Sec. 193.2913 Security monitoring. Each protective enclosure and the area around each
facility listed in Sec. 193.2905(a) must be monitored for the presence of unauthorized
persons. Monitoring must be by visual observation in accordance with the schedule in the
security procedures under Sec. 193.2903(a) or by security warning systems that continuously
transmit data to an attended location. At an LNG plant with less than 40,000 m
3 (250,000
bbl) of storage capacity, only the protective enclosure must be monitored.
Sec. 193.2915 Alternative power sources. An alternative source of power that meets the
requirements of Sec. 193.2445 must be provided for security lighting and security
monitoring and warning systems required under Secs. 193.2911 and 193.2913.
Sec. 193.2917 Warning signs.
(1) Warning signs must be conspicuously placed along each protective enclosure at
intervals so that at least one sign is recognizable at night from a distance of 30 m
(100 ft) from any way that could reasonably be used to approach the enclosure.
(2) Signs must be marked with at least the following on a background of sharply
contrasting color:
The words “NO TRESPASSING,” or words of comparable meaning.