ML20237H274
| ML20237H274 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 02/20/1986 |
| From: | Patterson B, Jacqwan Walker TENNESSEE VALLEY AUTHORITY |
| To: | |
| Shared Package | |
| ML20237H133 | List:
|
| References | |
| AOI-15, NUDOCS 8708170126 | |
| Download: ML20237H274 (38) | |
Text
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' p TENNESSEE VALLEY AUTHORITY SEQUOYAH NUCLEAR PLANT ABNORMAL OPERATING INSTRUCTION AOI-15 LOSS OF COMPONENT COOLING WATER Units 1 and 2 Revision 8 PREPARbDBY:
J.
R.
Walker RESPONSIBLE SECTION: /Operationsm /
REVISED BY:
Don D SUBMITTED BY:
- }))
R6sp'onsible Segtion Supervisor
/
PORC REVIEW DATE:
FFR 7 0 foom APPROVED BY:
3c>w
%>-v PlentiManager DATE APPROVED:
FEB 2 01986
~
Reason for revision (include all Instruction Change Form Nos.):
Revised to add section for aligning "B"
train CCS to spent fuel pit h9at exchangers upon loss of "A"
train power.
The last page of this instruction is number:
36
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i e em 870017012607[PDRh7 PDR ADOCK P
ll -
i SEQUOYAM NUCLEAR PLANT PLANT INSTRUCTION REVISION LOG F
ABNORMAL OPERATING INSTRUCTION AOI-15 l~
REVISION Date Pages REASON FOR REVISION (INCLUDE COMMIT-l LEVEL Approved Affected MENTS AND ALL ICF FORM NUMBERS) 3 08/27/79 All
{
s 4
09/12/80 All 9,13,20, 5
12/19/80 27 6
06/18/81 All 21-25, 7
03/07/83 29-31 i
Revised to add section for aligning "B"
1,Added train CCS to spent fuel pit heat exchan-i FEB 20 E88 35,36 gers upon loss of "A"
train power.
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SQNP AOI 15 - Unit'l & 2 l-1 Page 1 pf 1 Revision 8 LOSS OF COMPONENT COOLING WATER Discussion This instruction covers the symptoms, automatic actions, immediate operator
- actions, and subsequent operator actions for loss of component cooling water as listed under following subsections:
A.
Loss of Component Cooling Headers (s)
B.
Loss of Component Cooling Pump (s)
C.
Loss of Component Cooling Heat Exchanger (s)
D.
Loss of Component Cooling Thermal Barrier Booster Pump (s)
- )f-E.
Aligning "B"' Train CCS for' Spent Fuel Pit Cooling Upon Loss of "A" Train Power.
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SQ1TP AOI 15A - Unit 1 & 2 Page l'of 1 Rev. 6 LOSS OF COMPONENT COOLING IIEADER(S)
Discussion This ' instruction covers the symptoms, automatic actions, immediate operator actions, and subsequent operator actions for loss of component cooling water due to the loss of a header due to outleakage.
The loss of various headers will be covered under the following subsections:
AOI 15A.1 - Loss of Miscellaneous ' Equipment IIeader, and Loss of Reactor Building IIcader.
AOI 15A.2 - Loss of Engineering Safeguard Equipment lleader lA or 2A.
AOI 15A.3 -- Loss of Engineering Safeguard Equipment Header IB or 2B.
AOI 15A.4 - Loss of SFP licat Exchanger Supply lleader.
With outleakage greater than makeup capacity, the effected header will be isolated from rest of CCS to prevent loss of the complete system.
The isolation of a par-ticular header will result in loss of component cooling water to various equipment.
A
' 'In some cases the isolation of a particular header will result in loss of component cooling water to a safeguard train. This does not render the safeguard system in-capable of performing its design function since one train of safeguards will remain
- operable, I
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SQNP AOI 15A.1 - Unit 1 & 2 Page 1 of G Rev. 6 LOSS OF MISCELLANE0US EQUIPMENT HEADER e
AND LOSS OF REACTOR BUILDING IIEADER I.
Symptoms A.
Harms 1.
Surge tank demineralized water inlet (A train side) level low 75" (60%)
2.
Surge tank demineralized water outlet (B train side) 1evel low 71" (57%)
18 3.
CCS pumps lA-A and 1B-B discharge pressure low at 40 PSIG 4.
CCS pumps 2A-A and 2B-B discharge pressure low at 40 PSIG e
5.
Floor drain collection tank Hi level indication and alarm on 0-L-2 90% (110")
a 6.
Various miscellaneous equipment outlet low flow or high temperature t
alarms.
8 B.
Indications 1.
CCS heat exchanger "A" inlet pressure decreasing
's 2.
CCS heat exchanger "B" inlet pressure decreasing
.,. r 3.
Surge tank level decreasing 4.
Auto CCS pump (s) running E
5.
Possible increase in flow to reactor building supply header 6.
Possible increase in flow to miscellaneous equipment supply header
'm 7.
Possible increase in temperature of miscellaneous equipment return header and reactor building return header E
8.
Possible decrease in return flow on various miscellaneous equipment, thermal barrier, or excess letdown Htx.
W II.
Automatic Actions A.
Pump selected for auto starts @ 40 PSIG.
W B.
Automatic makeup from demineralized water @ 75" (60%) in surge tank.
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SQNP A0I 15A.1 - Unit 1 & 2 Page 2 of 3 7
Rev. 6 III Immediate Actions
?
Check automatic actions completed; if not, start standby pump and add demineralized makeup as needed.
IV.
Subsequent Actions
)
A.
Notify assistant shift engineer, j
)
1 B.
Determine source of leakage from symptoms.
C.
In the event surge tank level cannot be maintained:
)
1.
When loss of level in surge tank 1A is imminent, start shutting down Unit I reactor.
When loss of level surge tank 2A is imminent, start shutting down Unit 2 reactor.
2.
When surge' tank 1A level reaches O percent and CCS pump discharge pressure starts fluctuating, remove effected CCS pumps (lA & 1B) 7 from service. When surge tank 2A level reaches 0 percent and CCS pump discharge pressure starts fluctuating, remove effected CCS pumps (2A and 2B) from service, s
)
3.
Trip reactor and RCP's, if necessary, and remove effected components i_
from service.
I NOTE:
If CCS water flow to the RCP motor is lost, monitor motor bearing temperature closely and if any upper or lower bearing temperature increases to 200 F., alarm @ 185 F, stop effected
/
RCP(s).
Should this loss occur during accident conditions, the loss of one safeguard train due to the loss of component cool-ing water will.no.t render the safeguard system incapable of p
performing its de' sign function.
Occurrence during cooldown process will only lengthen the cooldown process.
D.
With source of leakage identified as miscellaneous equipment header or r
reactor building header, isolate leak as near leak as possible where leak is on component piping.
3.(1)If not possible to isolate the leak near equipment and it is deter-mined that leak is on reactor building supply header, close following manual valves on effected unit to ccmpletely isolate header:
7 a.70-516 __ Rx building supply header inlet valve b.70-690 __ Return from Rx coolant pumps thermal barrier 70-700 __ Return from Rx coolant pumps oil cooler c.
F d.70-705 __ Return from excess letdown Hx.
(1)
See Table 15A.1A for list of equipment effected by loss of component r
cooling water.
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SQNP AOI 15A.1 - Unit 1 & 2 Page 3 of 3 2
i Rev. 6 l
y IV.
Subsequent Actions (Cont.)
D.
Continued 2.(I)1f on reactor building return header or miscellaneous equipment 3
header, close following valves:
1
)
a.
FCV-70-4 Rx building and misc. equipment supply ~hdr.
inlet vlv b.70-501 Rx building and mixc. equipment return hdr. isol.
v1v E.
In the. event of 'a change in the rated thermal power level exceeding 15 % in one hour, notify the Chem Lab to initiate the conditional 7
portions of SI-407 and SI-415 due to the thermal power change.
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SQNP A0,I 15A.2 - Unit 1 & 2 Page 1 of 4 Rev. 6 LOSS OF ENGINEERING SAFEGUARD EQUIPMENT IIADER 1A or 2A I.
Symptoms A.
Alarms l.
RHR (5 gpm), SI (5 gpm), CHG' (5 gpm), or Containment spray pumps (6 gpm) mechanical seal outlet flow low.
2.
Surge tank demineralized water inlet level low (60%)
3.
Surge tank demineralized water outlet level low (57%) -
4.
CCS pumps 1A-A and 1B-B discharge pressure low at 40 PSIG 5.
CCS pumps 2A-A and 2B-B dischaq,e pressury low at 40 PSIG 6.
Floor drain collection tank Hi level B.
Indications 1.
CCS heat exchanger "A" inlet pressure decreasing
.t 2.
CCS heat exchanger "B" inlet pressure decreasing 3.
Surge tank level decreasing (LI-70-63 and LI-70-99) 4.
Auto. CCS pump (s) running 5.
Possibic increase in flow to engineering safeguard equipment lA header.
(FI-70-1591 6.
Possible increase in temperature of RHR heat exchanger "A" return header temperature.
l II.
Automatic Actions A.
Pump selected for automatic starts @ 40 PSIG.
1 B.
Automatic makeup from demineralized water @ 60% in surge tank.
III. Immediate Actions W
Check automatic start of standby pump and add demineralized makeup as needed.
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o SQNP AOI 15A.2 - Unit 1 & 2 I
Page 2 of 4 Rev. 6 IV.
Subsequent Actions v.
A.
Notify assistant shift engineer.
B.
Deter;nine source of leakage from symptoms.
C.
If surge tank level cannot be maintained:
1.
When loss of level in surge tank 1A is imminent start shutting down m
Unit I reactor. When loss of level in surge tank 2A is imminent start shutting down Unit 2 reactor.
z 2.
When surge tank 1A level reaches 0 percent or CCS pump discharge pressure starts fluctuating, remove effected CCS pumps (lA & IB) from service. When surge tank 2A level reaches 0 percent or CCS pump discharge pressure starts fluctuating, remove effected CCS pumps (2A and 2B) from service.
3.
Trip reactor and RCP's, if necessary, and remove affected components a
from service.
l L
NOTE:
If CCS water flow to the RCP motor.is lost, monitor motor bearing temperature closely and if any upper or lower bearing 1_
temperature increases to 200 F (alarm @ 185 F), stop effected f-RCP's.
e D.
With source of leakage identified as engineering safeguard equipment A header, isolate leak as near leak as possible where leak is on component pi ing.
P s
l 1.
Should leak'be,on engine,ering safeguard equipment A supply header, close the following valves on effected unit:
FCV-70-2 __ Eng. safeguard equip. A hdr. supply valve a.
a b.
FCV-70-156 __ F3R Hx return valve 70-557A __ Centrifugal Charging Pump Seal Hx's return valve c.
d.
70-725A __ Common return valve for SI pump, RHR pump, &
containment spray pump mechanical seal coolers.
27 2.
Should a large leak be on engineering safeguard equipment lA return header, trip the reactor and reactor coolant pumps.
When motor bearing temperatures reach 200 F, trip and lock out CCS pump 1A-A and close
- 7 the following valves:
1-FCV-70-2 __ Eng. safeguard equip. lA hdr. supply valve a.
3 b.
1-FCV-70-34 __ CCS 1A-A & 1B-B pump suction crosstie valve c.
1-70-503A
- T
~~ CCS 1A-A pump suction valve 7
SQNP AOI 15A.2 - Unit 1 & 2 Page 3 of 4 Rev. 6 f'
IV.
Subsequent Actions (Cont) im D.
2.
d.
1-70-501 _ Rx. bldg. & misc. equip. hdr. return valve e.
1-70-544C,_ Surge tank "A" lA side outlet valve f.
Check flow path for 1B-B CCS pump to and from SFP Hx. if SFP cooling is needed.
3.
Should a large leak be on engineering safeguard equipment 2A return f
header, trip the reactor and reactor coolant pumps.
When motor By bearing temperature reaches 200 F, trip and lock out CCS pump 2A-A and close the following valves:
2-FCV-70 Eng. Safeguard Equip 2A Hdr Supply Valve a.
b.
2-FCV-70 CCS 2A-A & 2B-B Pump Suction Crosstie Valve c.
2-70-503A - CCS 2A-A Pump Suction Valve d.
2-70-501 - Rx Bldg. and Misc. equip. Hdr Return Valve I r e.
2-70-544C - Surge tank "B" 2A side outlet viv f.
Check flow path for 2B-B CCS pump to and from SFP Ux if SFP cooling is needed NOTE:
D.1 above results in the loss of component cooling water i_.
to 1A train safeguards (see Table 15A.2 for equipment effected)
D.2 and D.3 above results in the loss of component cooling wate return from all CCS main headers.
(See Table 15A.1A and 15A.2 for equipment effected.)
P l
4.
Refer to Technical Specification 3.7.3.1 for limiting conditions and I
actions.
< r 5.
Implement REP per IP-1 (Engineered Safety Features) as required.
E.
In the event of a change in the rated thermal power level exceeding 15%
~
in one hour, notify the Chem Lab to initiate the conditional portions of SI-407 and SI-415 due to the thermal power change.
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SQNP
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A0I 15A.2 - Unit 1 & 2 Page 4 of 4 Rev. 6 V.
Discussion This instruction covers the symptoms, automatic actions, immediate operator actions, and subsequent operator actions for loss of component cooling water due to leakage of engineering safeguard equipment A header.
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A0I 15A.2 - Unit 1 & 2 i
=
Table 15A.2 Page 1 of 1 Rev. 6 Equipment Effected by Isolation of Engineering
)
Safeguard Equipment Header 1
J Component Action j
i 1.
Centrifugal charging pump A Pump not normally in service; if in mechanical seal heat exchangers service, remove from service and replace (See S0I 62.1).
Pump is j
no longer operable.
2.
Safety injection pump A.
Pump not normally in service, pump
~
mechanical seal heat exchangers is no longer operable.
3.
RHR pump seal water heat exchanger A Pump not normally in service, pump is no longer operable.,
4.
Containment spray pump A oil and Pump not normally in service, pump mechanical seal heat exchangers is no longer operable.
1 5.
RHR heat exchanger A Heat exchanger not normally in service, heat exchanger is no longer operable.
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4 SQNP AOI 15A.3 - Unit 1 & 2 1
Page 1 of 3 Rev. 6 LOSS OF ENGINEERING SAFEGUARD EQUIPMENT HEALER IB or 2B I.
Symptoms A.
Alarms 1.
RHR, SI, CHG, or containment spray pumps mech. seal outlet flow 2.
Surge tank demineralized water-inlet level low 60%
3.
Surge tank demineralized water outlet level low 57%
4.
CCS pumps lA-A and 1B-B discharge pressure low 40 PSIG 5.
CCS pumps 2A-A and 2B-B discharge pressure low 40 PSIG 6.
Fl'oor drain collection tank hi level 90% (110")
7.
" Turbine, auxiliary, or Rx. building flooded" on M-15.
B.
Indications i_
l.
-CCS heat exchanger "A" inlet pressure decreasing, only if A Htx is supplying B safeguard header.
T 2.
CCF heat exchanger "B" inlet pressure decreasing, only if B Htx is supplying B safeguard header.
)
3.
Surge tank level decreasing 4.
Auto CCS pump (s) running
)
5.
Possible increase in flow to engineering safeguard equipment B header 1
6.
Possible increase in temperature of RHR heat exchanger "B"
return header temperature.
1 II.
Automatic Actions A.
Pump selected for auto starts @ 40 PSIG.
)
B.
Automatic makeup from demineralized water @ 60% in surge tank.
).
III. Immediate Actions y
Add demineralized makeup as needed.
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SQNP AOI 15A.3 - Unit 1 & 2 Page 2 of 3 Rev. 6 r
IV.
Subsequent Actions a
A.
Notify assistant shift engineer.
B.
Determine source of leakage from symptoms.
C.
If surge tank level cannot be maintained:
m 1.
When surge tank 1B or 2B level reaches O percent or CCS pump discharae pressure starts fluctuating, remove CCS pump (C-S) from service.
D.
With source of leakage identified as engineering safeguard equ'ipment B header, isolate leak as near leak as possible where leak is on component piping.
1.
Should leak be on engineering safeguard equipment 1B supply header, cl'ose following valves on effected unit:
W 1-FCV-70-3 _ Eng, safeguard equipment 1B hdr. supply valve a.
b.
1-70-153 _ RHR Ex "B" return valve 70-557B _ Centrifugal Changing Pump mech. seal Hx's return valve c.
d.
70-725B _ Common return from S.I. pump, RHR pump and contain-ment spray pump mech. seal Htx's.
2.
Should a large leak be on engineering safeguard equipment B return hdr., close following valves on effected unit:
a.
FCV-70-3 __ Eng. safeguard equip. B hdr. supply valve b.
FCV-70-75 _ Eng, safeguard equip. B return hdr. isol. valve a
70-544B _ Surge tank B train side outlet valve c.
NOTE:
D.1 above results in loss of compenent cooling water to a'
equipment.
(See Table 15A.3A for list of equipment effected).
3.
Refer to Technical Specification 3.7.3.1 for limiting conditions and actions.
E 4.
Implement REP per IP-1 (Engineered Safety Features) as required.
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b SQNP P'
i AOI 15A.3 - Unit 1 & 2 l
Pa g'e 3 of 3 e
Rev. 6 i
1 a
V.
Discussion This instruction covers the symptoms, automatic actions, immediat; operator actions, and subsequent operator actions for loss of component cooling water due to leakage of engineering safeguard equipment B header.,
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SQNP E
AOI 15A.3 - Unit 1 & 2 Table 15A.3A Page 1 of 1 7
Rev. 6 w
Equipment Effected by Isolation of Engineering Safeguard Equipment Header Component Action 9
1.
Centrifugal charging pump B Pump not. normally in service; if mechanical seal heat exchangers in service, remove from service and replace.
(See SOI 62.1).
Pump is no longer operable.-
2.
Safety injection pump B Pump not normally in service.
mechanical seal heat exchangers.
Pump is no longer operable.
J 3.
Ri[R pump seal water heat exchanger B Pump not normally in service.
Pump is no longer operable.
4.
Containment spray pump B oil and Pump not normally in service.
mechanical seal heat exchangers Pump is no longer operable.
5.
RHR heat exchanger B.
Heat exchanger not normally in
.i,
~~~
service.
Heat exchanger is no longer operable, e
6.
Waste evaporator building supply If necessary change supply i
(may not lose supply if to uneffected unit is lined up to B eng. safeguard hdr.
on uneffected unit)
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AOI 15A.4 - Unit 1 &'2 Page 1 of 3 3
Rev. 6-LOSS OF SFP HEAT EXCHANGER SUPPLY HEADER J
I.
Symptoms A.
Alarms
)
1.
Spent fuel pit heat exchanger A or B outlet flow alarm 3000 GPM
)
2.
Spent fuel pit heat exchanger A or B outlet temp. alarm 110' F 3.
Surge tank demineralized water inlet level low 60%
1 4.
Surge tank demineralized water outlet level low 57%
5.
CCS pumps 1A-A and IB-B discharge pressure low 40 PSIG 6.
CCS pumps 2A-A and 2B-B discharge pressure low 40 PSIG
]
7.
Floor drain collection tank hi level indication and 90% (110")
ala rm on L-L-2 8.
Possible alarm "Turb Aux or reac b1dg flooded".
7
(_
D.
Indications
)
1.
CCS heat exchanger "A" inlet pressure decreasing if SFP Htx is being supplied by "A" CCS Htx.
)
2.
CCS heat exch tager "B" inlet pressure decreasing if SFP Htx. is being supplied by "B" CCS Htx.
j t
3.
Surge tank level decreasing 4.
Automatic CCS pump (s) running i
5.
~
Possible increase in tempe:
- e of SFP heat j
exchangers outlet component cooling water.
9 II.
Automatic Actions i
A.
Pump selected for automatic starts at 40 PSIG.
1 I
B.
Automatic makeup from demineralized water at 60% in surge tank.
j T
III. Immediate Actions Check automatic actions completed; if not, start standby pump and add p
demineralized makeup as needed, i
F i.
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____----s--
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<a SQNP
~~
A0I 15A.4 - Unit 1 & 2 Page 2 of 3 Rev. 6 r
=
IV.
Subsequent Actions A.
Notify assistant shift engineer of impending loss of component cooling water.
B.
Determine source of leakage from symptoms.
C.
If surge tank level cannot be maintained:
1.
When loss of level in surge tank is imminent, start shutting down iy reactor.
Wf.cn surge tank level reaches O percent or CCS pump discharge 2.
pressure starts fluctuating, remove effected CCS pumps from service.
3.
Trip reactor and RCP's, if necessary, and remove effected components from service.
NOTE:
If CCS water flow to the RCP motor is lost, monitor motor bearing temperature closely and if any upper or lower bearing temperature increases to 200 F, (alarm at 185 F), stop effected RCP's.
i
~
~
D.
With source of leakage identified as SFP heat exchanger header, close valves FCV-70-197, FCV-70-198, and 1-70-531; check closed FCV-70-193, FCV-70-194, and 2-70-531.
=
NOTE:
"With the SFP heat exchangers isolated and the maximum heat load in the SFP a heatup rate of 5.5 F/hr could be experienced.
Under worst case condit(ons this world allow 10 hours1.157407e-4 days <br />0.00278 hours <br />1.653439e-5 weeks <br />3.805e-6 months <br /> to com-plete repairs before boiling occurs."
E.
In the event of a change in the rated thermal power 1cvel exceeding 15%
in one hour, notify the Chem Lab to initiate the conditional portions of SI-407 and SI-415 due to the thermal power change.
IL P
)
er Y
^
f SQNP A0I 15A.4 - Unit 1 & 2 Page>3 of 3
?
Rev. 6 V.
Discussion This instruction covers the symptoms, automatic actions, immediate operator actions, and subsequent operator actions for loss of component cooling water
'due to leakage of SFP heat exchanger header.
).
7
)
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t 1
7
' i V
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2 SQNP AOI 15B - Unit 1 & 2 Page'l of 2
'^
Rev. 6 LOSS OF COMPONENT COOLING PUMP (S) 3 I.
Symptoms a
A.
Alarms 1.
" Motor tripout" panel 0-M-27B.
p
- 2. ' Component Cooling System pumps lA-A and IB-B discharge pressure lodi at 40 PSIG.
]
3.
Component Cooling System pumps 2A-A and 2B-B discharge pressure low at 40 PSIG.
3 4.
Electrical Control Board recorder " unit 1 shutdown power train A motor tripout."
3 5.
Electrical Control Board recorder " unit 1 shutdown power train B motor tripout."
6.
Electrical Control Board recorder " unit 2 shutdown power train A motor tripout."
t.
~
7.
Electrical Control Board recorder " unit 2 shutdown power train B 3
motor tripout."
8.
Pump seal leakage collection tank Hi level 0-M-27B at elev. 674' 2".
]
9.
Surge tank demineralized water inlet (A train side) level low at.75" (60%).
r 10.
Surge tank demineralized water outlet (B train side) Icvel low at 71" (57%).
P 11.
Various low flow alarms on individual pieces of equipment.
B.
-Indications r
1.
White light on associated breaker control, panel 0-M-27B.
2.
Standby pump running.
7 3.
Component Cooling System HX "A" inlet pressure indicating low 0-M-27B (PI-70-24A).
T 4.
Component Cooling System HX "B" inlet pressure indicating low 0-M-27B (PI-70-17A).
r 5.
Surge tank 1cvel decreasing.
r F
4
...t__._.._
g a.
SQNp Af{ ISB - Unit 1 & 2 Page 2 of 2 i
s Rev. 6 L
II.
Automatic Actions i
s Pump selected for auto starts at 40 PSIG (does not apply to C-S pump.)
III. Immediate Actions Check standby pump on and header pressure above 40 PSIG.
IV.
Subsequent Actions I5 i A.
Notify Assistant Shift Engineer B.
Check component cooling system pressu2e restored to normal. Notify aux bl.dg A.U.0. to check pump and' train on which malfunction occurred.
t
?
C.
Should pressure loss be due to ptup packing failure.or chsing leakage, stop effected pump and isolate leak (see one of the following valve checklists A0I 15B-1 theydh 15B-5.
- s
)
' i 11 D.
Should loss be due to CCS'ptwp\\ trip and/or failure of automatic pump
,3, starting, check breaker control in A-Auto position, inspect breaker and motor for indications of electrical faults.
~
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.y q
E.
Refer to Technica1' Specification 3.7.3.1 for limiting condition for
. operation and actions.
1 NOTE: Two independent CCS loops cannot be maintained with the loss of "A" pump.-
7 F.
Implement REP per IP-1 (Engineered ' Safety: Features) as required.
i V.
Discussion h
g Y
5 This instruction covers the symptoms, automatic actions, immediate operator actions, and subsequent opccator actilons for loss of component cooling water 7
due to loss of component cooling pump (s).
The loss of a component cooling water pump due to breaker trip, pump casing I
rupture, and failure of pump te start when called upon will result in
)
s, decreased pressure and flow throughout the component cooling water syctem.
This will not render the system incapable of perilrming its designed fu.nction since provisions are made for automatically statiing standby pumps on TdW '
2 pressure and failure of operating pump. Means are also provided for isolating the CCW pump from the systein.
1 n
SQNP AOI-15B - Unit 1 & 2
[
Valve Checklist AOI-15B - 1 l
Page l'of 1 Rev. 7 r
Date Operator e
SRO Purpose of Valve Checklist:
ISOLATION OF 1A-A CCS PUMP TO PREVENT LEAKAGE FROM RUPTURED PUMP CASING AND ALIGNMENT OF CCS TO CONTINUE SUPPLYING CCS
- y. Flow Diagram
Reference:
47W859-1 Figure 7 Required Verified By Function Position Valve No.
CCS pump 1A-A discharge valve Closed 1-70-505A CCS pump 1A-A suction valve Closed 1-70-503A CCS pump 1A-A and IB-B suction crosstie valve Open FCV-70-34 CCS pump 1A-A and IB-B discharge crosstie v1v Open 1-70-507 Realign spent fuel pit heat exchanger if reqd, I
k.
l l
1 1
- ~
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3 SQNP AOI-15B - Unit 1 & 2 r
Valve Checklist AOI ISB - 2 Page 1 of 1 Rev. 7 Date Operator l
Y SRO Purpose of Valve Checklist:
ISOLATION OF IB-B CCS PUMP TO PREVENT LEAKAGE FROM RUPTURED PUMP CASING AND ALIGNMENT OF CCS TO CONTINUE SUPPLYING CCS c Flow Diagram
Reference:
47W859-1 l
Figure 6 Required Verified By Function Position Valve No.
CCS Pump 1B-B discharge valve Closed 1-70-505B CCS pump 1B-B suction valve Closed 1-70-503B CCS pump 1A-A and IB-B suction crosstie vlv Open FCV-70-34 CCS pump 1A-A and IB-B discharge crosstie vlv Open 1-70-507 l
Realign spent fuel pit heat exchanger if reqd.
(L b.
L we a u
SQNP A01-15B - Unit 1&2
~
Valve Checklist a0I -15B - 3 Page 1 of 1 Rev. 7 Dace Operator l
SRO I
Purpose of Valve Checklist:
ISOLATION OF 2A-A CCS PUMP TO PREVENT LEAKAGE FROM RUPTURED PUMP CA$ING AND ALIGMIENT OF CCS TO CONTINUE SUPPLYING CCS c
p Flow Diagram
Reference:
47W859-1 Figure 7 e
Required Verified By Function Position Valve No.
F CCS pump 2A-A discharge valve Closed 2-70-505A CCS pump 2A-A suction valve Closed 2-70-503A CCS pump 2A-A and 2B-B suction crosstie v1v Open FCV-70-39 CCS pump 2A-A and 2B-B discharge crosstic v1v Open 2-70-507 l
I b -
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SQNP A01-15B - Unit 1&2 f
Valve Checklist A01-15B - 4 P5ge 1 of 1 Rev. 7 r
Date Operator i
r SRO Purpose of Valve Checklist:
ISOLATION OF 2B-B CCS PUMP TO PREVENT LEAKAGE FROM RUPTURED PUMP CASING AND ALIGNMENT OF CCS TO CONTINUE SUPPLYING CCS 1, Flow Diagram
Reference:
47W859-1 Figure 6
(
Required l
Verified Bv Function Position Valve No.
CCS pump 2B-B discharge valve Closed 2-70-505B CCS pump 2B-B suction valve Closed 2-70-503B r
CCS pump 2A-A and 2B-B suction crosstie vlv Open FCV-70-39 CCS pump 2A-A and 2B-B discharge crosstie v1v Open 2-70-507 i
b6 IL ~
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SQNP-A0I-ISB -' Unit 1 & 2 f
Valve Checklist'A01-15B - 5 Page 1 of 1-Rev. 7 i
}.
Date-Operator SRO I*
Purpose of Valve Checklist:
ISOLATION OF C-S CCS PUMP TO PREVENT LEAKAGE FROM RUPTURED PUMP CASING AND ALIGNMENT OF CCS TO CONTINUE.
SUPPLYING CCS
-4 Flow Diagram
Reference:
47W859-1 l
Figure 5 f-
- Verified By Function Position
' Valve No.
' Required LE CCS pump C-S discharge valve Closed 0-70-505~
CCS pump C-S suction valve Closed 0-70-503
- CCS pump 2A-A and 2B-B suction crosstie v1v Closed FCV-70-39 CCS pump 2A-A and 2B-B discharge crosstie viv Closed 2-70-507 CCS pump C-S and 2B-B suction crosstie v1v Open.
FCV-70-78 CCS pump.C-S and 2B-B suction crosstie viv Open FCV-70-76 I
CCS pump C-S and 2B-B discharge crosstie v1v Open FCV-70-28.
I CCS pump C-S and 2B-B discharge crosstie v1v Open FCV-70-29
. (
n M
k f.
C SQNP AOI 15C - Unit 1 & 2 Page 1 of 3 E
Rev. 6 r
W CCS lEAT EXCIIANGER SIELL OR TUBE RUPTURE I.
Symptoms C
A.
Alarms 1.
Surge tank demineralized water inlet (A train side)
E level low at 75" (60%)
2.
Surge tank demineralized water outlet (B train side) g level low at
'71" (57%)
3.
CCS pumps 1A-A and 1B-B discharge pressure low at 40 PSIG l
4.
CCS pumps 2A-A and 2B-B discharge pressure low at 40 PSIG B.
Indications 1.
CCS IIX "A" inlet pressure decreasing, g
2.
CCS IDC "B" inlet pressure decreasing.
l I:..
3.
Surge tank level decreasing.
I NOTE:
Inleakage from a tube rupture in the "C" heat exchanger can be expected if the "C-S" pump is not operating.
O II.
Automatic Actions e
E A.
Pump selected for auto. starts @ _40 PSIG (does not apply to C-S pump).
B.
Automatic makeup from demineralized water @ 75" (60%) in surge tank.
III. Immediate Actions E
Check automatic actions completed; if not, start standby pump and add demin-eralizer makeup as needed.
B IV Subsequent Actions E
A.
Notify Assistant Shift Engineer.
B.
Determine source of Icakage. A heat exchanger tube rupture may be indi-g cated by:
g
SQNP AOI 15C - Unit 1 & 2 Page 2 of 3
}-
Rev. 6 IV.
Subsequent Actions (Cont.)
}
B.
1.
Increase temperature of ERCW outlet.
2.
Decrease ERCW flow to heat exchanger.
)
3.
Increased noise at heat exchanger.
)-
4.
. ERCW radiation monitor alarm (RE133, 134, 140, 141 at 310 CPM)
C.
Attempt to increase ERCW pressure to stop and minimize leakage into
)
ERCW system from CCS through tube rupture.
D.
With source of leakage identified as heat exchanger tube rupture, valve in standby. heat exchanger (see one of following valve checklists AOI 15C-1 i
through 15C-3). Isolate effected heat exchanger.
CAUTION'i Only two pumps should be operated per heat exchanger.
)
E.
If sorge tank level cannot be maintained:
1.
When loss of level in. urge tank is imminent start shutting down reactor.
=.
2.
When surge tank level reaches O percent and CCS pump discharge 5
pressure starts fluctuating, remove effected CCS pumps from service.
3.
Trip reactor and RCP's, if necessary, and remove effected components 3
from service.
NOTE:
If CCS water flow.to the RCP motor is lost, monitor motor b
bearing temperature closely and if any upper or lower bearing temperature increases to 200 F (alarm at 185 F), stop effected RCP(s).
1 F.
With reactor shut down (hot standby),
continue search for source of leak.
C.
Uith source of loss located, isolate and make preparation for repair.
h.
Refer to Technical Specification 3.7.3.1 for limiting conditions for operation and actions.
]
l 1.
Implement REP per IP-1 (Engineered Safety Features) as required.
J.
In the event of a change in the rated thermal power level exceeding 15%
in one hour, notify the Chem Lab to initiate the conditional portions l
of SI-407 and SI-415 due to the thermal power change.
1 1
l.
1
9 i+..
'e SQNP
'AOI 15C - Unit 1 & 2 Page O of 3
).
Rev. 6
)
V.
Discussion
)
This instruction is addressed to a shell or tube rupture which results in an outleakage of component cooling water. This would result in a decrease of pressure on the component cooling system and decreasing level in the surge
)
tank (s) relative to the magnitude of the leak.
1 l
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[.
SQNP
~
- jil, AOI-15C - Unit 1 & 2 e
Valve Checklist AOI-15C-1
[ff Page 1 of 1 Rev. 7 Date l.
Operator Y'
SR0
~
V Purpose of Valve Checklist: HEAT EXCHANGER "C" REPLACING UNIT 1 HEAT EXCHANGER "A" 4
3F Flow Diagram
Reference:
47W859-1 k -
wF 47W845-2 Figure 2 Required Verified By Function Position Valve No.
..i f
ERCW outlet from CCS heat exchanger "C" Open FCV-67-152 1
I
[.
CCS heat exchanger's inlet header crosstie-Open FCV-70-13 i,
CCS heat exchanger's inlet header crosstie Open FCV-70-23
)l l4 CCS heat exchanger "C" outlet. isolation Open FCV-70-12 j
1-CCS heat exchanger's outlet header crosstie Open FCV-70-9' s
CCS heat exchanger's outlet header crosstie Open FCV-70-10 t
'CCS heat exchanger "A" outlet valve Closed FCV-70-8
)
CCS heat exchanger "A" inlet valve Closed 1-70-510A CCS heat exchanger "A" inlet valve Closed 1-70-510B ERCW outlet from CCS heat exchanger "A" Closed 0-67-551A ERCW outlet to CCS heat exchanger "A" Closed 0-67-546A e
..e 4
4 4
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r SQNP AOI-15C - Unit 1&2 Valve Checklist AOI-15C-2 Page 1 of 1 Rev. 7 Date Operator 2
SRO Purpose of Valve Chec'clist:
ILEAT EXCHANGER "C" REPLACING UNIT 2 HEAT EXCIIANGER "B"
+ Flow Diagram
Reference:
47W859-1 47W845-2 Figure 3 Required Verified By Function Position Valve No.
I ERCW outlet from CCS heat exchanger "C" Open FCV-67-151 l
CCS heat exchanger's inlet header crosstie Open FCV-70-14 CCS heat exchanger's inlet header crosstie Open FCV-70-18 CCS heat exchanger "C" outlet isolation Open FCV-70-12 i
CCS heat exchanger's outlet header crosstie Open FCV-70-195 CCS heat exchanger's outlet header crosstie Open FCV-70-196 CCS heat exchanger "B" outlet valve Closed FCV-70-15 CCS heat exchanger "B" inlet valve Closed 2-70-510A CCS heat exchanger "B" inlet valve Closed 2-70-510B ERCW outlet from CCS heat exchanger "B" Closed 0-67-551B ERCW inlet to CCS heat exchanger "B" Closed 0-67-546B Da m.
mt
SQNP 6
~
A0I-15C - Un;.t 1&2 Valve Checklist A0I-1#,C-3 Page 1 of 1 Rev. 7 Date
\\.
Operator S
SRO Purpose of Valve Checklist: Heat Exchanger "B" Replacing Heat Exchanger "C" Flow Diagram
Reference:
47F859-1 47W845-2 Figure 4 Required y
i Verified Bv Function Position Valve No.
I ERCW outlet from CCS heat exchanger "B" Open 2-FCV-67-146 CCS pump discharge header crosotie Open FCV-70-28 CCS pump discharge header crosstie Open FCV-70-29 CCS 2B and C-S pump crosstie Open FCV-70-76
(
CCS 2B and C-S pump crosstie Open FCV-70-78 CCS heat exchanger's outlet header crosstie Open FCV-70-195 CCS heat exchanger's outlet header crosstie Open FCV-70-196 CCS heat exchanger "C" outlet isolation Closed FCV-70-12 1
CCS heat exchanger "C" inlet isolation Closed 0-70-510A CCS heat exchanger "C" inlet isolation Closed 0-70-510B CCS pump discharge header outlet Closed FCV-70-22 u
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L.
m.
W*
j SQNP AOI 15D - Unit 1 & 2 Page 1 of 3 Rev. 6 LOSS OF COMPONENT COOLING THERMAL BARRIER BOOSTER PUMP (S)
I.
Symptoms 9
i A.
Ala rms 1.
RCP thermal barrier return temperature bi 115? F L
2.
RCP thermal barrier return header flow low 100 GPM 3.
RCP 1 thermal barrier outlet flow low 38 GPM 4.
RCP 2 thermal barrier outlet flow low 38 GPM 5.
RCP 3 thermal barrier outlet flow low 38 GPM 6.
RCP 4 thermal barrier outlet flow low 38 GPM 7.
Reactor MOV.or Vent Bds Train A Undervoltage 8.
Reactor MOV or vent bds train B undervoltage i
B.
Indications 2
l 1.
RCP 1 thermal barrier low flow 2.
RCP 2 thermal barrier low flow 3.
RCP 3 thermal barrier low flow 4.
RCP 4 thermal barrier lou flow i
5.
RCP's thermal barrier low flow i
6.
RCP's thermal barrier temperature hi l
1 7.
Green light on pump controls
[
I i
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l l
1
- I l
l a
i Is l
SQNP 6
~
AOI 15D - Unit 1 & 2 Page 2 of 3 If Rev. 6
[\\
ip II.
Automatic Actions Thermal barrier booster pump selected for automatic starts @
50 GPM decreasing pump discharge flow.
III. Immediate Actions e
Check atitomatic actions completed; if not, start standby thermal barrier booster pump.
'F I
IV.
Subsequent Action 8
A.
Notify assistant shift engineer.
B.
Determine cause of loss; if possible return to service, if not isolate
<y and prepare for maintenance.
C.
Should both thermal barrier booster pumps be lost:
0 Monitor RCP's injection water flow and temperature.
~
1.
No. 1 seal outlet temperature 225*F maximum.
83 2.
Injection H O inlet temperature 130 F maximum.
2 3.
Seal injection H O maintained at 6GPM 2
<y D.
Should RCP lower pump (s) bearing reach 225 F, stop the pump (s).
E.
Monitor RCP injection water flo,w and temperature Should injection water be lost,' place reactor in cold shutdown, maximum RC system temperature 5 130 F.
W
- E 5
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f f
i B
F 1 j W
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i__----_--------_--.
l
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SQNP
~
A0I ISD - Unit 1 & 2 Page23 of 3 2
Rev. 6 2-V.
Discussion-3 This instruction covers the symptoms, automatic actions, immediate operator actions, and subsequent operator actions for loss of component cooling thermal barrier booster pump (s).
te
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1 1
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7 7
7 7
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SQNP A0I-15E - Unit 1 & 2
>Page 1 of 2 Revision 8 ALIGNING "B" TRAIN CCS FOR SPENT FUEL PIT C00 LINO UPON LOSS OF "A" TRAIN POWER l
This instruction provides procedure' for aligning IB-B CCS pump in parallel with l
C-S CCS pump and aligning "B" train CCS to spent fuel pit heat exchengers during the loss of all "A" train power.
(Ref. CATS 85375) 1.
Stop and lock out IB-B CCS pump.
2.
Close breakers for the following "B" train valves on Rx MOV Boad 1B2-B.
a.
FCV-70-34 b.
FCV-70-64 c.
FCV-70-74 d.
FCV-70-26 e.
FCV-70-27 f.
FCV-70-9 3.
Close 1-70-507.
4.
Close FCV-70-34.
5.
Open FCV-70-64.
6.
Open FCV-70-74.
~
7.
Open FCV-70-26.
8.
Open FCV-70-27.
9.
Manually close 1-FCV-70-4.
10.
Manually close 1-FCV-70-2.
11.
Locally verify FCV-70-197 open.
12.
Verify FCV-70-194 closed.
13.
Verify FCV-70-198 open.
14.
Manually open FCV-70-10.
15.
Verify 2-70-531 closed.
16.
Verify 1-70-531 open.
17.
Open FCV-70-9.
-- - Y Acl b l blf e
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.1 ij 3
I SQNP A01-15E
. Unit 1 & 2 1
Page 2 of 2 Revision 8
'l a
- 18.
Start IB-B CCS pump if needed.
-19.
Open breakers to the following valves on Rx MOV Bd. IB2-B.'
r 1
a.
FCV-70-34 b.
FCV-70-64 c.
FCV-70-74 d.
FCV-70-26
. e.
FCV-70-27 f.
FCV-70-9 L.-
A 4
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