Energy. Part20:Standards for protection against radiation. Subpart H:Respiratory Protection and Controls To Restrict Internal Exposure in Restricted Areas. Section20.1705:Application for use of higher assigned protection factors.
The licensee shall obtain authorization from the Commission before usingassigned protection factors in excess of those specified in Appendix A to part 20. The Commission may authorize a licensee to use higher assigned protection factors on receipt of an application that—