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.
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