Analysis and evaluation for consumer goods containing NORM in Korea

Area of Science:

• Radiological Science
• Environmental Health

Background:

• Consumer goods can contain naturally occurring radioactive material (NORM).
• Assessing the external radiation dose from NORM in consumer products is crucial for public safety.

Purpose of the Study:

• To analyze consumer goods for NORM content.
• To evaluate the external radiation dose from these goods.
• To determine the necessity of activity concentration limits for screening.

Main Methods:

• Inductively Coupled Plasma Mass Spectrometry (ICP-MS) was used to analyze NORM.
• The MCNPX code was employed to calculate specific effective dose rates.
• A small room model simulated the irradiation scenario for dose evaluation.

Main Results:

• External doses for twenty analyzed consumer goods were below 1 mSv.
• Some consumer goods exhibited relatively high dose rates.
• The study identified a need for activity concentration limits.

Conclusions:

• While most consumer goods analyzed had acceptable external doses, some pose a higher risk.
• Activity concentration limits are recommended as a screening tool to manage NORM in consumer products.