EOP Flashcards
What is adverse containment?
5 psig
10E5 R/hr
During ELAP Unit PRZ and SG temps verified below 196.8*F
If rad levels exceed 10E5 R/hr and eventually come back down, do you still have to use adverse containment values?
YES, until evaluated for integral dose
What is the order of priority of the Critical Safety Functions?
Subcriticality
Core Cooling
Heat Sink
Integrity
Containment
Inventory
Which CSFs require continuous monitoring?
Red or Orange
What are the fission product barriers?
Fuel Cladding
RCS
Containment
E-Plan
What are the methods of heat removal for a SBLOCA?
ECCS Flow / Breaker Flow
AFW / SGs
Why is a CL Break considered the worst scenario for a SBLOCA?
More mass is lost prior to ECCS flow equaling break flow. The cross under loop seal must be clear before steam can be vented from the break
What are indications of a faulted SG?
Tave lowers
Rx Power Rises
Possible turbine load lowering
SF > FF
What are indications of SGTR?
SJAE / GSLO Rad monitors high
SG Level rising uncontrollably
PRZ Pressure and Level Lowering
What are indications of a LOCA?
Containment Rad Monitor & Dew Point rising
PRZ Level and Pressure lowering
What is the SI Termination Criteria found in ES-1.1
Subcooling > 40*F
Heat Sink by SG level >13% OR > 240K ppm
RCS Pressure stable / rising
PRZ Level 16% (20%)
What does meeting your SI termination subcooling criteria tell you?
Adequate core cooling and secondary heat sink
What does meeting your heat sink SI termination criteria tell you?
Ensure subcooling will be maintained following termination
What does meeting your RCS Pressure SI Termination criteria tell you?
Ensures subcooling will be stable / rising and SI flow is effective in raising RCS Inventory
What does meeting your PRZ Level SI Termination Criteria tell you?
Sufficient RCS Inventory
Only valid if RC is subcooled
Ensures ability to maintain pressure following termination
Why do RCPs need to be tripped on a phase B?
Loss of CCW flow to RCP LO Coolers
Where do you transition from in E-0 if a Rx Trip is not successful?
FR-S.1
What is the order of diagnostic transitions in E-0 and why ?
E-2, easy to find/fix and can mask other issues
E-3, stops offsite dose. Lots of TCAs
E-1, auto actions can handle it
In E-0, why do we lower AW to < 450K pph?
Limits overcooling the RCS
In E-0, why is the minimum AFW 240K pph until the minimum SG water level is maintained?
ENsures enough FW flow for decay heat removal. Also, min # for Heat Sink CSF Status Tree
What are the entry conditions for ES-0.0, Rediagnosis?
ALL of the following:
SI is I/S or Required
E-0 has been exited
E-Series procedure in progress
What must be done after a reactor trip for each control rod not fully inserted?
Borate 160 (150) ppm for each rod
If in ES-0.1, Reactor Trip Response, what do you do if you get an SI?
Return to Step 1 of E-0
Why would you transition from ES-0.2, Natural Circ Cooldown to ES-0.3, NC Cooldown w Steam Void?
If CST Inventory is low
After LOOP when a high rate of planned Cooldown and depressurization is required due to reduced CST inventory