scope:

This standard shall apply to Class A and Class B ovens, dryers, or furnaces. The terms ovens, dryers, and furnaces shall be used interchangeably. Where chapters or specific paragraphs in this standard apply only to Class A or B ovens, they are so noted.

Within the scope of this standard, an oven shall be any heated enclosure operating at approximately atmospheric pressure and used for commercial and industrial processing of materials.

A Class A oven also shall be permitted to utilize a low-oxygen atmosphere.

This standard also shall apply to bakery ovens in all respects, and reference is made to those sections of ANSI Z50.1, Bakery Equipment - Safety Requirements, that shall apply to bakery oven construction and safety.

This standard shall not apply to the following:

(1) Coal or other solid fuel-firing systems

(b) Listed equipment with a heating system(s) that supplies a total input not exceeding 150,000 Btu/hr (44 kW). (See definition of Listed.)

(t)Purpose. Because the heat processing of materials can involve a serious fire and explosion hazard that can endanger the furnace and the building in which the process is located and possibly the lives of employees, adequate safeguards shall be provided as appropriate for the location, equipment, and operation of such furnaces.