ML20046C142

Rev 12 to Response to Loss of Secondary Heat Sink

ML20046C142
Person / Time
Site:	Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png
Issue date:	07/09/1993
From:	CONNECTICUT YANKEE ATOMIC POWER CO.
To:
References
FR-H.1, NUDOCS 9308090244
Download: ML20046C142 (32)

Text

{{#Wiki_filter:f /, 1 Connecticut Yankee Atomic Power Company Date of Distribution: 07n8/93 Notice of Receipt of: Plant Procedure EOP 3.1 Change No: g To: L. BETTEN11AUSEN,DRS USNRC Copy No.: COPY NO. 95 Please revise your Controlled Copy per instructions listed below: REPLACE: Plant Procedure EOP 3.1-0, Section FR-H.1, Rev.12, dated 07/09/93 C_) l I have read and am aware of the provisions of the above listed documents. This acknowledges receipt of the revisions listed above. In addition, all superseded pages have been removed and destroyed. Signature: Date: Please Return This Sheet to the Mailroom Clerk, Connecticut Yankee Within Thirty (30) Days. [t Refererce- ~ ~ ACP 1.2-6.1 g (Emergency Plan Pmcedures) Rev.15 I 10CFR50.4 (b)(5) OOOOC" (] p 930B090244 930709 A i {ua PDR ADOCK 05000213 'i P PDR

B,,_- JUL 0 91993 NUMBER TITLE REV. ISSUE /DA~E l FR-il.1 RESPONSE TO LOSS OF SECONDARY Rev. 12 i IIEAT SINK j v A. PURPOSE This procedure provides actions to respond to a loss of secondary heat sink in all steam l generators. II. SYMPTOMS OR ENTRY CONDITIONS 3 This procedure is entered from: l 1. E-0, REACTOR TRIP OR SAFETY INJECTION, Step 15, when minimum AFW flow in not verified AND narrow range level in all SGs is less than 6 % ( l8 % FOR ADVERSE CONTAINMENT). 2. F-0.3, HEAT SINK Critical Safety Function Status Tree, on a RED condition. O O Page 1 of 31

JUL 0 91993 NUMBER TITLE I REV ISSUE /DATE ER-II.1 RESPONSE TO LOSS OF SECONDARY Rev. 12 IIEAT SINK STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINTD r CAUTION: o if totalfeedwaterflow is less than 320 GPM due to operator action, this procedure.;hould not be performed. Feedflow should not be established to anyfaulted SG sf a o non-faulted SG is available. t 1 Check If Secondary Heat Sink Is Required:

a. Check RCS pressure -

a. EQ IQ E-1, GREATER THAN ANY LOSS OF REACTOR OR NON-FAULTED SG PRESSURE SECONDARY COOLANT, Step 1.

t

b. Check RCS temperature -

b. Try to place RHR system in service GREATER THAN 300 F IN ACCORDANCE WITH (277 FFOR ADVERSE NOP 2.9-1, CONTAINMENT)

PLACING THE RESIDUAL HEAT REMOVAL SYSTEM IN SERVICE, while continuing in this procedure. IE adequate core cooling established with RHR System in service, THEN RETURN TQ procedure and step in effect. 1 1 O j Page 2 of 31 i

JUL 0 91993-NUMBER ! TITLE ' REV. ISSLT/DATE F.R -II.1 RESPONSE TO LOSS OF SECONDARY Rev. 12 1 11 EAT SINK j O STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED r if either of thefollowing conditions exist, RCPs should be tripped and CAUTION: o Steps 10 through 14 should be immediately initiatedfor bleed andfeed: o Core exit thermocouples are approaching 575 *F AND RCS pressure is approaching 2350 PSIG. N o Wide range levelin allfour SGs is less than 21 %. o An alternate water sourcefor the AFWpumps or makeup waterflow to the DWST will be necessary ifDWST level decreases to less than 30,000 gallons. o ifFW-MOV-35 is opened to provide an AFWflowpath, the running AFWpump(s) should be monitoredfor cavitation. L NOTE: IfAUTO AFWis actuated, the AUTO AFW defeat switches must be placed in defeat and the AUTO AFW relays reset before SG levels can be controlled with thefeedwater bypass AOVs. 2 Try To Establish AFW Flow To At Least One SG:

a. Checkcontrolroomindications for cause of ARV failure:

o Check DWSTlevel 1 o Check feedwater bypass AOVs - OPEN o Check ARV pump trip lights - NOT LIT o Check ARV pump speed serpoint indications o Check ARV pump speed indications o Check ARV pump steam chest pressure indications o Check ARV pump discharge pressure indications O' CONTNL'EDONNEXTPAGE Page 3 of 31

s i JUL. u b isa.1 ~ '+ i NUMBER TITLE REV. ISSUE /DATE i ER-H.1 RESPONSE TO LOSS OF SECONDARY Rev. 12 HEAT ' SINK l STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED l l COVTINUEDFROMPREVIOUsPAGE 2

b. Try to mstore ARV flow f

c. Check total ARV flow -

c. Manually increase speed of runmng GREATER THAN 320 GPM ARV pump (s) to establish total ARV flow greater than 320 GPM.

t IE total AFW flow greater than 320 GPM EQIestablished AND the A AFW pump is operating, THEN perform the following to align AFW flow to all SGs through FW-MOV-35:

1) Close AFW header division valve 4

FW-MOV-160.

2) Open RV-MOV-35.

( i

• IE FW-MOV-35 fails to open, THEN perform the following:

l a) Stop the A AFW pump. ] l b) Open RV-MOV-35. IE FW-MOV-35 fails to open, THEN locally open RV-MOV-35 1 - 1 1 -- c) Restart the A' AFW pump. *2

3) Dispatch an operator to check the A AFW pump forcavitation.

3 IE the A AFW pump is cavitating, ~ ! THENlocally throttle the A ARV : j-l pump discharge valve, FW V-183. j; to stop the cavitation. i

4) Check SG levels increasing.

I' i IE the A AFW pump is. I .) SQIoperating . l L. .OR SG levels are SQIincreasing, i THEN dispatch operator to locally j restore AFW flow = ANDGQIQ Step 3. l O

d. RETURNIQprocedum and step in effect A

Page 4 of 31

4 JUL 0 91993 NUMBER TITLE REV. ISSUE /DATE } FR.II.1 RESPONSE TO LOSS OF SECONDARY Rev. I' HEAT SINK l rO uj STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED F 3 Stop All RCPs:

a. Isolate RCP seal water return by closing the following valves:

1) All four seal water retum MOVs

2) Seal water return trip valves, CH-TV-240 and CH-TV-241

b. Check containment pressure -

b. Close RCP oil cooler component LESS THAN 5 PSIG cooling water return trip valve, CC-TV-1411.

c. Establish natural circulation flow

c. IE main condenser is EQI available, by dumping steam to the main THEN dump steam using one or more condenser of the following:

1) Atmospheric vent valve.

2) Terry Turbine steam supply valves.

3) Hog Jet steam supply valves.

4 Check At Least One Charging Start one charging pump. p Pump Running 5 Try To Establish Main Feedwater Flow To At Least one SG:-

a. Check Condensate System -

a. Try to place Condensate System IN SERVICE in service.

IE EQIplaced in service, THEN.G_QIQ Step 9.

b. Start one main feedwater pump

b. Stan the other main feedwater pump and open its-discharge isolation and open its discharge isolation MOV.

MOV IE no main feedwater pump available, THEN open atleast one main feedwater pump dischargeisolation MOV AND EQIQ Step 7, OBSERVE CAUTION PRIOR TO STEP 7. IE one main feedwater pump discharge isolation MOV can NOT be opened, THEN EQIQ Step 9.

c. Establish main feedwater flow (O

by opening feedwater bypass ./ AOVs to each SG Page 5 of 31

JUL 0 91R93 NUMBER TITLE REV. ISSUE /DATE FR-H.1 RESPONSE TO LOSS OF SECONDARY Rev. 12 HEAT SINK (m .( STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED l i 6 Check SG Levels:

a. Narrow range levelin

a. IE feedwater flow to at least one at least one SG -

SG verified, GREATER THAN 6 % 311FN maintain flow to restore (18 % FOR ADVERSE narrow range level to greater than 6 % CONTAINMENT) (18 % for adverse containment). IE flow NOT verified, IHFE ODID step 7, i OBSERVE CAUTION PRIOR TO STEP 7.

b. RETURNIQ procedure and step in effect O

1 s 1 j I i i i %J I Page 6 of 31 i

JUL 0 91993 NUMBER { TITLE REV. ISSUE /DATE I FR-H.1 l RESPONSE TO LOSS OF SECONDARY Rev. 12 HEAT SINK O STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED r CAUTION: Following blocking ofAUTO SI actuation, man:tal Si actuation may be required if conditions degrade. t 7 Try To Establish Feedwater Flow From Condensate System:

a. Depressurize RCS to less than 1800 PSIG to block SI actuation:

1) Check letdown -

1) E PRZR PORV available, l

IN SERVICE Use one PRZR PORV THEN O_QIQ Step 7 b. E PRZR PORV NQIavailable, I_U.EN QQIQ Step 7 a. 2).

2) Use auxiliary spray by

2) E auxiliary spray EQIavailable, performing the following:

IHEN use one PRZR PORV. a) Close the breaker for CH-MOV-298 on MCC-5 b) Open CH-MOV-298 i c) Close CH-MOV-292B and ) CH-MOV-292C d) Manually throttle CH-FCV-110 r 08 CH-FCV-110A to establish auxiliary spray

b. Check PRZR pressure -

b. RETURN IQ Step 7 a.

LESS THAN 1800 PSIG.

c. DML SI actuation using Si block switches

d. Establish normal charging flow by performing the following:

1) Open CH-MOV-292B and

) CH-MOV-292C

2) Close CH-MOV-298

3) Place charging flow control in AUTO O

cormNUEDONNEXTP, AGE Page 7 of 31

- JUL 0 91993 NUMBER TTILE R5V. ISSUE /DATE - FR-H.1 RESPONSE TO LOSS OF SECONDARY Rev. 12 IIEAT SINK-O STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINTD CONUNUED FROM PREVIOUS PAGE l 7

c. Depressurize at least one SG to less than 400 PSIG:

1) Dump steam to condenser at

- 1) Dump steam at maximum rate maximum rate using the following: o Atmospheric vent valve. o Terry Turbine steam supply valves. l o. Hog Jet steam supply valves. E steam can EDIbe dumped, THEN QQIQ Step 9. )

f. Check at least one SG pressure -

f. Continue SG depressurization.

LESS THAN 400 PSIG WHEN at least one SG pressure is less than 400 PSIG, THEN perform Step 7 g.

g. Stop depressmization and maintain

(, SG pressure between 350 PSIG and 400 PSIG

h. Establish condensate flow:

h. E condensate flow NQI establish.d, THEN QQIQ Step 9.

1) Open at least one main feedwater pump discharge MOV

2) Open feedline bypass AOV to intact SGs as necessary to establish condensate flow

3) Isolate main feedwat r pump recirculation valves by locally closing FW-V-124A and i

FW-V-124B O Page 8 of 31

j JUL U 91m NUMBER. TITLE REV. ISSUE /DATE I l FR-H.1 RESPONSE TO LOSS OF SECONDARY.. Rev. 12~ HEAT SINK .j O STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINTD i 8 Check SG Levels: j

a. Narrow range levelin

a. Verify feedwater flow:

.j at least one SG - GREATER THAN 6 % o AUX feedwater flowindicators. (18 % FOR ADVERSE indicate flowc l CONTAINMENT) o Wide range levelin atleast one SG mereasmg. o Core exit thermocouples not - mereasmg. t E feedwater flow to atleast one l SG verified, THEN maintain flow to restore narrow range level to greater than 6 % - (18 % for adverse containment). i E flow NOIverified, THEN QQIQ Step 9.- O-

b. Check PRZRlevel:

b. E containment conditions, RCS 1

- parameters QE process radiation o-ON SCALE momtors indicate the RCS has been -

breached, 7

AND IIEN manually actuate SI' - I AND GQIQ E-0,' o INCREASING REACFOR TRIP OR SAFETY . INJECTION, Step 1. l E containment conditions, RCS - parameters QR pmcess radiation monitors indicate the RCS has NQIbeen breached, THENincrease charging flow to establish PRZR level on scale AND increasing. i q WHEN PRZR levelis on scale i AND increasing, I THEN RETURNIQ procedme and step in effect.

c. RETURNIQprocedure and step in effect O

~ Page -9 of 31 s I

JUL 0 91993 NUMBER ' TITLE REV. ISSLE/DATE 5 FR-H.1 RESPONSE TO LOSS OF SECONDARY Rev. 12 -{ IIEAT SINK j /m b STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 9 Check For Loss Of Secondary RETURNIQ Step 1, i Heat Sink: OBSERVE CAUTION PRIOR TO STEP 1. o Check core exit thermocouples approaching 575 F AEQ RCS pressure approaching 2350 PSIG DR o Wide range levelin all four steam generators less than 21 % r CAUTION: Steps 10 through 14 must be performed quickly in order to establish RCS heat removal by RCS bleed andfeed. 10 Actuate SI : L

a. Manually trip both SIWL Relays

b. Stop all RCPs:

c. Isolate RCP seal water return by i

closing the following valves:

1) All four seal water return MOVs

2) Seal water rerum trip valves, CH-TV-240 and CH-TV-24I I

d. Check containment pressure -

d. Close RCP oil cooler component LESS THAN 5 PSIG cooling wa'er retum trip valve, CC-TV-1411.

i

e. Check HCP WL Relays - TRIPPED i

f. Place allPRZR heater control switches in TPO i

AU Page 10 of 31

a 2-, s. a. =- 4, 4 .i 4 .m n m.. 9 JUI. 0 91993 ' ^ NUMBER TITLE REV. ISSUE /DATE ^ FR-H.1 RESPONSE TO LOSS OF SECONDARY. Rev. 12 HEAT SINK ~~ y- \\+ t STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 1I Verify RCS Feed Path 'And Containment Isolation Actuated Valve Alignments:

a. Check SI valves - IN PROPER

a. Manually align valves.

j EMERGENCY ALIGNMENT .l (SEE OPPOSITE PAGE)

• If MCC-5 is EQT energized, i

THEN attempt to reenergize MCC-5 IN ACCORDANCEWITH EOP 3.1-50, l LOSS OF MCC-5 AEQperform the following to. establish a charging flow path:

1) IE MCC-12 is energized, THEN perfonn the following:

a) Start the A chargmg pump. b) Stop the B charging pump and i place its control switch in TPO. IE MCC-12 is ERT energized. THEN perform the following: a) Place both charging pump control switches in TPO. b) locally close CH-MOV-257 M CH-MOV-257B.- 7 c) Iocally open BA' MOV-32 M BA-MOV-373. .l d) locally at MCC-8 stan B Charging Pump AUX lube l oil pump.- e) Place B Charging Pump UV trip bypass switch,in the 1 bypass position. f) Stan the B charging pump. g) Stop the A charging pump and place its control switch in TPO.*1

b. Checkcontainmentisolation

b. Manually M locally align b

actuated valves - containment isolation actuated i IN PROPER ALIGNMENT valves as necessary. (SEE OPPOSITE PAGE) \\ coNnNUEDONNEXTPAGE Page 11 of. 31 l ~

M 0 9 1993 Il NUMBER TITLE REV. ISSUE /DATE ' h FR-H.1 ~ RESPONSE TO LOSS OF SECONDARY Rev.. 12: IIEAT SINK j .i STEP ACTION / EXPECTED RESPONSE ' RESPONSE NOT OBTAINED CONTINUED FROM PREVIOUS PAGE 11

c. Check HPSI pumps -

. c. Start at least one HPSI pump. AT LEAST ONE RUNNING IE at least one HPSI pump can ' EDIbe started, THEN place HPSI pump control switches in TPO, AND start at least one charging pump._ IE atleast one charging pump can i HQIbe staned, t THEN continue attempts to establish feedwater flow AND RETURNIQ Step 5.

d. Check Charging pumps -

d. Perform the following:

l AT LEAST ONE RUhWING

1) Check off-site power available.

IE off-site powerEQIavailable, i THEN place both LPSI pump. control switches in TPO.

2) Start at least one charging pump.

e. Fail open CH-FCV-110 and i

CH-FCV-110A by placing the Normal /Open control switch for each valve in the open position i i 12 Check PORVs Available:

a. Check"PORV ACCUMULATOR

a. Try to restore power to one _QR both PRESSURE LOW" alarm, of the containment instrument air i

C2-3-11 lower - compressors. l NOTACTUATED

b. Check power to the PORVs and

b. Try to restore power to'at least block valves-AVAILABLE one set of valves.

-i o Semi-vital for PR-AOV-568 and MCC-5 for PR-MOV-567 ' o C Vital for PR-AOV-570 and MCC-12 for PR-MOV-569 0 Page 12 of 31

JUL O 91993 NUMBER TITLE REV. ISSUE /DATE i FR H.1 RESPONSE TO LOSS OF SECONDARY - Rev. 12 } HEAT SINK j j p STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED i 9 Check For Loss Of Secondary RETURNIQ Step 1, Heat Sink: OBSERVE CAUTION PRIOR i TO STEP 1. ) o Check core exit thermocouples approaching 575 F A_M2 RCS pressure approaching 2350 PSIG DR o Wide rangelevelin all four steam generators less than 21 % l r CAUTION: Steps 10 through 14 must be performed quickly in order to establish RCS heat removal by RCS bleed andfeed. t (~N 10 Actuate SI : V

a. Manually trip both SI WL Relays

b. Stop all RCPs:

c. Isolate RCP seal water return by closing the following valves:

1) All four seal water return MOVs

2) Seal water return trip valves, CH-TV-240 and CH-TV-241 i'

d. Check containment pressure -

d. Close RCP oil cooler component LESS THAN 5 PSIG cooling waer retum trip valve, CC-TV 1411.

e. Check HCPWL Relays -TRIPPED

f. Place all PRZR heater control switches in TPO O

Page 10 of 31 1 (' l

JUL 0 91993 iNUMBER TIT 1.E REV. ISSUE /DATE F R. H.1 RESPONSE TO LOSS OF SECONDARY Rev. 12 i j HEAT SINK l l SI VALVE PROPER EMERGENCY ALIGNMENT j Control Board Indication local Indication l Loop SIIsolation Valves Charging Pump Suction Valves Service WaterIsolation Valves l SI-MOV-861A OPEN BA-MOV-32 OPEN Turbine Building SI-MOV-861B OPEN BA-MOV-373 OPEN SW-MOV-1 CLOSED SI-MOV-861C OPEN CH-MOV-257 CLOSED SW-MOV-2 CLOSED SI-MOV-861D OPEN CH-MOV-257B CLOSED i Core Deluge Isolation Valves Charging Pump Discharge Valves i SI-MOV-871 A OPEN CH-MOV-292B OPEN i SI-MOV-871B OPEN CH-MOV-292C OPEN ! Letdown Isolation Valve Containment Sump Suction Valve l LD-MOV-200 CLOSED RH-MOV-22 CLOSED l CONTAINMENT ISOLATION ACTUATED VALVES l l Control Board Indication Local Indication i Verify the following valves CLOSED i DH-TV-554 Relief tank drain Terry Turbine Room WG-AOV-558 Relief tank vent MS-TV-1212 Steamline drain to BD tank NG-SOV-470 Nitrogen supply to PRT MS-TV-1213 Steamline drain to condenser DH-TV-1841 Drain header l LD-AOV-202 Letdown orifice PAB Upper Level l i LD-AOV-203 Letdown orifice SW-TV-2365A SW to BD tank vent condenser LD-AOV-204 Letdown orifice SW-TV-2365B SW to BD tank vent condenser CH-MOV-331 RCP #1 seal bypass VS-SOV-12-1 Air activityinlet SS-AOV-950 Drain header sample SS-AOV-955 PRZR steam sample Blowdown Room SS-TV-960 PRZR liquid sample BD-TV-1312-1 SG blowdown isolation SS-TV-965 Imop 1 hot leg sample BD-TV-1312-2 SG blowdown isolation CC-FCV-611 Drain cooler CC outlet BD-TV-1312-3 SG blowdown isolation RV-MOV-11

1. 1 Feedline isolation valve BD-TV-1312-4 SG blowdown isolation t

RV-MOV-12

1. 2 Feedline isolation valve CC-TV-1831 CC from NST j

RV-MOV-13

1. 3 Feedline isolation valve RV-MOV-14
2. 4 Feedline isolation valve WD-HICV-1840 Containment sump discharge !

CC-TV-920 CC to NST DH-TV-1844 Relief tank drain i CC-TV-917 CC to NST WD-TV-1846 Containment sump discharge i LD-TV-230 Letdown isolation DH-TV-1843 Vapor seal head tank VS-TV-1848 Air activityinlet l

• If containment pressure is greater than 5 PSIG, WG-TV-1845 Relief tankvent verify PASS valves SS-SOV-150A,150B, DH-TV-1847 Dram header 150C and 150D and SS-SOV-151 A,151B, 151C and 151D are closed. *3 Verify the following valves OPEN PAB UpperIzvel g;

SW-MOV-837A A adams filter bypass i l SW-MOV-837B B adams filter bypass Back of page 10

o ^ JUL 0 91993 NUMBER TITLE REV. ISSUE /DATE ~ FR-II.1 RESPONSE TO LOSS OF SECONDARY Rev. 12 HEAT SINK g I~ 1 STEP ACTION / EXPECTED RESPONSE RESPONSE NOTOBTAINED 11 Verify RCS Feed Path And ' Containment Isolation-Actuated Valve Alignments: l

a. Check SI valves - IN PROPER

a. Manually align valves.

I EMERGENCY ALIGNMENT (SEE OPPOSITE PAGE)

• IE MCC-5 is HQIenergized, -

THEN attempt to reenergize MCC-5 IN ACCORDANCE WITH EOP 3.1-50, LOSS OF MCC-5 AND perform the following to - 1 establish a charging flow path: l l

1) IE MCC-12 is energized, THEN perform the following:

a) Start the A charging pump. b) Stop the B charging pump and place its control switch in TPO. i IE MCC-12 is EDIenergized, THEN perform the following: a) Place both charging pump control switches in TPO.- b) locally close CH-MOV-257' M CH-MOV-257B. c) Locally open BA-MOV-32 M BA-MOV-373. d) Locally at MCC-8 stan B i Charging Pump AUX lube oil pump. c) Place B Charging Pump UV trip bypass switch,in the bypass position. f) Stan the B charging pump. g) Stop the A charging pump and place its control switch in TPO.*1 l

b. Check containment isolation

b. Manually 3 locally align actuated valves.

containmentisolation actuated IN PROPER ALIGNMENT valves as necessary. (SEE OPPOSITE PAGE) l 1 l comNtJEDONNEXTPAGE i Page 11 of 31 i

3 ~ 'i JUL 0 91993 1 NUMBER TITLE REV. ISSUE /DATE' ) FR-H.1 RESPONSE TO LOSS OF SECONDARY Rev. 12 HEAT SINK O STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED co.vrINUED FROM PREVIOUS PAGE j 11

c. Check HPSI pumps -

c. Stan at least one HPSI pump.

AT LEAST ONE RUNNING IE atleast one HPSIpump can HQIbe staned, THEN place HPSI pump control switches in TPO, i AND start at least one charging pump. j IE at least one charging pump can EQI be started, THEN continue attempts to establish i feedwater flow AND RETURNIQ Step 5. t

d. Check Charging pumps -

d. Perform the following:

AT LEAST ONE RUNNING

1) Check off-site power available.

IE off-site power EQIavailable, i THEN place both LPSI pump control switches in TPO. t

2) Start at least one charging pump.

e. Fail open CH-FCV-110 and

] CH-FCV-110A by placing the Normal /Open control switch for l each valve in the open position-12 Check PORVs Available: )

a. Check "PORV ACCUMULATOR

a. Try to restore power to one _QR both PRESSURE LOW" alarm, of the containment instrument air C2-3-11 lower -

compressors. NOT ACTUATED ji

b. Check power to the PORVs and

b. Try to restore power to at least block valves-AVAILABLE one set of valves.

o Semi-vital for PR-AOV-568 and MCC-5 for PR-MOV-567 o C Vital for PR-AOV-570 - 1 and MCC-12 for PR-MOV-569 O Page 12 of 31 l 1

1 JUL 0 91993 NUMBER ' TITLE REV. ISSUE /DATE F R -II.1 RESPONSE TO LOSS OF SECONDARY Rev. 12 IIEAT SINK O STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINID NOTE: Monitor the "PORV ACCUMULATOR PRESSURE LOW" alarm, - C2-3-11 lower. Actuation shortly after opening a PRZR PORV \\ could indicate excessive actuator air leakage. If this occurs, j consider shifting PRZR PORVs. I 13 Establish RCS Bleed Path:

a. Verify power to PRZR PORV

a. Restore power to block valves.

block valves - AVAILABLE i

b. Open one PRZR PORV and

b. Open the other PRZR PORV and its its block valve block valve.

c. Check RCS pressure -

c. QQI_Q Step 14.

l GREATER THAN 405 PSIG 1 (635 PSIG FOR ADVERSE CONTAINMENT) {

d. Stop both LPSI pumps and place t

O control switches in TPO l t t i t h 4 i v O e Page 13 of 31 --.i

S. JUL 0 91993 1 NUMBER ITTLE REV. ISSUE /DATE ' {- i FR-II.1 RESPONSE TO LOSS OF SECONDARY Rev. 12 HEAT. SINK - l l i STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED - 14 Verify Adequate RCS Bleed Path:

a. Check PRZR PORVs and

a. Open one PRZR PORV and its l

block valves - block valve. ( AT LEAST ONE TRAIN OPEN

b. Check RCS pressure-

- b. IE RCS pressure is less than i STABLE 1400 PSIG (1700 PSIG for adverse containment), THEN.QQIQ Step 15. IE RCS pressure is greater than 1400 PSIG r (1700 PSIG for adverse containment), i allow RCS pressure to stablize, i THEN do Step 14 c.

c. Check RCS pressure-

c. Open both PRZR PORVs and their LESS THAN 1400 PSIG block valves.

l (1700 PSIG FOR ADVERSE IE two PRZR PORVs and 1 CONTAINMENT) two block valves N_QIopen, THEN perform the following:

1) Open all RCS high point ventsi a) Locally at A and BX DC buses energize the reactor head and PRZR vent valves.

-l b) Manually open the reactor head ;- 'l and PRZR vent valves.

2) Depressurize at least one intact SG to atmospheric pressure using-atmospheric vent valve.

3) Align any available low pressure water source to the depressurized SG(s).

j 15 Perform The Immediate Actions Of f ] E-0, REACTOR TRIP OR SAFETY INJECTION. While Continuing With This Procedure i O 1 ~' Page 14 of 31 ~ w

Jul. 0 91993 I NUMBER TITLE REV. ISSUE /DATE F R-II.1 RESPONSE TO LOSS OF SECONDARY Rev. 12 t IIEAT SINK l_ (A STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 1 16 Maintain RCS IIcat Removal:

a. Maintain SI flow

b. Maintain PRZR PORV(s) and block valve (s) open as required I

c. Check all available CRDM fans -

c. JE power is available, RUNNING THEN perform the following:

o " ROD DRIVE COOLING

1) Reset 480 V lockout relays:

FAN STOPPED" annunciator - NOT ACIUATED o 27Y-6 and 27Y-6B for bus 6. o 27Y-7 and 27Y-7B for bus 7.

2) Locally close supply breakers for MCC-7 on bus 6 and bus 7.

3) Imlly start allavailable CRDM fans.

IE poweris EDIavailable, f]/ THEN QQIQ Step 17. x. OBSERVE CAUTION AND NOTE PRIOR TO STEP 17. ps 'r ) Page 15 of 31

dW. NUMBER Tm.E AE FR II.1 RESPONSE TO LOSS OF SECONDARY Rev. 12 i IIEAT SINK j STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED !ir CAUT10N: If the RWST level decreases to less than 140,000 gallons, the SI system should be alignedfor RHR recirculation using ES-1.3, TRANSFER TO SUMP RECIRCULATION. t I l NOTE: IfRCS temperature is ieduced below 280 *F and secondary heat i sink has not been established, the RHR system can be placed in service using ATTACHMENT A. 17 Continue Attempts To Establish Secondary Heat Sink In At Least One SG. o ARV flow with turbine drive AFW pump o Main feedwater flow with a main feedwater pump o Condensate flow with a I condensate pump l o ARV flow with the electric driven AFW pump IN ACCORDANCEWITH NOP 2.18-3, ELECTRIC AUXILIARY FEED PUMP OPERATION o Otherlow pressure flow 18 Check For Adequate Secondary Heat Sink:

a. Nanow range levelin

a. RETURN I_Q Step 17, at least one SG -

OBSERVE CAUTION AND NOTE GREATER THAN 6 % PRIOR TO STEP 17. (18 % FOR ADVERSE CONTAINMENT) O l j Page 16 of 31 c

jNUMBER TITLE REV. ISSUE /DATE j FR-H.1 RESPONSE TO LOSS OF SECONDARY Rev. 12 { IIEAT SINK O i ] PROCEDURE TO RESET SAFETY INJECTION AND CONTAINMENT ISOLATION i 1 Place both containment sump pump control switches in TPO. 2 Place CARFAN damper contml switches in the test position. 3 Stop RMS channel R-12, vapor container gas pump. 4 Place or check the following control switches on the MCB in the closed position. i WG-AOV-558 LD-AOV-203 SS-AOV-955 I DH-TV-554 LD-AOV-20$ SS-TV-960 DH-TV-1841 CH-MOV-331 SS-TV-965 LD-AOV-202 SS-AOV-950 CC-FCV-611 5 Check that "HCP RESET SI TO HCP BLOCKED", B1-2-3 upper and lower, annunciators are actuated. 6 Reset High Containment Pressure Relays HCP A and HCP B. 7 IE RCS pressure is less than 1800 PSIG, j THEN perform the following:

a. Check at least two out of the three Enable Manual Block Of SI lights between the SI WL Relays lit.

I

b. Place the A Train and the B Train SI Block Switches to the block position and then let them return to the neutral position.

c. Check A Train and B Train " CORE COOLING BLOCK", B1-2-2 upper and lower, I

annunciators are actuated. 8 Reset both SI WL Relays. 9 Reestablish the SI WL trip of the HCP WLs by performing the following:

a. Open one of the 12 valves listed in Step 4 above.

b. Push CIAS/HCP Reset button on the back of the main control board Section F.

10 Safety Injection and Containment Isolation actuation reset is complete, perform the following as required: o Open SS-AOV-950 to supply the PASS. O Close manual containment isolation valves. o Reset local solenoid valves in the blowdown room and terry turbine room to reopen automatic containment isolation valves. o Reopen manual containment isolation valves. o Realign main control board operated containment isolation valves. Back of page 16

JUL 0 91993 NUMBER 'ITILE REV. ISSUE /DATE i F R. II.1 RESPONSE TO LOSS OF SECONDARY Rev. 12 ) i IIEAT SINK STEP ACTION / EXPECTED RESPOASE RESPONSENOTOBTAINED 19 Check RCS Temperatures: RETURNIQ Step 17, OBSERVE CAUTION AND NOTE o Check core exit thermocouples - PRIOR TO STEP 17. i DECREASING o Check RCS hot leg temperatures - DECREASING 20 Verify Reactor IIcad Vent Valves Manually close reactor head vent valves And PRZR Vent Valves Closed and PRZR vent valves. r CAUTION: Ifoff-site power is lost after resetting SI, manual action may be u required to reopen SI valves and restart safeguards equipment. t 21 Reset SI And Containraent Isolation:

a. Check containment presure -

a. Reset SI WL Relays by LESS THAN 5 PSIG performing the following:

i

1) Open CKTs A13 and B13 in DC panels A and B.

2) Reset SI WL Relays.

3) GQIQ Step 21 c.

b. Reset SI and containment isolation (SEE OPPOSITE PAGE)

c. Place PRZR heater control switches in TPO

(

d. Check RCS pressure -

d. QQIQ Step 22, t

GREATER THAN 405 PSIG OBSERVE NOTE PRIOR (635 PSIG FOR ADVERSE TO STEP 22. CONTAINMENT)

e. Stop both LPSI pumps and place i

contml switches in AUTO t) Page 17 of 31 i e i

_.. _ -. _ ~. _ -.. = c.... w JUL 0 91993 NUMBER TITLE REV. ISSUE /DATE F R-H.1 RESPONSE TO LOSS OF SECONDARY Rev. 12 ) IIEAT SINK STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: o After stopping any SI pump, RCS pressure should be allowed - l to stabilize or increase before stopping another SIpwnp. o The charging and HPSI pwnps should be stopped on alternate ECCS trains when possible, j i i I 22 Check If One Charging Pump Should Be Stopped-

a. Check two charging pumps - RUNNING

a. QQIQ Step 23.

f

b. Determine required RCS subcooling from table below:

REQUIRED RCS SUBCOOLING ( F) CONTAINMENT l HPSI PUMP STATUS NORMAL ADVERSE NONE l RUNNING 50 228 ONE RUNNING 32 214 j 'lWO RUNNING 32 213 i

c. Check RCS subcooling based on

c. IE RCS hot leg temperatures are core exit thermocouples -

greater than 400 F, ~ GREATER THAN REQUIRED THEN QQIQ Step 25. SUBCOOLING IE RCS hot leg temperatures are less than 400 F, THEN start one LPSI pump if none runmng. IE at least one LPSI pump can. HQIbe operated, j THEN QQIQ Step 25. }

d. Check PRZR level-

d. DO NOT STOP CHARGING PUMP.

GREATER THAN 10 % QQIQ Step 25. (24 % FOR ADVERSE CONTAINMENT)

e. Stop one charging pump and place its control switch in TPO l

a Page 18 of 31 j

~ _ _.. . ;, w JUL 0 91993 NUMBER '. 'ITILE REV. ISSUE /DATE ' ) F R-H.1 RESPONSE TO LOSS OF SECONDARY Rev. 12 I HEAT SINK j

O 1

STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 23 Check If HPSI Pump Should He Stopped

a. Check two HPSI pumps - RUNNING

a. O_Q T_Q Step 23 f.

j

b. Determine required RCS subcooling j

from table below: REQUIRED RCS SUBCOOLING ( F) l RCS ONE CHARGING PUMP NO CHARGING PUMP PRESSURE RUNNING RUNNING ( PSIG ) CONTAINMENT CONTAINMENT NORMAL ADVERSE NORMAL ADVERSE 1000 to 2000 76 127 85 139 600 to 1000 105 272 116 297 0 to 600 136 272 146 297~ 'f O 4

c. Check RCS subcooling based on

c. IE RCS hot leg temperatures are.

core exit thermocouples - greater than 400 F, GREATER THAN REQUIRED THEN EQI_Q Step 25. SUBCOOLING -l IE RCS hot leg temperatures are - less than 400 F, THEN start one LPSI pump if none running. l J IE at least one LPSI pump can l EQIbe operated, i THEN GQIQ Step 25.

d. Check PRZR level-

d. DO NOT STOP HPSI PUMP.

GREATER THAN 10 % EQIQ Step 25. (24 % FOR ADVERSE CONTAINMENT) e.. Stop one HPSI pump O CONUNUEDON NEXTP, AGE : l l Page 19 of 31 j D

i u. JUL 0 91993-NUMBER TITLE REV.1SSUE/DATE l ' FR-II.1 RESPONSE TO LOSS OF SECONDARY-Rev. 12 -l HEAT SINK ~'o STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED l t CONTINUED FROM PREVIOUS PAGE i l 23

f. Check one HPSI and one charging pump -

f. DQIQ Step 24.

RUNNING

g. Determine required RCS subcooling from table below:

REQUIRED RCS SUBCOOLING ( F) i RCS i PRESSURE CONTAINMENT l ( PSIG ) NORMAL ADVERSE GREATER THAN 1400 32 32 i l 1350 to 1400 105 180 1300 to 1350 172 31' I l 1250 to 1300 206 365 1200 to 1250 244 365 1100 to 1200 285 365 LESS THAN { 1100 ~ 326-365 i

h. Check RCS subcooling based on h.IE RCS hot leg temperatures are core exit thermocouples -

greater than 400 F, j GREATER THAN REQUIRED THEN QQIQ Step 25. SUBCOOLING l IE RCS hot leg temperatures are less than 400 F, THEN start one LPSI pump if none running. IE at least one LPSI pump can EQIbe operated, THEN QQIQ Step 25.

j

i. Check PRZRlevel-

i. DO NOT STOP HPSI PUMP.

i GREATER THAN 15 % QQIQ Step 25. (35 % FOR ADVERSE CONTAINMENT)

j. Stop second HPSI pump O

i Page 20 of 31 i i 1

~., c- -) JUL 0 91993 9 NUMBER : TITLE REV.1SSUE/DATE I' l" FR-II.1 RESPONSE TO LOSS OF SECONDARY.

Rev. _12

-l l-HEAT, SINK 10 ~ STEP' - ACTION / EXPECTED RESPONSE - ' RESPONSE NOT OBTAINED 24-Check If Normal Charging Flow Is Adequate: 1 q

a. Check HPSI pumps -

a. RETURNIQ Step 23.

BOTH STOPPED -l

b. Check charging pumps -

b. RETURN IQ Step 22, i

ALL BUT ONE STOPPED l i i O 1 I -l O Page 21 of 31 4 c v

JUL 0 91993 l NUMBER TITLE i REV. ISSUE /DATE i FR-II.1 RESPONSE TO LOSS OF SECONDARY Rev. 12-t HEAT SINK O i j PROCEDURE FOR ESTABLISHING LETDOWN I 1 Place the control switch for the demineralizer high temperature bypass valve. l LD-TCV-113A, in the VCT position. l l 2 Check clo ed or close LD-MOV-200. 3 Place letdown low pressure control valve, LD-PCV-113,in manual and open to 50 %. t i 4 Check open or open charging line isolation valves CH-MOV-292B and CH-MOV-292C. I i NOTE: If containment pressure is greater than 5 PSIG and a decision has been made to place letdown in service, thefollowing actions are required: i l o To open a letdown orifice isolation valve place its control switch in the open position. To open LD-TV-230 place the HCP override switchfor LD-TV-230 l in the override position. o To open LD-MOV-200 the SI WL relays must be reset. i 5 Place one 40 GPM letdown orifice isolation valve, LD-AOV-203 or LD-AOV-2(M, control switch in AUTO. i l 6 Open letdown isolation valve LD-TV-230. 7 Open letdown stop valve LD-MOV-200, then manually adjust letdown low pressure control valve, LD-PCV-113, to maintain pressure down stream of the letdown orifices greater than saturation pressure. 8 Place additional letdown orifice isolation valve control switches in AUTO to obtain desired letdown flow and adjust the letdown low pressure contml valve, LD-PCV-113, to obtain 200 PSIG down stream of the letdown orifices, then place LD-PCV-113 in AUTO. 9 Adjust the RCP seal water supply flows as necessary after any charging flow rate change by locally throttling seal water supply valves CH-V-345A,345B,345C and 345D. 10 When the nonregenerative heat exchanger outlet temperature is less than 115*F and letdown flow is less than 160 GPM, initiate flow through the purification demineralizer by placing the control switch for the demineralizer high temperature bypass valve, LD-TCV-113A, in the AUTO position. O Back of page 21

JUL 0 91993 NUMBER TITLE REV. ISSUE /DATE F R-II. I RESPONSE TO LOSS OF SECONDARY Rev. 12 HEAT SINK O STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: After closing a PRZR PORV, it may be necessary to waitfor RCS pressure to increase to permit stopping Sipumps in Steps 22 and 23. 25 Check RCS Bleed Path Status:

a. Check PRZR PORVs - ANY OPEN

a. DDIQ Step 26.

b. Establish letdown

b. IE containment pressure is (SEE OPPOSITE PAGE) less than 5 PSIG, THEN establish alternate letdown by i

performing the following:

1) Reset Containment HCP WL Relays.

2) Open DH-TV-1841, dram header trip valve.

3) Reset solenoid in blowdown room for drain header trip valve, DH-TV-1847.

4) Close breaker for DH-MOV-310.

5) Open one loop drain MOV.

O'

6) Throttle DH-MOV-310 to maintain PRZR level.

7) Close CH-MOV-292B and CH-MOV-292C.

8) Line up drain 3er to VCF:

I a) locally open CH-V-383, drain header to VCT. b) locally close DH-V-408, drain header to PDT.

c. Place charging flow controlin manual:

1) Place controller for CH FCV-110 or CH-FCV-110A in manual

2) Adjust selected controller output to fully open valve

3) Place the Normal /Open contml switches for CH-FCV-110 and CH-FCV-110A in the normal position O

CONTINUEDONNEXTPAGE Page 22 of 31

1 ) JUL O 91993 i NUMBER TITLE REV. ISSUE /DATE i FR-H.1 RESPONSE TO LOSS OF SECONDARY Rev. I' HEAT SINK STEP ACTION / EXPECTED RESPONSE. RESPONSE NOT OBTAINED l l l CONTINUED FROM PREVIOUS PAGE 25

d. Align charging pump suction to VCT:

l i

1) Open CH-MOV-257 and CH-MOV-257B

2) Close BA-MOV-32 and BA-MOV-373

e. Close one open PRZR PORV

e. Perform the following:

j

1) Close its block valve.

f IE block valve can NQIbe closed, THEN GDIQ E-1, LOSS OF REACTOR OR SECONDARY COOLANT, l Step 1. 2)' Adjust charging flow to equalize [ letdown flow. O

3) Controlcharging flow to:

.o Stabilize RCS pressure. o Maintain RCS subcooling greaterthan 32 F.

4) RETURNIQ Step 21, l

OBSERVE CAUTION PRIOR TO STEP 21. l

f. Adjust charging flow to equalize I

letdown flow

g. Close block valve for closed PRZR PORV

h. Control charging flow to:

o Stabilize RCS pressure -) o Maintain RCS subcooling I greater than 32 F -) i O

i. RETURNIQStep 21 OBSERVE CAUTION PRIOR TO STEP 21 Page 23 of 31 1

nii 0 9J993 ) NUMBER TTILE REV. ISSUE /DATE- ~ FR-H.1 RESPONSE TO LOSS OF SECONDARY - Rev. 12 HEAT SINK j . O}

i N

STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 1 26 Check PRZR PORVs And Block Manually close all PRZR PORVs and i Valves Closed . PRZR PORV block valves, 1 i 27 Check If LPSI Pumps Should I Be Stopped: l . i

a. Check RCS pressure:

a. O_QIQ E-1,-

LOSS OFREACTOR OR 1

1) Check RCS pressure -

SECONDARY COOLANT. Step 1. GREATER THAN 405 PSIG (635 PSIG FOR ADVERSE i CONTAINMENT) i i

2) Check RCS pressure --

STABLE OR INCREASING

b. Stop LPSI pumps and place l

control switchesin AUTO i - i 28 Control Char ng And Letdown l Flows To Ma tain RCS Pressure L r NOTE: Plant staffshould determine best means ofpressure control, ^ either bubble in PRZR or solidplant control. 1 -J l t . ? 29 GD.ID. ES-1.1, .l Si TERMINATION, Step 8 Eht i O Page 24 of 31 i -m. h-a

jNUMBER l TM.E REV. ISSUE /DATE l RESPONSE TO LOSS OF SECONDARY Rev. 12-FR-H.1 HEAT SINK l 9 PROCEDURE FOR ESTABLISIIING LETDOWN 1 Place the control switch for the demineralizer high temperature bypass valve, LD-TCV-113A,in the VCT position. I 2 Check closed or close LD-MOV-200. l l Place letdown low pressure control valve, LD-PCV-113, i. v al and open to 50 %. 3 4 Check open or open charging line isolation valves CH-MOV-292B and CH-MOV-292C. l l NOTE: Ifcontainment pressure is greater than 5 PSIG and a decision has been made to place letdown in service, thefollowing actions are required: l o To open a letdown onfice isolation valve place its control switch in the open position. o To open LD-TV-230 place the HCP override switchfor LD-TV-230 in the overrideposition. o To open LD-MOV-200 the SI WL relays must be reset. 9 5 Place one 40 GPM letdown orifice isolation valve, LD-AOV-203 or LD-AOV-204, control i switchin AUTO. ) i 6 Open letdown isolation valve LD-TV-230. 7 Open letdown stop valve LD-MOV-200, then manually adjust letdown low pressure control valve, LD-PCV-113, to maintain pressure down stream of the letdown orifices greater than saturation pressure. 8 Place additional letdown orifice isolation valve control switches in AUTO to obtain desired letdown flow and adjust the letdown low pressure control valve, LD-PCV-113, to obtain 200 PSIG down stream of the letdown orifices, then place LD-PCV-113 in AUTO. 9 Adjust the RCP seal water supply flows as necessary after any charging flow rate change by locally throttling seal water supply valves CH-V-345A,345B,345C and 345D. i 10 When the nonregenerative heat exchanger outlet temperature is less than 115 F and letdown flow is less than 160 GPM, initiate flow through the purification demineralizer by placing the control switch for the demineralizer high temperature bypass valve, LD-TCV-113A, in the AUTO position. O Back of page 24

~ JUL 0 91993 NUMBER TITLE REV. ISSUE /DATE F R -II.1 RESPONSE TO LOSS OF SECONDARY Rev. 12 HEAT SINK O 4 ATTACHMENT A Procedure to be followed in the event that plant staff decides to place RHR system in service if secondary heat sink cannot be established and RCS temperature is less than 280 F. Initial Conditions: 1 PRZR level 100 %. i 2 HPSI and / or charging pumps operating. 3 One or both PRZR PORVs open. 4 RCS temperature less than 280 F. Procedure: 1 Check RCS subcooling greater than 32 F. i 2 Stop one HPSI pump. \\ 3 Allow RCS pressure to stabilize. 4 Stop second HPSI pump. 5 Control charging flow to maintain RCS pressure. 6 Reduce RCS pressure to 300 PSIG. Utilize Heise gauge to verify RCS pressure by performing the following:

a. Locally close SS-V-951, drain header sample manualisolation valve.

b. Open one loop drain header isolation MOV.

1

c. Place the HCP override SOV-950 switch in the override position.

i

d. Open drain header sample valve SS-AOV-950 to place the Heise gauge in semce.

7 Reset SI:

a. Open CKTs A13 and B13 in DC panels.A and B.

j

b. Reset SI WL relays.

1 8 Place letdown system in service to control RCS pressure (SEE OPPOSITE PAGE). 9 Cycle CH-MOV-257 and CH-MOV-257B to control VCT level. Page 25 of 31 j

JUL 0 91993 NUMBER TITLE REV. ISSLT/DATE FR-H.1 RESPONSE TO LOSS OF SECONDARY Rev. 12 l HEAT SINK I i ATTACHMENT A r CAUTION: Ifeither of thefollowing occur while placing RHR in service; The stem locking devicesfor RH-FCV-796 and o RH-FCV-602 cannot be removed OR o RH-Sf0V-780, RH-Sf0V-781, RH-b1OV-803 a-RH-A10V-804 fails to open, continue RCSfeed and bleed cooling with the PORV(s) as the bleedpath. if the PORVs are not available OR become unavailable, use the PRZR LTOP reliefvalves as the bleedpath IN ACCORDANCE IVITH ATTACHbfENT B. t i 10 Place RHR system in service by performing the following: a. Remove the stem locking devices from RH-FCV-796 and RH-FCV-602, then open the control airisolation valves to the valve actuators. b. Verify RCS pressure approximately 300 PSIG. c. Place both LPSI pump control switches in TPO. d. Verify at least two service water pumps running. e. Open SW-MOV-5 and SW-MOV-6. f. IE the RHR system is aligned for sump recirculation, THEN perform the following:

1) Open CH-MOV-257 and CH-MOV-257B.

2) Close BA-MOV-32 and BA-MOV-373.

3) Stop the RHR pump.

4) Close RH-MOV-22 and RH-V-808A.

g. Unlock and close the electrical disconnect switches, located on the back wall of the main control room, for RH-MOV-781 and RH-MOV-803. h. Open RHR loop suction valves RH-MOV-780 and RH-MOV-781. i. Open RHR loop return valves RH-MOV-803 and RH-MOV-804 j. Close RH-FCV-796 and RH-FCV-602. k. Start one RHR pump. 1. Throttle open RH-FCV-796 and RH-FCV-602 to establish RHR flow. Page 26 of 31

JUL 0 91993 i l NUMBER TITLE REV. ISSUE /DATE .F R -II.1 RESPONSE TO LOSS OF SECONDARY Rev. 12 i j IIEAT SINK O ATTACIIMENT A i 11 Close core deluge valves, SI-MOV-871 A and SI-MOV-871B. 12 Close reactor head vent valves and PRZR vent valves. 13 Close all PRZR PORVs and block valves. 14 Shift charging pump suction to VCF by performing the following: a. Open CH-MOV-257 and CH-MOV-257B. b. Close BA-MOV-32 and BA-MOV-373. 15 Maintain RCS pressure less than 300 PSIG. 16 Continue plant cooldown IN ACCORDANCE WITH NOP 2.3-4, SHUTDOWN FROM HOT STANDBY TO COLD SHUTDOWN. END O i l ) l l O Page 27 of 31

i JUL 0 91993 I ' NUMBER TITLE l REY. ISSUE /DATE FR-II.I RESPONSE TO LOSS OF SECONDARY Rev. 12 IIEAT SINK ATTACHMENT B Procedure to follow in the event the PORVs are not available as the bleed path if: o a stem locking device can not be removed from RH-FCV-796 or RH-FCV-602 2 i o any RHR loop isolation valve fails to open while placing the RHR system in service. Initial conditions: 1 PRZR level 100 %. I 2 HPSI and / or charging pump running. Procedure: -i r CAUTION: IfRWST level decreases to less than 140,000 gallons, the SI system should be alignedfor RHR recirculation using ES-1.3, TRANSFER TO SUMP RECIRCULATION. L 1 Installjumpers listed in ATI'ACHMENT C for all four LTOP motor operated j isolation valves ( PR-MOV-596, PR-MOV-597, PR-MOV-598 and PR-MOV-599 ). 2 Energize all four LTOP motor operated isolation valves by closing their breakers on MCC-5. 3 Check closed 2 close at least one RHR loop suction valve, RH-MOV-780 and / or RH-MOV-781. 4 Check closed 3 close at least one RHR loop return valve, RH-MOV-803 and / or i RH-MOV-8(M. ) i O Page 28 of 31 1

~ ~ JUL 0 91993 NUMBER TITLE i REV. ISSUE /DATE i i FR-H.1 RESPONSE TO LOSS OF SECONDARY Rev. 12 HEAT SINK O 1 ATTACHMENT B i r CAUTION: To prevent exceeding Technical Specification Figure 3.4-5, REACYOR VESSEL TEAfPERATURE PRESSURE LIAllTATIONS FOR COOLDOWN, using the LTOP reliefs as the bleedpath, observe thefollowing: o o DO NOT OPERATE EITHER HPSIPUAfP. o DO NOT OPERATE A10RE THAN ONE CHARGING PUAfP. o DO NOT COOLDOWN THE RCS BELOW 150*F. L 5 Check one charging pump running and place the other charging pump control switch in TPO. 6 Plac; both HPSI pump control switches in TPO. 7 Open one set of LTOP motor operated isolation valves ( PR-xOV-596 and PR-MOV-598 ).QR ( PR-MOV-597 and PR-MOV-599 ) to place one LTOP relief valve in service. 8 Open CH-MOV-292B and CH-MOV-292C. 9 Open flow control valves CH-FCV-110 and CH-FCV-110A by placing the Normal /Open control switch for each valve in the open position. 10 Close both PORVs and their block valves. 11 Close reactor head vent valves and PRZR vent valves. 12 Close both core deluge valves, SI-MOV-871 A and SI-MOV-871B. 13 Monitor RCS pressure. IE RCS pressure increases to greater than 440 PSIG, j THEN open the other set of LTOP relief valve isolation MOVs to place both LTOP relief valves in service. 14 Continue RCS feed and bleed cooldown to cold shutdown ( Mode 5 ). l O ~ Page 29 of 31

I JUL 0 91993 NUMBER TITLE REV. ISSUE /DATE F R-H,1 RESPONSE TO LOSS OF SECONDARY Rev. I ~' HEAT SINK I. i. O t NTTACIIMENT B F CAUTION: To prevent damage to the RHR pump seal and bearing assemblies, DO NOTisolate service waterflow to the RHR heat exchangers. t e i 15 Maintain RCS temperatun: between 150 F and 200 F by locally throttling service water flow to the RHR heat excnangers using SW-V-5A and/or SW-V-6A. 16 Consult with plant engineering staff for further recovery actions. E O = I l i i O %/ Page 30 of 31

as JUL491993 NUMBER i TITLE REV. ISSUE /DATE l F R.II.1 l RESPONSE TO LOSS OF SECONDARY Rev. 12 i IIEAT SINK l ATTACIISIENT C LTOP ISOLATION 310V INTERLOCK JUMPER TABLES Installjumpers as indicated in the tables below to operate the LTOP isolation MOVs with their control switches mounted on the main control board. Installation of these jumpers will bypass the opening and closing interlocks as indicated in the table below. t NOTE: The terminal boards are located in the main control board on the left side of the back wall of section B. Valve Desired Temlinal Terminal Wire Terminal Terminal Wire Position Board ID Board ID Open AB 3 596-P1 TO AA 10 596-7 Closed AB 1 596-3 10 AB 2 596-T i Open AC 4 598-7 TO AC 9 598-P1 4 PR-MOV-598 Closed AC 7 598-3 TO AC 8 598-T Valve Desired Terminal Terminal Wire l Terminal Terminal Wire Position Board ID Board ID Open BA 10 597-7 TO BB 3 597-P1 PR-MOV-597 Closed BB 1 597-3 TO BB 2 597-T Open BC 4 599-7 TO BC 9 599-P1 Closed BC 7 599 TO BC 8 599-T Page 31 of 31 1}}