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Hatch ILT-14 Study Guide > EOP Procedure Actions > Flashcards

EOP Procedure Actions Flashcards

1
Q

31EO-EOP-100-1/2

RCIC Overrides and purpose

A
  • Low pressure isolation (continued operation at low pressures)
  • High Area Temp Isolation (allows RCIC ops during blackout
  • High Torus Level Swap (maintain suction source on CST)
  • RCIC High Turbine Exhaust Trip
  • RCIC High RWL (RPV flooding and batch mode of operation)
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2
Q

31EO-EOP-100-1/2

HPCI Overrides and purpose

A
  • High Area Temp Isolation
    (Allows HPCI ops during blackout)
  • High Torus Level Swap (maintain suction source on CST)
  • High RPV level trip (RPV flooding and batch mode of operation)
  • 2E41-F011 High DW Pressure Closure bypass (RCIC pressure control with Hi DW pressure LOCA only)
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3
Q

31EO-EOP-100-1/2

DW Cooler Overrides and purpose

A

Note: Cannot restart coolers if >250°F on Unit 2 only. Chill water flow to the fans was isolated during the LOCA and pipe ruptures can occur on re-establishing flow.

  • Restart of the fans with LOCA signal present (keylock switches on P654/657)

Override per this procedure and the operate the coolers IAW SO procedure

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4
Q

31EO-EOP-100-2

DW Chiller Overrides and purpose

A

Caution - Do NOT Start a DW Chiller if any DW temp point is >250°F.

  • Restart of the chillers with LOCA signal present (keylock switches on P700 also requires 86 lockout reset and chiller reset)

Override per this procedure and the operate the chiller IAW SO procedure

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5
Q

31EO-EOP-100-1/2

Secondary Containment Overrides and purpose

A

NOTE - Opening the following links overrides the SBGT auto start AND Secondary Containment isolation on Low RPV Water Level AND High Drywell Pressure.

  • Restarting of RB/RF ventilation on SC Isolation w/o rads.

Override per this procedure and the operate the ventilation IAW SO procedure

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6
Q

31EO-EOP-100-1/2

MSIV’s Overrides and purpose

A
  • Low water level isolation
    (Allows MSIVS to remain open during CP-3)
    (MSIV, MSL drains, and RW sample valves can be opened)
  • B21-F016 (MSL Drain) Isolation
    Overridden prior to 44 ft in containment to ensure valve is open prior to motor flooded
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7
Q

31EO-EOP-100-1/2

DW Pneumatics Overrides and purpose

A
  • Overrides leak isolation signal

Allows DW pneumatic valves to be opened to provide N2 to SRVs and MSIVs for operation

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8
Q

31EO-EOP-100-1/2

SBLC Overrides and purpose

A
  • Control switch override
    (Starts pump and fires squib valves when normal manual control room initiation has failed, think SBLC Placard)

Note: To inject SBLC locally, use the SO procedure.

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9
Q

31EO-EOP-101-1/2 Emergency Cont Venting
Suppression Chamber Venting
What system is used, overrides and what plant systems (power, etc) must be available to use this path?

A
  • Venting from CAD vent trains by overriding:
    o Hi DW Press
    o Low RWL
    o Rx Bldg Hi Rad
    o RF Hi Rad
    All of these are keylocked switches and located on the P654/P657

Need:

  • SBGT Running suction from RB
  • CAD A - Crit Inst Bus A
  • CAD B - Crit Inst Bus B
  • Non-interruptible air (N2 from bottles for HCVS; manual alignment required from SO procedure)
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10
Q

31EO-EOP-101-1/2 Emergency Cont Venting
Suppression Chamber Emergency Vent Path
What system is used, overrides and what plant systems (power, etc) must be available to use this path?

A
  • Venting performed using 18” Torus vent valves.
  • Rupture disk will rupture at 17 psig

Need:

  • SBGT Shutdown and Isolated from DW/Torus Vents
  • Crit Inst Bus A AND Crit Inst Bus B (crosstie of power supplies is allowed)
  • Non-interruptible air (N2 from bottles for HCVS; manual alignment required from SO procedure)
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11
Q

31EO-EOP-101-1/2 Emergency Cont Venting
Drywell Venting
What system is used, overrides and what plant systems (power, etc) must be available to use this path?

A
  • Venting from CAD vent trains by overriding:
    o Hi DW Press
    o Low RWL
    o Rx Bldg Hi Rad
    o RF Hi Rad
    All of these are keylocked switches and located on the P654/P657

Need:

  • SBGT Running suction from RB
  • CAD A - Crit Inst Bus A
  • CAD B - Crit Inst Bus B
  • Non-interruptible air (N2 from bottles for HCVS; manual alignment required from SO procedure)
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12
Q

31EO-EOP-101-1/2 Emergency Cont Venting
Drywell Emergency Vent Path
What system is used, overrides and what plant systems (power, etc) must be available to use this path?

A
  • Venting performed using 18” DW vent valves.
  • Rupture disk will rupture at 17 psig

Need:

  • SBGT Shutdown and Isolated from DW/Torus Vents
  • Crit Inst Bus A AND Crit Inst Bus B (crosstie of power supplies is allowed)
  • Non-interruptible air (N2 from bottles for HCVS; manual alignment required from SO procedure)
  • Open links to operate F319 and F320 18” Drywell vent valves
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13
Q

31EO-EOP-101-1/2 Emergency Cont Venting

What is the preferred vent path when venting containment?

A

4.5.1. Vent the Primary Containment (through the Suppression Pool if possible)

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14
Q

31EO-EOP-103-1/2 Control Rod Insertion Methods

ARI - How and Why is it used?

A
  • Manually arm and initiate ARI section 4.1
  • Reset ARI per section 4.2
    o If ARI initiation signals are not clear, then ARI is overridden by placing the Test switch in Test position.
    o This is used to allow for alt rod insertion methods (eg. Repeat Manual SCRAM, SCRAM Test Switches, etc)
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15
Q

31EO-EOP-103-1/2 Control Rod Insertion Methods

Repeating Manual SCRAM - How and Why is it used?

A

Used to address an ATWS caused by hydraulic lock

  • Bypass SDV Hi
  • All automatic SCRAMS jumpered out
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16
Q

31EO-EOP-103-1/2 Control Rod Insertion Methods

Deenergizing SCRAM Solenoids - How and Why is it used?

A

Used if SCRAM relays failed to de-energize

  • RPS Test switches are taken to TEST
  • If still energized, fuses are pulled.
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17
Q

31EO-EOP-103-1/2 Control Rod Insertion Methods

SCRAM Test Switches - How and Why is it used?

A

Small volume to SDV and Max dP on rod

  • SCRAM test switch is placed DOWN to SCRAM
  • When rod motion stops placed UP.
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18
Q

31EO-EOP-103-1/2 Control Rod Insertion Methods

Venting SCRAM Air Header - How and Why is it used?

A

If SCRAM valves failed to open

- Valve line-ups in the Rx Bldg (think of JPM)

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19
Q

31EO-EOP-103-1/2 Control Rod Insertion Methods

Driving Control Rods - How and Why is it used?

A

Should Always be attempted. Best Method get rod movement.

  • Mode switch in refuel
  • RWM bypassed
  • CRD adjusted
  • Insert with Emer IN(preferred) or Rod Movement Switch
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20
Q

31EO-EOP-103-1/2 Control Rod Insertion Methods

Cooling Water dP - How and Why is it used?

A

May assist in Rod movement, can cause seal damage

  • F034 closed
  • Controller in Manual 100% (for the F127 valve)
  • Fully open F003
  • Close F005
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21
Q

31EO-EOP-103-1/2 Control Rod Insertion Methods

Venting CRD W/D Port - How and Why is it used?

A

Last Resort to put dP across the rod for insertion due to high pressure and temp.
- Individual Rod withdrawal ports are operated by hand

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22
Q

31EO-EOP-104-1/2 PC Venting H2/O2 Control
Torus Venting
What system is used, overrides and what plant systems (power, etc) must be available to use this path?

A
  • Venting from both CAD vent trains by overriding:
    o Hi DW Press
    o Low RWL
    IF allow to override high rad by the PC Chart THEN:
    o Rx Bldg Hi Rad
    o RF Hi Rad
    All of these are keylocked switches and located on the P654/P657

Once Torus venting I/P, perform DW venting also.

Need:

  • SBGT Running suction from RB
  • CAD A - Crit Inst Bus A
  • CAD B - Crit Inst Bus B
  • Non-interruptible air (N2 from bottles for HCVS; manual alignment required from SO procedure)
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23
Q

31EO-EOP-104-1/2 PC Venting H2/O2 Control
Drywell Venting
What system is used, overrides and what plant systems (power, etc) must be available to use this path?

A
  • Venting from CAD vent trains by overriding:
    o Hi DW Press
    o Low RWL
    IF allow to override high rad by the PC Chart THEN:
    o Rx Bldg Hi Rad
    o RF Hi Rad
    All of these are keylocked switches and located on the P654/P657

Need:

  • SBGT Running suction from RB
  • CAD A - Crit Inst Bus A
  • CAD B - Crit Inst Bus B
  • Non-interruptible air (N2 from bottles for HCVS; manual alignment required from SO procedure)
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24
Q

31EO-EOP-104-1/2 PC Venting H2/O2 Control
Drywell Purging and Torus Purging with N2
What system is used, overrides and what plant systems (power, etc) must be available to use this path?

A

Normal DW and Torus Purge

  • Need Crit A and Crit B
  • Low volume purge (SCFH) from N2 Storage tank

CAD Loop A Purge

  • Need Crit A
  • Cross connect U2 to U1 N2 Tank(U1 to U2 N2) if desired.
  • High Volume Purge (SCFM)

CAD Loop B Purge

  • Need Crit B
  • High Volume Purge (SCFM)
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25
Q

31EO-EOP-104-1/2 PC Venting H2/O2 Control
Drywell Purging with Air
What system is used, overrides and what plant systems (power, etc) must be available to use this path?

A

IF DW > 1 psig then purge with N2

When DW <1 psig then secure N2 purge and purge with AIR.

Override and open the 18” vents and purge lines for DW and torus per this procedure

Need:

  • Crit A and B
  • Purge Fan
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26
Q

31EO-EOP-105-1/2 PC Water Level
PC Water Level using dP method
How is differential pressure determined (permanent gauges in the plant or installed gauges)? What equipment if any is needed, and where is it obtained from?

A

Unlike most EOPs that have prestaged equipment in the EOP gang boxes, the pressure gauges are obtained from the I&C shop.

  1. 1.1 Obtain two calibrated, 0-100 psig range pressure gauges, from I&C Instrument Shop.
  2. 1.2 Obtain two designated connection fittings from EOP gang box, 130’ elevation Unit 2(1), AND, attach to pressure gauges.
  3. 1.4 Install one gauge in the torus area 90’ elevation (valve specified in procedure)
  4. 1.7 Install second gauge on the 185’ of Rx Bldg
  5. 1.9 Read the pressures, determine dP and then use chart to determine level

Note - Level is in Feet above Torus Invert (89.5’ MSL)

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27
Q

31EO-EOP-105-1/2 PC Water Level
PC Water Level by Observing Flow
How is level determined in this method? What equipment if any is needed, and where is it obtained from?

A

This method of Primary Containment water level determination uses direct indication of water draining from test connections at known containment elevations to determine IF containment water level has reached that elevation.

Links for valves are located in the EOP link book at SS desk.

Tubing and tools are located in the EOP gang boxes on the 130’ Rx Bldg

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28
Q

31EO-EOP-106-1/2 Restoration of RPV Level following RPV Flooding
Entry Condition for this procedure and condition to perform actions.

A

3.0 Entry Condition
This procedure is performed only WHEN directed by Operations Management following RPV Flooding per Emergency Operating Procedure flow chart 31EO-EOP-016-2, CP-2, RPV Flooding, OR as directed through the TSC.

  1. 1 Verify the following conditions exist before permitting Reference Leg Keepfill:
    - RPV has been flooded to MSLs
    - All Drywell RTD temps <210°F

Then have maintenance backfill reference legs per 34GO-OPS-004-1/2

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29
Q

31EO-EOP-107-1/2 Alternate Pressure Control
SRV’s
Limitations

A
  • Torus level must be above 57.5(63)
  • Open in sequence to distribute heat in torus
  • If continuous pneumatic supply becomes unavailable, place each SRV in CLOSE or AUTO.
30
Q

31EO-EOP-107-1/2 Alternate Pressure Control
HPCI
Limitations and use

A
  • If init signal cannot be reset, do not perform
  • If isolation cannot be reset, do not perform
  • Override suction swap interlock (high torus)
  • Manually lineup HPCI for operation, lined up to CST.
  • Adjust HPCI turbine speed/flow with Controller AND by adjusting F008
  • If needed for level control, slowly throttle F008 to match RX press, then open F006
    torus heating)
31
Q

31EO-EOP-107-1/2 Alternate Pressure Control
HPCI Drains
Limitations and use

A
  • Not used if HPCI is available
  • Align Condenser for ops, if possible
  • If 10” cannot be drawn, do not continue
  • If HPCI isolation cannot be reset, do not continue.
  • Close F001
  • Open F002
  • Throttle F095 (manual valve in HPCI room) if rad levels permit
  • If not F095, Then F028/F029 as needed to maintain pressure
32
Q

31EO-EOP-107-1/2 Alternate Pressure Control
RCIC
Limitations and use

A
  • If initiation signal cannot be reset, do not perform
  • If isolation cannot be reset, do not perform
  • Override suction swap interlock (high torus) for HPCI and RCIC
  • Manually lineup RCIC for operation, lined up to CST.
  • Adjust RCIC turbine speed/Flow with Controller AND by adjusting F022 to make turbine work more or less
  • If needed for level control, slowly throttle F022 to match RX press, then open F013
33
Q

31EO-EOP-107-1/2 Alternate Pressure Control
RCIC Drains
Limitations and use

A

Not used if RCIC is available

  • Align Condenser for ops, if possible
  • If 10” cannot be drawn, do not continue
  • If RCIC isolation cannot be reset, do not continue.
  • Close F045, Open F007
  • Throttle F095 (manual valve in RCIC Room) if rad levels permit
  • If not F095 then F025/F026 as needed to maintain pressure
34
Q

31EO-EOP-107-1/2 Alternate Pressure Control
RFPT Turbines
Limitations and use

A
  • Not performed if C&F need for level
  • MSIV’s open or isolated low vacuum trip then bypass to less than 200 PSID & open
  • Align Condenser for ops, (<22.3”Hg or 17”Hg will limit turbine speed to <3500 RPM)
  • Place man open min flow valve
  • Close F-110 and F125
  • Vary RFT speed as necessary to maintain pressure
35
Q

31EO-EOP-107-1/2 Alternate Pressure Control
MSL Drains
Limitations and use

A
  • Align Condenser for ops if possible
  • If 10” cannot be drawn, do not continue
  • Open F016 and F019
  • Throttle F021 as necessary to maintain pressure
36
Q

31EO-EOP-107-1/2 Alternate Pressure Control
Chest Warming
Limitations and use

A
  • MSIV’s open or isolated low vacuum trip then bypass to less than 200 PSID & open
  • Confirm EHC operating
  • Align Condenser for ops (not if possible)
  • If 10” cannot be drawn, do not continue

-Setup turbine for chest warming and adjust MSV 2 position to a max of 12.5%.

37
Q

31EO-EOP-107-1/2 Alternate Pressure Control
RWCU Recirc Mode
Limitations and use

A 
If RWCU in service:
   -  Bypass demins &
   -  Throttle F044 to 250-260 GPM
If RWCU isolated:
   -  Isol due to high amb temp, or high diff flow  or high diff temp, do not continue until fixed.
   -  Isol due to SBLC, jumper out.
   -  Isol due to NRHX outlet, jumper out.
   -  Isol due to low RWL, jumper out.
    - Bypass demins, 
    - Reset isol, Open F001, F004, F042
    - Start previously running pump

For either of above, then:

- Throttle F044 to maintain 135-200 GPM
- Place both RBCCW HX on service
38
Q

31EO-EOP-107-1/2 Alternate Pressure Control
RWCU Blowdown Mode
Limitations and use

A

Confirm: NO boron injected
RWCU in operation

Open valves to condenser or Radwaste

Adjust F033 to maintain pressure & NRHX out <120 F

39
Q

31EO-EOP-107-1/2 Alternate Pressure Control
SJAE
Limitations and use

A
  • Off gas lined up to receive
  • Max SJAE supply pressure is 360 PSIG

If BOTH SJAEs service:
- Adjust supply pressure to maintain Rx pressure

If secured:

  • Open MSIV (no isol bypass)
  • Lineup to SJAE
  • Adjust supply pressure to maintain Rx Pressure
40
Q

31EO-EOP-108-1/2 Alternate RPV Depress
Turbine Bypass Valves
Limitations and use

A

Must have:

  • 10 inches vacuum &
  • No break outside Sec Cont &
  • No significant leakage on MSIVs
  • If MSIV’s closed, override isolations and open MSIV’s when less than 200 PSID.
  • Open bypass valves using bypass jack.
41
Q

31EO-EOP-108-1/2 Alternate RPV Depress
HPCI
Limitations and use

A
  • If initiation signal cannot be reset, do not perform.
  • If isolation cannot be reset, override isolation.
  • Manually lineup HPCI for operation, lined up to CST.
  • Adjust HPCI controller to 4250GPM AND adjust F008 until TCV fully open and discharge press < 1500 PSIG
42
Q

31EO-EOP-108-1/2 Alternate RPV Depress
HPCI Drains
Limitations and use

A
  • Not used if HPCI is available
  • Align Condenser for ops if possible
  • If 10” cannot be drawn, open Main Condenser vacuum breakers and start ALL TB HVAC
  • If HPCI isolation cannot be reset, override isolation
  • Open Drains, Close F001, Open F002
43
Q

31EO-EOP-108-1/2 Alternate RPV Depress
RCIC
Limitations and use

A
  • If initiation signal cannot be reset, do not perform.
  • If isolation cannot be reset, override isolation.
  • Manually lineup RCIC for operation, lined up to CST.
  • Start RCIC with Test Switch!!!!
  • Adjust controller to 400GPM AND adjust F022 until Gov Valve fully open and discharge press < 1500 PSIG
44
Q

31EO-EOP-108-1/2 Alternate RPV Depress
RCIC Drains
Limitations and use

A
  • Not used if RCIC is available
  • Align Condenser for ops if possible
  • If 10” cannot be drawn, open Main Condenser vacuum breakers and start ALL TB HVAC
  • If RCIC isolation cannot be reset, override isolation
  • Open Drains, Close F045, Open F007
45
Q

31EO-EOP-108-1/2 Alternate RPV Depress
RFP Turbines
Limitations and use

A
  • Performed if C&F not needed for level
  • Main Cond in Operation with Vacuum maintained >7” (<22.3”Hg or 17”Hg will limit turbine speed to <3500 RPM)
  • MSIV’s open or override isolations and open MSIV’s when less than 200 PSID.
  • Manually open min flow valves
  • Place RFP in service
  • Close F-110 and F125
  • Vary RFT speed as necessary to reduce pressure
46
Q

31EO-EOP-108-1/2 Alternate RPV Depress
MSL Drains
Limitations and use

A
  • Align Condenser for ops if possible
  • If 10” cannot be drawn, open Main Condenser vacuum breakers and start ALL TB HVAC
  • Bypass isolations for (as reqd) and open F016/F019
  • Throttle F021 as necessary to reduce pressure
47
Q

31EO-EOP-108-1/2 Alternate RPV Depress
Chest Warming
Limitations and use

A
  • MSIV’s open or override isolations and open MSIV’s when less than 200 PSID.
  • Align Condenser for ops if possible
  • If 10” cannot be drawn, open Main Condenser vacuum breakers and start ALL TB HVAC
  • Confirm EHC operating
  • Confirm turbine on TG
  • Setup turbine for chest warming and adjust MSV 2 position to depress
48
Q

31EO-EOP-108-1/2 Alternate RPV Depress
Head Vents and Drywell Coolers
Limitations and use

A
  • Place all available DW cooling in service, bypassing LOCA trip as necessary
  • U2 Place all available DW chillers in service, bypassing LOCA and LOSP trips as necessary.
  • Vent the Drywell w/ CAD and SBGT
  • Secure all drywell sump pumps and PTL.
  • Open head vents F004 and F003
49
Q

31EO-EOP-108-1/2 Alternate RPV Depress
RWCU Recirc Mode
Limitations and use

A

If RWCU in service:
- Bypass demins & Throttle F044 to 250-260 GPM

If RWCU isolated:
     - Isol due to high amb temp, or high diff flow or high diff temp, do not continue until fixed.
     - Isol due to SBLC, jumper out.
     - Isol due to NRHX outlet, jumper out.
     - Isol due to low RWL, jumper out.
     - Bypass demins, 
     - Reset isol, Open F001, F004, F042
     Start previously running pump

For either of above, then:

 - Throttle F044 to maintain 250-260 GPM
 - Place both RBCCW HX on service
50
Q

31EO-EOP-109-1/2 Alternate Boron Injection
CRD
Lineup for Injection

A
  • One pump in operation
  • Flow through the F005
  • Suction from CST
  • Install adapter in suction filter
  • Connect to the SBLC Combined Drain

CAUTION: CRD Pumps will experience Runout at 190 (210) gpm. This corresponds to 1180 (1130) psig

  • Close Min Flow Valve
  • Valve in the filter connected to SBLC hose
  • Inject maintaining vacuum above trip setpoint
51
Q

31EO-EOP-109-1/2 Alternate Boron Injection
HPCI
Lineup for Injection

A
  • HPCI in operation
  • Install adapter in both suction paths
  • Connect to the SBLC Combined Drain

Note:HPCI must inject at 960 (619) GPM for proper cooling of HPCI pump.

  • Close F012 (min flow) and open breaker
  • At 20% tank level, secure heaters
52
Q

31EO-EOP-109-1/2 Alternate Boron Injection
RCIC
Lineup for Injection

A
  • RCIC in operation
  • Install adapter in both suction paths
  • Connect to the SBLC Combined Drain

Note: RCIC must inject at 122.5 GPM for proper cooling of RCIC pump.

  • Close F019 (min flow) and open breaker
  • At 20% tank level, secure heaters
53
Q

31EO-EOP-109-1/2 Alternate Boron Injection
Additional Boron Addition
What actions are needed?

A
  • Fill tank with Demin water
  • > 1000 gallons (20% tank level), energize heaters
  • Use air sparger
  • > 110 F add sodium pentaborate
  • Fill to min volume 2720 gal (52.8%) for enriched sodium pentaborate
  • Maintain >100 F to aid mixing
54
Q

31EO-EOP-110-1/2 Alternate RPV Level Control
RHR/LPCI Injection Path:
RHRSW Injection
Limitations and Operation

A

Caution: Do not perform this for any loop of LPCI that is in operation.

  • Lineup RHRSW to RHR via cross tie valves F073 and F075.
  • Crosstie RHRSW via 119’s as necessary
  • Flow rates 4400/8800 GPM
55
Q

31EO-EOP-110-1/2 Alternate RPV Level Control
RHR/LPCI Injection Path:
Condensate Transfer to RHR
Limitations and Operation

A

Caution: Do not perform this for any loop of LPCI that is in operation.

  • Inject using BOTH condensate transfer pumps
56
Q

31EO-EOP-110-1/2 Alternate RPV Level Control
RHR/LPCI Injection Path:
Fire Water Via Cond Xfer
Limitations and Operation

A

Caution: Do not perform this for any loop of LPCI that is in operation.

  • Cond Xfer not available during use of this section
  • If using crosstie(primary method for U2), then the Flow path is from Opposite Unit’s CST/Hydrant via CST Crosstie piping.
    o Unit 1 CST Hydrant 12
    o Unit 2 CST Hydrant 11
    -Cond Xfer to RHR.

Unit 1 - Piping connections outside pump moat wall.
Unit 2 - Check Valve disassembly B Pump Only

57
Q

31EO-EOP-110-1/2 Alternate RPV Level Control
RHR/LPCI Injection Path:
Loop Crosstie
Limitations and Operation

A

This method will be useful when one RHR loop has available pumps with an unavailable injection flowpath AND the other RHR loop has an available injection flowpath with unavailable pumps.

  • Close breaker for F010 valve and open to crosstie RHR
58
Q

31EO-EOP-110-1/2 Alternate RPV Level Control
ECCS Keep Fill (Jockey Pump) Injection
Limitations and Operation

A

Note: ECCS Jockey Pump injection will occur only via RHR AND Core Spray loops NOT in operation.

  • When reactor pressure is below 100 psig, close min flow valve for jockey pump to maximize injection.
59
Q

31EO-EOP-110-1/2 Alternate RPV Level Control
SBLC
Limitations and Operation

A

Can’t be used if SBLC in operation

  • SBLC pumps are either operated from the normal tank or lined up to the test tank.
  • Normal/ Test tank level is maintained using Demin or any available fire hose.
  • The SBLC pumps are started and stopped to maintain tank level and inject.
60
Q

31EO-EOP-111-1/2 Emergency Opening of MSIV’s

When is this required per RCA? Limitations

A

RCA:

  • Boron Injection Required
  • Main Condenser Available
  • No indication of MSL break
  • The MSIVs should be capable of opening against a differential pressure of up to 200 psid
61
Q

31EO-EOP-113-1/2 Terminate and Prevent Injection

What are the two level strategies used in this procedure?

A

ATWS Water Level - Used to reduce level in the vessel to lower Rx power. Previous version titled this section Power/Level Control.

Emergency Depress - Used to control systems when ED is implemented to ensure injection is prevented until below MSCP.

62
Q

31EO-EOP-113-1/2 Terminate and Prevent Injection
T/P ATWS
HPCI Actions

A

Actions for ED and ATWS are the same for HPCI

IF HPCI is NOT operating perform one of the following:

  1. If Operation is not desired place AUX Oil Pump in PTL.
  2. If Operation is desired AND injection not desired place controller in Man/50% or discharge pressure below RPV pressure with turbine speed >2000 RPM.

If HPCI is Operating then perform one of the following:

  1. Operation not desired, Then Trip HPCI with placard.
  2. Operation desired, reduce controller to prevent injection with turbine speed >2000 RPM.
63
Q

31EO-EOP-113-1/2 Terminate and Prevent Injection
T/P Emergency Depress
HPCI Actions

A

Actions for ED and ATWS are the same for HPCI

IF HPCI is NOT operating perform one of the following:

  1. If Operation is not desired place AUX Oil Pump in PTL.
  2. If Operation is desired AND injection not desired place controller in Man/50% or discharge pressure below RPV pressure with turbine speed >2000 RPM.

If HPCI is Operating then perform one of the following:

  1. Operation not desired, Then Trip HPCI with placard.
  2. Operation desired, reduce controller to prevent injection with turbine speed >2000 RPM.
64
Q

31EO-EOP-113-1/2 Terminate and Prevent Injection
T/P ATWS
Cond and Feed Actions

A
  • Control RFPTs w/ discharge pressure below Rx pressure.
  • Close the F110(F406) S/U Level Bypass
  • Close the F125(F036) S/U Level Isolation
65
Q

31EO-EOP-113-1/2 Terminate and Prevent Injection
T/P Emergency Depress
Cond and Feed Actions

A
  • Trip both RFPTs
  • Trip ALL CBPs
  • Trip ALL but One CP
  • Close the F110(F406) S/U Level Bypass
  • Close the F125(F036) S/U Level Isolation
66
Q

31EO-EOP-113-1/2 Terminate and Prevent Injection
T/P ATWS
Core Spray Actions

A

NOTE: If Rx Press is > CS shutoff head then this subsection does not have to be completed for actions to be considered complete.

  • Open Links for F005A/B
67
Q

31EO-EOP-113-1/2 Terminate and Prevent Injection
T/P Emergency Depress
Core Spray Actions

A
  • Close the F005A/B
  • Trip pumps
    Note: T/P can be considered complete however continuous monitoring of the CS system will be required.
  • Open Links for F005A/B
68
Q

31EO-EOP-113-1/2 Terminate and Prevent Injection
T/P ATWS
LPCI Actions

A

NOTE: If Rx Press is > RHR shutoff head then this subsection does not have to be completed for actions to be considered complete.

  • Close the F017A/B
  • Open Links for F017A/B
  • If F017’s wont close then Close F015’s and open links
69
Q

31EO-EOP-113-1/2 Terminate and Prevent Injection
T/P Emergency Depress
LPCI Actions

A

Note: If EOP-114 is complete or ATWS actions per this procedure is complete then this section is complete. (ie the links have been opened for F017s and valves closed)

If Immediate T/P is performed:
- Close F016 Containment Spray O/B Valve
- Close F028 Torus Spray Valve
- Trip pumps
Then, 
- Close F017s
- Open Links for F017s
- If F017's wont close then Close F015's and open links
70
Q

31EO-EOP-114-1/2 Terminate and Prevent Injection

When is this required per RCA? Limitations

A

PREVENT injection from LPCI & CORE SPRAY with Drywell Pressure above 1.85 PSIG

Except when required for adequate core cooling.

This procedure is NOT required if EOP-113 has been performed.

71
Q

31EO-EOP-114-1/2 Terminate and Prevent Injection

Core Spray Actions

A
  • Close the F005A/B

- Trip the pumps

72
Q

31EO-EOP-114-1/2 Terminate and Prevent Injection

LPCI Actions

A

If Immediate Prevention of LPCI is required:

  • Close F016 Cnmt Spray
  • Close F028 Torus Spray
  • Trip the pumps

Not Immediate Termination:

  • Close F017A/B
  • Open Links for F017
  • If F017’s wont close then Close F015’s and open links

Hatch ILT-14 Study Guide (14 decks)

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