Section 325.5454. Ventilation systems.

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(1) An accessible airborne radioactivity area shall be provided with ventilation adequate to reduce airborne radioactivity to concentrations which do not exceed the limits specified in column 1, table I of rules 261 to 269.

(2) A licensee or registrant shall not vent, release or otherwise discharge concentrations of radioactive material from an airborne radioactivity area to an uncontrolled area which exceed the limits specified in table II of rules 261 to 269 except as authorized pursuant to subrule (2) of rule 238 of part 5. For purposes of this subrule, concentrations may be averaged over a period not greater than one year.

History: 1979 AC.

                    
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