Section 180-7-039 - STORAGE AND CONTROL OF VOLATILES AND GASES039.01VOLATILE RADIOACTIVE MATERIAL AND RADIOACTIVE GASES. A licensee must store volatile radioactive material and radioactive gases in a radiation shield and container.039.02MULTI-DOSE CONTAINER. A licensee must store and use a multi-dose container in a properly functioning fume hood.039.03AIRBORNE CONCENTRATIONS. A licensee who administers radioactive aerosols or gases must do so with a system that will keep airborne concentrations within the limits prescribed in 180 NAC 4.039.04VENTILATION. The system must either be directly vented to the atmosphere through an air exhaust or provide for collection and decay or disposal of the aerosol or gas in a shielded container.039.05COLLECTION SYSTEM OPERATIONS CHECK. A licensee must check the operation of collection systems monthly and measure the ventilation rates in areas of use at intervals not to exceed six months. Records of these checks and measurements must be maintained for three years.039.06NEGATIVE PRESSURE ROOMS. A licensee must only administer radioactive gases in rooms that are at negative pressure compared to surrounding rooms.039.07TIME AFTER RELEASE CALCULATION. Before receiving, using, or storing a radioactive gas, the licensee must calculate the amount of time needed after a release to reduce the concentration in the area of use to the occupational limit listed in 180 NAC 4, Appendix 4-B. The calculation must be: (A) Based on the highest activity of gas handled in a single container, the air volume of the room, and the measured available air exhaust rate;(B) Posted at the area of use and require that, in the case of a gas spill, individuals evacuate the room until the posted time has elapsed; and(C) Recorded and retained for the duration of the license.180 Neb. Admin. Code, ch. 7, § 039
Amended effective 11/3/2020Amended effective 6/14/2023