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The intensity of an unshielded I-131 source is 32mR/hr. If the source is put into a lead shield 3...

The intensity of an unshielded I-131 source is 32mR/hr. If the source is put into a lead shield 30mm thick what would be the intensity on the outside of the shield? Assume your distance from the source has not changed. The HVL of lead for I-131 is 0.178cm.

A technician is in an area for 10 minutes and the reading on an exposure meter is 5mR/hr. Determine the actual radiation dose received by the technician. The technician should not receive a radiation dose greater than 1mR.

Based upon the previous conditions determine the maximum time the technician can stay in the area The intensity of radiation is 42R/hr 3.5 meters from a source. Determine the 50, 10 and 1mR/hr boundary distances.

Why would true dosages vary from those calculated and what precautions should be taken.

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