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General. Every fume or flammable compressed gas building shall be without any basement, except such a basement as is permitted for a hazardous chemical storage building.
Fume Hazard Gases. Type IA, IB, IC, II, IIIA, IIIB or IIIC construction shall be used for any building in which any fume hazard gas is manufactured, compressed or stored; provided, however, that a building may be of any type of construction permissible respectively for an industrial unit or a storage unit under the provisions of this Code, where any gas is permitted to be stored or used on the premises. Every such building of Type IIIA, IIIB or IIIC construction should be not more than one story above grade in height and shall have no mezzanine unless such building is equipped throughout with a standard system of automatic sprinklers.
Flammable Compressed Gases. Type IA, IB or IC construction shall be used for any building in which any flammable compressed gas is manufactured, compressed or stored; provided, however, that a building may be of any type of construction permissible respectively for an industrial unit or a storage unit under Chapter 13-48, where any such gas is permitted to be stored or used on the premises.
Refrigerating Systems. Any mechanical refrigerating system built in accordance with the provisions of Chapter 13-192 shall be exempt from the provisions of this section.
Natural and/or Manufacturing Gas Holders. It shall be unlawful to take out of service any gas holders containing flammable compressed gases, or to make any connections thereto within the city without first notifying the building commissioner 24 hours in advance, and without first emptying and purging such gas holders of all explosive gases, and without first making a physical disconnection of all connecting piping, taking out sections thereof to make such disconnections. Before making such repairs, the contents of the gas holders shall be tested and the analysis of the mixture of air or inert gases therein shall be recorded and reported to the building commissioner. Every such gas holder or tank containing more than 2,500 cubic feet of gas shall be inspected at least once every five years by a recognized authority employed by the owner and approved by the building commissioner, and a report of all such inspections showing the condition of said gas holder or tank, together with a statement of necessary repairs and the further statement that such repairs have been made and that said gas holder or tank is in a good and safe condition with an expectancy that this condition will endure for the succeeding term of five years, shall be submitted to the building commissioner. A noncorrosive metal tag containing the date of every such inspection and approval shall be attached to each such gas holder following every such inspection. The provisions of this paragraph shall not apply to cylinders or containers meeting the requirements of the Interstate Commerce Commission regulations for interstate shipments.
(Coun. J. 12-9-92, p. 25465; Amend Coun. J. 2-7-96, p. 15616)
Notes
| 13-192 | The hyper-linked material is not part of the Chicago Building Code infobase and therefore is not included herein. The material is included in other provisions of the Chicago Municipal Code. The complete Chicago Municipal Code is available for purchase from American Legal Publishing in both print and Folio® versions. Please click here for the appropriate American Legal order form in printable Adobe® PDF format. For additional information, you may visit American Legal's website by clicking here. |
(a) General. Every fume or flammable compressed gas room in a building of Type IA, IB or IC construction shall have an enclosure of two-hour fire- resistive construction, except as otherwise provided under this section. Every such room in a building of other than Type IA, IB or IC construction shall be enclosed by not less than one-hour fire-resistive construction; provided, however, that the requirements of subsections (b) and (c) of this section shall prevail where inconsistent with this subsection.
(b) Water-Purifying Equipment. No corrosive, explosive, flammable, irritant, poisonous, toxic or other noxious gas in a quantity exceeding ten pounds, whether in a container, cylinder, piping or other water-purifying equipment, shall be permitted in any assembly unit. All containers, cylinders, piping or other equipment containing more than ten pounds of such gases named in this section in any other building, shall be located within a room or space having a four-hour fire-resistive enclosure. Any such room shall have no opening except to an open court, private alley, public way or other open space not less than 100 feet in area. Nothing in the provisions of this section shall be construed as prohibiting the location of such equipment in the same room with a furnace, boiler or other heat-producing unit or incinerator, if such room is made to comply with the provisions of this section.
(c) Cooling and Refrigerating Equipment. Any room or space used for cooling or refrigerating equipment shall conform to the requirements of Chapter 13-192 for refrigerating systems.
(Coun. J. 12-9-92, p. 25465; Amend Coun. J. 2-7-96, p. 15616)
No person shall manufacture or compress any fume or flammable compressed gas, as defined in Section 15-26-020, nor store more than 2,500 cubic feet of any such gas in any building other than a fume or flammable compressed gas building constructed in accordance with this Code.
(Coun. J. 12-9-92, p. 25465; Amend Coun. J. 2-7-96, p. 15616)
Every building hereafter designed, erected, altered or converted for the purpose of manufacturing or storing for resale any fume or flammable compressed gas in a quantity exceeding 2,500 cubic feet during any 24-hour period shall be freestanding and isolated by a safety clearance of not less than 250 feet. Every building hereafter designed, erected, altered or converted for the purpose of manufacturing, compressing or storing acetylene gas at a pressure of more than 15 pounds per square inch shall be freestanding and isolated by a safety clearance of not less than 250 feet.
Any building or group of buildings used for the purpose of the production, distribution or storage of any fume or flammable compressed gas shall be exempt from the provisions of the preceding paragraph with respect to any other building or structure within the same group and used for similar purposes. Any public utility engaged in the production, distribution or storage of illuminating gas shall also be exempt from the provisions of the preceding paragraph, except as prohibited or otherwise regulated in other provisions of this Code. Nothing in this section shall be construed as prohibiting the storage for use on the premises of acetylene gas in cylinders in a quantity of 2,500 cubic feet or less or the generation of any such gas for use on the premises in a quantity of 2,500 cubic feet or less at a pressure of 15 pounds or less per square inch, or the use of any number of cylinders of any such gas which is in actual use or attached ready for use in any industrial process. Any mechanical refrigerating system built in accordance with Chapter 13-192 shall be exempt from the provisions of this section.
(Coun. J. 12-9-92, p. 25465; Amend Coun. J. 2-7-96, p. 15616)
Notes
| 13-192 | The hyper-linked material is not part of the Chicago Building Code infobase and therefore is not included herein. The material is included in other provisions of the Chicago Municipal Code. The complete Chicago Municipal Code is available for purchase from American Legal Publishing in both print and Folio® versions. Please click here for the appropriate American Legal order form in printable Adobe® PDF format. For additional information, you may visit American Legal's website by clicking here. |
Fume or Flammable Compressed Gas Buildings. Every fume or flammable compressed gas building shall have a floor area limited by the provisions of Chapter 13-48 for industrial units.
Fume or Flammable Compressed Gas Rooms. No fume or flammable compressed gas room shall have a floor area of more than 600 square feet; provided, however, that this requirement shall not apply to a room used for no purpose other than the operation of a water purification plant or refrigerating unit. Two sides, or two ends, or one side and one end of every fume or flammable compressed gas room shall be enclosed by an outside wall. Not more than two fume or flammable compressed gas rooms shall be permitted in any building; provided, however, that in a building equipped throughout with a standard system of automatic sprinklers not more than six such rooms shall be permitted.
Manufactured Gas Building. Any building used exclusively for the production, distribution or storage of manufactured gas as public utility shall be exempt from the provisions of this section.
(Coun. J. 12-9-92, p. 25465; Amend Coun. J. 2-7-96, p. 15616)
Every fume or flammable compressed gas room shall have means of natural ventilation as required under Section 15-28-260 for material heating rooms. The combined area of ventilating openings with closures arranged to open automatically in case of explosion or fire shall be not less than five percent of the total wall area.
(Coun. J. 12-9-92, p. 25465; Amend Coun. J. 2-7-96, p. 15616)
Every fume or flammable compressed gas building and every fume or flammable compressed gas room shall have the words “DANGER – POISONOUS GAS” where any fume hazard gas occurs, or the words “DANGER – FLAMMABLE GAS” where any flammable compressed gas occurs, painted in a conspicuous position on the outside of every entrance thereto; provided, however, that no such sign shall be required for any building or room in which not more than two standard cylinders of such gas are present at any time. No-smoking signs shall also be provided wherever flammable compressed gas is stored.
Such wording shall be in plainly legible bright red letters on a white background with letters not less than six inches high and with the principal strokes thereof not less than three-fourths inch in width.
(Coun. J. 12-9-92, p. 25465; Amend Coun. J. 2-7-96, p. 15616)
The storage or handling of fume hazard gases shall comply with the following requirements:
(1) Containers having a pressure of 15 psi or less or a quantity less than 2,500 feet may be stored in suitably ventilated cabinets located outside of the main building, adequately protected from extreme heat and accumulations of snow and ice; if within a building they shall be in rooms complying with the preceding sections. No combustible material shall be allowed in such rooms or within ten feet of an outside cabinet. Quantities in excess of the above limits shall not be allowed in any building other than a fume hazard building complying with the requirements of this chapter.
(2) Signs having a white field with red letters four inches high and having a stroke of one-half inch shall be conspicuously posted. Such signs shall read “TOXIC GAS – HANDLE WITH CARE”.
(3) 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.
(Coun. J. 12-9-92, p. 25465; Amend Coun. J. 2-7-96, p. 15616)
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