ML20237H735

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Rev 2 to Emergency Instruction ES-0.2, Safety Injection Termination
ML20237H735
Person / Time
Site: Sequoyah  Tennessee Valley Authority icon.png
Issue date: 06/12/1987
From: Strickland G, Terpstra G
TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML20237H133 List: ... further results
References
ES-.2, ES-0.2, NUDOCS 8708170330
Download: ML20237H735 (20)
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Text

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TENNESSEE VALLEY AUTHORITY j

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- SEQUOYAH NUCLEAR PLANT j

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EMERGENCY INSTRUCTION .

ES-0.2

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SI TERMINATION Revision 2 ~

t PREPARED BY: G. Strickland j RESPONSIBLE SECTION: Operations -

REVISED BY: ~~ Gary L. Terpstra SUBMITTED BY:_ , /l' ea , .. ,

R sponsibin 'Section Supervisor PORC REVIEW ATE: ,

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APPROVED BY:

.. , Plant Manager DATE APPROVED
N 12 E Reason for revision (include all Instruction Change Form Nos.):

Revised to add step 11.c (readjust FCV-62-89/93); added 36.a (reset Bit Hts); corrected SOI numbers in step 25: lef t FCV-74-16/28 in. 0 PEN position 7

in step 38: changed SI-407 to SI-407.2 in step 40: and remove comma < from

{ steps 6 and 41.

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l The last page of this instruction is number: 18

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r SEQUOYAH NUCLEAR PLANT PLANT INSTRUCTION REVISION LOG ,

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2 EMERGENCY INSTRUCTION ES-0.2 REVISION Date Pages REASON FOR REVISION (INCLUDE COMMIT- I LEVEL Approved Affected MENTS AND ALL ICF FORM NUMBERS)

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Revised to add step to implement REP early in instruction; and to delete .

1 OP/21/85 ALL REP implementation substep.

Revised to add step 11.c (readjust FCV 89/95); added 36.a (reset Bit Hts); cor-rected SOI numbers in step 25; left FCV-74-16/28 in OPEN position in step 38;  ;

4,6,12, changed SI-407 to SI-407.2 in step 40; 2 JUN 1 2 1987 16-18 and-remove commas from steps 6 and 41.

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  • SQNP ES-0.2 Unit 1 or 2-Page 1 of 18 Rev. 1 SI TERMINATION ..

A. PURPOSE -

This guideline provides the necessary instructions to terminate safety injection and stabilize plant conditions. -

B. SYMPTOMS '

None C. TRANSITION FROM OTHER INSTRUCTIONS  ;

1. E-0, Reactor Trip Or Safety Injection
2. E-1, Loss Of Reactor Or Secondary Coolant .

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SQNP ES-0.2 Unit 1 or 2 i Page 2 of 18

.. Rev. 1

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S1 TERMINATION

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STEP ACTION / EXPECTED RESPONS_E_ RESPONSE NOT OBTAINED CAUTION: If offsite power is lost after SI resec, then manual -

action will be required to restart the SI Pumps and RHR Pumps. ,

1 Reset SI Check P-4 interlock with SI reset, SI-268 2 Stop One CCP i

,p ' **

3 Check RCS IF pzr level or RCS press 3ecreasing, 1

a. Pzr level - STABLE OR THEN start CCPs and go '

INCREASING to

  • E-1, LOSS OF REACTOR l OR SECONDARY COOLANT
b. RCS press - STABLE OR INCREASING e
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SQNP ES-0.2 Unit 1 or 2

, Page 3 of 18 Rev. 1 i

i( r SI TERMINATION O

STEP ACTION / EXPECTED RESPONSE RESPONSE NOT'OBTAINED ,.

4 Check If SI Pumps Should .

Be Stopped -

a. RCS press greater than a. IF_ RCS press less SI Pump injection than SI Pump injection press press, THEN:
1) RCS press > 1500 psig Stop one SI Pump OR_

Allow pzr level

2) SI Pump flow 0 gpm and RCS press to (FI-63-20 and 151) stabilize, THEN stop second
b. Stop SI Pumps SI Pump i e # ~ IF SI Pumps are required t6 maintain pzr level, THEN start SI Pumps and go to
  • E-1, LOSS OF REACTOR OR SECONDARY COOLANT 5 Stop RHR Pumps l

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SQNP ES-0. 2 Unit 1 or 2 Page 4 of 18

, Rev. 2 r

SI TERMINATION -

STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 6 Verify ECCS Not Required IF pzr level or RCS subcooling can NOT be maintained,

a. Pzr level > 20% THEN start CCP and/or SI

[50% FOR ADVERSE Pamp's as necessary.

CNTMT] . .

-- Go to

  • E-1, LOSS OF REACTOR OR SECONDARY COOLANT
b. .RCS subcooling > 40 F s

7 Reset Phase A And Phase B "

r I 8 Ensure Cntmt Air Supply In Service I y- -

a. Air compressors - RUNNING
b. Cntmt air supply valves on elev 714 - OPEN
1) FCV-32-80 (81)
2) FCV-32-102 (103)

L 3) FCV-32-110 (111)

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,- SQNP 4

- ES-0. 2 - Unit- 1 or 2 l

,. Page 5 of 18-Rev. 1 _

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SI TERMINATION l 1

-STEP ACTION / EXPECTED RESPONSE ' RESPONSE NOT'OBTAINED .,

'l 9- Establish Normal Charging

a. Close FCV-62-89 l t i
b. Open charging line isolation FCV-62-90 and 91
c. Open FCV-62-85 or 86 '
d. Adjust FCV-62-89 and 93 to establish following: ,

.1) Seal injection flow

~ 2) . Pzr level stable or increasing .

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e. Open seal water return FCV-62-61 and 63 10 - Establish Letdown IF letdown can' NOT be established
a. Open letdown isolation THEN establish excess valves:

letdown

1) FCV-62-69 .
2) FCV-62-70
3) FCV-62-77 l
b. Adjust letdown press i

controller, FCV-62-81, ^

s 25% open in manual -

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c. Open an orifice . valve i
d. Adjust FCV-62-81 for desired press, then place in AUTO
1) 320 psig at normal letdown temp I

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SQNP

  • ES-0. 2 Unit 1 or 2 -

Page 6 of 18

.s Rev. 2

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o SI TERMINATION- -

s STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 11 Isolate BIT

a. - Close BIT inlet FCV-63-39 and 40 '

x -'

, b. Close BIT outlet FCV-63-25 and 26 c '. Adjust FCV-62-89 and- 93 "

to establish following:

1) Seal injection flow

^8 gpm per RCP '

2) Pzr level stable or increasing

( 12 Check RCS

" , , Control charging to maintain pzr level and

a. Pzr level ' STABLE OR RCS press INCREASING IF pzr level or RCS. press
b. RCS press - STABLE.OR can NOT be maintained, INCREASING realign BIT, isolate charging and letdown.

Go to

  • E-1, LOSS OF REACTOR OR SECONDARY COOLANT 13 . Align CCP Suction To VCT
a. Open VCT outlet valves FCV-62-132 and 133
b. Close RWST valves '

FCV-62-135 and 136 14 Check VCT Makeup System

a. Makeup set for RCS boron concentration

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m' SQNP ES-0. 2 Unit 1 or 2 Page 7 of 18 Rev. 1 SI TERMINATION j STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 15 Stabilize RCS Press

a. Control pzr heaters -

as necessary

b. Control pzr normal sprays b. IF normal p2r sprays as necessary TOT available AND letdown in service, THEN use aux spray IF letdown or aux spray

- NDT available, THEN use one pzr PORV 16 Stabilize T-hot f

I a. Transfer condenser steam a. IF condenser NOT

.A ~ dump to press control airailable, mode THEN use S/G PORVs

b. Control steam dump as necessary
c. Control AFW as necessary C

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, SQNP ES-0. 2 Unit 1 or 2 Page 8 of 18 Rev. 1 SI-TERMINATION .

STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED '

17 Initiate REP IP-1 ,

a. Notify Operations Duty Specialist within 5 min 18 Check If D/G Should Be Stopped
a. All shutdown boards - a. Attempt to restore offsite energized by offsite power per AOI-35 power
b. Place D/G in standby per SOI-82, Removing D/G From Service After An

., " Emergency Start 6O +

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SQNP ES-0.2 Unit .1 or 2

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- Rev . 1 SI TERMINATION STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTkINED

19. Check CST Level-
a. CST level > 3 ft a. IF' CST level < 3 ft,-

t THEN verify ERCW

, aligned to AFW

b. CST level > 17 ft b. IF CST level < 17 ft, TIIEN attempt to refill CST while continuing with this' instruction-20- Check Intact S/G Levels
a. . Narrow range S/G a. Verify AFW flow and levels > '25% intact S/G levels returning to normal. program b." Control S/G 1evels between -

25% and 50%

21 Check'If Source Range Detectors Should Be Energized

a. Check intermediate range a. WHEN intermediate flux < 10-10amps -10 range flux < 10 amps, THEN ensure source-range detectors  !

energized

b. Ensure source range detectors energized
c. Transfer NR-45 to one source and intermediate . , -

range -

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SQNP ES-0. 2 Unit 1 or 2 Page 10 of 18 Rev. 1 SI TERMINATION STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED l CAUTION: Normal T-avg indication and associated interlocks win be inaccurate during natural circulation or when RCS temp is below 530 F.

22 Check RCP Status

a. At least one RCP running a. Attempt to restart an RCP (loch 2 preferred) f .- per SOI-68.2 IF an RCP can NOT Fe started, THEN verify natural circulation

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-e RCS subcooling S/G press stable or decreasing T-hot stable or decreasing Core exit T/C stable or decreasing T-cold at saturation temp for S/G press IF natural circulation ITOT verified, THEN increase dumping steam -;.

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  • SQNP ES-0.2 Unit 1 or 2 Par;e 11 of 18 Rev. 1 I( -

SI TERMINATION . i STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED -

23 Realign CCS And ERCW

a. Stop CCS Pumps that started from SI signal
b. Stop ERCW Pumps that started from SI signal ,
c. Reset ERCW valve FCV-67-152
d. Position FCV-67-152 from >

35% to desired position '

I CAUTION: If a LOCA or loss of secondary coolant has occurred, then evaluate if cntmt isolation valves and ventilation systems should be returned to normal alignm%

24 Realign Cntmt Isolation Valves

a. Phase A isolation valves per SOI-88.1B
b. Phase B isolation valves per SOI-88.1C 4

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[' SQNP J-ES-0. 2 Unit 1 or 2 Page 12 of 18 r, Rev. 2 l, <

SI TERMINATION -

STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBT INED 25 Realign Cntmt Ventilation Systems

a. Reset entmt vent isolation -
b. EGTS persSOI-65.1 A -

(SOI-G5.2A) and SOI-65.1B (SOI-65. 2B)

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c. Cntmt ventilation per SOI-30.2B and SOI-88.1 A l l
d. Incore inst room per SOI-30.4 '

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e. Cntmt vacuum control per SOI-30.3E

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26 Realign Control' Bldg e

Ventilation Systems

a. Reset control room isolation
b. Control bldg ventilation per SOI-30.1B S

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SQNP

.- ES-0. 2 Unit 1 or 2 j Page 13 of 18 l Rev. 1 j f j

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l\ SI TERMINATION

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STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 27 Realign Aux Bldg Ventilation System .

a. Place aux bldg fans in PULL l TO LOCK '
1) Aux bldg general supply
2) Aux bldg general exhaust \

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3) Fuel area exhaust
b. Reset aux bldg isolation
c. Aux b1dg ventilation per SOI-30.5D
d. ABGTS per SOI-30.6C and

,e C ~ SOI-30.6B 28 Check Cntmt Hydrogen Ignitors

a. Turn off hydrogen ignitors if not required 1

29 Realign Ice Condenser System

a. Align per SOI-61.1 30 Check Main Turbine
a. Bearing oil pumps running (1500 rpm) y
b. Bearing lift pump , ,

running (600 rpm)

c. Place turbine on turning gear after shaft stops SQNP

. ES-0. 2 Unit 1 or 2

. Page 14 of 18 Rev. 1 SI TERMINATION I l

l STEP ACTION / EXPECTED RESPONSE DESPONGE NOT OBTAINED ,

31 , Align MSRs Normal

a. Press RESET on MSR control panel
b. Close HP steam to MSR isolation valves
c. Open starting vents
d. Close operating vents 32 Check Extraction Steam Valves And Drain Valves

( a. Close heaters 1 and 2

, extraction steam valves

b. Open turbine drain valves .
c. Open MFW pump turbine drain valves
d. Locally open extraction drain valves, HS-5-94 33 Shutdown Unnecessary Secondary  ;

Plant Equipment

a. Leave 2 hotwell pumps running
b. Leave 1 condensate booster pump running .
c. Stop DI booster pumps ..
d. Stop heater drain tank pumps and close discharge valves
e. Open exciter field breaker and place voltage regulator in off position

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I SQNP ,

.. ES-0. 2 Unit 1 or 2. 1 Page 15 of 18 ,

Rev. 1  !

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SI TERMINATION I l

l STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED l

4 I

34 Flush BIT Injection Lines l

a. Unlock and open BIT bypass valve 63-697
b. Monitor flushing flow on FI-63-170
c. Adjust FCV-62-89 to maintain s 8 gpm RCP seal injection flow
d. After flushing s 150 gal, close 63-697
e. Relock 63-697 e C f. Adjust FCV-62-89 to

" maintain s 8 gpm RCP seal injection flow 35 Establish BIT Boron Concentration

a. Verify BIT recirc closed FCV-63-38, 41, and 42
b. Open BIT valve to HUT '

HCV-63-573 k

c. Open BIT inlet recire FCV-63-38
d. Place BA transfer pump in slow speed
e. After BAT level has -

decreased by 12% (1000 gal), ,.

then open BIT outlet recirc FCV-63-41 and 42

f. Close BIT valve to HUT HCV-63-573 1

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SQNP

'ES-0.2 Unit 1 or 2 Page 16 of 18

- . Rev. 2 l

1 SI TERMINATION -

STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 36 Verify BIT And RWST Within Limits

a. Locally reset the BIT heaters (Aux Bldg 690 pipe chase)
b. BIT water temp > 145 F
c. BIT low flow alarm cleared
d. RWST level between 370,000

, gal and 375,000 gal I e. RWST temp between 60 F "'

and 105 F 37 Check If Reactor Trip IF reactor trip breakers

[ Breakers Can Be Closed are NOT cycled, f-y a." All SI signals cleared THEN comply with Tech Spec 3.0.3 due or blocked to loss of both trains i

of automatic SI actuation

[ b. Close or cycle reactor trip breakers 38 Reset Following Valves l a, Reset entmt sump isolation u valve l b. Establish RIIR discharge L valve control

1) Place FCV-74-16 and 28 controller to 0%
2) Reset RIIR discharge valves e
3) Ensure FCV-74-16 and 28 - OPEN 7

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SQNP ES-0. 2 Unit 1 or 2 Page 17 of 18

{, Rev. 2 le SI TERMINATION r.

M STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 39 Maintain Stable Plant Conditions

a. RCS press
b. Pzr level 1 -
c. RCS temp
d. Intact S/G levels -

40 Complete Surveillance And Reports

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a.81-268, Verification Of P-4 Interlock

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b. SI-603, High Flux Adjustment

/ After Shutdown i' c.

  • SI-407.2 and SI-415 if reactor power decreased by > 15%
d. SI-38, Shutdown Margin

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e. SI-166.10 if the SI Pumps injected into RCS
f. AI-18, file package 18 for Reactor Trip Report and NRC notification l l

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SQNP

'ES-0. 2 Unit 1 or 2 Page 18 of 18 -

, Rev. 2 ,

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_ SI TERMINATION -

h STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 41 Verify ECCS Not Required '

a. Pzr level > 20% a. Control charging

[50% FOR ADVERSE CNTMT] ~

to restore pzr level I

IF pzr level can NOT E~e maintained, THEN start CCP and/or SI Pumps as necessary. -

Go to

  • E-1, LOSS OF REACTOR OR SECONDARY "

COOLANT I -

b. RCS subcooling > 40 F b. IF RCS subcooling can NOT be maintained,

' l THEN start CCP and/or SI Pumps as necessary.

[ Go to

  • E-1, LOSS OF l " REACTOR OR SECONDARY l'- COOLANT

_ 42 Go To Applicable Plant Instruction

a. ES-0.3, Natural Circulation Cooldown
b. GOI-2, Plant Startup From Hot Standby To Minimum Load
c. GOI-3, Plant Shutdown From Minimum Load to Cold Shutdown Conditions

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