15-28-440 Tank storage.

   Tanks, which contain more than 55 gallons of corrosive liquids, shall be located outside of any building or buried below ground level. When aboveground, said tank or tanks containing liquids, shall be diked. Each dike shall have a capacity of not less than one and one-half times the combined capacity of the tank or tanks it surrounds. Dike construction shall be as specified in Section 15-24-170 of this Code; provided, however, the materials of the dike walls shall be inert with respect to the materials contained within the tank or tanks.

(Prior code §  92-37.1)

15-28-450 Tank construction materials.

   The provisions of this section shall apply to all existing as well as newly installed tanks. All tanks, piping and fittings shall be compatible with the material to be stored or handled. Outlets and inlets of all aboveground tanks shall have a shutoff valve as close as possible to the tank, with no branches or outlets between the tank and valve. All inlet pipes shall have an additional check valve as close as possible to the tank valve. In addition to any other valves when the material stored is reactive with air or water there shall be a valve at each pipeline connection to any tank below the liquid level which valves shall be effective inside the tank shell or head and can be operated manually to prevent the flow of liquid from the tank even though the pipelines are broken from the tank. All remote reach rods to valves shall be of substantial construction and shall be accessibly located and clearly marked “Emergency Shutoff Valve”. There shall be an effective flexible connection between that tank valve and piping system or the piping shall be so arranged with swing joints to prevent stress and strain between the piping system and tank. Where the exterior piping and sides of the tank are not inert to the material being stored, the piping, piping supports and tank shall be made inert by coating or some other means to one and one-half times the height of the dike.

(Prior code §  92-37.2)

15-28-460 Safety clearances.

   Tanks or tank cars of corrosive liquids of any capacity shall not be located within one-eighth mile from any school, institutional unit, multiple dwelling or place of public assembly.

(Prior code §  92-37.3)

15-28-470 Emergency requirements.

   Whenever a corrosive liquid can be chemically changed to a less dangerous and more stable material, a qualified chemist of the manufacturer shall state in writing the safest and quickest method of changing the total capacity of the tank or tanks in case of a rupture, spillage or other emergency. The owner and/or operator of said tank or tanks shall keep sufficient quantities of the changing agent as hereinbefore determined so as to be readily available in the event of an emergency.

(Prior code §  92-37.4)

15-28-480 Breathing apparatus required.

   The name and address of the manufacturer or the nearest producer of the specific corrosive liquid being used and a placard outlining emergency first aid directions shall be posted and remain posted in a conspicuous place at the points of unloading and use and in at least one other approved location.

   Oxygen-generating or self-contained air or oxygen masks having a United States Bureau of Mines or National Institute of Occupational Safety and Health approval for a minimum of one-half hour protection shall be maintained in a readily accessible location, outside the areas of probable contamination and sufficient for all personnel associated with the operation.

   Additional air or oxygen containers which will provide for a minimum of one-hour use of each mask shall be kept at the location of each gas mask. All personnel that may be required to use gas masks must be required at reasonable intervals to practice their application and use. Gas masks must be kept in condition, ready for immediate use at all times with fully charged containers.

   An approved repair kit with all the necessary tools, appurtenances and material required to repair a leak or replace a defective valve or other part, shall be kept in a location accessible to the tank car and outside the probable area of contamination.

   Protective clothing suitable for use with the materials stored shall be provided and be kept in good condition where its use will provide effective protection against the corrosive liquid.

   Gas masks, repair kit and duplicate wrenches shall be kept in a conspicuous location and shall be conspicuously labeled for immediate identification.

(Prior code §  92-37.5)

ARTICLE XI. RADIOACTIVE MATERIALS (15-28-490 et seq.)