Chapter 9
Safety and Health at Irradiation Facilities
Fighly radioactive sources are used in various research studies
1.
Initiation of chemical reactions
2.
Food and drug sterilization
2.
Radiation effects on materials
Potential personnel hazard from intense external exposure to gamma
radiations
Pool-type facilities
1.
Shielding by water against radiation
2.
Water in pool constantly purified
Radiation Caves
1.
Shielding provided by thick concrete walls and lead-glass
windows
2,
3.
Viewing operation
a.
lLead-glass windows
b.
Zinc-bromide windows
c,
Periscopes
d.
Mirror systems
Taking advantage of natural shielding to reduce construction
costs
4.
Labyrinths
5.
Interlock systems
a.
Personnel prevented from entering cave when source is out
of storage walls