Occupational Doses and Radiation Saftey Flashcards
Occupational annual limit is for the
whole body/ total effective dose equivalent
Occupational annual limit
50mSv/year
Occupational Dose for lens of eye
150 mSv/year
Occupational Dose for skin
500mSv/ year
Occupational Dose extremities
500mSv/ year
Occupational Dose pregnancy/ fetal dose
5mSv
Pregnancy doses: permanent sterility (adult)
5Gy
Pregnancy doses: embryonic death
100-500mGy
Pregnancy doses: max permitted dose to fetus of pregnant worker
0.5mSv (50mrem)
Pregnancy doses: total gestational dose equivalent
5mSv (500mrem)
Pregnancy doses: risk of congential malformation
120 to 1 rem
Non occupational Doses: annual limit
1mSv/year
Non occupational Doses: expsoure to radon and its decay products
> 0.007 Jhm^-3
Non occupational Doses: hourly limit from external sources in unrestricted areas
0.02mSv
Non occupational Doses: lens of eye, skin and extremities
50mSv
Package surface dose
2mSv/ hour at any point on the package surface
2 meters from the packakage
0.1 mSv/ hour
Primary barrier thickness formula
P=BWUT/d^2
Primary barrier thickness: B
Barrier transmission factor
Primary barrier thickness: W
workload
Primary barrier thickness: U
use
Primary barrier thickness: T
occupancy
Primary barrier thickness: d
distance from target/ source of radiation
MRI: Magnetism
electromagnetic property with the same directionality as the magnetic moment in an atomic nucleus
