Ordinance No. 19593 - Laserfiche WebLink

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or highly volatile radioactive materials are stored, a detec- tion system shall be provided to detect the presence of air- borne radioactivity at ar below the permissible concentrations set forth in 10 CFR 20.103. Such detection equipment shall be permitted tv be maintained at a l ocati on other than the storage area, but shall be on the premises. EXCEPTION: Airborne radioactivity detection systems are not required in storage areas or buildings where storage is continually limited to materials which can be demon- strated to present na respiratory dangers. 6. Storage Conditions. A. The maximum quantity and storage arrangement of radioactive materials to be stored in buildings or rooms designed for such purposes shall be in accordance with the requirements of the Nuclear Regulatory Commission and state ar local requirements. B. Storage of contaminated combustible waste mater- ials shall be in tightly closed noncombustible containers containing no other waste. Special attention shall be given to prompt disposal of combustible wastes contaminat- ed with oxidizing materials that are subject to spontane- ous heating. fib} Exterior Storage. 1. General. Exterior storage of radioactive materials shall be in accordance with the provisions of this subsection and the general provisions specified in Section 80.301. 2. Distance from Storage to Exposures. A. Exterior storage shall not be~permitted within 20 feet of any property line, street, alley, public way or exit to a public way. An unpierced two-hour fire- resistive wall extending not less than 30" above and to the sides of the storage area may be provided in lieu of such distance. B. Exterior storage shall not be permitted within 20 feet of any building unless the building exterior walls are not less than one-hour fire-resistive construction. Storage is not permitted less than ten feet from any building opening. Building openings less than 20 feet from exterior storage shall be protected by afire assembly having athree-fourths hour fire-resistive rat- , Eng. 3. Fire Extinguishing Systems. Exterior storage of -- radioactive materials shall be in fire-resistive containers or shall comply with one of the following: A. The storage area shall be protected by an auto- matic, open head, deluge fire sprinkler system of the type and density specified in UBC Standard 38-1; or B. Storage shall be located under a canopy of non- combustible construction, with the canopied area pro- tected by an automatic fire sprinkler system. Such stor- age shall not be considered to be indoor storage. 4. Containment. Secondary containment shall be provided in accordance with the provisions of Section 80.3011}4. Ordinance - 57