Washington Administrative Code › Title 296 - Labor and Industries, Department of › Chapter 296-835 - Dipping and coating operations (dip tanks) › Section 296-835-099 - Definitions

Current through Register Vol. 24-14, July 15, 2024
ACGIH.
American Conference of
				Governmental Industrial Hygienists.
Adjacent area.
Any area within twenty
				feet (6.1 m) of a vapor area that is not separated from the vapor
				area by tight partitions.
ANSI.
American National Standards
				Institute.
Approved.
Approved or listed by a
				nationally recognized testing laboratory. Refer to federal regulation
				29 C.F.R.
				1910.7, for definition of
				nationally recognized testing laboratory.
Autoignition temperature.
The minimum
				temperature required to cause self-sustained combustion without any
				other source of heat.
Detearing.
A process for removing excess
				wet coating material from the bottom edge of a dipped or coated
				object or material by passing it through an electrostatic
				field.
Dip tank.
A container holding a liquid
				other than plain water that is used for dipping or coating. An object
				may be immersed (or partially immersed) in a dip tank or it may be
				suspended in a vapor coming from the tank.
Flammable liquid.
Any liquid having a
				flashpoint at or below 199.4°F (93°C). Flammable liquids are
				divided into four categories as follows:
(a) Category 1 shall include liquids having
				flashpoints below 73.4°F (23°C) and having a boiling point at
				or below 95°F (35°C).
(b) Category 2 shall include liquids having
				flashpoints below 73.4°F (23°C) and having a boiling point
				above 95°F (35°C).
(c) Category 3 shall include liquids having
				flashpoints at or above 73.4°F (23°C) and at or below
				140°F (60°C). When a Category 3 liquid with a flashpoint at
				or above 100°F (37.8°C) is heated for use to within 30°F
				(16.7°C) of its flashpoint, it shall be handled in accordance
				with the requirements for a Category 3 liquid with a flashpoint below
				100°F (37.8°C).
(d) Category 4 shall include liquids having
				flashpoints above 140°F (60°C) and at or below 199.4°F
				(93°C). When a Category 4 flammable liquid is heated for use to
				within 30°F (16.7°C) of its flashpoint, it shall be handled
				in accordance with the requirements for a Category 3 liquid with a
				flashpoint at or above 100°F (37.8°C).
(e) When liquid with a flashpoint greater than
				199.4°F (93°C) is heated for use to within 30°F
				(16.7°C) of its flashpoint, it shall be handled in accordance
				with the requirements for a Category 4 flammable liquid.
Flashpoint.
The minimum temperature at
				which a liquid gives off a vapor within a test vessel in sufficient
				concentration to form an ignitable mixture with air near the surface
				of the liquid, and shall be determined as follows:
(a) The flashpoint of liquids having a viscosity less
				than 45 Saybolt universal second(s) at 100°F (37.8°C) and a
				flashpoint below 175°F (79.4°C) shall be determined in
				accordance with the Standard Method of Test for Flashpoint by the Tag
				Closed Tester, ASTM D-56-69 (incorporated by reference; WAC
				296-901-14024, Appendix
				B-Physical hazard criteria).
(b) The flashpoints of liquids having a viscosity of
				45 Saybolt universal second(s) or more at 175°F (79.4°C) or
				higher shall be determined in accordance with the Standard Method of
				Test for Flashpoint by the Pensky Martens Closed Tester, ASTM D-93-69
				(incorporated by reference; WAC
				296-901-14024, Appendix
				B-Physical hazard criteria).
Lower flammable limit.
The lowest
				concentration of a material that will propagate a flame. The LFL is
				usually expressed as a percent by volume of the material in air (or
				other oxidant).
NFPA.
National Fire Protection
				Association.
Vapor area.
Any area in the vicinity of
				dip tanks, their drain boards or associated drying, conveying, or
				other equipment where the vapor concentration could exceed
				twenty-five percent of the lower flammable limit (LFL) for the liquid
				in the tank.
You.
The employer. See the definition of
				employer in the safety and health core rules, WAC
				296-800-370.