15-28-110 Special safety clearances.

   No hazardous chemical storage building shall be located nearer than 100 feet to any building in which there is Group A, E, or I occupancy, except as otherwise provided.

(Prior code § 92-11; Amend Coun. J. 10-7-20, p. 21791, Art. VI, § 68)

15-28-120 Fire prevention requirements.

   The storage and handling of hazardous chemicals shall comply with the following requirements:

   (1)   Quantities in excess of the limits specified in Section 15-28-040 or in excess of one day's supply shall be stored or used in rooms or buildings complying with the requirements herein. Whenever one day's supply exceeds the amount specified in Section 15-28-040, a notarized letter from the user stating the amount used in one day shall be filed with the fire commissioner. Upon any change in that amount, the fire commissioner shall be notified within 24 hours.

   (2)   All shelving used in connection with the storage of such hazardous chemicals shall be of substantial noncombustible construction.

   (3)   No other combustible material or flammable liquids shall be permitted in any such room.

   (4)   Defective containers which permit leakage or spillage shall be disposed of or repaired in an approved manner. No spilled materials shall be allowed to accumulate on floors or shelves.

   (5)   Signs having a white field with red letters four inches high and a one-half-inch stroke shall be conspicuously posted. Such sign shall read "Hazardous Chemicals – Keep Fire Away".

(Prior code § 92-12; Amend Coun. J. 5-18-16, p. 24131, § 153)

15-28-130 Fire-resistive separation.

   Every hazardous chemical room, other than a vault for the storage of a hazardous chemical shall be separated from all other parts of the building by a four-hour fire separation, with no window or other opening, except a doorway or doorways between such vault and any other part of a building protected with a 3-hour-rated fire door installed in accordance with Chapter 14B-7.

(Prior code § 92-13; Amend Coun. J. 10-7-20, p. 21791, Art. VI, § 69)

15-28-140 Standard fireproof vaults.

   Every vault for the storage of hazardous chemicals shall be a dry, waterproof, standard fireproof vault. No such vault shall be located in any floor or building in which it is prohibited under Section 13-112-140.

(Prior code §  92-14; Amend Coun. J. 6-14-95, p. 2841)

15-28-150 Tank storage.

   Tanks, which contain more than 55 gallons of hazardous chemicals, 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 material of the dike walls shall be inert with respect to the materials contained within the tank or tanks.

(Prior code §  92-14.1)

15-28-160 Tank construction material.

   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 valve 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 §  92-14.2)

15-28-170 Safety clearances.

   Tankers or tank cars of hazardous chemicals of any capacity shall not be located within one-eighth mile from any building containing a Group A, E, I, or R occupancy.

(Prior code § 92-14.3; Amend Coun. J. 10-7-20, p. 21791, Art. VI, § 70)