[Code of Federal Regulations] [Title 10, Volume 1] [Revised as of January 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 10CFR20.1701] [Page 337] TITLE 10--ENERGY CHAPTER I--NUCLEAR REGULATORY COMMISSION PART 20_STANDARDS FOR PROTECTION AGAINST RADIATION--Table of Contents Subpart H_Respiratory Protection and Controls to Restrict Internal Exposure in Restricted Areas Sec. 20.1701 Use of process or other engineering controls. Source: 56 FR 23400, May 21, 1991, unless otherwise noted. The licensee shall use, to the extent practical, process or other engineering controls (e.g., containment, decontamination, or ventilation) to control the concentration of radioactive material in air. [64 FR 54556, Oct. 7, 1999]