Washington Administrative Code › Title 296 - Labor and Industries, Department of › Chapter 296-155 - Safety standards for construction work › Part B-1 - OCCUPATIONAL HEALTH AND ENVIRONMENTAL CONTROL › Section 296-155-17303 - Definitions

Current through Register Vol. 24-14, July 15, 2024
For the purpose of this standard, the following definitions
				  apply:
Action level
. A concentration of airborne MDA of
				  5 ppb as an 8-hour time-weighted average.
Authorized person
. Any person specifically
				  authorized by the employer whose duties require the person to enter a regulated
				  area, or any person entering such an area as a designated representative of
				  employees for the purpose of exercising the right to observe monitoring and
				  measuring procedures under WAC
				  296-155-17333, or any other
				  person authorized by the act or regulations issued under the act.
Container
. Any barrel, bottle, can, cylinder,
				  drum, reaction vessel, storage tank, commercial packaging, or the like, but
				  does not include piping systems.
Decontamination area
. An area outside of, but as
				  near as practical to, the regulated area, consisting of an equipment storage
				  area, wash area, and clean change area, which is used for the decontamination
				  of workers, materials, and equipment contaminated with MDA.
Dermal exposure to MDA
. Occurs where employees
				  are engaged in the handling, application, or use of mixtures or materials
				  containing MDA, with any of the following nonairborne forms of MDA:
(a) Liquid, powdered, granular, or flaked mixtures containing
				  MDA in concentrations greater than 0.1% by weight or volume; and
(b) Materials other than "finished articles" containing MDA
				  in concentrations greater than 0.1% by weight or volume.
Director
. The director of the department of
				  labor and industries.
Emergency
. Any occurrence such as, but not
				  limited to, equipment failure, rupture of containers, or failure of control
				  equipment which results in an unexpected and potentially hazardous release of
				  MDA.
Employee exposure
. Exposure to MDA which would
				  occur if the employee were not using respirators or protective work clothing
				  and equipment.
Finished article containing MDA
. A manufactured
				  item:
(a) Which is formed to a specific shape or design during
				  manufacture;
(b) Which has end use function(s) dependent in whole or part
				  upon its shape or design during end use; and
(c) Where applicable, is an item which is fully cured by
				  virtue of having been subjected to the conditions (temperature, time) necessary
				  to complete the desired chemical reaction.
Historical monitoring data
. Monitoring data for
				  construction jobs that meet the following conditions:
(a) The data upon which judgments are based are
				  scientifically sound and were collected using methods that are sufficiently
				  accurate and precise;
(b) The processes and work practices that were in use when
				  the historical monitoring data were obtained are essentially the same as those
				  to be used during the job for which initial monitoring will not be
				  performed;
(c) The characteristics of the MDA-containing material being
				  handled when the historical monitoring data were obtained are the same as those
				  on the job for which initial monitoring will not be performed;
(d) Environmental conditions prevailing when the historical
				  monitoring data were obtained are the same as those on the job for which
				  initial monitoring will not be performed; and
(e) Other data relevant to the operations, materials,
				  processing, or employee exposures covered by the exception are substantially
				  similar. The data must be scientifically sound, the characteristics of the MDA
				  containing material must be similar, and the environmental conditions
				  comparable.
4,4' methylenedianiline
or
MDA
. The
				  chemical 4,4'-diaminodiphenylmethane, Chemical Abstract Service Registry Number
				  101-77-9, in the form of a vapor, liquid, or solid. The definition also
				  includes the salts of MDA.
Regulated areas
. Areas where airborne
				  concentrations of MDA exceed or can reasonably be expected to exceed, the
				  permissible exposure limits, or where "dermal exposure to MDA" can
				  occur.
STEL.
Short-term exposure limit as determined by
				  any 15-minute sample period.
Statutory Authority: Chapter 49.17 RCW. 93-04-111 (Order
					 92-15), § 296-155-17303, filed 2/3/93, effective
					 3/15/93.