tennessee valley authority watts bar nuclear plant ... · rtn tacf 1-06-0005-027 33 06/20/06 2,24,...

TENNESSEE VALLEY AUTHORITY

WATTS BAR NUCLEAR PLANT

ANNUNCIATOR RESPONSE INSTRUCTION

ARI-159-165

SUMPS & CCW

Revision 34

Unit 1

QUALITY RELATED

REQUESTED BY: Scot Newell

SPONSORING ORGANIZATION: Operations

APPROVED BY: A.K. Keefer

Effective Date: 11/15/06

LEVEL OF USE: REFERENCE

WBN

of 48 ARI-159-165

Rev 34

REVISION LOG

REVISIONOR

CHANGENUMBER

EFFECTIVEDATE

AFFECTEDPAGE

NUMBERS DESCRIPTION OF REVISION/CHANGE

28 04/19/05 1, 2,

27

37

46

Incorporated UNIC-1. TACF 1-04-003-027 -Completed, procedure returned to preTACF condition.

Window 162-F: Corrective Action, Step [6] wasadded per UNIC-1. Deleted previsionrevision (Rev. 26) Corrective Action, Step[4] to returned Window to revision 26status due to TACT restoration.

Window 164-D: Deleted prevision revision(Rev. 26) Caution for Corrective Actionsection to returned Window to revision 26status due to TACT restoration.

Appendix A: Deleted SOI-15.01 from previsionrevision (Rev. 26) to returned Appendix Ato revision 26 status due to TACTrestoration.

29 2/10/06 1, 2,24, 25,31, 32

Incorporated TACF 1-06-0005-027 which allowsraising the setpoint for 1-PDIS-27-80, WestCondenser CCW Delta-P Hi (Alarm 162-C) and 1-PDIS-27-70 East Condenser CCW Delta-P Hi(Alarm 163-C) from 17 psid to 20 psid andpotentially up to 24 psid if needed to keep thealarm clear due to the increasing condenserwaterbox flow blockage from degraded and fallencooling tower fill material.

30 3/7/06 1, 2,24, 25,31, 32

RTN TACF 1-06-0005-027

31 3/9/06 1, 2,24, 25,31, 32

Re-incorporated TACF 1-06-0005-027 intoprocedure because TACF was not removed asoriginally planned.

32 03/15/06 1, 2,24, 25,31, 32

RTN TACF 1-06-0005-027

33 06/20/06 2,24, 30, 36,42

Incorporated DCN 52073-A that changescondenser backpressure alarms and limits.

34 11/15/06 37, 38 Added trash rack notes and actions to 164-D &164-E for DCN 52073-A.

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WBN

of 48 ARI-159-165

Rev 34

159-A

SOURCE SETPOINT

LS-77-262E el 726 ft 6 in. increasing (30 in. from overflow)

ADD EQUIP BLDGF & EQ SUMP

LEVELHI

ProbableCause: 1. Add Equip Bldg F&Eq Sump Pumps failed to auto start

2. Excessive leakage into sump

CorrectiveAction: [1] ENSURE ADD BLDG F&EQ Sump Pmps START [1-M-15].

[2] DISPATCH Operator to investigate leakage and equipmentoperation.

References: 1-45W760-77-2, -61-47W610-77-41-47W852-5

WBN

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Rev 34

159-B

SOURCE SETPOINT

LS-77-262F el 723 ft 3 in. decreasing ADD EQUIP BLDGF&EQ SUMP

LEVELLO

ProbableCause: 1. Add Equip Bldg F&Eq Sump Pumps failed to auto stop

CorrectiveAction: [1] ENSURE ADD BLDG F&EQ SUMP PMPs STOP [1-M-15].

References: 1-45W760-77-2, -61-47W610-77-41-47W852-5

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Rev 34

159-C

SOURCE SETPOINT

1-LS-77-125E el 700 ft 9 in. increasing (54 in. from 1-LS-77-126E bottom of sump and 21 in. to overflow)

RX BLDGF&EQ SUMP

LEVELHI

ProbableCause: 1. Rx Bldg F&Eq Sump Pumps failed to auto start

2. Excessive leakage into sump3. Possible RCP oil leak

CAUTION This alarm, in conjunction with an RCP OIL LEVEL alarm, requiresspecial attention. To keep oil from accumulating on Cntmt floor, thePocket Sump is pumped down. The oil in the Rx Bldg F&Eq Sumpmust be kept from entering Radwaste System.

CorrectiveAction: [1] VERIFY RX BLDG F&EQ SUMP level on plant computer (L0471A).

[2] ENSURE RX BLDG F&EQ SUMP PMPs START [1-M-15].[3] DETERMINE cause of HI level.

References: 1-45W760-77-3, -61-47W610-77-41-47W851-1

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159-D

SOURCE SETPOINT1-LS-77-125F el 697 ft 3 in. decreasing (12 in. from1-LS-77-126F bottom of sump) after 8 sec. delay.

RX BLDGF&EQ SUMP

LEVELLO

ProbableCause: 1. Rx Bldg F&Eq Sump Pumps failed to auto stop

CorrectiveAction: [1] ENSURE RX BLDG F&EQ SUMP PMPs STOP [1-M-15].

References: 1-45W760-77-3, -61-47W610-77-41-47W851-1

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Rev 34

159-E

SOURCE SETPOINT

ProbableCause:

CorrectiveAction:

References:

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159-F

SOURCE SETPOINTO2A-43-227B 4% O2 or greater

WASTE GAS COMPRO2 (4%)

HI-HI

ProbableCause: 1. HI O2 at compressor discharge1

2. Loss of power to O2 analyzer

CAUTION Oxygen concentration must be reduced to less than2%

within 48 hours.

CorrectiveAction: [1] STOP all operations that may add waste gas to the waste gas system.

[2] MINIMIZE all operations that may raise vent header pressure.[3] CONTACT Radwaste Operator to perform the following:

[a] STOP and PULL TO LOCK running Waste Gas Compressor.[b] PERFORM Section 6.3 of SOI-77.02, Waste Gas

Disposal System, to place Standby Tank in service.[c] SELECT new Standby Tank.[d] PERFORM Sec 8.7 of SOI-77.02,Waste Gas Disposal System.

References: 1-47W610-43-2PAI-15.01

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160-A

SOURCE SETPOINTLS-77-133E el 673 ft 3 in. increasing (33 in. from overflow)

AUX BLDGF&EQ SUMP

LEVELHI

ProbableCause: 1. Aux Bldg F&Eq Sump Pumps failed to auto START


CorrectiveAction: [1] ENSURE AUX BLDG F&EQ SUMP PMPs START [1-M-15].

[2] NOTIFY Radwaste Operator to check for leakage into sump.

References: 1-45W760-77-5, -61-47W610-77-41-47W852-1

WBN

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Rev 34

160-B

SOURCE SETPOINT

LS-77-133F el 663 ft 3 in. decreasing AUX BLDGF&EQ SUMP

LEVELLO

ProbableCause: 1. Aux Bldg F&Eq Sump Pumps failed to auto stop

CorrectiveAction: [1] ENSURE AUX BLDG F&EQ SUMP PMPs STOP [1-M-15].

[2] DISPATCH Operator to determine cause.

References: 1-45W760-77-4, -5, -61-47W610-77-41-47W483-11-47W852-1

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160-C

SOURCE SETPOINT1-LS-77-410A or 92% (39 in. from bottom of sump)1-LS-77-411A (8 second pickup or reset delay)

��

RX BLDG POCKETSUMPLEVEL

HI

ProbableCause: 1. Water leak in Cntmt

NOTE The plant computer Rx Bldg Pocket Sump Hi Rate Of Rise Alarm and the Rx Bldg PocketSump Inleakage Bias Alarm setpoints can be checked at points U0965, U0966, U0968,and U0969. Leakage detection capability may be maintained by performance of 1-SI-77-3, Containment Pocket Sump Rate Of Rise Determination Using Alternate Means.

CorrectiveAction: [1] CHECK pocket sump level by one or more of the following:

� 1-LI-77-410, RB POCKET SUMP LEVEL [1-M-15].� 1-LI-77-411, RB POCKET SUMP LEVEL [1-M-15].� Plant Computer (L0472A & L0473A).

[2] ENSURE window 159-C, RX BLDG F&EQ SUMP LEVEL HI, NOT LIT.[3] START Pocket Sump Pump(s).[4] IF Pocket Sump rate-of-rise alarms on plant computer, THEN

[a] INITIATE 1-SI-68-32, Reactor Coolant System WaterInventory Balance.

[b] IF RCS leak is NOT suspected, THENEVALUATE the need for entering LCO 3.4.15.

[5] IF Pocket Sump Inleakage Bias alarms on plant computer, THENEVALUATE the need for entering LCO 3.4.15.

[6] IF RCS leak is suspected, THENREFER TO AOI-6, Small Reactor Coolant System Leak,OR AOI-14, Loss Of Rhr Shutdown Cooling

[7] IF either Pocket Sump Alarm setpoint in computer needs revision, THENPERFORM TI-261.77, Plant Computer Containment PocketSump Rate Of Rise Alarm Bias Adjustments.

References: 1-47W610-77-4 1-47W482-21-47W851-1 1-SI-68-32TI-261.77 1-SI-77-3AOI-6 AOI-14

WBN

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160-D

SOURCE SETPOINT1-LS-40-12A or el 700 ft 6 in. increasing1-LS-40-12B ANNULUS SUMP

LEVELHI

ProbableCause: 1. Line break in Annulus

2. Annulus fire protection system actuation

CorrectiveAction: [1] DISPATCH Operator to determine cause, and

INITIATE corrective action.[2] OBTAIN Rad Con support as necessary for surveillance of draining

the Annulus sump and for determining origin of water.[3] OPEN 1-DRV-77-920, ANNULUS DRAIN [el 692, behind Incore Inst

Rm Chiller].[4] IF Fire Protection System actuated, THEN

REFER TO AOI-30, Plant Fires.

References: 1-47W610-40-11-47W851-1AOI-30

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Rev 34

160-E

SOURCE SETPOINT

ProbableCause:

CorrectiveAction:

References:

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160-F

SOURCE SETPOINTO2A-43-227A 2% O2 or greater

WASTE GAS COMPRO2 (2%)

HI

ProbableCause: 1. High O2 at compressor discharge1

2. Loss of power to O2 analyzer

CAUTION: Oxygen concentration must be reduced to less than 2%within 48 hours.

CorrectiveAction: [1] CONTACT Radwaste Operator to perform the following:

[a] STOP and PULL TO LOCK running Waste Gas Compressor.[b] PERFORM Section 6.3 of SOI-77.02, Waste Gas Disposal

System, to place Standby Tank in service.[c] SELECT new Standby Tank.[d] PERFORM Sec 8.7 of SOI-77.02, Waste Gas Disposal System.

References: 1-47W610-43-2SOI-77.02PAI-15.01

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161-A

SOURCE SETPOINT

LS-77-261E el 672 ft 9 in. increasing (39 in. to overflow)

TRITIATEDF&EQ SUMP

LEVELHI

ProbableCause: 1. Tritiated F&Eq Sump Pumps failed to auto start


CorrectiveAction: [1] ENSURE TRITIATED F&EQ SUMP PMPs START [1-M-15].

[2] NOTIFY Radwaste Operator to check for leakage into sump.

References: 1-45W760-77-51-47W610-77-41-47W852-1

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161-B

SOURCE SETPOINT

LS-77-261F el 662 ft 9 in. decreasing TRITIATEDF&EQ SUMP

LEVELLO

ProbableCause: 1. Tritiated F&Eq Sump Pumps failed to auto stop

CorrectiveAction: [1] ENSURE TRITIATED F&EQ SUMP PMPs STOP [1-M-15].

[2] DISPATCH Operator to inspect equipment.

References: 1-45W760-77-5, -61-47W610-77-41-47W852-1

WBN

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161-C

SOURCE SETPOINT1-LS-40-2B el 690 ft 6 in. increasing (18 in. below2-LS-40-2B top of sump)

CONTROL BLDGEAST/WEST SUMP

LEVELHI

R

ProbableCause: 1. Control Bldg East/West Sump Pump(s) failure

2. Flow to sump(s) exceeds pump capacity

CorrectiveAction: [1] DISPATCH Operator to determine cause of alarm.

[2] LOCATE source of influent, andISOLATE, if possible.

[3] IF necessary to drain liquid-filled systems, THENTHROTTLE drain valves.

References: 1-45W760-40-41-47W853-1

WBN

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Rev 34

161-D

SOURCE SETPOINT

ProbableCause:

CorrectiveAction:

References:

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161-E

SOURCE SETPOINT0-PS-44-1 Less than 300 psig0-LS-44-11 el 735’ 4",0-LS-44-6 el 732’ 10",,0-PDIS-44-13 Less than or equal to 18 psid1-PDIS-44-48 Less than or equal to 1.0 psid2-PDIS-44-48 Less than or equal to1.0 psid

HTHW SYSTEMABNORMAL

ProbableCause: 1. Low N2 pressure

2. Expansion tank high level3. Expansion tank low level4. Circ pump off5. Low flow through Aux Bldg preheat coils

CorrectiveAction: [1] DISPATCH Operator to 0-JB-291-218, BLDG HEATING SYS

[el 729 col T11] to determine and correct the cause of the alarm.[2] IF there are no white indicating lights lit on 0-JB-291-218, AND

any Aux Bldg Air-Preheating Circ Pump is running, THENCHECK 1-PDIS-44-48 or 2-PDIS-44-48 as applicable, to determineif low system flow exists.

[3] IF alarm is due to expansion tank low level, THENENSURE expansion tank make-up pump has STARTED andlevel control valve LCV-11 is closed.

[4] IF alarm is due to expansion tank high level, THENENSURE expansion tank make-up pump is STOPPED andlevel control valve LCV-11 is controlling.

[5] INITIATE corrective actions as required by abnormal condition.[6] WHEN the cause of the alarm has been corrected, THEN

RESET alarms at 0-JB-291-218.

References: 1-45W760-44-11-47-W865-1,-2

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161-F

SOURCE0-L-2 0-L-2

RAD WASTE PNLTROUBLE

R

ProbableCause: Alarm on Panel 0-L-2

CorrectiveAction: [1] ENSURE Radwaste Operator responding to Panel 0-L-2 alarm.

References: 1-45B655-15A

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Rev 34

162-A

SOURCE SETPOINT

ProbableCause:

CorrectiveAction:

References:

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162-B

SOURCE SETPOINT1-LS-27-81 El 717’ 6”

WEST CONDOUTLET WTRBOX

LEVELLO

ProbableCause: 1. Malfunction of Nash vent valve

CorrectiveAction: [1] DISPATCH Operator to perform the following:

[a] THROTTLE OPEN 1-VTV-27-518, CCW WEST SIDE

CONDENSER OUTLET WATERBOX VENT, to vent air from waterbox.[b] ENSURE waterbox fully vented, and

CLOSE 1-VTV-27-518.[c] IF Nash vent valve has malfunctioned, THEN

VENT through 1-VTV-27-518 once per shift to keep waterboxfilled, andNOTIFY Work Control to initiate corrective action.

References: 1-47W610-27-21-47W831-1

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162-C

SOURCE SETPOINT1-PDIS-27-80 17 psid

WEST CONDCCW ��P

HI

ProbableCause: 1. Fouled tube sheet or tubes

2. Condenser cleaning system malfunctionCorrectiveAction: [1] DISPATCH Operator to confirm alarm by comparing the following:

� 1-PI-27-67, CCW WEST SIDE CONDENSER INLET PRESSURE[EL 685, T7H].

� 1-PI-27-86, CCW WEST SIDE CONDENSER OUTLETPRESSURE [by Turbine Pit Sump Pumps]

[2] CHECK Amertap System status on 1-XX-55-15 [1-M-15].[3] IF West Side Out of Service lamp is on, AND

alarm confirmed, THENDISPATCH Operator to place system in service perSOI-27.02, Amertap System.

[4] IF West Side In Service lamp is on ANDalarm confirmed, THENDISPATCH Operator to perform the following:[a] CHECK 1-PDIS-27-48, WEST SIDE COND OUTLET STRAINER

DIFF PRESS.[b] IF differential pressure is greater than 10 psid, THEN

DEPRESS BACKWASH CYCLE pushbutton.[c] CHECK ball distributors for clogged balls.

[5] IF condenser backpressure cannot be maintained, THENREFER TO AOI-11, Loss of Condenser Vacuum.

References: 1-47W610-27-21-47W831-1AOI-11, SOI-27.02

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162-D

SOURCE SETPOINT

ProbableCause:

CorrectiveAction:

References:

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162-E

SOURCE SETPOINT

ProbableCause:

CorrectiveAction:

References:

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162-F

SOURCE SETPOINTRelay J-23 in Watts Bar 3500 cfs

Hydro Flow interlock circuit RIVER FLOW LODISCHARGETERMINATED

NOTE 3500 cfs is the flow rate through a single hydro unit at minimumoperating lake level.

ProbableCause: 1. Low river flow

CorrectiveAction: [1] ENSURE 0-FCV-27-97, HOLDING POND ISOL, OPEN.

[2] ENSURE the following valves CLOSED:� 0-FCV-27-100, 54” DIFFUSER A SUP� 0-FCV-27-101, 48" DIFFUSER B SUP

[3] ENSURE any radioactive discharge to CT Blowdown that is inprogress is terminated.

[4] MAINTAIN CT Blowdown Flow less than 44,000 gpm.[5] EVALUATE SCCW system operation per SOI-27.03.[6] IF activity for gross gamma is >5 E-7 �Ci/cc or tritium is

>1 E-5�Ci/cc THEN,DIVERT SGBD to the Hotwell.

References: 55W1381-71-45W760-27-4,-5SOI-27.031-SI-0-2-00, Data Sheet 38

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163-A

SOURCE SETPOINT

ProbableCause:

CorrectiveAction:

References:

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163-B

SOURCE SETPOINT1-LS-27-71 El 717’ 6” EAST COND

OUTLET WTRBOXLEVEL

LO

ProbableCause: 1. Malfunction of Nash vent valve

CorrectiveAction: [1] DISPATCH Operator to perform the following:

[a] THROTTLE OPEN 1-VTV-27-517, CCW EAST SIDECONDENSER OUTLET WATERBOX VENT, to vent air fromwaterbox.

[b] ENSURE waterbox fully vented, andCLOSE 1-VTV-27-517.

[c] IF Nash vent valve has malfunctioned, THENVENT through 1-VTV-27-517 once per shift to keep waterboxfilled andNOTIFY Work Control to initiate corrective action.

References: 1-47W610-27-21-47W831-1

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163-C

ProbableCause: 1. Fouled tube sheet or tubes

2. Condenser cleaning system malfunction

CorrectiveAction: [1] DISPATCH Operator to confirm alarm by comparing the following:

� 1-PI-27-57, CCW EAST SIDE CONDENSER INLETPRESSURE [El 685, T7H].

� 1-PI-27-76, CCW EAST SIDE CONDENSER OUTLETPRESSURE [by Turbine Pit Sump Pumps].

[2] CHECK Amertap System status on 1-XX-55-15 [1-M-15].[3] IF East Side Out of Service lamp is on, AND

alarm confirmed, THENDISPATCH Operator to place system in service perSOI-27.02, Amertap System.

[4] IF East Side In Service lamp is on ANDalarm confirmed, THENDISPATCH Operator to perform the following:[a] CHECK 1-PDIS-27-47, EAST SIDE COND OUTLET

STRAINER DIFF PRESS.[b] IF differential pressure is greater than 12 psid, THEN

DEPRESS BACKWASH CYCLE pushbutton.[c] CHECK ball distributors for clogged balls.

[5] IF condenser backpressure cannot be maintained, THENREFER TO AOI-11, Loss of Condenser Vacuum.

References: 1-47W610-27-21-47W831-1AOI-11SOI-27.02

EAST CONDCCW ��P

HI

SOURCE SETPOINT

1-PDIS-27-70 17 psid

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163-D

SOURCE SETPOINT0-LS-40-6D el 709 ft 6 in.

CCW PMP STAPMP ROOM SUMP

LEVELHI

ProbableCause: 1. Sump pump failure

2. Flow to sump exceeds pump capacity

CorrectiveAction: [1] DISPATCH Operator to determine cause of alarm.

[2] ISOLATE excessive draining.[3] IF draining liquid-filled systems, THEN

THROTTLE drain valves.

References: 1-47W610-40-11-47W853-11

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Rev 34

163-E

SOURCE SETPOINT

ProbableCause:

CorrectiveAction:

References:

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Rev 34

163-F

SOURCE SETPOINT

ProbableCause:

CorrectiveAction:

References:

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Rev 34

164-A

SOURCE SETPOINT

ProbableCause:

CorrectiveAction:

References:

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Rev 34

164-B

SOURCE SETPOINT

ProbableCause:

CorrectiveAction:

References:

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164-C

SOURCE SETPOINTCR5L - Emergency Backwash 20 inches H2O dpCR15 - Cycle Failure System Mode Cycle Failure

COND TUBECLEANING

SYS A/BABNORMAL

ProbableCause: 1. High DP across the Amertap collector screens

2. Failure to proceed through the System Mode Cycle

NOTE The ball collecting cycle does not occur in EmergencyBackwash so Amertap balls will be lost if Emergency Backwashoccurs.

NOTE A system mode cycle failure occurs when the system fails toproceed through a prescribed sequence within the time perioddetermined by the cycle timers.

CorrectiveAction: [1] CHECK Amertap System Status on 1-XX-55-15 [1-M-15].

[2] IF Emergency Backwash on either side is indicated, THEN[a] DISPATCH Operator to check waterbox differential pressure on 1-PDIS-27-70 and -80 [T7H, el. 685].[b] MONITOR condenser backpressure.[c] IF condenser cannot be maintained, THEN

REFER TO AOI-11, Loss of Condenser Vacuum.[3] IF Out of Service on either side is indicated, THEN

[a] DISPATCH Operator to check Amertap Panel for failure indication.[b] IF a system mode cycle failure is indicated, THEN

NOTIFY Work Control to initiate corrective action.

References: Vendor Dwg 75-159-31-01 Sh 9 through 131-45B655-15AAOI-11

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164-D

SOURCE SETPOINT1-LS-27-93B el 730’ 6” (6 inches below top of basin wall and 6 inches above normal level) COOLING TOWER

BASIN LEVELHI

ProbableCause: 1. CT blowdown terminated via closure of all of the following valves:

� 0-FCV-27-97, HOLDING POND ISOL� 0-FCV-27-100, 54” DIFFUSER A SUP� 0-FCV-27-101, 48” DIFFUSER B SUP

2. Misalignment of SCCW supply or discharge valves3. SCCW evolution in progress4. Excessive debris on Trash rack 1-RACK-27-1 and/or 1-RACK-27-3

NOTE If both HI level and LO level (window 164-E) are lit, serious blockages ontrash racks could exist.

CorrectiveAction: [1] REFER TO SOI-24.01 for operation of 1-FCV-24-191, RCW BYPASS

FLOW CONTROL VALVE.[2] CHECK position of 1-FCV-27-97, -100, and -101.[3] ENSURE SCCW supply and discharge valves BOTH open OR

BOTH closed:� 0-FCV-27-112, SUPPLEMENTAL CCW SYSTEM SUPPLY

FLOW CONTROL.� 0-FCV-27-111, SUPPLEMENTAL CCW SYSTEM DISCHARGE

FLOW CONTROL.[4] CHECK Cooling Tower Trash Racks and

CONTACT maintenance to clean trash racks if required.[5] ADJUST 0-FCV-27-112, SUPPLEMENTAL CCW SYSTEM SUPPLY

FLOW CONTROL, as necessary to control basin levels:� REFER TO SOI-27.03, Supplemental Condenser Circulating

Water System.[5] ESTABLISH CT blowdown per SOI-27.01, Condenser Circulating

Water System.

References: 1-47W610-27-2SOI-27.01SOI-27.03

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164-E

SOURCE SETPOINT 1-LS-27-93D el 728’ 9” (27 inches below top of basin wall and 15 inches below normal level)

(16.4 second time delay, for ann. & reset)COOLING TOWER

BASIN LEVELLO

ProbableCause: 1. 1-ISV-27-521, BLOWDOWN WEIR SLUICE GATE, open

2. 1-ISV-27-522, CT SLUICE GATE, open3. Misalignment of SCCW supply or discharge valves4. SCCW evolution in progress5. Excessive debris on cooling tower trash rack 1-RACK-27-3

NOTE Diesel-driven fire pump should be declared INOP. If both HI level (window164-D) and LO level are lit, serious blockages on trash racks could exist.

CorrectiveAction: [1] DISPATCH Operator to ensure proper Sluice Gate alignment.

[2] IF SCCW out of service, THENENSURE 0-ISV-27-500, CT FLUME EQUALIZER, CLOSED.

[3] ENSURE SCCW supply and discharge valves BOTH open ORBOTH closed:� 0-FCV-27-112, SUPPLEMENTAL CCW SYSTEM SUPPLY

FLOW CONTROL.� 0-FCV-27-111, SUPPLEMENTAL CCW SYSTEM DISCHARGE

FLOW CONTROL.[4] CHECK Cooling Tower trash racks, and

CONTACT maintenance to clean trash racks if required.[5] ADJUST 0-FCV-27-112, SUPPLEMENTAL CCW SYSTEM SUPPLY

FLOW CONTROL, as necessary to control basin levels:� REFER TO SOI-27.03, Supplemental Condenser Circulating

Water System.[6] REFER TO SOI-24.01 for operation of 1-FCV-24-191, RCW BYPASS

FLOW CONTROL VALVE.

References: 1-47W610-27-21-47W831-1SOI-27.03

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164-F

SOURCE SETPOINT Oil temperature switch on 90�C CCW Pmp Sta Xfmr A or B CCW PMP STA

XFMRTEMP

HI

ProbableCause: 1. Transformer overload

2. Inadequate ventilation in transformer area3. Fire

CorrectiveAction: [1] DISPATCH Operator to determine affected transformer, cause of

alarm, and condition of transformer.[2] REDUCE loading on transformer with high temperature.[3] INITIATE additional air cooling.[4] IF fire exists, THEN

REFER TO AOI-30, Plant Fires.[5] NOTIFY Work Control to initiate corrective action, if necessary.

References: 1-35W711-11-35W760-225-1AOI-30

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165-A

SOURCE SETPOINT

ProbableCause:

CorrectiveAction:

References:

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165-B

SOURCE30X relays in control circuits for:CCW Pumps 1A, 1B, 1C, or 1DFire Pumps 1A-A, 1B-B, 2A-A or 2B-BRCW Pumps A, B, C, D, E, F,or G

CCW/HPFP/RCWMOTOR

TRIPOUT

ProbableCause: 1. CCW Pumps: Instantaneous overcurrent (50) or timed

overcurrent (51)2. Fire pumps: Amptector operation3. RCW Pumps: Amptector operation

Note If a CCW Pump trips due to 51 relay operation, Window 165-C will alsobe lit.

CorrectiveAction: [1] DETERMINE which motor tripped.

[2] REFER TO GOI-7, Generic Equipment Operating Guidelines.[3] ENSURE adequate pumps in service to replace tripped pump and start

additional pumps, if necessary.[4] IF a Fire Pump has tripped, THEN

REFER TO Tech Specs.[5] IF a Raw Cooling Water Pump has tripped, THEN

REFER TO AOI-46, Loss of Raw Cooling Water.[6] NOTIFY Work Control to initiate corrective action, if necessary.

References: 1-45W600-57-211-45W760-27-1, -21-45W760-26-11-35W760-24-1GOI-7

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165-C

SOURCE51X Relay on the following:CCW Pump 1ACCW Pump 1BCCW Pump 1CCCW Pump 1D

CCWP MOTOROVERLOAD

ProbableCause: 1. High flow for number of pumps in service

2. Motor overload due to mechanical problems

NOTE CCW Pump motor current should be less than 247 amps [1-M-15].

CorrectiveAction: [1] IF a standby CCW Pump is available, THEN

START the standby CCW Pump perSOI-27.01, Condenser Circulating Water System.

[2] IF a standby CCW Pump is NOT available, THEN[a] MONITOR Condenser backpressure.[b] IF condenser cannot be maintained, THEN

REFER TO AOI-11, Loss of Condenser Vacuum.[3] NOTIFY Work Control to initiate corrective action.

References: 1-45W760-27-1, -2SOI-27.01AOI-11

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165-D

SOURCE SETPOINT

1-PDS-24-192A 7 psid RCW BYPASSSTRAINER 1TO U-1 CT

HI ��P

ProbableCause: 1. Dirty strainer

CorrectiveAction: [1] DISPATCH Operator to ensure strainer backwash in progress per

SOI-24.01, Raw Cooling Water System.

References: 1-35W760-24-1SOI-24.01

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165-E

SOURCE SETPOINT0-TS-27-99 90 �F

DIFFUSERTEMP

HI

ProbableCause: 1. Thermal inversion

2. Cooling Tower in bypass mode

CorrectiveAction: [1] IF diffuser inlet temperature reaches 95 �F on 0-TI-27-99 [1-M-15],

THEN[a] TERMINATE any radioactive discharge to CT Blowdown that is

in progress.[b] OPEN 0-FCV-27-97, HOLDING POND ISOL.[c] CLOSE 0-FCV-27-100, 54² DIFFUSER A SUP.[d] CLOSE 0-FCV-27-101, 48² DIFFUSER B SUP.[e] MAINTAIN CT Blowdown Flow less than 37,000 gpm.

[2] ENSURE Cooling Tower aligned for proper operation perSOI-27.01, Condenser Circulating Water System.

[3] NOTIFY Environmental Section to evaluate for NPDES compliance.

References: 1-47W610-27-2SOI-27.01

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165-F

SOURCERelays 86A, 86B, 86C,27AX, 27BX, 27DCorTie breaker (52C) closedwhile in AUTO

CCW PMP STA480V BD

FAIL UV ORTRANSFER

ProbableCause: 1. Undervoltage on bus A or B (board transferred and tie breaker

closed)2. Loss of 250V DC control power3. Overcurrent condition (supply breaker trips, board will not transfer

and tie breaker is locked out)

Note The 86 relays operate due to an overcurrent condition.Relay 86A trips and locks out 52A breaker and locks out 52C breaker.Relay 86B trips and locks out 52B breaker and locks out 52C breaker.Relay 86C trips 52C breaker and locks out 52A, 52B and 52C breakers.The 27AX and -BX relays are operated by relays 27A and -B respectively.Relay 27AX trips 52A and 52C breakers.Relay 27BX trips 52B and 52C breakers,Relay 27DC actuation indicates a loss of DC control power and causes Red CONTROL BUS ENER light to go off.

CorrectiveAction: [1] DISPATCH Operator to check relays and red CONTROL BUS ENER

light to determine cause of alarm.[2] IF cause of alarm is due to loss of DC control power, THEN

REFER TO SOI-225, 480v CCW Pumping Station Supply, totransfer to the alternate supply.

References: 1-35W760-225-1SOI-225

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APPENDIX APage 1 of 2

REFERENCES

A. Instructions

AOI-6, Small Reactor Coolant Leak

AOI-11, Loss of Condenser Vacuum

AOI-14, Loss Of Rhr Shutdown Cooling

AOI-30.1, Plant Fires

GOI-7, Generic Equipment Operating Guidelines

1-SI-68-32, Reactor Coolant System Water Inventory Balance

SOI-24.01, Raw Cooling Water System

SOI-27.01, Condenser Circulating Water System

SOI-27.02, Amertap System

SOI-27.03, Supplemental Condenser Circulating Water System

SOI-62.01, CVCS-Charging and Letdown

SOI-62.06, Boron Disposal System

SOI-68.01, Reactor Coolant System

SOI-77.01, Liquid Waste Disposal

SOI-77.02, Waste Gas Disposal

SOI-225, 480V CCW Pumping Station Board

Setpoint and Scaling Documents

B. TVA Drawings

1-45B655-15A

1-35W711-1

1-35W760-24-1

1-35W760-225-1

1-45W600-57-21

1-45W600-77-1, -2, -6

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APPENDIX APage 2 of 2

REFERENCES

B. TVA Drawings (Continued)

1-45W760-26-1

1-45W760-27-1, -2, -4, -5

1-45W760-40-4

1-45W760-44-1

1-45W760-77-2, -3, -4, -5, -6

1-47W482-2

1-47W483-1

1-47W610-27-1, -2

1-47W610-40-1

1-47W610-43-2

1-47W610-77-4

1-47W831-1

1-47W851-1

1-47W852-1, -5

1-47W853-1, -11

1-47W865-1, -2

55W1381-7

C. Vendor Manuals

None

D. Vendor Drawings

75-159-31-01, Sh 9-13

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SOURCE NOTES

SOURCENOTE SOURCE DOCUMENT SUMMARY

1 NCO950024004 Explosive Gas and Storage TankRadioactivity Monitoring Program