ML20237H735
| ML20237H735 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 06/12/1987 |
| From: | Strickland G, Terpstra G TENNESSEE VALLEY AUTHORITY |
| To: | |
| Shared Package | |
| ML20237H133 | List:
|
| References | |
| ES-.2, ES-0.2, NUDOCS 8708170330 | |
| Download: ML20237H735 (20) | |
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TENNESSEE VALLEY AUTHORITY j
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- SEQUOYAH NUCLEAR PLANT j
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EMERGENCY INSTRUCTION .
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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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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
INCREASING to
- E-1, LOSS OF REACTOR l OR SECONDARY COOLANT
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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:
Allow pzr level
- b. Stop SI Pumps SI Pump i e # ~ IF SI Pumps are required t6 maintain pzr level, THEN start SI Pumps and go to
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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,
[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
- 8 gpm per RCP
~ 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 -
d 1
- 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
- b. RCS press - STABLE.OR can NOT be maintained, INCREASING realign BIT, isolate charging and letdown.
Go to
- a. Open VCT outlet valves FCV-62-132 and 133
- b. Close RWST valves '
FCV-62-135 and 136 14 Check VCT Makeup System
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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-
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 -
- 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
- 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
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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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- 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 -
' 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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- END -
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