License and Tech Spec Flashcards
topic 15
UCI TRIGA Reactor license
for medical, research, or development; up to 5 kilograms U235 enriched in detectors, fission plates, foils, chemical compounds and solutions;
reactor shutdown
subcritical by at least $1.00 reactivity in reference core conditions (all control rods in, no core work in progress, key removed)
channel check
qualitative verification of acceptable performance
channel test
signal introduction to channel to verify operation
channel calibration
adjustment of the entire channel such that output corresponds with acceptable accuracy
operable
component or system is capable of performing the intended function
operating
component or system is performing intended function
reactor secured
insufficient moderator or fissile material to attain criticality; all control rods down, key removed, no core work, no experiments moving
shutdown margin
minimum shutdown reactivity necessary to be subcritical from any permissible operating condition; >$0.55
monthly
not to exceed 6 weeks
quarterly
not to exceed 4 months
semi-annual
not to exceed 7.5 months
annnual
not to exceed 15 months
biennial
not to exceed 2.5 years
quinquennial
not to exceed 6 years
fuel safety limit
1000 degrees C; to maintain fuel integrity and prevent fission product release
fuel limiting safety system setting
425 degrees C; scram trip for fuel temperature to prevent reaching safety limit
pulse
after steady state power level is less than 1 kW and total reactivity worth of FTR and ATR is less than $3.00 combined;
damaged fuel
bend > 1/16 inch over element length; grother > 1/8 inch
needed pulsing channels and scrams
fuel element temperature and power level; all scrams except reactor power
experiment rules
unsecured or moveable experiments are <$1.00; single experiment reactivity <$3.00; sum of all experiments <$3.00
