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USACE / NAVFAC / AFCESA
UFGS-13094N (December 2001)
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Preparing Activity: NAVFAC
Superseding
UFGS-13094N (August 2001)
UNIFIED FACILITIES GUIDE SPECIFICATIONS
References are in agreement with UMRL dated 23 June 2005
Latest change indicated by CHG tags
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SECTION 13094N
RADIO FREQUENCY SHIELDED ENCLOSURES, WELDED TYPE
12/01
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NOTE: This guide specification covers the
requirements for radio frequency shielded
enclosures, welded type in sizes under 50 square
meters 500 square feet.
Comments and suggestions on this guide specification
are welcome and should be directed to the technical
proponent of the specification. A listing of
technical proponents, including their organization
designation and telephone number, is on the Internet.
Recommended changes to a UFGS should be submitted as
a Criteria Change Request (CCR).
Use of electronic communication is encouraged.
Brackets are used in the text to indicate designer
choices or locations where text must be supplied by
the designer.
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NOTE: For larger enclosures and for High Altitude
Electromagnetic Pulse (HEMP) protected enclosures,
contact NAVFAC Engineering Innovation and Criteria
Office (Code EICO) before beginning design. The
electrical designer should refer to MIL-HDBK-419
Volumes I and II for special grounding and bonding
requirements for EMC enclosures and to NACSIM 5203
for TEMPEST enclosures. All metallic electrical
conduits which penetrate a TEMPEST shield must be
isolated within 50 mm 2 inches of the exterior of
the shield by a nonmetallic conduit section at least
150 mm six inches long to prevent conduction of
information from the shielded enclosure. Although
not addressed in this specification, it is
recognized that fiber optic cable has gained
acceptance as an effective method of transmitting
data across the boundary of shielded enclosures
SECTION 13094N
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