R 333.5441 Class C installations.

Rule 441. (1) Class C installations shall comply with all requirements of R 333.5439 except for a permissible dose equivalent rate of 50 millirems per hour at an accessible external point. (2) The maximum weekly accelerator beam on time shall be established by the department under the conditions specified in the application for specific license or registration. (3) Warning signs shall be posted in those areas outside the enclosure in which the radiation exposure dose equivalent rate in air at an accessible external point exceeds 2 millirems per hour under conditions of maximum radiation output permitted by the design or limited operating characteristics of the accelerator. (4) A daily usage log shall be maintained to record machine operation. The record shall be available at the accelerator site for examination by the department.