EOPFirst Flashcards by Donald Cooked

The frequency to qualify for consideration in the EOP network is:

10 E-8 events / reactor year

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When is the foldout page criteria applicable?

Any time THAT procedure is in effect

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What are the conditions and exit criteria for Adverse Containment?

Containment Pressure 5+ psig. Can be exited as soon as pressure drops below
Radiation level of 1E5 R/hr. Once level drops below, must be evaluated for integral dose. If Accumulated dose >10E6 R/hr, equipment has been physically damaged.
During ELAP until PRZ and SG temps are verified below 196.8*F

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What’s the procedural hierarchy?

FRGs Red/Orange (unless ECA-0 or ES-1.3)
EOPs
Emergency Remote Procedures
AOPs
ARPs
NOPs

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If a contingency action cannot be performed, what must be done?

The crew must proceed to the next step or sub step in the left hand column

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What’s the order of priority for the Critical Safety Functions?

S - Subcriticality

C - Core Cooling

H - Heat Sink

P - Integrity

Z - Containment

I - Inventory

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If you have an Orange path on a CSF, how often must it be monitored?

Continuously

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If you have an Red path on a CSF, how often must it be monitored?

Continuously

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If you have an Yellow path on a CSF, how often must it be monitored?

Not satisfied, Every 10-20 mins

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If you have an Green path on a CSF, how often must it be monitored?

Satisfied - Every 10-20 mins

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If Containment CSF has a Red path and Core Cooling has an orange path, which is the higher priority?

Containment. A RED path has more urgency than any other color.

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Who has the responsibility for switching from the NOP to the EOP status tree monitoring when there is an event?

STA

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What are the fission product barriers?

Fuel Cladding
RCS
Containment
E-Plan

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If an FRG is entered (writing in the procedure), can it be exited if the CSF turns green?

NO!

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What are indications of a Faulted SG?

Tave Drops

RCS Pressure Lowering

PRZ Level Lowering

SG Pressure / Temp Lowering

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What are the indications of a SGTR?

RCS Pressure Lowering

Rad Alarms on SJAE and Gland Steam Condenser Monitors

SG Level rising uncontrollably

PRZ Level Lowering

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What are the indications of a LOCA?

Containment pressure rising

Dew point Rising

Containment Rad Monitor Alarm

RCS Pressure lowering

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What are the normal Post Trip conditions of the following?

RCS Subcooling

WR Log Power

WR SUR

PRZ Level

RCS Pressure

SG Pressures

SG Levels

RCS Tave

RCS Subcooling > 40 *F. Rises to 95 *F rapidly then to 100 *F

WR Log Power < 5%

WR SUR Negative

PRZ Level Drops to 25% then to 22%

RCS Pressure Gradually returns to pre-trip conditions

SG Pressures ~1000 psig

SG Levels - off-scale low

RCS Tave 547 *F

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What are the modes of applicability for E-0?

Rx Trip - Modes 1 & 2

SI - Modes 1-3

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What are the Entry Conditions for E-0?

Any RPS Signal Exceeds setpoint

Any SI Signal

Manual Rx Trip

Direct Entry

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What are the Major Action Categories for E-0

Verify auto actions of safeguards systems
Identify appropriated Optimal Recovery Procedure
Shutdown unnecessary Equipment and continue to identify ORP

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What is the E-0 FOP Criteria?

CL Recirc - 30% RWST Level
AFW Switchover - 15% CST
RCP Trip - Phase B or RCS Pressure at 1300 psig AND CCP or SI Pump Running

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What’s the reasoning for Tripping a RCP during a phase B?

RCP Motor bearing will overheat because CCW flow to RCP LO Coolers has been isolated

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What are the order of diagnostic transitions from E-0 and why?

E-2, Easy to find/fix, Impacts many CSFs and Masks other issues

E-3, Stop offsite dose, Unique, Detailed Actions

E-1, AUTO Actions handle it

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What are the transitions for E-0?

FR-S.1 ECA-0.0 ES-0.1 FR-H.1 FRP-S.1 ES-1.1 E-1 E-2 E-3 ECA-1.2

Why would you enter FR-S.1 from E-0?

MT Trips but unsuccessful Rx Trip

If the main turbine trips but the Rx does not, what is the E-Plan Call?

Alert of SEA for RPS Failure

What’s the time limit for that power cannot be established to 1+ safeguards bus for an E-plan call?

> 15 mins

When would you enter ES-0.1 from E-0?

If an SI is not actuated nor required...

When would you enter E-1 from E-0?

If a PORV / Block valve cannot be closed LOCA RCS pressure below RHR Shutoffhead

What are the immediate actions of E-0?

Verify Rx Tripped Verify Turbine Tripped Verify Power to AC Emergency Buses Check SI Status

Why do we lower AFW Flow to < 450,000 ppl?

Limits over cooling the RCS

Whey do we maintain AFW Flow > 240,000 ppm until SG water level is obtained?

Ensure enough flow for decay heat removal Key number for Heat Sink CSF

What is the ECCS Termination Criterion?

Subcooling >40*F Heat Sink SG > 13% RCS Pressure stable or rising PRZ Level

What are the Entry Conditions for ES-0.0, Rediagnosis

Operator doubt as to which procedure should be in effect ALL of the following are met: 1. SI is I/S or required 2. E-0 has been exited 3. E-Series EOP is in progress

What are the ES-0.0, Rediagnosis Major Action Categories?

1. Check if any SGs are not faulted 2. Check if any SG is faulted and if it was not isolated 3. Check if there is a SGTR

What are all possible Transitions from ES-0.0, Rediagnosis?

E-1 or ECA-1 E-2 E-3 or ECA-3 ECA-2.1

When would you enter E-1 from ES-0.0, Rediagnosis?

No indications of Tube Rupture

When would you enter E-2 from ES-0.0, Rediagnosis?

MSIVs open and ALL SG pressures lowering uncontrollably Faulted and not isolated SG

When would you enter E-3 from ES-0.0, Rediagnosis?

High Rad or SG Level Rising Uncontrollably

When would you enter ECA-2.1 from E-0.0, Rediagnosis?

MSIVs shut and ALL SG pressures lowering uncontrollably

What are the FOP criterion for ES-0.0, rediagnosis?

SI Actuation AFW Swtichover E-0 Transition if SI actuates

What is to preferred order of water sources for AFW switchover?

1. Other unit’s CST | 2. CST crosstie with opposite’s pump

What are the Entry Conditions for ES-0.1, Rx Trip Response?

From E-0, Step 4 when SI is neither actuated nor required

What are the Major Action Categories for ES-0.1, Rx Trip Response?

1. Ensure Primary Stabilizes at No Load Conditions 2. Ensure Secondary Stabilizes at No Load Conditions 3. Ensure power is available to necessary components 4. Establish / Maintain Forced Circ of the RCS 5. Maintain stable RCS conditions

How much do you borate for each control rod not fully inserted?

U1- 160 ppm U2- 150 ppm

What is the FOP Criteria for ES-0.1, Rx Trip Response?

SI Actuation Criteria AFW Switchover Criteria E-0 Transition if SI actuates

What are the potential transitions from ES-0.1, Rx Trip Response?

E-0, Step 1 if spurious SI occurs ES-0.2 if natural circ cooldown is required

What’s the purpose of resetting AMSAC during the Rx Trip Response?

To clear the lockout of the TDAFP auto start TS 3.7.5, TDAFP needed in M3

What are the Entry Conditions for ES-0.2, Natural Circ Cooldown?

From ES-0.1 and ECA-0.1 if a natural circ cooldown is required From ES-0.3 if the first 13 steps of ES-0.2 have not yet been performed

What do the first 13 steps of ES-0.2, Natural Circ Cooldown accomplish?

Borate to cold shutdown and block the low pressure SI

What are the Major Action Categories of ES-0.2, Natural Circ Cooldown?

1. Try to start an RCP (forced circ is better) 2. Cooldown and depressurization the RCS with no void growth 3. Lockout SI 4. Place RHR I/S (<350*F and 350-400 psig) 5. Cooldown to cold shutdown (25*F per hour with RHR)

What’s the FOP Criteria for ES-0.2, Natural Circ Cooldown?

SI actuation Criteria - < 40*F subcooling AFW Switchover- 15% CST RCP Restart ES-0.3 transition if voids are expected E-0 if SI occurs

What are the transitions from ES-0.2, Natural Circ Cooldown

ES-0.3, Natural Circ Cooldown w a steam void after step 13 IF CST inventory is low and after loss of offsite power when a high rate of planned cooldown and depressurization is required due to reduced CST inventory

In ES-0.2, Natural Circ Cooldown, what is down if SDM is inadequate?

Procedure loop that requires operator to continue berating until cold shutdown boron concentration is established and verified

At the onset of Natural Circ, what is removing MOST the heat from Reactor Vessel Head?

CRDMs

If ALL CRDMs are running, what is the minimum subcooling requirement?

90*F

If less than all CRDMs are running, what is the minimum subcooling requirement?

220*F to prevent possible void formation in upper head

Inoperable CRDMs means....

Total upper head area cooldown rate will be less, so greater subcooling must be maintained.

What’s the entry condition for ES-0.3, Natural Circ Cooldown with steam void in vessel with RVLIS?

ONLY from ES-0.2, after completion of the first 13 steps

What are the FOP Items for ES-0.3, Natural Circ Cooldown with Steam Void in Vessel with RVLIS?

SI Actuation Criteria AFW Switchover E-0 if SI occurs RCP Restart Criteria

Why do we want to restart an RCP if all are stopped?

Enhance core heat removal Improves RCS Pressure and Temp Control Improves PRZ Level Control

Why is RCP 3 the most effective RCP for PRZ Spray

Most dP bc it is in the loop with the surge line

What’s necessary to restart an RCP?

No Void Power to the Bus RCP Cooling Thermal Barrier Cooling water dP high alarms clear #1 Seal dP > 200 psig #1 Seal Leakoff > RCS Pressure dependent value Bearing lift pump running for 2 mins

What could happen if you start an RCP with a steam void in the upper head?

Reduced subcooling Moves void to PRZ or SG Tubes

What is the main indication of Natural Circ?

RCS Subcooling based on CETCs > 40*F

What are all the indications of Natural Circ?

RCS Subcooling > 40*F Stable or Lowering: - SG Pressures - RCS HL Temps - CETCs RCS CL Temps at saturation temp for SG Pressure

If you can’t verify Natural Circ, what do you do?

Raise steam dump flow

What is the expected parameters for the following during Natural Circ? RCS dT RCS Subcooling SG Pressures

RCS dT- rises 20-30*F, so Tave ~ 15*F higher RCS Subcooling - Drops to about 60-70*F SG Pressures - Stabilizes at 1025 psig on PORVs

What are the physical requirements for Natural Circ?

Heat Sink higher elevation than Heat Source and a flowpath between the 2 Density gradients must exist