As used in this chapter, the following terms shall have the meanings
indicated:
DRY CLEANING
The process of removing dirt, grease, paints and other stains from
wearing apparel, textiles, fabrics, rugs, etc., by the use of nonaqueous,
liquid solvents, flammable or nonflammable, and it shall include the process
of dyeing clothes or other fabrics or textiles in a solution of dye colors
and nonaqueous liquid solvents.
RATED
As applied to solvents, classified as to fire hazards in accordance
with the Underwriters' Laboratories, Inc., standard of classification.
Dry-cleaning systems shall be classified as follows:
A. Class I systems shall be those utilizing solvents rated
above forty (40), including fifty degrees Fahrenheit (50º F.) flash point
naphtha.
B. Class II systems shall be those utilizing solvents rated
forty (40) or below but which do not comply with Class III or Class IV requirements,
including stoddard solvent.
C. Class III systems shall be those employing equipment
listed by Underwriters' Laboratories, Inc., utilizing solvents having specified
characteristics and rated at twenty-five (25) or below, including forty degrees
Fahrenheit (40º F.) flash point solvent.
D. Class IV systems shall be those utilizing solvents rated
as nonflammable or as nonflammable at ordinary temperatures and only moderately
flammable at higher temperatures, rated not over five (5), including carbon
tetrachloride and perchloroethylene.
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 (1) hour
with openings protected by approved fire doors, except that such separation
shall not be required for operations incidental to or in connection with the
dry-cleaning business, such as laundering, scouring, scrubbing, drying, pressing
or ironing, and the requirements for such separation may be waived at the
discretion of the Chief of the Fire Department based upon a consideration
of such factors as type of building construction, nature of occupancy, storage
and operating capacity of the system and extent of private fire protection
provided.
Class IV systems shall be subject to the requirement for a permit in §
35-11 but shall be exempt from all other provisions of this Article.