Nuclear Security Regulations

15.1 A physical protection system shall include a physical protection measure that, in the event of the loss of power, maintains an uninterrupted power supply for a period sufficient to allow for an alternate continuous power supply to be implemented for

• (a) all devices required by this Part related to intrusion detection and the immediate assessment of the cause of an alarm, other than lighting as required by paragraph 10(2)(b); and

• (b) the devices referred to in paragraph 15(2)(c).