A device made in such a form (i.e., an outer casing containing a radioactive material within) that accidental dispersion of the contents is extremely unlikely; also called a closed source
A radioactive source specifically manufactured, obtained, or retained for the purpose of utilizing the emitted radiation. The sealed radioactive source consists of a known quantity of radioactive material contained within a sealed capsule, sealed between layers of non-radioactive material, or firmly fixed to a non-radioactive surface by electroplating or other means intended to prevent leakage or escape of the radioactive material. Any special nuclear material that is encased in a capsule rod, element, etc. designed to prevent leakage or escape of the special nuclear material and that prevents removal of the special nuclear material without penetrating the casing. Any by-product material that is encased in a capsule designed to prevent leakage or escape of the by-product material. Synonym: sealed radioactive source.
a radioactive material that is either permanently sealed in a capsule or closely bonded and in a solid form
a source of radioactive material that is permanently bonded or fixed in a capsule or matrix
Any byproduct material that is encased in a capsule designed to prevent leakage or escape of the byproduct material.
A radioactive source sealed in a container or having a bonded cover, the container or cover being strong enough to prevent contact with and dispersion of the radioactive material under the conditions of use and wear for which it is designed.
A radioactive source, sealed in an impervious container that has sufficient mechanical strength to prevent contact with and dispersion of the radioactive material under the conditions of use and wear for which it was designed. Generally used for radiography or radiation therapy. May be classified "Special Form" on shipping papers and packages.
is radioactive material that is permanently bonded or fixed in a capsule or matrix designed to prevent release and dispersal of the radioactive material under the most severe conditions which are likely to be encountered in normal use and handling.
Any radioactive material that is encased in and is to be used in a container in a manner intended to prevent leakage of the radioactive material.