Text

Salem/Operations, S2.OP-SO.125-0005(Q), Rev. 24, 2A 125VDC Bus Operation
	ML110070120
Person / Time
Site:	Salem
Issue date:	11/04/2009
From:	; Public Service Enterprise Group
To:	; Office of Nuclear Reactor Regulation
References
	LR-N10-0355 S2.OP-SO.125-0005(Q), Rev 24
	Download: ML110070120 (55)
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PSEG Internal Use Only Page 1 of 1 PSEG NUCLEAR L.L.C.

SALEM/OPERATIONS S2.OP-SO.125-0005(Q) REV. 24 2A 125VDC BUS OPERATION USE CATEGORY: I Biennial Review Performed: Yes ____ No ____ NA T DCP Packages and Affected Document Numbers incorporated into this revision: None The following OTSCs were incorporated into this revision: None REVISION

SUMMARY

The following changes are a result of DCP 80095831:

[80095831]

C Steps 5.1.15 and 5.4.14, the 125VDC Control Power breakers (2EX1EPX1 and 2EX1EPX2) have been replaced with a single three position selector switch, 2EPX Control Power Switch.

C Steps 5.1.16 and 5.4.15, the 125VDC Control Power breakers (2GX1EPX1 and 2GX1EPX2) have been replaced with two (2) three position selector switches, 2GPX Control Power Switch and 2GPXA Control Power Switch.

C, Section 7.0 and Attachment 4, Section 7.0, have been updated for Independent Verification of selector switch positions (2EPX, 2GPX, and 2GPXA).

IMPLEMENTATION REQUIREMENTS Effective Date: November 4, 2009 DCP 80095831, Pressurizer Heater Bus Replacement

S2.OP-SO.125-0005(Q)

Salem 2 Page 1 of 54 Rev. 24 2A 125VDC BUS OPERATION TABLE OF CONTENTS SECTION TITLE PAGE 1.0 PURPOSE................................................................ 2 2.0 PREREQUISITES.......................................................... 2 3.0 PRECAUTIONS AND LIMITATIONS......................................... 6 4.0 EQUIPMENT/MATERIAL REQUIRED........................................ 8 5.0 PROCEDURE............................................................. 9 5.1 Transferring 2A 125VDC Bus Loads to 2B 125VDC Bus................... 9 5.2 Disconnecting 2A 125VDC Battery from 2A 125VDC Bus................. 20 5.3 Connecting 2A 125VDC Battery to 2A 125VDC Bus...................... 21 5.4 Returning 2A 125VDC Bus Loads to 2A 125VDC Bus.................... 23 5.5 Completion and Review............................................. 35 6.0 RECORDS............................................................... 36

7.0 REFERENCES

............................................................ 36 ATTACHMENTS 125VDC Load Shed................................................. 38 Independent Verification Alternate Power Supply Alignment..................................... 42 CCHX SW Inlet Valve Manual Operations.............................. 47 Independent Verification Breaker & Valve Restoration Alignment................................ 48 Completion Sign-Off Sheet........................................... 53

S2.OP-SO.125-0005(Q)

Salem 2 Page 2 of 54 Rev. 24 1.0 PURPOSE 1.1 To provide instructions necessary to:

Transfer 2A 125VDC Bus Loads to 2B 125VDC Bus Disconnect 2A 125VDC Battery from 2A 125VDC Bus Connect 2A 125VDC Battery to 2A 125VDC Bus Return 2A 125VDC Bus Loads to 2A 125VDC Bus 2.0 PREREQUISITES

___ 2.1 IDENTIFY Sections of this procedure that are NOT to be performed with "N/A".

___ 2.2 REVIEW Components "Off Normal and Off Normal Tagged" list(s) for the system and support system(s) associated with the evolution to be performed in this procedure.

___ 2.3 ENSURE Unit 2 is in Mode 5, 6, or Defueled.

___ 2.4 IF removing 2A 125VDC Bus from service, (removing both 2A1 AND 2A2 125VDC Battery Chargers from service)

THEN:

2.4.1 REVIEW S2.OP-SO.125-0004(Q), 125VDC Ground Detection, for the effects of transferring power sources to the following 125VDC Distribution Cabinets:

2ADC3AX, 2ADC 125VDC 2ADC2AX, 2AADC 125VDC 2.4.2 ESTABLISH conditions specified in Attachment 1 as necessary to support required equipment prior to transferring 2A 125VDC Bus loads to 2B 125VDC Bus to prevent exceeding the one-minute design basis loading on 2B 125VDC Bus.

2.4.3 NOTIFY the Electric System Operator that position indications for 500KV BS 1-9 and 9-10 breakers will become momentarily inoperable during 2ADC3AX, 2ADC 125V Distribution Cabinet, power supply transfers.

S2.OP-SO.125-0005(Q)

Salem 2 Page 3 of 54 Rev. 24 2.4.4 PERFORM Step 2.4.4A OR Step 2.4.4B IAW S2.OP-SO.115-0011(Q),

2A Vital Instrument Bus UPS System Operation:

A.

IF 2A 115V Vital Instrument Bus is to be removed from service, THEN DE-ENERGIZE 2A 115V Vital Instrument Bus, AND REMOVE 2A Vital Instrument Bus UPS System from service.

B.

IF 2A 115V Vital Instrument Bus is to remain in service, THEN PERFORM Step 2.4.4B.1 OR Step 2.4.4B.2:

1.

IF 2A 115V Vital Instrument Bus is to be energized from the AC Line Regulator, THEN:

___ a. TRANSFER 2A 115V Vital Instrument Bus from Inverter to AC Line Regulator.

___ b. DE-ENERGIZE 2A Vital Instrument Bus Rectifier and Inverter with AC Line Regulator supplying the 2A Vital Instrument Bus.

2.

IF 2A 115V Vital Instrument Bus is to be energized from the Inverter with DC Power Supply de-energized, THEN DE-ENERGIZE DC Power Supply from the Inverter with Inverter Supplying 2A Vital Instrument Bus.

S2.OP-SO.125-0005(Q)

Salem 2 Page 4 of 54 Rev. 24

___ 2.5 IF removing 2A 125VDC Bus from service, (removing both 2A1 and 2A2 125VDC Battery Chargers from service)

OR disconnecting 2A 125VDC Battery from 2A 125VDC Bus, (maintaining 2A1 or 2A2 125VDC Battery Charger in service)

THEN:

2.5.1 REVIEW Technical Specifications for applicability:

3.8.2.4, 125 Volt DC Distribution - Shutdown 3.8.2.2, A.C. Distribution - Shutdown 3.7.6 Unit 2, (3.7.6.1 Unit 1) Control Room Emergency Air Conditioning System.

3.7.10 (Units 1 and 2), Chilled Water System Action Statement Tracking Log with respect to current expiration dates and 2A 125VDC Bus outage duration.

2.5.2 INITIATE S1.OP-SO.CAV-0001(Q), Control Area Ventilation Operation for Operation With Unit 2 EACS Out-Of-Service (Maintenance Mode)

(Refer to Step 3.7).

2.5.3 PERFORM the following (70068226):

ENTER T/S 3.7.6, ACTION f (Unit 2 Modes 5-6)

AND T/S 3.7.6.1 ACTION e/f (Unit 1, Modes 1-4/Modes 5-6).

SECURE 2CAA48 OR 2CAA49 CLOSED IAW S2.OP-SO.CAV-0001(Q), Control Area Ventilation Operation.

2.5.4 ENSURE 2B 125VDC Bus is in service.

2.5.5 ENSURE 1B 125VDC Bus is in service to provide control power to 2CW 460V Bus.

2.5.6 ENSURE all redundant equipment required to be OPERABLE, as a result of transferring 2A 125VDC loads to 2B 125VDC Bus OR disconnecting 2A 125VDC Battery from 2A 125VDC Bus, are OPERABLE.

2A 4KV Vital Bus AND 2A 460/230V Vital Buses are inoperable when 2A 125VDC Battery is disconnected from 2A 125VDC Bus (Safety Evaluation S99-055).

2.5.7 ENSURE 22 FHB Exhaust Fan aligned to 2BX1AX5X & 2BX1AX5X*

is aligned to their normal power source (Refer to Step 3.4).

S2.OP-SO.125-0005(Q)

Salem 2 Page 5 of 54 Rev. 24 2.5.8 ENSURE all Temporary Modifications connecting 2B and 2C 125VDC Buses and equipment are removed to maintain electrical train separation and bus operability requirements (Refer to Step 3.4) 2.5.9 ISOLATE Chilled Water System "Non-Essential Heat Loads" as required to support current operating conditions IAW S2.OP-SO.CH-0001(Q),

Chilled Water System Operation.

2.5.10 PERFORM the following actions for 22 Emergency Lighting UPS System:

A.

ENSURE 2BZ1AX, 22 Emergency Lighting Distribution Cabinet is powered from the preferred AC source.

B.

DE-ENERGIZE 22 Emergency Lighting Inverter with preferred AC source supplying 22 Emergency Lighting Distribution Cabinet IAW S2.OP-SO.115-0006(Q), 22 Emergency Lighting UPS System Operation.

C.

C/T 2BDC1AX24, 22 EMERGENCY LIGHTING INVERTER (support transferring 2A 125VDC Bus loads to 2B 125VDC Bus).

2.5.11 IF 2A 230V Vital Bus is to remain energized, THEN:

A.

ALIGN 2A 4KV Vital Bus power supply as required to support any SPT maintenance activities planned during the battery maintenance window IAW S2.OP-SO.4KV-0001(Q), 2A 4KV Vital Bus Operation.

(Refer to Step 3.9).

B.

PERFORM the following IAW S2.OP-SO.115-0005(Q),

21 Emergency Lighting UPS System Operation:

1.

IF 2AZ1AX, 21 Emergency Lighting Distribution Cabinet (2ELD-A),

is energized from 21 Emergency Lighting Inverter, THEN TRANSFER 21 Emergency Lighting Distribution Cabinet from 21 Emergency Lighting Inverter to Preferred AC Source.

2.

DE-ENERGIZE 21 Emergency Lighting Inverter with Preferred AC Source supplying 21 Emergency Lighting Distribution Cabinet.

2.5.12 IF 2A 460/230V Bus outage is planned concurrent with 2A 125VDC Battery outage, THEN PLACE 2A2 125VDC Battery Charger in service IAW S2.OP-SO.125-0001(Q), 2A 125VDC Battery Charger Operation.

___ 2.6 IF Section 5.3, Connecting 2A 125VDC Battery to 2A 125VDC Bus is to be performed, THEN ENSURE 2A1 OR 2A2 125VDC Battery Charger is available.

___ 2.7 IF Section 5.4, Returning 2A 125VDC Bus Loads to 2A 125VDC Bus is to be performed, THEN ENSURE no maintenance or testing is in progress on 2A 125VDC Bus.

S2.OP-SO.125-0005(Q)

Salem 2 Page 6 of 54 Rev. 24 3.0 PRECAUTIONS AND LIMITATIONS

___ 3.1 Transferring 2ADC2AX, 2AADC 125VDC Distribution Cabinet power supply will result in the following:

3.1.1 Containment Radiation Monitor sample valves 2VC8 and 2VC12 will close.

3.1.2 Letdown Heat Exchanger cooling control valve 2CC71 will close.

3.1.3 Pressurizer Power Operated Relief valve 2PR1 will close.

3.1.4 21SW122 will receive a sealed in CLOSE signal. 21SW122 will be required to be reset when 2AADC 125VDC Distribution Cabinet is re-energized.

(43-1 switch, 21 CCHX room)

___ 3.2 Transferring 2ADC2AX, 2AADC Distribution Cabinet, power supply to 2B 125VDC Bus will result in the following:

3.2.1 POPS CH I and CH II solenoid valves will be powered from the same bus, rendering one channel inoperable. A subsequent failure of 2B 125VDC Bus will render both channels inoperable. Establishing a RCS vent path should be evaluated prior to transferring the power supply. (Refer to T/S 3.4.10.3.)

3.2.2 21SW122 and 22SW122 will be powered from the same bus. A subsequent failure of 2B 125VDC Bus will isolate service water from both Component Cooling Heat Exchangers. To preclude this situation:

A.

IF 21 CCHX is to remain in-service, THEN 21SW122 will be placed in mechanical MANUAL to maintain CCW temperature and to ensure 10,000 gpm is NOT exceeded.

B.

IF 22 CCHX is to remain in-service, THEN 22SW122 will be placed in mechanical MANUAL to maintain CCW temperature and to ensure 10,000 gpm is NOT exceeded.

3.2.3 An Operator Action Log will be initiated IAW SH.OP-DL.ZZ-0027(Q),

Temporary Reading Log & Log Supplement, to maintain Service Water flow to the in-service CCHX <10,000 gpm, AND Component Cooling temperature within 3°F of the desired temperature as indicated on 2TA5074 (2TA5072).

The log will direct action to manually throttle the associated valve(s),

as required to maintain parameters.

S2.OP-SO.125-0005(Q)

Salem 2 Page 7 of 54 Rev. 24

___ 3.3 An electrical AC bus Train is inoperable when its respective inverter is NOT in its normal alignment. In Modes 5 and 6, normal alignment means that the respective inverter is aligned to an operable diesel generator and connected to its respective DC bus Train (Technical Specification 3.8.2.2).

___ 3.4 When transferring distribution cabinet power supplies, each evolution should be carefully examined to ensure required electrical train separation and operability requirements are maintained since jumpers may be installed throughout the vital and non-vital AC and DC electrical distribution systems.

___ 3.5 The Emergency Diesel Generator (EDG) Turbo Boost will actuate when 125VDC control power is cycled on an operating service water pump with the associated EDG in operation (PR990419147).

___ 3.6 Any system or portion of a system which is NOT aligned to its normal 125VDC power supply cannot be considered OPERABLE unless an evaluation is performed that demonstrates the capability of the system to meet single failure criteria (SER Supplement 3, Section 8.3.2).

___ 3.7 The Control Area Ventilation System is to be placed in Operation With Unit 2 EACS Out-Of-Service (Maintenance Mode) when 2A 125VDC Battery is disconnected from its bus. 21 EACS Fan and CRIX relay (Train A) is inoperable during the 2A 125VDC maintenance window [80069101].

___ 3.8 An Operator should be stationed at the 104 Panel to maintain control of Rad Waste during 125VDC Distribution Cabinet power supply transfers.

___ 3.9 Transferring 2A 4KV Vital Bus power supply during the 2A 125VDC Battery maintenance window will result in a momentary de-energization of the associated 115VAC bus and will cause spurious component actuation.

___ 3.10 The following 500KV breaker regular protection circuits and trip coils are powered from 2A 125VDC Bus:

500KV BS 1 Regular Protection Circuit - Trip Coil 1 500KV BS 9 Regular Protection Circuit - Trip Coil 1 As a result, all work involving testing or maintenance on the following back-up protection circuits and trip coils, powered from 2B 125VDC Bus, should be suspended to prevent inadvertent loss of breaker trip capability during periods when 2A 125VDC Bus is powered solely from a battery charger:

500KV BS 1 Back-up Protection Circuit - Trip Coil 2 500KV BS 9 Back-up Protection Circuit - Trip Coil 2

S2.OP-SO.125-0005(Q)

Salem 2 Page 8 of 54 Rev. 24

___ 3.11 Any system or portion of a system which is NOT aligned to its normal 125VDC power supply cannot be considered OPERABLE unless an evaluation is performed that demonstrates the capability of the system to meet single failure criteria (SER Supplement 3, Section 8.3.2). The following components have been evaluated for operation in Modes 5, 6 or Defueled, and may be considered OPERABLE when the 2A 125VDC Battery Disconnect Switch (2ADC1AX39) is OPEN, OR the component is aligned to its backup 125VDC power supply:

Chilled Water System components [80086263]:

C 21 Chiller - The 115VAC control circuit is powered from 2AX1AX13X, 21 Chiller. The compressor will continue to run and perform its protective function on a loss of 2A 125VDC Bus.

C 21 Chilled Water Pump - The 115VAC control circuit is powered from 2AY3AX2H, 21 Chilled Water Pump. The pump will continue to run and perform its protective function on a loss of 2A 125VDC Bus.

C Chilled Water Isolation valves (1CH150/2CH30) - The valves fail closed and perform their protective function on a loss of 2A 125VDC Bus.

21 FHB Exhaust Fan - The control circuit has been evaluated and it has been determined that 125VDC control power is NOT required for the system to perform its protective function. The fan will continue to run on a loss of 125VDC control power [Safety Evaluation S99-055].

21 RHR Pump - Control power must be supplied by a 125VDC Battery Charger.

This configuration places the plant in a more vulnerable position for a loss of RHR and should be assessed IAW SC.OM-AP.ZZ-0001(Q),

Shutdown Safety Management Program [80065730].

4.0 EQUIPMENT/MATERIAL REQUIRED None

S2.OP-SO.125-0005(Q)

Salem 2 Page 9 of 54 Rev. 24 5.0 PROCEDURE 5.1 Transferring 2A 125VDC Bus Loads to 2B 125VDC Bus 5.1.1 CLOSE the following breakers, for equipment to remain in service (2BDC1AX 125VDC Bus, Elev. 84N Swgr Room):

2BDC1AX13, NO. 2E & 2H 4KV BUSES CONTROL POWER 2E (REG), 2H (EMER) 2BDC1AX30, 2A 4KV VITAL BUS EMERGENCY CONTROL POWER 5.1.2 IF a 2A 125VDC Bus outage is planned (both 2A 125VDC Battery Chargers are to be removed from service),

THEN CLOSE the following breakers, for equipment to remain in service:

2BDC1AX19, 2AADC 125VDC DISTRIBUTION CABINET EMERGENCY POWER 2BDC1AX25, 2ADC 125VDC DISTRIBUTION CABINET EMERGENCY POWER 2BDC1AX29, NO. 2G & 2E 460V BUSES CONTROL POWER 2G (REG), 2E (EMER) 2BDC1AX35, 2A 460V VITAL BUS EMERGENCY CONTROL POWER 5.1.3 ENSURE the following breakers are CLOSED for equipment to remain in service (2BDC1AX 125VDC Bus, Elev. 84N Swgr Room):

2BDC1AX10, NO. 2H & 2F 460V BUSES CONTROL POWER 2H (REG), 2F (EMER) 2BDC1AX12, NO. 2G & 2F 4KV BUSES CONTROL POWER 2G (REG), 2F (EMER) 2BDC1AX20, 2BBDC 125VDC DISTRIBUTION CABINET REGULAR POWER 2BDC1AX26, 2BDC 125VDC DISTRIBUTION CABINET REGULAR POWER 2BDC1AX31, 2B 4KV VITAL BUS REGULAR CONTROL POWER 2BDC1AX36, 2B 460V VITAL BUS REGULAR CONTROL POWER

S2.OP-SO.125-0005(Q)

Salem 2 Page 10 of 54 Rev. 24 5.1.4 ENSURE the following breakers are OPEN (2ADC1AX 125VDC Bus, Elev. 84N Swgr Room):

2ADC1AX10, NO. 2F & 2H 460V BUSES CONTROL POWER 2F (REG), 2H (EMER) 2ADC1AX12, NO. 2F & 2G 4KV BUSES CONTROL POWER 2F (REG), 2G (EMER) 2ADC1AX20, 2BBDC 125VDC DISTRIBUTION CABINET (EMERGENCY) 2ADC1AX26, 2BDC 125VDC DISTRIBUTION CABINET (EMERGENCY) 2ADC1AX31, 2B 4KV VITAL BUS CONTROL POWER (EMERGENCY) 2ADC1AX36, 2B 460V VITAL BUS CONTROL POWER (EMERGENCY)

NOTE Steps 5.1.5 through 5.1.16 may be performed in any order or concurrently at the SM/CRS discretion. Steps 5.1.10 through 5.1.16 are only performed when a 2A 125VDC Bus outage is planned.

5.1.5 TRANSFER 2A 4KV Vital Bus 125VDC control power, as follows (2A 4KV VITAL BUS 4KV PT's Cubicle rear):

A.

NOTIFY NCO that 2A 4KV Bus control power is to be transferred from 2A 125VDC Bus to 2B 125VDC Bus.

B.

OPEN 2AD1AXX1, 2A 4KV VITAL BUS REG CONTROL POWER FROM 2ADC30.

C.

OPEN 2AD1AXX3, 2A 4KV VITAL BUS REG ALARM POWER FROM 2ADC30.

D.

CLOSE 2AD1AXX2, 2A 4KV VITAL BUS EMER CONTROL POWER FROM 2BDC30.

E.

CLOSE 2AD1AXX4, 2A 4KV VITAL BUS EMER ALARM POWER FROM 2BDC30.

F.

Notify NCO to ENSURE the following:

Aux. Annunciator Point 0519, 2A 4KV VITAL BUS, LOSS OF 125VDC, alarmed and cleared.

Aux. Annunciator Point 0530, 2A 4KV VITAL BUS, LOSS OF NORM 125VDC, is in alarm.

Aux. Annunciator Point 0531, 2A 4KV VITAL BUS CIRCUIT ENERGIZED, is in alarm.

S2.OP-SO.125-0005(Q)

Salem 2 Page 11 of 54 Rev. 24 5.1.6 TRANSFER 2CW 460V Bus 125VDC control power, as follows:

CAUTION During transfer of 125VDC control power to 2CW 460V Bus, 2CW breakers will not trip on fault conditions, and cannot be remotely operated. Operators should be stationed at 2CW 460V Bus and Elev. 84N Switchgear Rooms to facilitate the quick transfer of 2CW Bus control power.

A.

NOTIFY NCO that 2CW 460V Bus control power is to be transferred from 2A 125VDC Bus to 1B 125VDC Bus.

B.

OPEN 2ADC1AX15, 2CW 460V BUS CONTROL POWER (REGULAR),

(2ADC1AX 125VDC Bus, Elev. 84N Swgr Room).

C.

CLOSE 1BDC1AX15, 2CW 460V BUS EMERGENCY CONTROL POWER, (Unit 1, 1BDC1AX 125VDC Bus, Elev. 84N Swgr Room).

D.

OPEN 2CWX1CWX1, 2CW 460V BUS REGULAR CONTROL POWER FROM 2ADC15, (Unit #2 Circ. Water Intake Structure 480V Substation, 2CW-460-PTS-S cabinet).

E.

CLOSE 2CWX1CWX2, 2CW 460V BUS EMERGENCY CONTROL POWER FROM 1BDC15 (Unit #2 Circ. Water Intake Structure 480V Substation, 2CW-460-PTS-S cabinet).

F.

IF LOSS OF DC, UNDERVOLTAGE OR TX HIGH PRESSURE indicating light is illuminated, THEN:

1.

PRESS INDICATING LIGHT RESET LOSS OF DC, UNDERVOLTAGE OR TX HIGH PRESSURE pushbutton.

2.

ENSURE LOSS OF DC, UNDERVOLTAGE OR TX HIGH PRESSURE indicating light is extinguished.

G.

Notify NCO to ENSURE Aux. Annunciator Point 0810, 2CWI 460V BUS/LOSS OF VOLTAGE, alarmed and cleared.

S2.OP-SO.125-0005(Q)

Salem 2 Page 12 of 54 Rev. 24 5.1.7 TRANSFER 2H 4KV Group Bus 125VDC control power, as follows (2H 4KV Group Bus PT Cubicle):

A.

NOTIFY NCO that 2H 4KV Bus control power is to be transferred from 2A 125VDC Bus to 2B 125VDC Bus.

B.

OPEN 2HD1TBX1, 2H 4KV GROUP BUS REG CONTROL POWER FROM 2ADC13.

C.

CLOSE 2HD1TBX2, 2H 4KV GROUP BUS EMER CONTROL POWER FROM 2BDC13.

D.

Notify NCO to ENSURE Aux. Annunciator Point 0661, 2H 4KV GROUP BUS, LOSS OF 125VDC, alarmed and cleared.

5.1.8 TRANSFER 2E 4KV Group Bus 125VDC control power, as follows (2E 4KV Group Bus PT Cubicle):

A.

NOTIFY NCO that 2E 4KV Bus control power is to be transferred from 2A 125VDC Bus to 2B 125VDC Bus.

B.

OPEN 2ED1TBX2, 2E 4KV GROUP BUS EMER CONTROL POWER FROM 2ADC13.

C.

CLOSE 2ED1TBX1, 2E 4KV GROUP BUS REG CONTROL POWER FROM 2BDC13.

D.

Notify NCO to ENSURE Aux. Annunciator Point 0666, 2E 4KV GROUP BUS, LOSS OF 125VDC, alarmed and cleared.

5.1.9 IF a 2A 125VDC Bus outage is NOT planned (2A1 OR 2A2 125VDC Battery Charger is to remain in service),

THEN MARK Steps 5.1.10 through 5.1.16 as N/A.

5.1.10 TRANSFER 2A 460V Vital Bus 125VDC control power, as follows (2A 460V Bus):

A.

NOTIFY NCO that 2A 460V Vital Bus control power is to be transferred from 2A 125VDC Bus to 2B 125VDC Bus.

B.

OPEN 2AX1AXX1, 2A 460V VITAL BUS REG CONTROL POWER FROM 2ADC35.

C.

CLOSE 2AX1AXX2, 2A 460V VITAL BUS EMER CONTROL POWER FROM 2BDC35.

D.

Notify NCO to ENSURE Aux. Annunciator Point 0785, 2A 460V VITAL BUS, LOSS OF VOLTAGE, alarmed and cleared.

S2.OP-SO.125-0005(Q)

Salem 2 Page 13 of 54 Rev. 24 5.1.11 TRANSFER 2E 460V Bus 125VDC control power, as follows (2E 460V Bus):

A.

NOTIFY NCO that 2E 460V Bus control power is to be transferred from 2A 125VDC Bus to 2B 125VDC Bus.

B.

OPEN 2EX1AXX1, 2E 460 VOLT BUS REGULAR CONTROL POWER FROM 2ADC29.

C.

CLOSE 2EX1AXX2, 2E 460 VOLT BUS EMERGENCY CONTROL POWER FROM 2BDC29.

D.

Notify NCO to ENSURE Aux. Annunciator Point 0081, 2E 460V BUS, LOSS OF VOLTAGE, alarmed and cleared.

5.1.12 TRANSFER 2G 460V Bus 125VDC control power, as follows (2G 460V Bus):

A.

NOTIFY NCO that 2G 460V Bus control power is to be transferred from 2A 125VDC Bus to 2B 125VDC Bus.

B.

OPEN 2GX1AXX2, 2G 460 VOLT BUS EMERGENCY CONTROL POWER FROM 2ADC29.

C.

CLOSE 2GX1AXX1, 2G 460 VOLT BUS REGULAR CONTROL POWER FROM 2BDC29.

D.

Notify NCO to ENSURE Aux. Annunciator Point 0084, 2G 460V BUS, LOSS OF VOLTAGE, alarmed and cleared.

5.1.13 TRANSFER power to 2ADC3AX, 2ADC 125VDC Distribution Cabinet, as follows (Elev. 84N Swgr Room):

A.

NOTIFY NCO that power to 2ADC3AX 125VDC Distribution Cabinet is to be transferred from 2A 125VDC Bus to 2B 125VDC Bus.

B.

OPEN 2ADC3AXX1, 2ADC DISTRIBUTION CABINET REGULAR POWER FROM 2ADC25.

C.

CLOSE 2ADC3AXX2, 2ADC DISTRIBUTION CABINET EMERGENCY POWER FROM 2BDC25.

D.

Notify NCO to ENSURE Aux. Annunciator Point 0036, 2ADC 125VDC DISTR. CABINET, LOSS OF VOLT, alarmed and cleared.

S2.OP-SO.125-0005(Q)

Salem 2 Page 14 of 54 Rev. 24 5.1.14 TRANSFER power to 2ADC2AX, 2AADC 125VDC Distribution Cabinet, as follows (Relay Room):

A.

IF 21 CCHX is to remain in service, THEN:

1.

RECORD Service Water flow through 21 CCHX:

2FA3891 gpm 2.

RECORD 21 CCHX outlet temperature:

2TA5072 °F 3.

NOTIFY NCO that 21SW122, CC HX SW INLET VLV, is to be locally disengaged from AUTO control.

4.

ENGAGE 21SW122 IAW Attachment 3, Section 1.0.

5.

THROTTLE 21SW122 to maintain flow and temperature recorded in Steps 5.1.14A.1 and 5.1.14A.2.

6.

IMPLEMENT Operator Action log IAW SH.OP-DL.ZZ-0027(Q) for 21SW122 Manual Control.

B.

IF 22 CCHX is to remain in service, THEN:

1.

RECORD Service Water flow through 22 CCHX:

2FA3892 _______________ gpm 2.

RECORD 22 CCHX outlet temperature:

2TA5074 _______________ °F 3.

NOTIFY NCO that 22SW122, 22 CC HX SW INLET VLV, is to be locally disengaged from AUTO control.

4.

ENGAGE 22SW122 IAW Attachment 3, Section 1.0.

5.

THROTTLE 22SW122 to maintain flow and temperature recorded in Steps 5.1.14B.1 and 5.1.14B.2 6.

IMPLEMENT Operator Action log IAW SH.OP-DL.ZZ-0027(Q) for 22SW122 Manual Control.

(Step continued on next page)

S2.OP-SO.125-0005(Q)

Salem 2 Page 15 of 54 Rev. 24 5.1.14 (Continued)

C.

NOTIFY NCO that power to 2ADC2AX 125VDC Distribution Cabinet is to be transferred from 2A 125VDC Bus to 2B 125VDC Bus.

NOTE The following valves will close when 2ADC2AX, 2AADC 125VDC Distribution Cabinet, is de-energized during power supply transfers:

Containment Radiation Monitor sample valves 2VC8 and 2VC12 Letdown Heat Exchanger CC control valve 2CC71 Pressurizer Power Operated Relief valve 2PR1 21 CCHX Service Water inlet valve 21SW122 (when in AUTO)

D.

Notify NCO to PERFORM the following:

1.

OPEN Containment APD Sample Backup Isolation Valves.

___ 2VC13, RMS SAMPLE SUCT VLV

___ 2VC14, RMS SAMPLE SUCTION VLV

___ 2VC9, RMS SAMPLE DISCHARGE VLV

___ 2VC10, RMS SAMPLE DISCHARGE VLV 2.

CLOSE Containment APD Sample Regular Isolation Valves:

___ 2VC11, RMS SAMPLE INLET VLV

___ 2VC12, RMS SAMPLE INLET VLV

___ 2VC7, RMS SAMPLE OUTLET VLV

___ 2VC8, RMS SAMPLE OUTLET VLV 3.

SECURE Letdown IAW S2.OP-SO.CVC-0001(Q),

Charging, Letdown, and Seal Injection.

4.

EVALUATE Technical Specification 3.4.10.3 (Refer to Step 3.2.1).

(Step continued on next page)

S2.OP-SO.125-0005(Q)

Salem 2 Page 16 of 54 Rev. 24 5.1.14 (Continued)

E.

OPEN 2ADC2AXX1, 2AADC 125VDC DISTRIBUTION CABINET REGULAR POWER FROM 2ADC19.

F.

CLOSE 2ADC2AXX2, 2AADC 125VDC DISTRIBUTION CABINET EMERGENCY POWER FROM 2BDC19.

G.

Notify NCO to PERFORM the following:

1.

ENSURE Aux. Annunciator Point 0026, 2AADC 125VDC DISTRIBUTION CABINET, LOSS OF VOLT.,

alarmed and cleared.

2.

OPEN Containment APD Sample Regular Isolation Valves:

___ 2VC11

___ 2VC12

___ 2VC7

___ 2VC8 3.

CLOSE Containment APD Sample Backup Isolation Valves:

___ 2VC13

___ 2VC14

___ 2VC9

___ 2VC10 4.

ESTABLISH Letdown IAW S2.OP-SO.CVC-0001(Q),

Charging, Letdown, and Seal Injection.

H.

RESET 21SW122, 21 CCHX SW INLET VLV, by momentarily placing the 43-1 switch to AUTO (located in 21 CCHX Room, Aux Bldg).

I.

IF 21 CCHX is in service, THEN PERFORM Independent Verification IAW Attachment 2, Section 1.0.

J.

IF 22 CCHX is in service, THEN PERFORM Independent Verification IAW Attachment 2, Section 2.0.

S2.OP-SO.125-0005(Q)

Salem 2 Page 17 of 54 Rev. 24 5.1.15 IF the 2EP Pressurizer Heater Bus is NOT C/T IAW Attachment 1, THEN:

NOTE Two operators will be required to minimize the time Pressurizer Heater Bus breakers are without tripping capability.

A.

ENSURE 2EX1EP2EPX#, 2EP 480 PZR HTR BUS MN BKR CTR PWR is in the NORMAL 2ADC9 position (78N EPA).

B.

NOTIFY the NCO that 2EP Pressurizer Heater Bus is to be transferred from 2ADC1AX to 2BDC1AX, AND to expect 2EP 480V PZR HTR BUS/LOSS OF 125VDC CONTR VOLT alarm.

C.

OPEN 2ADC1AX9, 2EP (REG) & 2GP (EMER) PZR HTR BUSES CONTROL POWER.

D.

CLOSE 2BDC1AX9, 2GP (REG) & 2EP (EMER) PZR HTR BUSES CONTROL POWER.

E.

PLACE 2EX1EP2EPX#, 2EP 480 PZR HTR BUS MN BKR CTR PWR in the EMERGENCY 2BDC9 position (78N EPA).

F.

Notify NCO to ENSURE Aux. Annunciator Point 0080, 2EP 480V PZR HTR BUS/LOSS OF 125VDC CONTR VOLT, is clear.

S2.OP-SO.125-0005(Q)

Salem 2 Page 18 of 54 Rev. 24 5.1.16 IF the 2GP Pressurizer Heater Bus is NOT C/T IAW Attachment 1, THEN:

NOTE Two operators will be required to minimize the time pressurizer heater bus breakers are without tripping capability.

A.

ENSURE 2GX2EP2GPX#, 2GP 480 PZR HTR BUS B/U SECT MN CTR PWR is in the EMERGENCY 2ADC9 position (78N EPA).

B.

ENSURE 2GX2EP2GPXA#, 2GP 480 PZR HTR BUS CONT SECT MN CTR PWR is in the EMERGENCY 2ADC9 position (78N EPA).

C.

NOTIFY the NCO that 2GP Pressurizer Heater Bus is to be transferred from 2ADC1AX to 2BDC1AX AND to expect 2GP 480V PZR HTR BUS/LOSS OF 125VDC CONTR VOLT alarm.

D.

OPEN 2ADC1AX9, 2EP (REG) & 2GP (EMER) PZR HTR BUSES CONTROL POWER.

E.

CLOSE 2BDC1AX9, 2GP (REG) & 2EP (EMER) PZR HTR BUSES CONTROL POWER.

F.

PLACE 2GX2EP2GPX#, 2GP 480 PZR HTR BUS B/U SECT MN CTR PWR in the NORMAL 2BDC9 position (78N EPA).

G.

PLACE 2GX2EP2GPXA#, 2GP 480 PZR HTR BUS CONT SECT MN CTR PWR in the NORMAL 2BDC9 position (78N EPA).

H.

Notify NCO to ENSURE Aux. Annunciator Point 0070, 2GP 480V PZR HTR BUS/LOSS OF 125VDC CONTR VOLT, is clear.

S2.OP-SO.125-0005(Q)

Salem 2 Page 19 of 54 Rev. 24 5.1.17 OPEN the following breakers (Elev. 84N Swgr Room):

2ADC1AX13, NO. 2H & 2E 4KV BUSES CONTROL POWER 2H (REG), 2E (EMER) 2ADC1AX24, 21 EMERGENCY LIGHTING INVERTER (ALTERNATE FEED) 2ADC1AX30, 2A 4KV VITAL BUS CONTROL POWER (REGULAR) 5.1.18 IF a 2A 125VDC Bus outage is planned AND all 2A 125VDC Bus loads have been transferred to 2B 125VDC Bus, THEN:

A.

OPEN the following breakers (Elev. 84N Swgr Room):

2ADC1AX3, 2A VITAL INSTRUMENT BUS INVERTER 2ADC1AX9, 2EP (REG) & 2GP (EMER) PZR HTR BUSES CONTROL POWER 2ADC1AX11, SPDS 2A 125VDC BATTERY VOLTAGE 2ADC1AX17, 2A 125VDC BUS CONTROL ROOM GROUND OHMMETER 2ADC1AX19, 2AADC 125VDC DISTR. CABINET (REGULAR) 2ADC1AX23, 2A 125VDC BUS GROUND OHMMETER (BATTERY CHARGER AREA) 2ADC1AX25, 2ADC 125VDC DISTR. CABINET (REGULAR) 2ADC1AX29, NO. 2E & 2G 460V BUSES CONTROL POWER 2E (REG), 2G (EMERG) 2ADC1AX35, 2A 460V VITAL BUS CONTROL POWER (REGULAR) 2ADC1AX18, 2A 125VDC BUS UNDERVOLTAGE RELAY &

CONTROL ROOM VOLTMETER B.

ENSURE OHA B-2, 2A 125VDC CNTRL BUS VOLT LO, is in alarm.

S2.OP-SO.125-0005(Q)

Salem 2 Page 20 of 54 Rev. 24 5.2 Disconnecting 2A 125VDC Battery from 2A 125VDC Bus 5.2.1 ENSURE Section 5.1, Transferring 2A 125VDC Bus Loads to 2B 125VDC Bus is completed.

5.2.2 COMPLETE S1.OP-SO.CAV-0001(Q), Control Area Ventilation Operation for Operation With Unit 2 EACS Out-Of-Service (Maintenance Mode)

(Refer to Step 3.7).

5.2.3 IF a 2A 125VDC Bus outage is planned, AND all 2A 125VDC Bus loads have been transferred to 2B 125VDC Bus, THEN:

A.

REMOVE 2A1 AND 2A2 125VDC Battery Charger from service IAW S2.OP-SO.125-0001(Q), 2A 125VDC Battery Charger Operation.

B.

IF 2A 125VDC Battery ammeter indicates >0 amps, THEN EVALUATE 2A 125VDC Battery loading prior to opening 2ADC1AX39, 2A 125VDC VITAL BATT DISC SWT.

C.

OPEN 2ADC1AX39, 2A 125VDC VITAL BATT DISC SWT (located inside, rear 2ADC1AX cabinet).

D.

PERFORM Independent Verification of components specified in, Sections 3.0 through 7.0.

5.2.4 IF a 2A 125VDC Bus outage is NOT planned, (planned 2A 125VDC Battery outage only)

THEN:

A.

ENSURE 2A1 OR 2A2 125VDC Battery Charger is in service IAW S2.OP-SO.125-0001(Q), 2A 125VDC Battery Charger Operation.

B.

IF 2A 125VDC Battery ammeter indicates >0 amps, THEN EVALUATE 2A 125VDC Battery loading prior to opening 2ADC1AX39, 2A 125VDC VITAL BATT DISC SWT.

C.

OPEN 2ADC1AX39, 2A 125VDC VITAL BATT DISC SWT (located inside, rear 2ADC1AX cabinet).

D.

PERFORM Independent Verification of components specified in, Sections 8.0 through 11.0.

5.2.5 UPDATE WCM to reflect component positions IAW Attachment 2.

S2.OP-SO.125-0005(Q)

Salem 2 Page 21 of 54 Rev. 24 5.3 Connecting 2A 125VDC Battery to 2A 125VDC Bus NOTE Maintenance may have connected a 2A 125VDC Battery Charger to the battery side of 2ADC1AX39, 2A 125VDC VITAL BATT DISC SWT to raise battery voltage to $117VDC.

5.3.1 ENSURE Maintenance has disconnected the 2A 125VDC Battery Charger from the battery side of 2ADC1AX39, 2A 125VDC VITAL BATT DISC SWT.

CAUTION When 2A 125VDC Bus loads are powered from 2A 125VDC Bus, connecting the bus to a partially discharged battery may cause bus voltage to drop to an unacceptable level.

The minimum acceptable battery terminal voltage for this condition is 117VDC.

Closing the disconnect switch with battery terminal voltage <117VDC with loads connected to the bus may result in spurious component actuations. For this reason, the disconnect switch is NOT to be closed until all 2A 125VDC Bus loads are transferred to 2B 125VDC Bus OR battery terminal voltage is raised to $117VDC.

5.3.2 IF 2A1 OR 2A2 125VDC Battery Charger is supplying power to the 2A 125VDC Bus loads, THEN ENSURE 2A 125VDC Battery Terminal Voltage is $117VDC.

(actual battery terminal voltage is provided by Maintenance) 5.3.3 CLOSE 2ADC1AX39, 2A 125VDC VITAL BATT DISC SWT (located inside, rear 2ADC1AX cabinet).

5.3.4 IF restoring 2A 125VDC Bus following a bus outage, THEN:

A.

ENSURE 2A 125V D-C Bus Blown Main Fuses Alarm Cabinet

[+] toggle switch and [-] toggle switch are ON.

B.

CLOSE 2ADC1AX18, 2A 125VDC BUS UNDERVOLTAGE RELAY &

CONTROL ROOM VOLTMETER (Elev. 84N Swgr Room).

C.

PLACE 2A1 OR 2A2 125VDC Battery Charger in service IAW S2.OP-SO.125-0001(Q), 2A 125VDC Battery Charger Operation.

(step continued on next page)

S2.OP-SO.125-0005(Q)

Salem 2 Page 22 of 54 Rev. 24 5.3.4 (Continued)

D.

ENSURE the following:

2A 125VDC Bus voltage is >129VDC.

OHA B-2, 2A 125VDC CNTRL BUS VOLT LO, is clear.

2A 125VDC Battery Blown Fuse lamps are extinguished (2A 125V D-C Bus Blown Main Fuses Alarm Cabinet).

5.3.5 ALIGN 2A1 AND 2A2 125VDC Battery Chargers as required to support current plant conditions IAW S2.OP-SO.125-0001(Q),

2A 125VDC Battery Charger Operation.

5.3.6 PERFORM Section 5.4, Returning 2A 125VDC Bus Loads to 2A 125VDC Bus.

5.3.7 IF 2A 125VDC Bus was removed from service, THEN PERFORM Independent Verification of components specified in, Sections 3.0 through 8.0.

5.3.8 IF 2A 125VDC Battery was disconnected from 2A 125VDC Bus AND 2A 125VDC Bus was NOT removed from service, THEN PERFORM Independent Verification of components specified in, Sections 8.0 through 12.0.

5.3.9 UPDATE WCM to reflect component positions IAW Attachment 4.

5.3.10 When 2A 125VDC Bus is OPERABLE, as determined by the SM/CRS, PERFORM the following:

INITIATE S1.OP-SO.CAV-0001(Q), Control Area Ventilation for Restoration From Operation With Unit 2 EACS Out-Of-Service (Maintenance Mode).

ALIGN Chilled Water System "Non-Essential Heat Loads" as required to support current operating conditions IAW S2.OP-SO.CH-0001(Q),

Chilled Water System Operation.

REFER to T/S Action Statements entered as a result of this procedure for continued applicability.

S2.OP-SO.125-0005(Q)

Salem 2 Page 23 of 54 Rev. 24 5.4 Returning 2A 125VDC Bus Loads to 2A 125VDC Bus 5.4.1 ENSURE 2ADC1AX39, 2A 125VDC VITAL BATT DISC SWT is CLOSED IAW Section 5.3, Connecting 2A 125VDC Battery to 2A 125VDC Bus.

5.4.2 CLOSE OR ENSURE CLOSED the following breakers (2ADC1AX 125VDC Bus, Elev. 84N Swgr Room):

2ADC1AX3, 2A VITAL INSTRUMENT BUS INVERTER 2ADC1AX13, NO. 2H & 2E 4KV BUSES CONTROL POWER 2H (REG), 2E (EMER) 2ADC1AX24, 21 EMERGENCY LIGHTING INVERTER (ALTERNATE FEED) 2ADC1AX30, 2A 4KV VITAL BUS CONTROL POWER (REGULAR) 5.4.3 IF all 2A 125VDC Bus loads are presently powered from 2B 125VDC Bus, THEN CLOSE the following breakers:

2ADC1AX9, 2EP (REG) & 2GP (EMER) PZR HTR BUSES CONTROL POWER 2ADC1AX11, SPDS 2A 125VDC BATTERY VOLTAGE 2ADC1AX17, 2A 125VDC BUS CONTROL ROOM GROUND OHMMETER 2ADC1AX19, 2AADC 125VDC DISTR. CABINET (REGULAR) 2ADC1AX23, 2A 125VDC BUS GROUND OHMMETER (BATTERY CHARGER AREA) 2ADC1AX25, 2ADC 125VDC DISTR. CABINET (REGULAR) 2ADC1AX29, NO. 2E & 2G 460V BUSES CONTROL POWER 2E (REG), 2G (EMERG) 2ADC1AX35, 2A 460V VITAL BUS CONTROL POWER (REGULAR)

S2.OP-SO.125-0005(Q)

Salem 2 Page 24 of 54 Rev. 24 NOTE Steps 5.4.4 through 5.4.15 may be performed in any order or concurrently at the SM/CRS discretion. Equipment identified in Steps 5.4.9 through 5.4.15 may NOT have been transferred IAW Section 5.1, Transferring 2A 125VDC Bus Loads to 2B 125VDC Bus.

5.4.4 TRANSFER 2A 4KV Vital Bus 125VDC control power, as follows (2A 4KV VITAL BUS 4KV PT's Cubicle rear):

A.

NOTIFY NCO that 2A 4KV Bus control power is to be transferred from 2B 125VDC Bus to 2A 125VDC Bus.

B.

OPEN 2AD1AXX2, 2A 4KV VITAL BUS EMER CONTROL POWER FROM 2BDC30.

C.

OPEN 2AD1AXX4, 2A 4KV VITAL BUS EMER ALARM POWER FROM D.

CLOSE 2AD1AXX1, 2A 4KV VITAL BUS REG CONTROL POWER FROM 2ADC30.

E.

CLOSE 2AD1AXX3, 2A 4KV VITAL BUS REG ALARM POWER FROM 2ADC30.

F.

Notify NCO to ENSURE the following:

Aux. Annunciator Point 0519, 2A 4KV VITAL BUS, LOSS OF 125VDC, alarmed and cleared.

Aux. Annunciator Point 0530, 2A 4KV VITAL BUS, LOSS OF NORM 125VDC, is clear.

Aux. Annunciator Point 0531, 2A 4KV VITAL BUS CIRCUIT ENERGIZED, is clear.

S2.OP-SO.125-0005(Q)

Salem 2 Page 25 of 54 Rev. 24 5.4.5 TRANSFER 2CW 460V Bus 125VDC control power, as follows:

CAUTION During transfer of 125VDC control power to the 2CW 460V Bus, 2CW breakers will NOT trip on fault conditions, and cannot be remotely operated.

Operators should be stationed at the 2CW 460V Bus and Elev. 84N Switchgear Rooms to facilitate the quick transfer of 2CW Bus control power.

A.

NOTIFY NCO that 2CW 460V Bus control power is to be transferred from 1B 125VDC Bus to 2A 125VDC Bus.

B.

OPEN 1BDC1AX15, 2CW 460V BUS EMERGENCY CONTROL POWER (1BDC1AX 125VDC Bus).

C.

CLOSE 2ADC1AX15, 2CW 460V BUS CONTROL POWER (REGULAR),

(2ADC1AX 125VDC Bus).

D.

OPEN 2CWX1CWX2, 2CW 460V BUS EMERGENCY CONTROL POWER FROM 1BDC15, (Unit #2 Circ. Water Intake Structure 480V Substation, 2CW-460-PTS-S cabinet).

E.

CLOSE 2CWX1CWX1, 2CW 460V BUS REGULAR CONTROL POWER FROM 2ADC15 (Unit #2 Circ. Water Intake Structure 480V Substation, 2CW-460-PTS-S cabinet).

F.

IF LOSS OF DC, UNDERVOLTAGE OR TX HIGH PRESSURE indicating light is illuminated, THEN:

1.

PRESS INDICATING LIGHT RESET LOSS OF DC, UNDERVOLTAGE OR TX HIGH PRESSURE pushbutton.

2.

ENSURE LOSS OF DC, UNDERVOLTAGE OR TX HIGH PRESSURE indicating light is extinguished.

G.

Notify NCO to ENSURE Aux. Annunciator Point 0810, 2CWI 460V BUS/LOSS OF VOLTAGE, alarmed and cleared.

S2.OP-SO.125-0005(Q)

Salem 2 Page 26 of 54 Rev. 24 5.4.6 TRANSFER 2H 4KV Group Bus 125VDC control power, as follows (2H 4KV Group Bus PT Cubicle):

A.

NOTIFY NCO that 2H 4KV Bus control power is to be transferred from 2B 125VDC Bus to 2A 125VDC Bus.

B.

OPEN 2HD1TBX2, 2H 4KV GROUP BUS EMER CONTROL POWER FROM 2BDC13.

C.

CLOSE 2HD1TBX1, 2H 4KV GROUP BUS REG CONTROL POWER FROM 2ADC13.

D.

Notify NCO to ENSURE Aux. Annunciator Point 0661, 2H 4KV GROUP BUS, LOSS OF 125VDC, alarmed and cleared.

5.4.7 TRANSFER 2E 4KV Group Bus 125VDC control power, as follows (2E 4KV Group Bus PT Cubicle):

A.

NOTIFY NCO that 2E 4KV Bus control power is to be transferred from 2B 125VDC Bus to 2A 125VDC Bus.

B.

OPEN 2ED1TBX1, 2E 4KV GROUP BUS REG CONTROL POWER FROM 2BDC13.

C.

CLOSE 2ED1TBX2, 2E 4KV GROUP BUS EMER CONTROL POWER FROM 2ADC13.

D.

Notify NCO to ENSURE Aux. Annunciator Point 0666, 2E 4KV GROUP BUS, LOSS OF 125VDC, alarmed and cleared.

NOTE Equipment identified in Steps 5.4.9 through 5.4.15 may NOT have been transferred IAW Section 5.1, Transferring 2A 125VDC Bus Loads to 2B 125VDC Bus.

5.4.8 IF all 2A 125VDC Bus loads are currently aligned to 2A 125VDC Bus, THEN MARK Steps 5.4.9 through 5.4.15 as N/A.

5.4.9 TRANSFER 2A 460V Vital Bus 125VDC control power, as follows (2A 460V Vital Bus):

A.

NOTIFY NCO that 2A 460V Vital Bus control power is to be transferred from 2B 125VDC Bus to 2A 125VDC Bus.

B.

OPEN 2AX1AXX2, 2A 460V VITAL BUS EMER CONTROL POWER FROM 2BDC35.

C.

CLOSE 2AX1AXX1, 2A 460V VITAL BUS REG CONTROL POWER FROM 2ADC35.

D.

Notify NCO to ENSURE Aux. Annunciator Point 0785, 2A 460V VITAL BUS, LOSS OF VOLTAGE, alarmed and cleared.

S2.OP-SO.125-0005(Q)

Salem 2 Page 27 of 54 Rev. 24 5.4.10 TRANSFER 2E 460V Bus 125VDC control power, as follows (2E 460V Bus):

A.

NOTIFY NCO that 2E 460V Bus control power is to be transferred from 2B 125VDC Bus to 2A 125VDC Bus.

B.

OPEN 2EX1AXX2, 2E 460 VOLT BUS EMERGENCY CONTROL POWER FROM 2BDC29.

C.

CLOSE 2EX1AXX1, 2E 460 VOLT BUS REGULAR CONTROL POWER FROM 2ADC29.

D.

Notify NCO to ENSURE Aux. Annunciator Point 0081, 2E 460V BUS, LOSS OF 125VDC CONTROL VOLT, alarmed and cleared.

5.4.11 TRANSFER 2G 460V Bus 125VDC control power, as follows (2G 460V Bus):

A.

NOTIFY NCO that 2G 460V Bus control power is to be transferred from 2B 125VDC Bus to 2A 125VDC Bus.

B.

OPEN 2GX1AXX1, 2G 460 VOLT BUS REGULAR CONTROL POWER FROM 2BDC29.

C.

CLOSE 2GX1AXX2, 2G 460 VOLT BUS EMERGENCY CONTROL POWER FROM 2ADC29.

D.

Notify NCO to ENSURE Aux. Annunciator Point 0084, 2G 460V BUS, LOSS OF 125VDC CONTROL VOLT, alarmed and cleared.

5.4.12 TRANSFER power to 2ADC (2ADC3AX) 125VDC Distribution Cabinet, as follows (Elev. 84N Swgr Room):

A.

NOTIFY NCO that power to 2ADC3AX 125VDC Distribution Cabinet is to be transferred from 2B 125VDC Bus to 2A 125VDC Bus.

B.

OPEN 2ADC3AXX2, 2ADC DISTRIBUTION CABINET EMERGENCY POWER FROM 2BDC25.

C.

CLOSE 2ADC3AXX1, 2ADC DISTRIBUTION CABINET REGULAR POWER FROM 2ADC25.

D.

Notify NCO to ENSURE Aux. Annunciator Point 0036, 2ADC 125VDC DISTR. CABINET, LOSS OF VOLT., alarmed and cleared.

S2.OP-SO.125-0005(Q)

Salem 2 Page 28 of 54 Rev. 24 5.4.13 TRANSFER power to 2ADC2AX, 2AADC 125VDC Distribution Cabinet, as follows (100N Relay Room):

A.

IF 21 CCHX is in service, THEN ENSURE 21SW122, 21 CCHX SW INLET VLV, valve actuator is manually engaged IAW Attachment 3, Section 1.0.

B.

IF 22 CCHX is in service, THEN ENSURE 22SW122, 22 CCHX SW INLET VLV, valve actuator is manually engaged IAW Attachment 3, Section 1.0.

C.

NOTIFY NCO that power to 2ADC2AX 125VDC Distribution Cabinet is to be transferred from 2B 125VDC Bus to 2A 125VDC Bus.

NOTE The following valves will close when 2ADC2AX, 2AADC 125VDC Distribution Cabinet, is de-energized during power supply transfers:

Containment Radiation Monitor sample valves 2VC8 and 2VC12 Letdown Heat Exchanger CC control valve 2CC71 Pressurizer Power Operated Relief valve 2PR1 21 CCHX SW inlet valve 21SW122 (Sealed in closed signal, when in AUTO)

D.

Notify NCO to PERFORM the following:

1.

OPEN Containment APD Sample Backup Isolation Valves.

___ 2VC13, RMS SAMPLE SUCT VLV

___ 2VC14, RMS SAMPLE SUCTION VLV

___ 2VC9, RMS SAMPLE DISCHARGE VLV

___ 2VC10, RMS SAMPLE DISCHARGE VLV (step continued on next page)

S2.OP-SO.125-0005(Q)

Salem 2 Page 29 of 54 Rev. 24 5.4.13 (Continued) 2.

CLOSE Containment APD Sample Regular Isolation Valves:

___ 2VC11, RMS SAMPLE INLET VLV

___ 2VC12, RMS SAMPLE INLET VLV

___ 2VC7, RMS SAMPLE OUTLET VLV

___ 2VC8, RMS SAMPLE OUTLET VLV 3.

SECURE Letdown IAW S2.OP-SO.CVC-0001(Q),

Charging, Letdown, and Seal Injection.

E.

OPEN 2ADC2AXX2, 2AADC 125VDC DISTRIBUTION CABINET EMERGENCY POWER FROM 2BDC19.

F.

CLOSE 2ADC2AXX1, 2AADC 125VDC DISTRIBUTION CABINET REGULAR POWER FROM 2ADC19.

G.

Notify NCO to PERFORM the following:

1.

ENSURE Aux. Annunciator Point 0026, 2AADC 125VDC DISTRIBUTION CABINET, LOSS OF VOLT.,

alarmed and cleared.

2.

OPEN Containment APD Sample Regular Isolation Valves:

___ 2VC11

___ 2VC12

___ 2VC7

___ 2VC8 3.

CLOSE Containment APD Sample Backup Isolation Valves:

___ 2VC13

___ 2VC14

___ 2VC9

___ 2VC10 (step continued on next page)

S2.OP-SO.125-0005(Q)

Salem 2 Page 30 of 54 Rev. 24 5.4.13 (Continued) 4.

ESTABLISH Letdown IAW S2.OP-SO.CVC-0001(Q),

Charging, Letdown, and Seal Injection.

5.

EVALUATE T/S 3.4.10.3 for restoration of POPS CH I solenoid valve.

(Refer to Step 3.2.1)

H.

RESET 21SW122, 21 CCHX SW INLET VLV, by momentarily placing the 43-1 switch to AUTO (21 CCHX Room).

I.

IF 21 CCHX is in service, THEN:

1.

NOTIFY NCO that 21SW122, 21 CCHX INLET VLV, is to be restored to AUTO control.

2.

DISENGAGE (MANUAL) 21SW122 IAW Attachment 3, Section 2.0.

3.

PERFORM Independent Verification IAW Attachment 4, Section 1.0.

J.

IF 22 CCHX is in service, THEN:

1.

NOTIFY NCO that 22SW122, 22 CCHX INLET VLV, is to be restored to AUTO control.

2.

DISENGAGE (MANUAL) 22SW122 IAW Attachment 3, Section 2.0.

3.

PERFORM Independent Verification IAW Attachment 4, Section 2.0.

K.

DISCONTINUE Operator Action Log IAW SH.OP-DL.ZZ-0027(Q) for manual control of the in service CCHX.

S2.OP-SO.125-0005(Q)

Salem 2 Page 31 of 54 Rev. 24 5.4.14 IF the 2EP Pressurizer Heater Bus 125 VDC Control Power is aligned to the backup power supply, THEN:

NOTE Two operators will be required to minimize the time pressurizer heater bus breakers are without tripping capability.

A.

ENSURE 2EX1EP2EPX#, 2EP 480 PZR HTR BUS MN BKR CTR PWR is in the EMERGENCY 2BDC9 position (78N EPA).

B.

NOTIFY the NCO that 2EP Pressurizer Heater Bus is to be transferred from 2BDC1AX to 2ADC1AX and to expect 2EP 480V PZR HTR BUS/

LOSS OF 125VDC CONTR VOLT alarm.

C.

OPEN 2BDC1AX9, 2GP (REG) & 2EP (EMERG) PZR HTR BUSES CONTROL POWER.

D.

CLOSE 2ADC1AX9, 2EP (REG) & 2GP (EMER) PZR HTR BUSES CONTROL POWER.

E.

PLACE 2EX1EP2EPX#, 2EP 480 PZR HTR BUS MN BKR CTR PWR in the NORMAL 2ADC9 position (78N EPA).

F.

Notify NCO to ENSURE Aux. Annunciator Point 0080, 2EP 480V PZR HTR BUS/LOSS OF 125VDC CONTR VOLT clear.

S2.OP-SO.125-0005(Q)

Salem 2 Page 32 of 54 Rev. 24 5.4.15 IF the 2GP Pressurizer Heater Bus 125 VDC Control Power is aligned to the regular power supply, THEN:

NOTE Two operators will be required to minimize the time pressurizer heater bus breakers are without tripping capability.

A.

ENSURE 2GX2EP2GPX#, 2GP 480 PZR HTR BUS B/U SECT MN CTR PWR is in the NORMAL 2BDC9 position (78N EPA).

B.

ENSURE 2GX2EP2GPXA#, 2GP 480 PZR HTR BUS CONT SECT MN CTR PWR is in the NORMAL 2BDC9 position (78N EPA).

C.

NOTIFY the NCO that 2GP Pressurizer Heater Bus is to be transferred from 2BDC1AX to 2ADC1AX AND to expect 2GP 480V PZR HTR BUS/

LOSS OF 125VDC CONTR VOLT alarm.

D.

OPEN 2BDC1AX9, 2GP (REG) & 2EP (EMERG) PZR HTR BUSES CONTROL POWER.

E.

CLOSE 2ADC1AX9, 2EP (REG) & 2GP (EMER) PZR HTR BUSES CONTROL POWER.

F.

PLACE 2GX2EP2GPX#, 2GP 480 PZR HTR BUS B/U SECT MN CTR PWR in the EMERGENCY 2ADC9 position (78N EPA).

G.

PLACE 2GX2EP2GPXA#, 2GP 480 PZR HTR BUS CONT SECT MN CTR PWR in the EMERGENCY 2ADC9 position (78N EPA).

H.

Notify NCO to ENSURE Aux. Annunciator Point 0070, 2GP 480V PZR HTR BUS/LOSS OF 125VDC CONTR VOLT clear.

5.4.16 OPEN OR ENSURE OPEN the following breakers (Elev. 84N Swgr Room):

2BDC1AX13, NO. 2E & 2H 4KV BUSES CONTROL POWER 2E (REG), 2H (EMER) 2BDC1AX30, 2A 4KV VITAL BUS EMERGENCY CONTROL POWER 2BDC1AX19, 2AADC 125VDC DISTRIBUTION CABINET EMERGENCY POWER 2BDC1AX25, 2ADC 125VDC DISTRIBUTION CABINET EMERGENCY POWER 2BDC1AX29, NO. 2G & 2E 460V BUSES CONTROL POWER 2G (REG), 2E (EMER) 2BDC1AX35, 2A 460V VITAL BUS EMERGENCY CONTROL POWER

S2.OP-SO.125-0005(Q)

Salem 2 Page 33 of 54 Rev. 24 5.4.17 IF 2A 230V Vital Bus is energized, THEN:

NOTE Steps 5.4.17A and 5.4.17B may be performed in any order.

A.

PERFORM the following IAW S2.OP-SO.115-0011(Q),

2A Vital Instrument Bus UPS System Operation:

1.

IF 2A 115V Vital Instrument Bus is de-energized, THEN PLACE 2A Vital Instrument Bus UPS System in service AND ENERGIZE 2A 115V Vital Instrument Bus.

2.

IF 2A 115V Vital Instrument Bus is energized from the AC Line Regulator, THEN:

___ a. ENERGIZE 2A Vital Instrument Bus Rectifier and Inverter with AC Line Regulator Supplying 2A 115V Vital Instrument Bus.

___ b. TRANSFER 2A Vital Instrument Bus from AC Line Regulator to Inverter.

3.

IF 2A 115V Vital Instrument Bus is energized from the Inverter with DC Power Supply de-energized, THEN ENERGIZE DC Power Supply to Inverter.

4.

IF 2A 115V Vital Instrument Bus is powered from a temporary power supply, THEN:

___ a. REMOVE all loads from 2A 115V Vital Instrument Bus.

___ b. Direct Maintenance to DE-ENERGIZE the temporary power supply AND REMOVE temporary power leads.

___ c. PLACE 2A Vital Instrument Bus UPS System in service, AND ENERGIZE 2A 115V Vital Instrument Bus.

(step continued on next page)

S2.OP-SO.125-0005(Q)

Salem 2 Page 34 of 54 Rev. 24 5.4.17 (Continued)

B.

PERFORM the following IAW S2.OP-SO.115-0005(Q),

21 Emergency Lighting UPS System Operation:

1.

IF 2AZ1AX, 21 Emergency Lighting Distribution Cabinet, is powered from the preferred AC source, THEN ENERGIZE 21 Emergency Lighting Inverter with Preferred AC Source Supplying 21 Emergency Lighting Distribution Cabinet.

2.

IF 2AZ1AX, 21 Emergency Lighting Distribution Cabinet, is de-energized, THEN PLACE 21 Emergency Lighting UPS System in service, AND ENERGIZE 21 Emergency Lighting Distribution Cabinet.

5.4.18 IF components specified in Attachment 1, Load Shed are tagged to support transferring 2A 125VDC Bus loads, THEN RELEASE the tags.

5.4.19 RELEASE tag from 2BDC1AX24, 22 EMERGENCY LIGHTING INVERTER AND RESTORE 22 Emergency Lighting UPS System to normal operation IAW S2.OP-SO.115-0006(Q), 22 Emergency Lighting UPS System Operation.

5.4.20 COMPLETE Section 5.3, Connecting 2A 125VDC Battery to 2A 125VDC Bus.

S2.OP-SO.125-0005(Q)

Salem 2 Page 35 of 54 Rev. 24 5.5 Completion and Review 5.5.1 COMPLETE Attachment 5, Section 1.0 and 2.0, AND FORWARD this procedure to the SM/CRS for review and approval.

5.5.2 SM/CRS PERFORM the following:

A.

REVIEW this procedure with Attachments 1-5 for completeness and accuracy.

B.

COMPLETE Attachment 5, Section 3.0.

C.

FORWARD completed procedure to Operations Staff.

END OF PROCEDURE SECTION

S2.OP-SO.125-0005(Q)

Salem 2 Page 36 of 54 Rev. 24 6.0 RECORDS 6.1 Retain the following IAW RM-AA-101, Records Management Program:

Attachments 1-5

7.0 REFERENCES

7.1 Updated Final Safety Analysis Report:

7.1.1 Section 8.3.2, DC Power 7.2 Technical Specifications - Unit 2:

None

7.3 Procedures

7.3.1 S2.MD-FR.ZZ-0001(Q), Alternate Power Sources During Refueling Outages 7.3.2 S2.OP-SO.125-0006(Q), 2B 125VDC Bus Operation

7.4 Drawings

7.4.1 203007, No. 1 Unit 125 V.D.C. One Line 7.4.2 211370, 115V. Control System 7.4.3 223720, No. 2 Unit 125 V.D.C. One Line

7.5 Others

7.5.1 DCP 2EC-3332, Emergency Lighting Inverter Logic Card Replacement 7.5.2 DCP 2EC-3337, P250 Plant Computer Replacement 7.5.3 DCP 2EC-3567, Molded Case Circuit Breaker Replacement (125 VDC Battery Disconnect Switch) 7.5.4 DCP 2EC-3585, CCW Letdown Temperature Control Valve Mod 7.5.5 DCP 2EC-3590, Generic Letter 96-06 Mods 7.5.6 DE-CB.125-0018(Q), Low Voltage DC Electrical Systems 7.5.7 S-2-125-EEE-1102, 2A 125V DC Bus to 2B 125V DC Bus Transfer 7.5.8 NSO INCI 94-072, 2A 125VDC Bus UV Relay Not Installed 7.5.9 SER Section 8.3.2, D-C System 7.5.10 SER Supplement 3, Section 8.3.2, Direct Current Power Systems 7.5.11 SER Supplement 4, Section 8.3.2, Direct Current Power Systems 7.5.12 DCP 80057549, Integrated Head Assembly

S2.OP-SO.125-0005(Q)

Salem 2 Page 37 of 54 Rev. 24 7.6 Cross-

References:

7.6.1 Technical Specifications:

A.

3.4.10.3, Overpressure Protection Systems B.

3.7.6, Control Room Emergency Air Conditioning System C.

3.7.10, Chilled Water System D.

3.8.2.4, 125 Volt DC Distribution - Shutdown E.

3.8.2.2, A.C. Distribution - Shutdown 7.6.2 Procedures A.

RM-AA-101, Records Management Program B.

S2.OP-SO.115-0005(Q), 21 Emergency Lighting UPS System Operation C.

S2.OP-SO.115-0006(Q), 22 Emergency Lighting UPS System Operation D.

S2.OP-SO.115-0011(Q), 2A Vital Instrument Bus UPS System Operation E.

S2.OP-SO.125-0001(Q), 2A 125VDC Battery Charger Operation F.

S2.OP-SO.125-0004(Q), 125VDC Ground Detection G.

S2.OP-SO.CVC-0001(Q), Charging, Letdown, and Seal Injection

7.7 Commitments

None

S2.OP-SO.125-0005(Q)

Salem 2 Page 38 of 54 Rev. 24 ATTACHMENT 1 (Page 1 of 4) 125VDC LOAD SHED NOTES At the occurrence of a Loss Of Off-site Power (LOOP) the station batteries are the only 125VDC power available and must carry the combined loads for one minute until the Emergency Diesel Generators start and load. The intent of this attachment is to minimize the 125VDC electrical loading during a transient which trips the listed AC loads and causes the associated charging spring motors to recharge simultaneously.

Each 4KV breaker selected for load shed is to be C/T in the DISCONNECT (OPEN) position. This will prevent the use of the 125VDC Racking Power when the breaker is selected for load shed. The Control Power Breaker may be substituted for selected 460V Breakers.

The combined load, spring charging motor/trip coil, associated with each 4KV breaker is.6.0 amps AND each 460V breaker is.10.0 amps.

___ 1.0 C/T at least 334 amps of 125VDC controlled loads specified in Steps 1.1, 1.2, and 1.3 to support transferring 2A 125VDC Bus loads to 2B 125VDC Bus.

S2.OP-SO.125-0005(Q)

Salem 2 Page 39 of 54 Rev. 24 ATTACHMENT 1 (Page 2 of 4)

TRANSFERRING 2A 125VDC BUS LOADS TO 2B 125VDC BUS 1.1 2A-DF-ECP-1, 2A DIESEL GENERATOR LOCKOUT [40 amps].

1.2 4KV BUS LOADS - [each breaker listed is 6.0 amps. 132 amps total]:

2AD1AX1D, 21 AUXILIARY FEEDWATER PUMP 2AD1AX2D, 21 CONTAINMENT SPRAY PUMP 2AD1AX3D, 21 SERVICE WATER PUMP 2AD1AX5D, 21 SAFETY INJECTION PUMP 2AD1AX6D, 2A DIESEL GENERATOR BREAKER 2AD1AX7D, 21 RESIDUAL HEAT REMOVAL PUMP 2AD1AX8D, 22 SERVICE WATER PUMP 2AD1AX10D, 21 COMPONENT COOLING WATER PUMP 2BD1AX1D, 22 AUXILIARY FEEDWATER PUMP 2BD1AX3D, 23 SERVICE WATER PUMP 2BD1AX6D, 2B DIESEL GENERATOR BREAKER 2BD1AX7D, 22 RESIDUAL HEAT REMOVAL PUMP 2BD1AX8D, 24 SERVICE WATER PUMP 2BD1AX9D, 21 CHARGING PUMP 2BD1AX10D, 22 COMPONENT COOLING WATER PUMP 2ED1TB1D, 22 CONDENSATE PUMP 2ED1TB4D, 22 REACTOR COOLANT PUMP 2FD1TB1D, 23 CONDENSATE PUMP 2FD1TB4D, 23 REACTOR COOLANT PUMP 2GD1TB4D, 24 REACTOR COOLANT PUMP 2HD1TB1D, 21 CONDENSATE PUMP 2HD1TB4D, 21 REACTOR COOLANT PUMP

S2.OP-SO.125-0005(Q)

Salem 2 Page 40 of 54 Rev. 24 ATTACHMENT 1 (Page 3 of 4)

TRANSFERRING 2A 125VDC BUS LOADS TO 2B 125VDC BUS 1.3 460V BUS LOADS - [each breaker listed is 10.0 amps. 400 amps total]:

2AX1AX2X, 21 CONTAINMENT FAN COIL UNIT LOW SPEED 2AX1AX3X, 21 CONTAINMENT FAN COIL UNIT HIGH SPEED 2AX1AX4X, 21 CONTAINMENT FAN COIL UNIT HIGH SPEED 2AX1AX5X, 21 FUEL HANDLING BUILDING EXHAUST FAN 2AX1AX6X, 2 RADIATION MONITORING SYSTEM 2AX1AX7X, 23 CHARGING PUMP 2AX1AX9X, 21 SWGR RETURN/EXHAUST FAN 2AX1AX10X, 21 PRIMARY WATER MAKE-UP PUMP 2AX1AX12X, 21 AUX BUILDING VENTILATION EXHAUST FAN 2AX1AX13X, 21 CHILLER 2AX1AX14X, 2EP PRESSURIZER HEATER BUS FEED (EMERG) 2AX1AX15X, 21 HYDROGEN RECOMBINER 2AX1AX16X, 21 SWITCHGEAR ROOM SUPPLY 2BX1AX2X, 22 CONTAINMENT FAN COIL UNIT LOW SPEED 2BX1AX3X, 22 CONTAINMENT FAN COIL UNIT HIGH SPEED 2BX1AX4X, 22 CONTAINMENT FAN COIL UNIT HIGH SPEED 2BX1AX5X, 22 FUEL HANDLING BUILDING EXHAUST FAN 2BX1AX6X, 24 CONTAINMENT FAN COIL UNIT LOW SPEED 2BX1AX7X, 24 CONTAINMENT FAN COIL UNIT HIGH SPEED (step continued on next page)

S2.OP-SO.125-0005(Q)

Salem 2 Page 41 of 54 Rev. 24 ATTACHMENT 1 (Page 4 of 4)

TRANSFERRING 2A 125VDC BUS LOADS TO 2B 125VDC BUS 1.3 (Continued) 2BX1AX8X, 24 CONTAINMENT FAN COIL UNIT HIGH SPEED 2BX1AX9X, 22 SWGR RETURN/EXHAUST FAN 2BX1AX10X, 22 SWITCHGEAR ROOM SUPPLY FAN 2BX1AX11X, 22 AUX BUILDING VENTILATION SUPPLY FAN 2BX1AX12X, 22 AUX BUILDING VENTILATION EXHAUST FAN 2BX1AX13X, 22 CHILLER 2BX1AX14X, 22 SPENT FUEL PIT PUMP 2BX1AX15X, 22 HYDROGEN RECOMBINER 2EX1AX5X, 21 CONTROL ROD DRIVE VENT FAN 2EX1AX6X, 21 WASTE GAS COMPRESSOR 2EX1AX9X, 21 MONITOR TANK PUMP 2EX1AX14X, 22 CONTROL ROD DRIVE VENT FAN 2FX1TB14X, 2 RAW WATER PUMP 2GX1AX5X, 23 CONTROL ROD DRIVE VENT FAN 2GX1AX6X, 22 WASTE GAS COMPRESSOR 2GX1AX9X, 22 MONITOR TANK PUMP 2HX1TB11X, 2 DEAERATOR VACUUM PUMP 2HX1TB17X, 6 PRODUCTION WELL PUMP 2EX1EP2EPX, 2EP 480V PZR HTR BUS MN BKR.

2GX2EP2GPX, 2GP 480V PZR HTR BUS B/U SECT MN BKR 2GX1EP2GPXA, 2GP 480V PZR HTR BUS CTL SECT MN BKR

S2.OP-SO.125-0005(Q)

Salem 2 Page 42 of 54 Rev. 24 ATTACHMENT 2 (Page 1 of 5)

INDEPENDENT VERIFICATION ALTERNATE POWER SUPPLY ALIGNMENT 1.0 21 CCHX SW INLET VLV: (Elev. 84N Aux Bldg)

VALVE NAME POSITION IV 21SW122 CCHX SW INLET VLV Manually Jacked 21SW122 43-1 Switch AUTO 2.0 22 CCHX SW INLET VLVS: (Elev. 84N Aux Bldg)

VALVE NAME POSITION IV 22SW122 CCHX SW INLET VLV Manually Jacked 22SW122 43-2 Switch AUTO 3.0 2ADC1AX 125VDC Bus: (Elev. 84N Swgr Room)

BREAKER NAME POS IV 2ADC1AX3 2A VITAL INSTRUMENT BUS INVERTER OFF 2ADC1AX9 2EP (REG) & 2GP (EMER) PZR HTR BUSES CONTROL POWER OFF 2ADC1AX11 SPDS 2A 125 VDC BATTERY VOLTAGE OFF 2ADC1AX13 NO. 2H & 2E 4KV BUSES CONTROL POWER 2H (REG), 2E (EMER)

OFF 2ADC1AX15 2CW 460V BUS CONTROL POWER (REGULAR)

OFF 2ADC1AX17 2A 125VDC BUS CONTROL ROOM GROUND OHMMETER OFF 2ADC1AX18 2A 125VDC BUS UNDERVOLTAGE RELAY &

CONTROL ROOM VOLTMETER OFF 2ADC1AX19 2AADC 125VDC DISTRIBUTION CABINET (REGULAR)

OFF 2ADC1AX23 2A 125VDC BUS GROUND OHMMETER (BATTERY CHARGER AREA)

OFF 2ADC1AX24 21 EMERGENCY LIGHTING INVERTER (ALTERNATE FEED)

OFF 2ADC1AX25 2ADC 125VDC DISTRIBUTION CABINET (REGULAR)

OFF 2ADC1AX29 NO. 2E & 2G 460V BUSES CONTROL POWER 2E (REG), 2G (EMERG)

OFF 2ADC1AX30 2A 4KV VITAL BUS REGULAR CONTROL POWER OFF 2ADC1AX35 2A 460V VITAL BUS REGULAR CONTROL POWER OFF 2ADC1AX39 2A 125VDC VITAL BATT DISC SWT (located inside, rear 2ADC1AX cabinet)

OFF

S2.OP-SO.125-0005(Q)

Salem 2 Page 43 of 54 Rev. 24 ATTACHMENT 2 (Page 2 of 5)

INDEPENDENT VERIFICATION ALTERNATE POWER SUPPLY ALIGNMENT 4.0 2BDC1AX 125VDC Bus: (Elev. 84N Swgr Room)

BREAKER NAME POS IV 2BDC1AX9 2GP (REG) & 2EP (EMER) PZR HTR BUSES CONTROL POWER ON 2BDC1AX13 NO. 2E & 2H 4KV BUSES CONTROL POWER 2E (REG), 2H (EMER)

ON 2BDC1AX19 2AADC 125VDC DISTRIBUTION CABINET EMERGENCY POWER ON 2BDC1AX25 2ADC 125VDC DISTRIBUTION CABINET EMERGENCY POWER ON 2BDC1AX29 NO. 2G & 2E 460V BUSES CONTROL POWER 2G (REG), 2E (EMER)

ON 2BDC1AX30 2A 4KV VITAL BUS EMERGENCY CONTROL POWER ON 2BDC1AX35 2A 460V VITAL BUS EMERGENCY CONTROL POWER ON 5.0 1BDC1AX 125VDC Bus: (Unit 1, Elev. 84N Swgr Room)

BREAKER NAME POS IV 1BDC1AX15 2CW 460V BUS EMERGENCY CONTROL POWER ON 6.0 DC DISTRIBUTION CABINETS MAIN BREAKER ALIGNMENT:

BREAKER NAME POS IV 2ADC3AXX1 2ADC DISTRIBUTION CABINET REGULAR POWER FROM 2ADC25 OFF 2ADC3AXX2 2ADC DISTRIBUTION CABINET EMERGENCY POWER FROM 2BDC25 ON 2ADC2AXX1 2AADC 125VDC DISTRIBUTION CABINET REGULAR POWER FROM 2ADC19 OFF 2ADC2AXX2 2AADC 125VDC DISTRIBUTION CABINET EMERGENCY POWER FROM 2BDC19 ON

S2.OP-SO.125-0005(Q)

Salem 2 Page 44 of 54 Rev. 24 ATTACHMENT 2 (Page 3 of 5)

INDEPENDENT VERIFICATION ALTERNATE POWER SUPPLY ALIGNMENT 7.0 AC BUSES CONTROL POWER BREAKER ALIGNMENT:

BREAKER NAME POS IV 2AX1AXX1 2A 460V VITAL BUS REG CONTROL POWER FROM 2ADC35 OFF 2AX1AXX2 2A 460V VITAL BUS EMER CONTROL POWER FROM 2BDC35 ON 2EX1AXX1 2E 460 VOLT BUS REGULAR CONTROL POWER FROM 2ADC29 OFF 2EX1AXX2 2E 460 VOLT BUS EMERGENCY CONTROL POWER FROM 2BDC29 ON 2GX1AXX1 2G 460 VOLT BUS REGULAR CONTROL POWER FROM 2BDC29 ON 2GX1AXX2 2G 460 VOLT BUS EMERGENCY CONTROL POWER FROM 2ADC29 OFF 2AD1AXX1 2A 4KV VITAL BUS REG CONTROL POWER FROM 2ADC30 (2A 4KV VITAL BUS 4KV PT's Cubicle rear)

OFF 2AD1AXX2 2A 4KV VITAL BUS EMER CONTROL POWER FROM 2BDC30 (2A 4KV VITAL BUS 4KV PT's Cubicle rear)

ON 2AD1AXX3 2A 4KV VITAL BUS REG ALARM POWER FROM 2ADC30 (2A 4KV VITAL BUS 4KV PT's Cubicle rear)

OFF 2AD1AXX4 2A 4KV VITAL BUS EMER ALARM POWER FROM 2BDC30 (2A 4KV VITAL BUS 4KV PT's Cubicle rear)

ON 2HD1TBX1 2H 4KV GROUP BUS REG CONTROL POWER FROM 2ADC13 (2H 4KV Group Bus PT Cubicle)

OFF 2HD1TBX2 2H 4KV GROUP BUS EMER CONTROL POWER FROM 2BDC13 (2H 4KV Group Bus PT Cubicle)

ON 2ED1TBX1 2E 4KV GROUP BUS REG CONTROL POWER FROM 2BDC13 (2E 4KV Group Bus PT Cubicle)

ON 2ED1TBX2 2E 4KV GROUP BUS EMER CONTROL POWER FROM 2ADC13 (2E 4KV Group Bus PT Cubicle)

OFF 2CWX1CWX1 2CW 460V BUS REGULAR CONTROL POWER FROM 2ADC15 (CWI Structure, 480V Substation, 2CW-460-PTS-S cabinet)

OFF 2CWX1CWX2 2CW 460V BUS EMERGENCY CONTROL POWER FROM 1BDC15 (CWI Structure, 480V Substation, 2CW-460-PTS-S cabinet)

ON (Continued on next page)

S2.OP-SO.125-0005(Q)

Salem 2 Page 45 of 54 Rev. 24 ATTACHMENT 2 (Page 4 of 5)

INDEPENDENT VERIFICATION ALTERNATE POWER SUPPLY ALIGNMENT 7.0 AC BUSES CONTROL POWER BREAKER ALIGNMENT (78N EPA) (continued):

SWITCH NAME POS IV 2EX1EP2EPX#

2EP 480 PZR HTR BUS MN BKR CTR PWR EMERGENCY 2BDC9 2GX2EP2GPX#

2GP 480 PZR HTR BUS B/U SECT MN CTR PWR NORMAL 2BDC9 2GX2EP2GPXA#

2GP 480 PZR HTR BUS CONT SECT MN CTR PWR NORMAL 2BDC9 8.0 2ADC1AX 125VDC Bus: (Elev. 84N Swgr Room)

BREAKER NAME POS IV 2ADC1AX13 NO. 2H & 2E 4KV BUSES CONTROL POWER 2H (REG), 2E (EMER)

OFF 2ADC1AX15 2CW 460V BUS CONTROL POWER (REGULAR)

OFF 2ADC1AX24 21 EMERGENCY LIGHTING INVERTER (ALTERNATE FEED)

OFF 2ADC1AX30 2A 4KV VITAL BUS REGULAR CONTROL POWER OFF 2ADC1AX39 2A 125VDC VITAL BATT DISC SWT (located inside, rear 2ADC1AX cabinet)

OFF 9.0 2BDC1AX 125VDC Bus: (Elev. 84N Swgr Room)

BREAKER NAME POS IV 2BDC1AX13 NO. 2E & 2H 4KV BUSES CONTROL POWER 2E (REG), 2H (EMER)

ON 2BDC1AX30 2A 4KV VITAL BUS EMERGENCY CONTROL POWER ON 10.0 1BDC1AX 125VDC Bus: (Unit 1, Elev. 84N Swgr Room)

BREAKER NAME POS IV 1BDC1AX15 2CW 460V BUS EMERGENCY CONTROL POWER ON

S2.OP-SO.125-0005(Q)

Salem 2 Page 46 of 54 Rev. 24 ATTACHMENT 2 (Page 5 of 5)

INDEPENDENT VERIFICATION ALTERNATE POWER SUPPLY ALIGNMENT 11.0 AC BUSES CONTROL POWER BREAKER ALIGNMENT:

BREAKER NAME POS IV 2AD1AXX1 2A 4KV VITAL BUS REG CONTROL POWER FROM 2ADC30 (2A 4KV VITAL BUS 4KV PT's Cubicle rear)