scope:

This standard shall apply to processes in which articles or materials are passed through tanks, vats, containers, or process equipment that contain flammable or combustible liquids, including but not limited to dipping, roll coating, flow coating, curtain coating, and cleaning.

This standard shall also apply to dipping and coating processes that use water-borne, water-based, and water-reducible materials that contain flammable or combustible liquids or that produce combustible deposits or residues.

This standard shall not apply to dipping and coating processes that use only noncombustible liquids.

This standard shall not apply to dipping and coating processes that use a liquid that does not have a fire point when tested in accordance with ASTM D 92, Standard Test Method for Flash and Fire Points by Cleveland Open Cup, up to the boiling point of the liquid or up to a temperature at which the sample being tested shows an obvious physical change.

This standard shall not apply to electrostatic fluidized bed powder application. (See Section 15.13 of NFPA 33, Standard for Spray Application Using Flammable or Combustible Materials).

Purpose.

The purpose of this standard shall be to provide requirements for fire safety for dipping and coating processes that use flammable or combustible liquids. Given that this standard anticipates conditions of average use, the authority having jurisdiction shall be permitted to require additional safeguards or modifications to the requirements of this standard where unusual industrial processes are involved, provided equivalent safety is achieved.

The purpose of this standard shall be to address only the fire and explosion hazards of dipping and coating processes and operations. This standard shall not address toxicity or industrial hygiene.