NCRP-147 Shielding Models 147 Shielding Models - Radiation ...
NCRP-147 Shielding Models 147 Shielding Models - Radiation ...
NCRP-147 Shielding Models 147 Shielding Models - Radiation ...
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<strong>Shielding</strong> Model No. 3 for<br />
“Representative Rooms”<br />
• (Using XRAYBARR) <strong>NCRP</strong>-<strong>147</strong> shows<br />
barrier thickness requirements calculated for<br />
representative rooms:<br />
– Assume conservatively small room layout<br />
• assures maximum contribution from all sources<br />
– Presumes that the kinds of exposures made<br />
amongst the various x-ray tubes/positions follow<br />
those observed by the AAPM TG-9 survey<br />
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