ASTM E261-15

1.1This practice describes procedures for the determination of neutron fluence rate, fluence, and energy spectra from the radioactivity that is induced in a detector specimen.

1.2The practice is directed toward the determination of these quantities in connection with radiation effects on materials.

1.3For application of these techniques to reactor vessel surveillance, see also Test Methods E1005.

1.4This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.