Hazardous material exposure

DOE-STD-3014-96

APPENDIX A

Since the precedent has already been established in an existing DOE

standard, it is reasonable to take 25 times the DOE-STD-1027-92 Hazard

Category 2 thresholds as limiting inventories, above which there would be

potential injuries to workers at a distance of 300 m (984 ft) in the

above-specified weather conditions.

Hazardous material exposure - Emergency Response Planning Guideline

Level 3 (ERPG-3) as established by the AIHA, to the maximally exposed

individual beyond 300 m (984 ft) from the facility.

Basis: The ERPG-3 is "The maximum airborne concentration below

which it is believed that nearly all individuals could be exposed for up to

1 hour without experiencing or developing life threatening health effects."

In spirit, the ERPG-3 seems to be closer to the IDLH than does the

ERPG-2, so it is reasonable to choose it as a guideline for the impact on

workers.

Hazardous material exposure where ERPG-3 has not been established -

the IDLH, as established by the NIOSH, to the maximally exposed

individual beyond 300 m (984 ft) from the facility.

Basis: As noted above, the IDLH is "The maximum concentration of a

substance in air from which healthy male workers can escape without

loss of life or irreversible health effects under conditions of a maximum

30-minute exposure time." Thus, the IDLH has been specifically defined

with worker protection in mind.

The analyst is warned against creating more work than is necessary by

pursuing evaluation against the onsite screening guidelines when the

circumstances do not warrant it. As discussed above, these guidelines

are provided to address specific, unique cases in which special

consideration of worker exposure resulting from aircraft crash would

provide meaningful additional insights. The default position is that the

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