[Code of Federal Regulations] [Title 10, Volume 4] [Revised as of January 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 10CFR1016.23] [Page 785-786] TITLE 10--ENERGY CHAPTER X--DEPARTMENT OF ENERGY (GENERAL PROVISIONS) PART 1016_SAFEGUARDING OF RESTRICTED DATA--Table of Contents Sec. 1016.23 Establishment of security areas. (a) When, because of their nature or size, it is impracticable to safeguard documents and material containing Restricted Data in accordance with the provisions of Sec. Sec. 1016.21 and 1016.22, a security area to protect such documents and material shall be established. (b) The following controls shall apply to security areas: [[Page 786]] (1) Security areas shall be separated from adjacent areas by a physical barrier designed to prevent entrance into such areas, and access to the Restricted Data within the areas, by unauthorized individuals. (2) During working hours, admittance shall be controlled by an appropriately cleared individual posted at each unlocked entrance. (3) During nonworking hours, admittance shall be controlled by protective personnel on patrol, with protective personnel posted at unlocked entrances, or by such intrusion alarm system as DOE may approve. (4) Each individual authorized to enter a security area shall be issued a distinctive badge or pass when the number of employees assigned to the area exceeds thirty.