ASTM D3803 Standard Test Method for Nuclear-Grade Activated Carbon

EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of ASTM D3803 testing. This test method is a very stringent procedure for determining the capacity of new and used activated carbon to remove radio-labeled methyl iodide from air and gas streams.

The only test method described is for application to both new and used carbon and should yield test results comparable to those obtained from similar tests required and performed worldwide. The conditions used were chosen based on the approximate operating or accident conditions of a nuclear reactor that would seriously reduce the performance of activated carbons.

Increasing the temperature at which this test is performed generally increases the carbon removal efficiency by increasing the rate of chemical and physical absorption and isotopic exchange, that is, by increasing the kinetics of the radioiodine removal mechanisms. Reducing the relative humidity of the test generally increases the efficiency of methyl iodide removal by activated carbon.

Water vapor competes with methyl iodide for adsorption sites on carbon, and the less water vapor amount is with the lower specified relative humidity, the easier it is to adsorb methyl iodide. Therefore, this test method is a very stringent test for nuclear grade activated carbon due to the specified low temperature and high relative humidity. This test method is recommended for the qualification of new carbons and for quantifying the degradation of used carbons.

This standard does not claim to address all, if any, security concerns associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory restrictions prior to use.

EUROLAB assists manufacturers with ASTM D3803 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.