34 Pa. Code § 23.81

Current through Register Vol. 55, No. 1, January 4, 2025

Section 23.81 - Classification

Buildings enumerated in sections 4-8 of the Dry Cleaning and Dyeing Law (35 P. S. §§ 1269.4-1269.8) shall be classified as follows:

(1)Class I. The buildings in this class use class I solvent which is a flammable petroleum solvent having the following properties:

Flash point (closed cup tester)

Lower than 100 °F.

(2)Class II. The buildings in this class use class II solvent which is a flammable petroleum solvent having the following properties:

Flash point (closed cup tester)	Lower than 138.2° F. but higher than 99° F.
Initial boiling point	Lower than 357.8° F. but higher than 300° F.
Ignition temperature	Lower than 453.2° F. but higher than 400° F.
Power limit of explosive range	Not less than 1.1% by volume of air.
Spontaneous heating	The solvent shall not heat spontaneously.

(3)Class III. The buildings in this class use class III solvent which is a flammable petroleum solvent having the following properties:

Flash point (closed cup tester)	Not lower than 138.2° F.
Initial boiling point	Not lower than 357.8° F.
Ignition temperature	Not lower than 453.2° F.
Power limit of explosive range	Not less than 0.8% by volume in air at an initial temperature of 302° F.
Spontaneous heating	The solvent shall not heat spontaneously.

(4)Class IV. The buildings in this class use Class IV solvent which is a commercially nonaqueous liquid solvent that is volatile but does not contain flash point ingredients and which is neither a Class I, Class II nor a Class III solvent.

34 Pa. Code § 23.81