Dry cleaning systems shall be classified as follows: (1) Class I Systems shall be those utilizing solvents rated above 40. (Example—50 degree F. Flashpoint Naphtha.) (2) Class II Systems shall be those utilizing solvents rated 40 or below, but which do not comply with Class III or Class IV requirements. (Example—Standard Solvent.) (3) Class III […]
(a) No person shall engage in the business of dry cleaning without a permit which shall prescribe the location and the class of system to be used. (b) No change shall be made in the solvent used in the equipment to a solvent in a more hazardous (lower) class unless permission for such change has […]
Class I systems shall conform to nationally recognized standard practice as specified in section 609 of this title.
(a) Class II systems shall be located in buildings having walls of masonry or noncombustible construction and wall finish shall be plain or plastered without furring or concealed spaces. Floors shall be of fire-resistive construction and without pits, wells or pockets; and where located over a basement, floor shall be vapor- and liquid-tight. Roof and […]
Class III systems, if located in the same building with other occupancies, shall be separated from the remainder of the building vertically and horizontally by construction having a fire-resistance rating of not less than one hour with openings protected by approved fire doors, except that such separation shall not be required for operations incidental to […]
Class IV systems shall be subject to the requirement for permit in section 683 of this title, but shall be exempt from all other provisions of this subchapter.
Rooms in which articles are hung up to dry after cleaning shall be separated from dry cleaning rooms by partitions having a fire-resistance rating of not less than two hours if Class II system solvents are used, and not less than one hour if Class III system solvents are used. Entrances to dry rooms shall […]
(a) Where Class II systems are used, heating shall be by steam or hot water only. Steam and hot water pipes and radiators for heating and drying purposes shall be at least one inch from all woodwork and shall be protected by substantial metal screens arranged so as to prevent combustible goods or materials from […]
(a) Where Class II systems are used all electrical equipment in dry cleaning rooms or other sections subject to flammable vapors shall be of a type approved for Class I, Division 1 hazardous locations, except that electrical equipment located 8 feet or more above the floor may be of the type approved for Class I, […]
A mechanical system of ventilation shall be provided in the dry cleaning rooms of plants employing Class II systems, of sufficient capacity to insure complete and continuous change of air once every 6 minutes, and shall be provided with means of remote control.
(a) Aboveground containers comprising purifiers, clarifiers, and filters, in Class II systems shall not exceed 350 gallons individual capacity. Solvent storage tanks or Class II and Class III systems may be inside of buildings if individual capacity of tanks does not exceed 275 gallons and the aggregate capacity of storage tanks does not exceed 550 […]
The cylinders and shells of all washing machines, drying tumblers, outside shell of extractors and all aboveground containers shall be permanently and effectively grounded. In plants employing Class II systems, all pulleys and belting in the dry cleaning room shall have grounded collectors or other suitable devices for the removal of static electricity.
(a) The brushing (prespotting) table shall have a liquid-tight top with a curb on all sides not less than 1 inch high. The top of the table shall be pitched so as to insure thorough draining to a 1 ½-inch drain connected to a suitable container especially provided and marked for that purpose. (b) All […]
Adequate first aid fire appliances of a type suitable for fighting fires involving flammable liquids shall be provided in all dry cleaning plants; at least one extinguisher shall be provided at each entrance to every room or area where flammable liquids are stored or used.
Smoking in plants employing Class II or Class III systems, except in smoking rooms so designated, shall be strictly prohibited and “No Smoking” signs shall be posted.
