fuel damage/ loss of SFP cooling

who will notify the MCR that new fuel has damage and who will notify the MCR that new fuel may be damaged?

notified by fuel handling supervisor that fuel cladding of new fuel assemblies may be damaged

notified by fuel handling group that an event has occurred where fuel damage may be suspected 

what is the concern with placing a damaged fuel assembly in the core?

placing a fuel assembly in an unanalyzed position could challenge the required SDM

what is required during a breached fuel cladding event?

evacuate non-essential personal from the fuel BLDG and CTMT

in CTMT

1. actuate CPIAS/CREFAS

2. close airlocks

3. close equipment hatch

fuel building

1. actuate FBEVAS/CREFAS

   1. ensure equal number aux Bldg supply and exhaust fans are running

who will initiate the fuel handling event recovery checklist

initiated by RSRO or FHS for fuel handling problems

who will determine the safe intermediate storage locations?

placement will be at the RSROs discretion

what are the entry conditions for Loss of SFP cooling or level?

Low level alarm or less than 137’ on any spent fuel level instrument

loss of cooling hi temp alarm or pump problems

what are the exit conditions for a loss of SFP cooling?

temperature controlled to less than 145F

what are the milestone levels for the SFP?

138’1” normal level

137’4” LCO 3.7.14. 23ft above fuel assemblies

131’10” loss of PC pump suction

130’2” lowest level due to pipe break/valve misalignment

what is the design bases for time to boil in M1-4 and during full core offload 

M1-4 16.7 hours 

full core offload 3.46 hours 

where should fuel that is being moved be placed during a loss of level or cooling?

place in storage rack (loss of cooling only) OR lower F/A to just above the floor in the deep area of the SFP

if PCN-V118 is open, what affect does the delta P between the CTMT building and the FB have on pool levels

Delta P creates a monometer effect between the buildings

what are the consequences of aligning SDC to the SFP during a loss of SFP cooling have?

aligning SDC to SFP does not make SDC non-functional

augment SDC results in a higher level in the refueling pool than in the SFP due to lineup required to allow refueling pool water to flow into the SFP