SPATIAL DISTRIBUTION ANALYSIS AND DOSE ASSESSMENT OF THE RADON EMITTED FROM THE MONAZITE-CONTAINING MATTRESS IN...

Area of Science:

• Environmental Health
• Radiological Protection
• Indoor Air Quality

Background:

• Mattresses manufactured with monazite raw materials can emit radon.
• A Korean survey revealed some radon-emitting mattresses exceed safety standards.
• Assessing residential radon exposure from consumer products is crucial.

Purpose of the Study:

• To evaluate radon distribution from emitting mattresses in residential spaces.
• To assess potential resident exposure and radiological safety.
• To compare findings with established international and national safety guidelines.

Main Methods:

• Utilized Computational Fluid Dynamics (CFD) code FLUENT for simulation.
• Analyzed residential space layouts using architectural drawings.
• Simulated radon dispersion based on ventilation and source proximity.

Main Results:

• Radon distribution patterns were analyzed in relation to ventilation and distance.
• Calculated annual resident dose was below 0.101 mSv.
• Simulated doses align with ICRP recommendations and South Korean regulations.

Conclusions:

• Radon exposure from these mattresses in typical living spaces is within safe limits.
• The study provides a quantitative assessment of radiological risk.
• Findings support the safety of consumers regarding radon exposure from these products.