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Updated: Jul 19, 2026

Laser-heating and Radiance Spectrometry for the Study of Nuclear Materials in Conditions Simulating a Nuclear Power Plant Accident

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Determining optimal protective actions for nuclear incidents.

S E Merwin¹, R F Darwin

¹Pacific Northwest Laboratory, Richland, WA 99352.

|September 1, 1991

Summary

The U.S. Environmental Protection Agency

Area of Science:

Environmental science
Radiation protection
Public health

Background:

The U.S. Environmental Protection Agency (EPA) is updating its Protective Action Guides (PAGs).
PAGs recommend dose levels for public protection during nuclear accidents.
PAG appropriateness hinges on balancing avoided health risks against action costs and impacts.

Purpose of the Study:

Evaluate current PAG recommendations against the radiation protection optimization principle.
Determine if PAGs adequately balance costs and benefits of protective actions.
Assess the necessity of separate PAGs for specific organs.

Main Methods:

Analysis based on recent radiation risk estimates.
Derivation of the monetary value of risk reduction.

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Evaluation of protective actions using the optimization principle.

Main Results:

Evacuation is cost-effective if it reduces collective dose by at least 1 person-Sievert (Sv) per $34,000-$250,000 in costs.
Decision-making for evacuation should integrate dose avoidance and site-specific costs.
Separate PAGs for thyroid and skin are not needed for stochastic effects due to the effective dose equivalent concept.

Conclusions:

PAGs should prioritize cost-benefit analysis for protective actions like evacuation.
The effective dose equivalent simplifies radiation protection, negating the need for organ-specific PAGs for stochastic effects.
Organ-specific PAGs should focus solely on preventing significant nonstochastic effects.