[Code of Federal Regulations] [Title 10, Volume 1] [Revised as of January 1, 2001] From the U.S. Government Printing Office via GPO Access [CITE: 10CFR36.37] [Page 592] TITLE 10--ENERGY CHAPTER I--NUCLEAR REGULATORY COMMISSION PART 36--LICENSES AND RADIATION SAFETY REQUIREMENTS FOR IRRADIATORS--Table of Contents Subpart C--Design and Performance Requirements for Irradiators Sec. 36.37 Power failures. (a) If electrical power at a panoramic irradiator is lost for longer than 10 seconds, the sources must automatically return to the shielded position. (b) The lock on the door of the radiation room of a panoramic irradiator may not be deactivated by a power failure. (c) During a power failure, the area of any irradiator where sources are located may be entered only when using an operable and calibrated radiation survey meter.