Oregon Administrative Rules › Chapter 437 - DEPARTMENT OF CONSUMER AND BUSINESS SERVICES, OREGON OCCUPATIONAL SAFETY AND HEALTH DIVISION › Division 2 - GENERAL OCCUPATIONAL SAFETY AND HEALTH RULES › Section 437-002-2040 - Exposure Assessment

Current through Register Vol. 63, No. 7, July 1, 2024
This rule requires an evaluation of employee exposure to
				beryllium using air monitoring or objective data as described in the
				performance or scheduled monitoring options.
(1) Assess the exposure of each employee who
			 is or may reasonably be expected to be exposed to beryllium in accordance with
			 either the performance option in paragraph (2) or the scheduled monitoring
			 option in paragraph (3).
(2)
			 Performance option. Assess the 8-hour TWA exposure and 15-minute short-term
			 exposure for each employee on the basis of any combination of air monitoring
			 data or objective data sufficient to accurately characterize employee exposures
			 to beryllium.
(3) Scheduled
			 monitoring option.
(a) Perform initial
			 monitoring to assess the 8-hour TWA exposure for each employee on the basis of
			 one or more personal breathing zone air samples that reflect the exposures of
			 employees on each shift, for each job classification, in each work area.
(b) Perform initial monitoring to
			 assess the short-term exposure from 15-minute personal breathing zone air
			 samples measured in operations that are likely to produce airborne exposure
			 above the STEL for each work shift, for each job classification, and in each
			 work area.
(c) Where several
			 employees perform the same tasks on the same shift and in the same work area,
			 you may sample a representative fraction of these employees in order to meet
			 this requirement. In representative sampling, sample the employee(s) who are
			 expected to have the highest exposure to beryllium.
(d) If initial monitoring indicates that
			 employee exposures are below the action level and at or below the STEL, you may
			 discontinue monitoring for those employees whose exposures are represented by
			 such monitoring.
(e) Where the most
			 recent exposure monitoring indicates that employee exposures are at or above
			 the action level but at or below the PEL, repeat such monitoring within six
			 months of the most recent monitoring.
(f) Where the most recent exposure monitoring
			 indicates that employee exposures are above the PEL, repeat such monitoring
			 within three months of the most recent monitoring.
(g) Where the most recent (non-initial)
			 exposure monitoring indicates that employee exposures are below the action
			 level, repeat such monitoring within six months of the most recent monitoring
			 until two consecutive measurements, taken 7 or more days apart, are below the
			 action level, at which time you may discontinue monitoring for those employees
			 whose exposures are represented by such monitoring, except as otherwise
			 provided in paragraph (4).
(h)
			 Where the most recent exposure monitoring indicates that airborne exposure is
			 above the STEL, repeat such monitoring within three months of the most recent
			 short-term exposure monitoring until two consecutive measurements, taken 7 or
			 more days apart, are below the STEL, at which time you may discontinue
			 short-term exposure monitoring for those employees whose exposure is
			 represented by such monitoring, except as otherwise provided in paragraph (4).