UFC 4-022-01
25 May 2005
conservative since some systems will operate with a clear height of 15 feet
(4.57 m) and could be installed under a canopy.
Consider provisions for automated inspection equipment to be installed prior to
the main inspection area. It is often desirable to complete any automated
inspection such as UVSS or imaging prior to arriving at the main, covered
inspection area for identification and further inspection tasks. Therefore these
functions should precede the final inspection area. Most inspection systems
are designed to be outside and do not require shelter from the weather.
Site all permanent facilities or guard posts such that they would remain outside
of the exclusion zone. A shielding wall may be required if there are occupied
buildings or areas near the detector.
Site all permanent facilities such that they are not in the direction of travel of the
transmission beam unless the distance between the inspection vehicle and the
facility is at least 300 ft (90m.) The intent is to insure that the 100 mR / year
radiation dose limit is not exceeded for personnel who may be in the direction
of travel of the radiation. This distance can be reduced if a shielding wall
meeting manufacturer's guidance is provided between the radiation source and
any facility of concern.
Provide channelization islands a minimum of 5 ft (1.5 m) wide to support the
future installation of a portal inspection system.
Paragraph 7-4 provides layout design recommendations intended to provide flexibility
for the future inclusion of these systems.
7-4
LAYOUT
The layout of the large vehicle inspection facility is extremely important to ensure the
facility will function properly. The civil design should consider the turning radius and
other operating characteristics of the expected vehicle types. In addition, the facility
should have multiple lanes of inspection to support different vehicle types, or varying
inspection levels. The design should have adequate stacking distances for the
anticipated queue and parking for vehicles to be inspected and security vehicles. Size
parking areas for the range of expected vehicles and consider the anticipated volume of
vehicles to be inspected.
Consider providing a "sally port" in the inspection area. A "sally port" configuration is
created through the use of vehicle barricades or traffic gates. These barriers are
intended to confine the vehicle during inspection until it is determined that the vehicle is
authorized to proceed or if the vehicle is denied admission to the installation. The
barriers can also be used to aid in positioning the vehicle relative to inspection
equipment.
Some installations may require screening of the inspection operations from the
remaining portions of the ECF. Screening may increase safety and shields the
inspection procedures from public view to prevent visual surveillance from unauthorized
personnel. As discussed in section 7-3, the inspection equipment can have a significant
impact on the layout of a truck inspection facility. It is difficult to develop a layout that
can support all potential types of automated inspection equipment. If the installation
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