Hazard analysis Flashcards
1
Q
What is the buildup factor
A
Photons outside of shield : primary photo ratio
2
Q
What is the threshold voltage to create ionizing radiation
A
10 kV
3
Q
What is lapse rate
A
Temperature gradient of the atmosphere
4
Q
Gamma dose contribution given gamma energy,E, (MeV) and concentration, x, (uCi/ml)
A
D=0.25(E)(x)
5
Q
Define DAC
A
2000 DAC hrs = regulatory limit (5rem)
6
Q
Criticality alarm is required where free air absorbed dose is greater than
A
12 rad
7
Q
For low radioactivity what is the minimum face velocity
A
125 feet/min
