S. pump and unlike the L.H.S.I. pump as it has a rising horsepower curve with increased flow. At shutoff condition the required horsepower is 240 BHP Per calculation 12496.25 #21 normal flow for each pump is 3450 GPM. This flow requires 280 BHP. Loss of 1 pump will have no effect on the other pump as each pump discharges through its own heat exchanger and individual spray header. Worst case (for horsepower required) will be during runout conditions that will occur when the pump starts and fills suction and discharge piping. Reference calculation 12846.25 #21 runout up to 5000 GPM will occur for a limited period (less than 65 seconds) during pump start. This flow requires 300 BHP. Also refer calculation 12846 .11 1fo 5.
- Worst case BHP= 300 HP
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2.0 .Electrical Analysis This analysis investigates the electrical load on 480V safety buses as a result of the mechanical system demand calculated in Section 1.0. 480V load centers lH and lJ feed the pump motors as listed below. lH lJ Containment Spray Pump 1-CS-P-lA 1-CS-P-lB Inside Recirc. Spray Pump 1-RS-P-lA 1-RS-P-lB outside Recirc. Spray Pump 1-Rs-p:..2A l-RS-P-2B Low Head Safety Injection Pump 1-SI-P-lA 1-SI-P-lB Heaviest load on these electrical buses occurs when all pumps are running during loss of coolant accident conditions. Worst case load would occur with all pumps running and demanding highest brake horsepower due to mechanical system parameters (such as runout or shutoff head conditions.). From the mechanical system results of section I.O maximum pump brake horesepower demand is summarized below. Corresponding electrical load to supply this brake horsepower is also listed. Worse Case Cores ponding BUS lH BHP KVA Containment Spray Pump 1-CS-P-lA 220 197. 7 Inside RS Pump 1-RS-P-lA 270 248.1 Outside RS Pump l-RS-P-2A 300 275.7 Low Head Safety Injection 1-SI-P-lA 270 240.9 Pump Total 962.4 BUS lJ Containment Spray Pump 1-CS-P-lB 220 197.7 Inside RS Pump 1-RS-P-lB 260 238.9 Outside RS Pump l-RS-P-2B 300 275.7 Low Head Safety Injection 1-SI-P-lB 270 240.9 Pump Total 953.2 Summary Load centers lH and lJ are rated 1000 KVA self cooled, and 1333 KVA fan cooled. The highest demands as tabulated above are within the self cooled load centers rating for worst case mechanical system demand.
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