For the purpose of this article, the terms used herein are defined as
follows:
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, including the process of dyeing clothes
or other fabrics or textiles in a solution of dye colors and nonaqueous solvents.
RATED
As applied to solvents, classified as to fire hazard in accordance
with the standard of classification of the Underwriters' Laboratories,
Inc.
Dry-cleaning systems shall be classified as follows:
A. Class I systems shall be those utilizing solvents rated
above 40, including 50° F. flashpoint naphtha.
B. Class II systems shall be those utilizing solvents rated
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 25 below, including 140° F. flashpoint
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, including carbon tetrachloride
and perchlorethylene.
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 or in connection with the
dry-cleaning business, such as laundering, scouring, scrubbing, drying, pressing
or ironing, and the requirement 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 §
113-2, but shall be exempt from all other provisions of this article.