Limits

Occupational Exposure Limits/Permissibles
Adults 18 and over
5,000 Millirems per year (Deep Dose EquivalentDDE)
1250 Millirems per quarter
420 Millirems per month
15,000 Millirems per year (Lens of Eye Dose EquivalentLDE)
50,000 Millirems per year (Shallow Dose EquivalentSDE)
50,000 Millirems per year
12,500 Millirems per quarter
4,200 Millirems per month
Children under 18
10% of Adult dose
500 Millirems per year
125 Millirems per quarter
50 Millirems per month
Baby Monitor
500 Millirems per entire 9month gestation period
50 Millirems per month
Badge should be worn in abdominal area behind lead apron
DDE (Deep Dose Equivalent)(H_{d}), that applies to external whole body exposure. The dose equivalent at a tissue depth of 1 centimeter (cm) (1,000 milligrams per square centimeter)(mg/cm^{2}).
LDE (Lens Dose Equivalent) the external dose equivalent to the lens of the eye at a tissue depth of 0.3 cm (300mg/cm^{2}).
SDE (Shallow Dose Equivalent)(H_{s}), that applies to the external exposure of the skin or an extremity. The dose equivalent at a tissue depth of 0.007 cm (7mg/cm^{2}) averaged over an area of 1 square centimeter (cm^{2}).