Standard approved, comments requested

摘要

The following standard has been approved:ANSI/ANS-8.6-1983 (R2010), Safety in Conducting Subcritical Neutron Multiplication Measurements in Situ (reaffirmation of ANSI/ANS-8.6-1983). This standard provides safety guidance for conducting subcritical neutron-multiplication measurements where physical protection of personnel against the consequences of a criticality accident is not provided. The objectives of in situ measurements are either to confirm an adequate safety margin or to improve an estimate of such a margin. The first objective may constitute a test of the criticality safety of a design that is based on calculations. The second may effect improved operating conditions by reducing the uncertainty of safety margins and providing guidance to new designs.