Nuclear Security Regulations

10 (1) Every protected area shall be surrounded by an unobstructed area that is located outside the barrier required by section 9 and that extends at least 5 m away from every point of the barrier.

(2) The unobstructed area shall be

• (a) free of any structure, equipment or other obstruction that could be used to penetrate or surmount the barrier or to restrict observation of the unobstructed area; and

• (b) continuously illuminated at an intensity sufficient to permit clear observation of any person within the unobstructed area.