Quantcast Section 6: Physical Security

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Section 6:
General.  Physical security is concerned with limiting,
controlling, or preventing personnel access to specific areas.  A sound
physical security program is the result of good planning. The best and most
economical programs are those incorporated in the facility's design and
construction.  The facility's configuration and location; the use of barriers,
protective lighting, particular kinds of construction, intrusion detection
alarms, closed circuit television (CCTV), and security fencing; and the guard
communication network must be coordinated with the using agency to ensure
conformance with the installation's security plan.  The mode of operation,
level of security, and designer's responsibility for particular security
elements will be designated in the BESEP.
Exterior Physical Security. External security requirements in most
cases depend on the internal security measures provided in the facility design
and on the type of protection required.  Normally, external considerations,
including building location and orientation and the use of protective barriers
and lighting, are developed as part of the facility's security plan and
specified in the BESEP.  DIAM 50-3, Physical Security Standards for Sensitive
Compartmented Information Facilities, and MIL-HDBK-1013/1 should be the
primary criteria sources for design of the required facilities.
Perimeter Fencing. Generally, chain-link fencing is used for
permanent areas. General-purpose barbed tape obstacle and concertina wire are
used for temporary installations or where the terrain does not allow
construction of chain-link fencing.  Dual perimeter barriers are described in
DIAM 50-3.  Alternative fence configurations are discussed in MIL-HDBK-1013/1.
The following requirements are the minimum for normal protection:
a) Unless otherwise specified, the perimeter security fence shall
be at least 50 feet (15.24 m) from enclosed structures (except guard
shelters).  A clear zone not less than 20 feet (6.1 m) wide shall be provided
immediately outside the fence.  This area shall be devoid of buildings,
parking areas, poles, guy line anchors, shrubs, trees, sign boards, and any
other object that could conceal personnel.  Grass is permissible, provided it
is kept mowed.  A similar clear zone at least 50 feet (15.24 m) wide shall be
provided immediately inside the fence.  This area shall meet the requirements
of the exterior clear zone, except that approved guard shelters and protective
lighting poles may be installed.
b) Chain-link fencing shall conform to the latest issue of Federal
Specification RR-F-191, Fencing, Wire (Chain-Link Fabric).  The fence fabric
shall be 6 feet (1.83 m) high, unless other requirements are provided by the
sponsor. The fence shall be topped by a 45-degree outrigger that is 15 to 18
inches (381 to 457.2 mm) long.  Three evenly spaced strands of barbed wire
shall be attached to the outriggers.  All fence fabric and barbed wire strands
shall be grounded.
c) Utility openings, covers, sewers, culverts, tunnels, and other
subsurface routes which penetrate the fence line shall be protected in
accordance with DIAM 50-3.


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