To Mitigate The Lnt Model's Unintended Consequences-A Proposed Stopping Point For As Low As Reasonably Achievable

Area of Science:

• Radiation protection
• Risk assessment
• Public health

Background:

• The linear no-threshold model (LNT) is debated for its application at low radiation doses.
• The as low as reasonably achievable (ALARA) principle is applied, but its effectiveness at very low doses is questioned.
• Current negligible individual dose (NID) is 0.01 mSv/year, established in 1993.

Purpose of the Study:

• To propose a revised stopping point for the ALARA principle.
• To address the unintended consequences of applying ALARA at very low radiation doses.
• To improve public communication regarding radiation risks.

Main Methods:

• Review of current radiation protection standards and principles.
• Analysis of the practical implications of applying ALARA at low doses.
• Proposal for an updated NID value.

Main Results:

• Applying ALARA at doses comparable to background radiation does not enhance safety.
• Current practices lead to significant financial and social costs.
• There is a consensus among radiation safety professionals regarding the ineffectiveness of ALARA at very low doses.

Conclusions:

• The negligible individual dose (NID) should be increased to 0.1 mSv/year as a practical ALARA stopping point.
• Radiation protection efforts should not focus on doses similar to natural background radiation variations.
• Further research on low-dose effects is needed, but current knowledge supports this revised approach.