ML043570508

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E-mail Ward, NRR, to Daflucas, Entergy, RELAP5 Verrmont Yankee Input Deck, First 11 Pages to Help Identify the Deck
ML043570508
Person / Time
Site: Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date: 07/08/2004
From: Ward L
Office of Nuclear Reactor Regulation
To: Daflucas R
Entergy Nuclear Northeast
References
Download: ML043570508 (15)
v • d • e


Text

Richard Lobel - RELAP5 Vermonot Yankee Iniput Deck Page, f Richard Lobel - RELAP5 Vermont Yankee InDut Deck Paae ii From:

Leonard Ward To:

rdafluc~entergy.com Date:

7/8/04 11:54AM

Subject:

RELAP5 Verrmont Yankee Input Deck Attached are the initial pages to the Vermont Yankee RELAP5 input decks for the steady state initialization and transient runs.

Hopefully there's enough information to identify the full decks. The email system will not allow transmital of large files.

Thanks, Len ward Dr. Leonard W. Ward, Ph.D.

US Nuclear Regulatory Commission NRR/DSSA/SRXB MS 010-B3 Washington, DC 20555-0001 Work (301) 415-2866 Fax (301) 415-3577 CC:

Richard Lobel

c.\\temp\\GW)00001.TMP Page 1 i c:\\temp\\GW}OQO0i.TMP Page 1]

Mail Envelope Properties (40ED6E34.CC9 :4: 37816)

Subject:

Creation Date:

From:

Created By:

RELAP5 Vermont Yankee Input Deck 7/8/04 11:54AM Leonard Ward LWW@nrc.gov Recipients entergy.com rdafluc (rdafluc@entergy.com) nrc.gov owf2_po.OWFNDO RML CC (Richard Lobel)

Post Office owf2_po.OWFNDO Route entergy.com nrc.gov Files MESSAGE VYR5LOCAtran.i VYR5LOCAss.i Options Expiration Date:

Priority:

Reply Requested:

Return Notification:

Concealed

Subject:

Security:

Size 1356 10752 49664 Date & Time 07/08/04 11:54AM 07/08/04 11:49AM 07/08/04 11:42AM

. i I None Standard No None No Standard

Richard Lobel - VYR5LOCAtran.i Page 1

=

r5m8gbe6 -

vyloca 0.6 ft2 dis. llpcs +llpci

  • W.K.Hughey, Entergy to NRC, July 14, 1999
  • INEEL developed a RELAP/SCDAP deck from this input wlj THIS DECK REPRESENTS THE VY BASE DECK TO BE USED FOR LOCA ANALYSES AND IS BASED ON CALCULATION VYC -

937 INITIAL CONDITIONS:

NOMINAL FOR 1698.3 MWTH WATER LEVEL ABOVE TOEF

=

162.34 IN DOME PRESSURE

=

1024.0 PSIA CORE POWER

=

1593.13 MWT FEEDWATER TEMPERATURE

=

373.13 F FEEDWATER FLOW

=

1873 LBM/SEC MAINSTEAM FLOW

=

1873 LBM/SEC RECIRC PUMP SPEED

=

1670 RPM CORE FLOW

=

13300 LBM/SEC COSINE POWER SHAPE AND CONSERVATIVE PEAKING ACCIDENT CONDITIONS ASSUMED:

1. BREAK IS ASSUMED TO OCCUR 4.OE-6 SECONDS IN DRYWELL
2.

LOSS OF AUXILIARY POWER OCCURS AT 4.OE-6 SECONDS.

3. REACTOR SCRAMS'S AFTER 1.8 SEC DELAY FROM FIRST RPS SIGNAL.

(EXCEPT HIGH DRYWELL PRESSURE)

SCRAM CURVE 67B OF VYNPS TECHS SPECS IS USED

  • 4. FEEDWATER COASTS DOWN TO 0.0 LBMISEC AT 4.5 SECONDS.
5. MSIV'S CLOSE IN 3.0 SECONDS AFTER ISOLATION SIGNAL PLUS 0.5 SECOND DELAY.
6. RECIRC PUMPS IN A & B LOOPS COAST DOWN WITH LOSS OF OUTSIDE POWER(FREEWHEELING)
7. ADS MAY ACTUATE IF APPROPRIATE SIGNALS EXIST. THEREAFTER, ADS

I Richard Lobel - VYR5LOCAtran.i Pal I Richard Lobel - VYR5LOCAtran.i Pa CYCLES OPENICLOSE AT 12 PSID BETWEEN STEAMLINE AND DRYWELL WHEN ADS CRITERIA ARE CURRENTLY MET AT ANY TIME.

  • 9. RCIC SYSTEM IS NOT AVAILABLE (ASSUMPTION).
10. HPSI SYSTEM IS NOT AVAILABLE (SINGLE FAILURE)
11. THE RECIRC. DISCHARGE VALVE IN THE BROKEN LOOP DOES NOT CLOSE.
12. THE RECIRC. DISCHARGE VALVE IN THE INTACT LOOP CLOSES ON DEMAND.
13. THE LPCI SYSTEM IN THE BROKEN LOOP FAILS DUE TO BREAK.
  • 14. THE LPCI IN THE INTACT LOOP INJECTS UPON DEMAND.
  • 15. CONTAINMENT PRESSURE IS SET AT 14.7 PSIA AND 165.0.DEGF
  • 16. EM POINT REACTOR KINETICS INITIALLY AT 1698.3 MWTH.
  • 17. EM CORE HEAT TRANSFER.
  • 18. PASSIVE HEAT STRUCTURES ARE INCLUDED.

100 new transnt 101 run 102 british british

  • 105 4.0 5.0
  • 109 40 40 4 4 695 110 nitrogen 201 4.0e-6 1.0e-6 1.0e-6 00003 4 4 4

202 10.0 1.0e-6 0.002 00003 500 5000 5000 203 400.0 1.0e-6 0.01 00003 100 2000020000

Richard Lobel - VYR5LOCAss.i Page 1

= r5m8gstd - vyloca steady-state

  • W.K.Hughey, Entergy to NRC, July 14, 1999
  • Vermont Yankee transient THIS DECK REPRESENTS THE VY BASE DECK TO BE USED FOR LOCA ANALYSES AND IS BASED ON CALCULATION VYC -

937 INITIAL CONDITIONS:

NOMINAL FOR 1698.3 MWTH WATER LEVEL ABOVE TOEF DOME PRESSURE CORE POWER FEEDWATER TEMPERATURE FEEDWATER FLOW MAINSTEAN FLOW

=

162.34 IN

=

1024.0 PSIA

=

1593.13 MWT

=

373.13 F 1873 LBM/SEC

=

1873 LBM/SEC RECIRC PUMP SPEED

=

1670 RPM CORE FLOW

=

13300 LBM/SEC COSINE POWER SHAPE AND CONSERVATIVE PEAKING ACCIDENT CONDITIONS ASSUMED:

1.

BREAK IS ASSUMED TO OCCUR 4.OE-6 SECONDS IN DRYWELL

2.

LOSS OF AUXILIARY POWER OCCURS AT 4.OE-6 SECONDS.

3.

REACTOR SCRAMS'S AFTER 1.8 SEC DELAY FROM FIRST RPS SIGNAL.

(EXCEPT HIGH DRYWELL PRESSURE)

SCRAM CURVE 67B OF VYNPS TECHS SPECS IS USED

4.

FEEDWATER COASTS DOWN TO 0.0 LBM/SEC AT 4.5 SECONDS.

5. MSIV'S CLOSE IN 3.0 SECONDS AFTER ISOLATION SIGNAL PLUS 0.5 SECOND DELAY.

I Richard Lobel - VYR5LOCAss.i Page 2 1 6.

7.

8.

9.

10.

11.

12.

DEMAND.

13.

14.

15.

16.

17.

18.

RECIRC PUMPS IN A & B LOOPS COAST DOWN WITH LOSS OF OUTSIDE POWER (FREEWHEELING)

ADS MAY ACTUATE IF APPROPRIATE SIGNALS EXIST.

THEREAFTER, ADS CYCLES OPEN/CLOSE AT 12 PSID BETWEEN STEAMLINE AND DRYWELL WHEN ADS CRITERIA ARE CURRENTLY MET AT ANY TIME.

ECCS OPERABILITY VARIES WITH EVERY CASE.

RCIC SYSTEM IS NOT AVAILABLE (ASSUMPTION).

HPSI SYSTEM IS NOT AVAILABLE (SINGLE FAILURE)

THE RECIRC. DISCHARGE VALVE IN THE BROKEN LOOP DOES NOT CLOSE.

THE RECIRC. DISCHARGE VALVE IN THE INTACT LOOP CLOSES ON THE LPCI SYSTEM IN THE BROKEN LOOP FAILS DUE TO BREAK.

THE LPCI IN THE INTACT LOOP INJECTS UPON DEMAND.

CONTAINMENT PRESSURE IS SET AT 14.7 PSIA AND 165.0.DEGF EM POINT REACTOR KINETICS INITIALLY AT 1698.3 MWTH.

EM CORE HEAT TRANSFER.

PASSIVE HEAT STRUCTURES ARE INCLUDED.

100 101 102

  • 105
  • 109 110 201 202 203 301 302 303 304 305 310 311 312 313 314 315 316 317 new transnt run british british 4.0 5.0 40 40 4 4

6!

nitrogen 4.Oe-6 1.Oe-6 1.Oe-6 10.0 1.Oe-6 0.002 400.0 1.Oe-6 0.01 rktpow 0

rkreac 0

cntrlvar 804 p

240010000 p

540010000 mflowj 401000000 mflowj 549000000 pmpvel 310 pmpvel 360 mflowj 326010000 mflowj 376010000 mflowj 343000000 mflowj 393000000.

i95 00003 00003 00003 4

4 4

500 5000 5000 100 20000 20000

  • total core power
  • net reactivity
  • core average void fraction
  • rpv pressure
  • main steamline pressure
  • turbine inlet flowrate
  • pump speed loop a
  • pump speed loop b
  • recirc loop a flow rate
  • recirc loop b flow rate
  • jetpump bank a flowrate
  • jetpump bank b flowrate

I Richard Lobel - VYR5LOCAss.i Paa 318 cntrlvar 101

  • total core+bypass flowrate 319 mflowj 100010000
  • bypass inlet flowrate 320 mflowj 120020000
  • lobndl inlet flowrate 321 mflowj 140020000
  • avbndl inlet flowrate 322 mflowj 160020000
  • hibndl inlet flowrate 323 cntrlvar 100
  • total core inlet flowrate 324 mflowj 109000000
  • bypass outlet flowrate 325 mflowj 129000000
  • lobndl outlet flowrate 326 mflowj 149000000
  • avbndl outlet flowrate 327 mflowj 169000000
  • hibndl outlet flowrate 328 mflowj 541000000
  • msiv flowrate 330 mflowj 551000000
  • s/rvl flowrate 331 mflowj 553000000
  • s/rv23 flowrate 332 mflowj 555000000
  • s/rv4 flowrate 333 mflowj 559000000
  • ads flowrate 335 mflowj 802000000
  • break j-802 flowrate
  • 336 mflowj 801000000
  • break j-801 flowrate 337 mflowj 701000000
  • hpci pump flowrate 338 mflowj 721000000
  • lpcs (1) flowrate 353 cntrlvar 901
  • net inflow to primary system 354 cntrlvar 903
  • primary system mass 355 cntrlvar 003
  • anrlvl 359 cntrlvar 012
  • awrlvl 363 cntrlvar 676
  • bilvlcl 364 sattemp 206010000
  • upper plenum sat temp 365 httemp 122100506
  • lobndl temp axnode 5 366 httemp 142100306
  • avbndl temp axnode 3 367 httemp 142100506
  • avbndl temp axnode 5 368 httemp 162100306
  • hibndl temp axnode 3 369 httemp 162100406
  • hibndl temp axnode 4 370 httemp 162100506
  • hibndl temp axnode 5 371 httemp 162100606
  • hibndl temp axnode 6 372 httemp 162100706
  • hibndl temp axnode 7 373 httemp 163100306
  • hirddl temp axnode 3 374 httemp 163100406
  • hirddl temp axnode 4 375 httemp 163100506
  • hirddl temp axnode 5 376 httemp 163100606
  • hirddl temp axnode 6 377 httemp 163100706
  • hirddl temp axnode 7 393 cntrlvar 990
  • total mass TRIPS ACCIDENT INITIATION AND GENERAL TRIPS ACCIDENT TIME = 4.OE-6 SECONDS FOR LOCA BE AND EM DECKS LOSS OF OFFSITE POWER = 4.OE-6 SECONDS FOR LOCA BE AND EM DECKS TRIP 501: IS TIME LT ACCIDENT TIME ?

TRIP 502: IS TIME GE ACCIDENT TIME ?

TRIP 503: IS TIME GT 1.OE+06 SECONDS ? ALWAYS FALSE.

501 time 0

lt null 0

4.Oe+6 n

0.0 502 time 0

ge null 0

4.Oe+6 1

S Richard Lobel - VYR5LOCAss.i Page 41 503 time 0

gt null 0

1.Oe+6 n

REACTOR SCRAM SIGNALS AND TRIPS SEC TRIP 510: SCRAM ON RPS MG SET UNDERFREQUENCY LESS THAN 57 HZ AT 3.0 TRIP 511:

AFTER LOSS OF OFFSITE POWER.

SCRAM ON HIGH DRYWELL PRESSURE GE TO 2.5 PSIG (OCCURED AT 3.00 SEC-CONSERVATIVE ASSUMPTION)

SCRAM ON RPV LEVEL LE 127 INCHES (LO LEVEL)

ABOVE TOP OF ENRICHED FUEL AT 351.5 INCHES. (LEVEL SCRAM AT 125.0-TRIP 512:

CONSERVATIVE)

TRIP 513:

TRIP 514:

SCRAM ON SCRAM ON WITH 1.0 RPV PRESSURE ABOVE 1069.7 PSIA (1055 PSIG).

MSIV CLOSURE @ 10% CLOSED (90% MSIV OPENED)

SEC DELAY TO REACH 10% CLOSED (IE 100% CLOSED IN 10.0 TRIP ACCIDENT SECONDS) FROM TRIPS 529 AND 531.

614: DETERMINE IF & WHEN ANY SCRAM SIGNAL HAS OCCURRED AFTER AFTEI INITIATION; THEN TRIP 515: INITIATES CONTROL ROD INSERTION WITH 1.8 SEC. DELAY.

TRIP 516: INITIATES TURBINE STOP VALVE (J549) CLOSURE 20.0 SEC REACTOR SCRAM (TRIP 614).

TRIP 616: IS TRIP 511 OR TRIP 516 TRUE ?

TRIP 517: IS TIME GE TIMEOF TRIP 616 PLUS 0.4 SEC ?

IF SO, RAMP TURBINE STOP VALVES CLOSED IN 0.1 SEC.

TRIP 518: INITIATES TURBINE BYPASS VALVE OPENING 0.1 SECONDS AFTER TRIP 517 (JNCTN 571) 510 time 0

511 time 0

512 513 514 610 611 612 613 515 614 cntrlvar p

time 2400:

ge timeof ge 003 le LOO1 O

ge 0

ge 502 null null null timeof 3.5 0

1 3.00 1

0 125.0 0 1069.7 531 1.0 n

n 1

512 610 611 612 time 0 515 or or or and ge or 513 514 511 502 timeof 613 510 n

n n

n 1.8 1 n

  • TURBINE STOP AND BYPASS VALVE 516 616 517 518 time 0 511 time 0 time 0 ge timeof 614 or 516 ge timeof 616 ge timeof 517 20.0 1

1 0.5 1 0.1 1

MAIN STEAM ISOLATION VALVE CLOSURE TRIP 510: RPS MG SET UNDERFREQUENCY SIGNAL

Richard Lobel - VYR5LOCAss.i Page 5766 TRIP TRIP TRIP TRIP TRIP TRIP TRIP 529:

530:

630:

631:

632:

531:

633 :

HI MAIN4 STEAMLINE FLOW (140 % RATED) IN J546-01.

RPV LEVEL LE 80.0 INCHES (ACTUAL LO LO LEVEL SETPNT)

PREVENTS CLOSURE ON LO LO LEVEL PRIOR TO ACCIDENT SELECTS TRIP 510 OR 630 AS VALID SIGNAL SELECTS TRIP 529 OR 631 AS VALID SIGNAL 1.8 SECOND DELAY FOR INSTRUMENT AND LOGIC CIRCUITS LATCH HI MAIN STEAMLINE FLOW SIGNAL FOR HPCI AND RCIC ISOLATION 529 mf l 530 cnti 630 631 recirc lin 632 main steam Dwj 546010000 clvar 003 530 630 ge le and or null null 502 510 o

2500.56 0

80.0 n

n n

n

  • use for n
  • use for 631 or 529 531 time 0

ge timeof 632 1.8 1

633 529 and 529 1

RECIRC PUMP MOTOR TRIP (This logic not used; pumps trip due to LOOP-TRIP 5 TRIP 540: RPM TRIP ON HIGH RPV PRESSURE GE 1164.7 PSIA (1150 PSIG)

TRIP 541: 0.3 SECOND DELAY ADDED TO TRIP 540 FOR CIRCUITS TRIP 542: 10.3 SECOND DELAY ADDED TO TRIP 630 (LO LO LEVEL)

TRIP 543: TRIP ON RECIRC LOOP MG-SET UNDERFREQUENCY 17.0 SECONDS AFTER LOSS OF OFFSITE POWER.

TRIP 642: SELECTS TRIP 541 OR TRIP 542 AS VALID SIGNAL

    • TRIP 643: SELECTS TRIP 543 OR TRIP 642 AS VALID SIGNAL TRIP 644: USE PUMP VELOCITY TABLE 540

.541 542 543 642 643 644 p

time time time 240010000 0

0 0

541 543

-643 ge null ge timeof ge timeof ge timeof or 542 or 642 or

-643 0

540 630 502 1164.7 1

1.8 11.8 17.0 1

1 1

1 1

n RECIRC LOOP DISCHARGE VALVE CLOSURE NOTE: POWER IS FROM AN UNINTERUPTIBLE POWER SUPPLY NOTE:

ASSUME THE UPS FAILS;THE RECIRC LOOP DISCHARGE VALVES FAIL TO CLOSE IN BOTH LOOPS TRIP 646: SELECTS TRIP 511 ( HI DW PRESS) OR TRIP 630 (LO LO LEVEL)

TRIP 546: 2.00 SECOND DELAY ADDED TO TRIP 646 FOR CIRCUITS TRIP 547: RPV PRESSURE LT OPEN PERMISSIVE C 315 PSIA)

TRIP 647: TRIP 546 AND TRIP 547 MUST BE TRUE FOR THE RLDV TRIP 646 546 547 647 time p

511 0

240010000 546 or ge le and 630 timeof 646 null 0

547 2.00 315.0 n

1 1

1 AUTOMATIC DEPRESSURIZATION SYSTEM

I Richard Lobel - VYR5LOCAss.i Pac ADS ACTUATION CONDITIONS TRIP 511:

TRIP 550:

TRIP 650:

TRIP 551:

AFTER TRIP 651:

TRIP 694:

TRIP 652:

EXISTS.

TRIP 552:

TRIP 653:

AUTOMATICALLY.

WAS HIGH DRYWELL PRESSURE (17.2 PSIA) EXCEEDED ?

IS RPV LEVEL CURRENTLY BELOW LO LO LEVEL (80.0 INCHES)

?

ARE TRIPS 511 AND 550 BOTH TRUE?

THEN LO LO LEVEL AND HI DRYWELL PRESSURE SIGNALS COEXISTED AT LAST TIME STEP.

122.0 SECOND DELAY (120 SEC TIMER, 2.0 CIRCUITS)

REQUIRED TRIP 650 (TESTED AT LAST TIME STEP)

IS TRUE PRIOR TO ADS.

ARE BOTH TRIPS 551 AND 650 CURRENTLY TRUE ?

IS AT LEAST ONE LO PRESSURE ECC PUMP RUNNING ?

ARE TRIPS 651 AND 694 BOTH TRUE? THEN VALID ADS SIGNAL IS MAIN STEAMLINE PRESSURE SUFFICIENTLY HIGH,114.7 PSIA TO OPEN PILOTS ON SRV'S?

IF BOTH TRIP 552 AND 652 ARE TRUE, THEN OPEN ADS TRIP 554: IS TIME GE TO MANUAL ADS ACTUATION TIME ?

TRIP 654: IF TRIPS 552 AND 554 ARE BOTH TRUE, THEN OPERATORS MANUALLY OPEN ADS VALVES.

TRIP 655: IF TRIP 653 OR 654 IS TRUE, THEN OPEN ADS VALVES.

OTHERWISE, MAINTAIN OR TRIP ADS VALVES CLOSED.

550 cntrlvar 003 lt null 0

80.0 n

650 511 and 550 n

551 time 0

ge timeof 650 122.0 1

651 551 and 650 1

652 651 and 694 1

552 p

240010000 ge null 0

114.7 n

553 p

240010000 le null 0

64.7 n

  • close ads v.

653 552 and 652 n

  • criteria fo:

alves r auto ads 554 time 0

ge timeof 550 602.0 n

654 552 and 554 n

  • criteria for manual ads 655 653 or 654 n
  • ramp ads open (manual or WHEN 560 561 566 660 661 SAFETY/RELIEF VALVE 1 S/RV1 OPENS AT 1080.0 PSID ABOVE DRYWELL AND ADS IS OFF S/RV1 CLOSES AT (0.97)*(1080 PSIG)= 1047.6 PSID ABOVE DRYWELL OR ADS (SEPARATE JUNCTION) OPENS.

p 544010000 ge p 614010000 1080.0 n

p 544010000 le p 614010000 1047.6 n

time 0

ge timeof 560 0.4 n

566 and

-655 n

561 or 655 n

SAFETY/RELIEF VALVES 2 AND 3 S/RV23 OPENS AT 1090.0 PSID ABOVE DRYWELL AND ADS IS OFF S/RV23 CLOSES AT (0.97)(1090 PSID)= 1057.3 PSID ABOVE DRYWELL OR

Richard Lobel -VYR5LOCAss.i Page 71 WHEN 562 563 567 662 663 WHEN 564 565 568 664 665
  • 56
  • 566
  • 567 ADS (SEPARATE JUNCTION) OPENS.

p 544010000 ge p 614010000 1090.0 n

p 544010000 le p 614010000 1057.3 n

time 0

ge timeof 562 0.4 n

567 and

-655 n

563 or 655 n

SAFETY/RELIEF VALVE 4 S/RV4 OPENS AT 1100.0 PSID ABOVE DRYWELL AND ADS IS S/RV4 CLOSES AT (0.97) (1100 PSID)= 1067.0 PSID ABOVE ADS OPENS.

OFF DRYWELL OR p

544010000 ge p 614010000 1100.0 n

p 544010000 le p 614010000 1067.0 n

time 0

ge timeof 564 0.4 n

568 and

-655 n

565 or 655 n

SAFETY VALVES 1 AND 2 (CURRENTLY DEACTIVATED)

SV12 OPENS AT 1240.0 PSID ABOVE DRYWELL SV12 CLOSES AT (.97) (1240 PSID) = 1202.8 PSID ABOVE DRYWELL P

544010000 GE P 614010000 1240.0 N

P 544010000 LE P 614010000 1202.8 N

~*

HIGH PRESSURE COOLANT INJECTION (HPCI) SYSTEM CRITERIA TO CONTROL HPCI INJECTION ON BISTABLE RPV LEVEL TRIP 571: IS MAIN STEAM LINE PRESSURE GT 90 PSIA ?

(70 PSIG TECH SPEC + 15 PSIA ATM + 5 PSI UNCERTAINTY = 90 PSIA) I TRIP 572: IS RPV LEVEL LT BISTABLE LEVEL (CNTRLVAR 676 ) ?

TRIP 671: ARE BOTH TRIP 571 AND 572 TRUE ?

CRITERIA TO INITIATE HPCI INJECTION ON HI DRYWELL PRESSURE FOR FIRST TIME.

AFTER FIRST INITIATION, HI DRYWELL PRESSURE SEALS IN BUT IS OVERRIDDEN BY RPV LEVEL, MAIN STEAMLINE PRESSURE AND HI MAIN STEAMLINE FLOW SIGNALS.

TRIP 511: IS DRYWELL PRESSURE GE 17.2 PSIA ?

TRIP 672: ARE BOTH TRIP 511 AND TRIP 571 TRUE ?

TRIP 673: HAS HPCI EVER BEEN INITIATED DURING THIS CASE ?

TRIP 674: HPCI READY TO INJECT FOR FIRST TIME ON HIGH DRYWELL PRESSURE SIGNAL FINAL HPCI INJECTION SIGNALS AT EACH TIME STEP TRIP 675: IS TRIP 671 OR TRIP 674 TRUE ?

TRIP 676: ARE TRIPS 675 AND -633 BOTH TRUE ? IF SO,THEN HPCI STARTS UP OR CONTINUES TO INJECT.

TRIP 573: IF HPCI ECC INJECTION STARTS,THEN START HPCI

Richard Lobel - VYR5LOCAss.i Page 8 STEAM TURBINE FLOW.

571 p

544010000 gt null 0

90.0 n

572 cntrlvar 003 it cntrlvar 676 0.0 n

671 571 and 572 n

672 511 and 571 n

673 676 and 676 1

674 672 and

-673 n

675 671 or 674 n

676 675 and

-633 n

  • hpci pump startup or on 573 mflowj 701000000 gt null 0

0.0 n

NOTE:

THE RCIC ACTUATION AND TERMINATION LOGIC IS VERY SIMILAR TO THE HPCI LOGIC EXCEPT RCIC DOES NOT ACTUATE ON HIGH DRYWELL PRESSURE.

THUS, MANY OF THE HPCI TRIP SIGNALS ARE USED TO AVOID REDUNDANCY.

THESE TRIPS MEAN THE FOLLOWING FOR RCIC:

CRITERIA TO CONTROL RCIC INJECTION ON BISTABLE RPV LEVEL TRIP 571: IS MAIN STEAM LINE PRESSURE GT 90 PSIA ?

TRIP 572:

IS RPV LEVEL LT BISTABLE LEVEL (CNTRLVAR 676 ) ?

TRIP 671: ARE BOTH TRIP 571 AND 572 TRUE ?

FINAL RCIC INJECTION SIGNALS AT EACH TIME STEP TRIP 677: ARE TRIPS 671 AND -633 BOTH TRUE ? IF SO,THEN RCIC STARTS UP OR CONTINUES TO INJECT.

TRIP 574:

IF RCIC ECC INJECTION STARTS. THEN START RCIC STEAM TURBINE FLOW.

  • 571 P

544010000 GT NULL 0

90.0 N

  • 572 CNTRLVAR 003 LT CNTRLVAR 676 0.0 N
  • 671 571 AND 572 N
  • 677 671 AND

-633 N

  • 574 MFLOWJ 711000000 GT NULL 0 0.0 N

SYSTEMS CRITERIA FOR LPCS PUMPS TO REACH RATED SPEED TRIP 511: IS HIGH DRYWELL PRESSURE (17.2 PSIA) EXCEEDED ?

IRichard Lobel - VYR5LOCAssA iPage TRIP 530: IS RPV LEVEL LE LO LO LEVEL (80.0 INCHES WRT TOEF) ?

TRIP 630: PREVENTS LO LO LEVEL SIGNAL PRIOR TO ACCIDENT.

TRIP 547: IS RPV PRESSURE LE LO RPV PRESSURE (315.0 PSIA) ?

TRIP 680: VALID LO LO LEVEL WITHR ACCIDENT INITIATION SIGNAL VALID TRIP 681: DOES A VALID LPCS INITIATION SIGNAL EXIST ?

TRIP 580: ADD 2.0 SEC DELAY ON EITHER LEVEL OR PRESSURE READINGS.

TRIP 581: DID THE LPCS INITIATION SIGNAL OCCUR PRIOR TO THE EARLIEST TIME ALLOWED FOR LPCS PUMP START UP ?

TRIP 582: IS THE CURRENT TIME GE TO THE EARLIEST TIME ALLOWED FOR THE LPCS PUMPS TO BE AT RATED SPEED ?

TRIP 682: IF BOTH TRIP 581 AND TRIP 582 ARE TRUE, THEN THE LPCS PUMPS ARE AT RATED SPEED.

TRIP 583: IF TRIP 581 IS FALSE, THEN IS THE CURRENT TIME GE TO THE TIME AND THAT A VALID LPCS INITIATION SIGNAL OCCURRED PLUS A 5.4 SEC TRIP 683:

DELAY (2.0 SEC CIRCUIT DELAY AND 5.0 SEC PUMP STARTUP)

TRIP 684: IF EITHER TRIP 682 OR 683 IS TRUE, THEN THE LPCS PUMPS ARE AT RATED SPEED.

CRITERIA FOR LPCS MOTOR OPERATED DISCHARGE VALVES TO OPEN

  • v TRIP 584: IS TIME GE TIME OF TRIP 502 + 13.0 SECONDS, IE IS POWER AVAILABLE ON THE EM BUSES?

TRIP 685: ARE BOTH TRIP 584 AND TRIP 681 TRUE?

TRIP 686: ARE BOTH TRIP 547 AND TRIP 685 ARE TRUE?

TRIP 586: IF TIME IS GE TO TIME OF TRIP 686 PLUS 11.

SEC.

(2.0 CIRCUITS,9.0 VALVE OPEN), THEN THE LPCS INJECTION VALVE IS FULL OPEN.

CRITERIA FOR LPCS READY FOR INJECTION (SUBJECT TO PRESSURE VS FLOW CHARACTERISTICS).

TRIP 687: IF BOTH TRIP 684 AND 586 ARE TRUE, THEN INJECT LPCS SYSTEM LPCS IS READY TO 680 681 580 581 582 682 583 683 684 time timeof time time 547 511 0

580 0

581 0

583 682 0

584 547 0

and or ge le ge and ge and or ge and and ge 630 680 timeof timeof timeof 582 timeof

-581 683 timeof 681 685 timeof 681 502 502 580 2.0 23.0 28.0 5.0 1

1 1

1 1

1 1

1 1

1 1

1 1

1

  • lpcs starts 584 time 685 686 586 time 687 injecting 502 13.0 686 11.0 684 and 586

Richard Lobel - VYR5LOCAss.i Page 10 LOW PRESSURE COOLANT INJECTION (LPCI)

SYSTEMS CRITERIA FOR LPCI PUMPS TO REACH RATED SPEED.

THE LPCI INITIATION SIGNALS ARE THE SAME AS THE LPCS INITIATION

SIGNALS, ALTHOUGH SEPARATE INSTRUMENTS AND LOGIC CIRCUITS ARE USED.

THUS TRIP 681 IS USED AND MEANS THE FOLLOWING FOR LPCI:

TRIP 681: DOES A VALID LPCI INITIATION SIGNAL EXIST ?

TRIP 588: DID THE LPCI INITIATION SIGNAL OCCUR PRIOR TO POWER AVAILABLE TRIP TRIP TRIP TIME AND 12.10 SEC TRIP START UP TRIP PUMPS CRITE

  • ~

TRIP

-INJECTION OCCURRED

CIRCUITS, TRIP INJECTION 589: IS 689: IF 590: IF 690:

ON THE EMERGENCY BUSES ?

THE CURRENT TIME GE TO THE EARLIEST TIME ALLOWED FOR ALL LPCI PUMPS TO BE AT RATED SPEED ?

TRIPS 588 AND 589 ARE BOTH TRUE, THEN ALL LPCI PUMPS ARE AT RATED SPEED AT THEIR EARLIEST TIME.

TRIP 588 IS

FALSE, THEN IS THE CURRENT TIME GE TO THE THAT A VALID LPCI INITIATION SIGNAL OCCURRED PLUS A DELAY (2.10 SEC CIRCUIT, 10.0 SEC FOR SEQUENTIAL PUMP 691: IF EITHER TRIP 689 OR TRIP 690 IS TRUE, THEN THE LPCI ARE AT RATED SPEED.
RIA FOR LPCI MOTOR OPERATED INJECTION VALVES TO OPEN.

592: IS THE CURRENT TIME GE TO THE TIME NEEDED TO OPEN THE VALVES AFTER THE LOW RPV PRESSURE SIGNAL (TRIP 547)

IE TRIP 547 TIME PLUS 26.10 SEC DELAY (2.10 SEC 24.0 SECOND VALVE OPENING TIME) ?

692: IF TRIP 681 AND TRIP 592 ARE BOTH TRUE, THEN THE VALVES SHOULD BE OPEN.

RIA FOR LPCI READY FOR INJECTION (SUBJECT TO LPCI SYSTEM
SURE VS FLOW CHARACTERISTICS) 693
IF TRIP 691 AND 692 ARE BOTH TRUE, THEN LPCI IS READY TO 694: IF TRIP 684 OR TRIP 691 IS TRUE, THEN AT LEAST ONE LOW ECC PUMP IS AT RATED SPEED FOR THE ADS CRITERIA.

695: IF TRIP 687 OR TRIP 693 IS

TRUE, THEN THE REWET/QUENCH IS TRUE FOR AN EM ANALYSIS.

CRITE PRES TRIP INJECT.

TRIP PRESSURE TRIP TRIP 588 tin 589 tin 689 590 tin 690 691 are star

,eof 580

,ie 0

588 ie 0

590 689 le ge and ge and or timeof timeof 589 timeof

-588 690 502 502 580 13.00 1

23.0 1

1 10.00 1

1 1

  • the lpci pumps

Richard Lobel - VYR5LOCAssi Page 1 593 time 0

ge timeof 547 2.10 1

696 546 and 593 1

  • open lpci injection val
  • The following trips are used for the ADS opening criteria
  • 592 time 0

ge timeof 547 26.1 1

692 592 and 681 1

693 691 and 692 1

694 684 or 691 1

  • one lp pump is running
  • The following trip activates the rewet-quench model
  • 695 687 or 693 1
  • lpci/lpcs inejecting HYDRODYNAMIC COMPONENT DATA LOWER PLENUM REGION 0020000 loplnvO2 snglvol 0020101 0.0 3.516 248.24 0.0 90.0 0020102 3.516 1.500e-4 1.827 00000 0020200 000 1099.6 515.32 1105.81 0.
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