Lastly, this method protects the guard by keeping him in comparative
darkness.
Glare projection is not appropriate where security troop
emplacement may be silhouetted or illuminated for the enemy (See Figure 2-5).
(2) Controlled lighting adjusts and controls the width of the lighted
strip to fit the particular need. A wide strip inside the fence and a narrow
strip outside may be needed because of adjoining highways, air ports, etc.
(See Figure 2-6.)
The floodlighting of a storage tank or roof is another
example. This method has the disadvantage of illuminating security posts and
b. Standby lighting (stationary).
This is similar to continuous
lighting.
However, the lights are turned on, either automatically or
manually.
They are turned on when suspicious activity is detected by
security or alarm system. Or they may be used when there is a need for added
security.
c. Movable lighting (stationary). This consists of manually operated,
movable searchlights.
Such lighting is normally used to supplement all the
other systems, such as standby. These units may be installed on patrol and
reaction vehicles. They may also be placed in towers and at strategic points
on the perimeter.
d. Emergency lighting.
Such lighting duplicates any or all the above
systems.
It is used when power failure or other emergencies shut down the
primary systems.
Emergency lighting requires an alternate power source.
Portable generators and batteries are examples.
e. Dual lighting.
Active entrances should have two or more lighting
units.
There should be enough illumination for recognition of persons and
examination of credentials.
Semiactive and inactive entrances should have
the same continuous lighting as the rest of the perimeter.
Also, there
should be sufficient standby lighting to be used when entrance becomes
active.
f. Pier/dock lighting.
Piers and docks should have both water
approaches and the pier illuminated. Small wattage floodlights may be used
under piers and around pilings. The US Coast Guard should be consulted for
approval of proposed lighting near navigational waters.
g. Other lighting.
Vital structures and areas should be considered
first in planning protective fencing and lighting.
Power, heat, water and
communications need attention.
So do explosive and critical materials.
Delicate machinery and areas where highly classified material is stored or
produced need special attention.
So do valuable finished products.
Vital
structures of areas which are classified vulnerable from a distance should be
kept dark. Standby lighting should be available. Those areas which can be
damaged close at hand should be well lighted. The surroundings would be well
lighted.
This forces an intruder to cross a lighted area.
Walls (if a
building) should be lighted to a height of 8 feet.
This eases silhouette
vision.
2-13
MP1001
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