PURPOSE: This rule provides necessary information regarding requirements for room shielding for diagnostic and therapeutic installations.

1. (1) The requirements for room shielding shall conform to the requirements defined in the various handbooks published by the United States Department of Commerce and National Bureau of Standards.

AUTHORITY: section 192.420, RSMo 1986.* This rule was previously filed as 13 CSR 50- 90.190. Original rule filed Nov. 9, 1964, effective Dec. 9, 1964. *Original authority: 192.420, RSMo 1963.