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MIL-HDBK-1013/10
Section 2: FENCES
Application.
Requirements for security fencing generally fall
2.1
into three categories:
General security and loss prevention.
a)
Category I and II conventional arms, ammunition, and
b)
explosives (AA&E). (Security fencing will not be provided for Category III
and IV AA&E storage facilities unless it is determined necessary based on an
assessment of local threats, vulnerabilities, and cost-effectiveness.)
Nuclear weapons.
c)
General design requirements for these security categories are
contained in associated OPNAVINSTs. OPNAVINST 5530.14B provides requirements
for general physical security and loss prevention, OPNAVINST 5530.13A provides
special requirements for the protection of conventional AA&E, and OPNAVINST
C8126.1 and NAVFACINST 11012.134A cover special requirements for nuclear
weapons.
Related Criteria. The perimeter boundaries of all Navy and Marine
2.2
Corps installations or separate activities will be either fenced or walled,
and posted to establish a legal boundary. This defines the perimeter,
provides a buffer zone, facilitates control, and makes accidental intrusion
unlikely. It is important that consultation be made with local authorities to
ensure that posting of barriers in areas of concurrent or proprietary
jurisdiction complies with local or state trespass laws.
Establish a protective perimeter around all designated restricted
areas. The protective perimeter will be a chain-link fence, taut-wire fence,
the exterior walls of a structure, or a combination thereof. OPNAVINSTs state
that when walls are used as a barrier, they will provide penetration
resistance equivalent to, or greater than, the fence. In general, even
security fences provide only seconds of penetration resistance. Stud and girt
walls are the least penetration resistant of normal wall construction and will
provide at least 1 minute of penetration resistance against a low threat level
attack using limited hand tools. Therefore, most structure walls will provide
equivalent or greater penetration resistance to fences.
Determine the type of barrier to be used after a study of local
conditions and applicable directives. The barrier or combination of barriers
used must afford equal and continuous protection along the entire perimeter of
the restricted area. When a section of natural or structural barriers (or
lack thereof) provide a lesser degree of protection, other supplementary means
to detect and assess intrusion attempts must be provided or a waiver or
exception requested.
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