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 MIL-HDBK-1008B
communication cables installed in ceiling spaces and under raised floors shall
be plenum rated or installed in conduit in accordance with NFPA 70. Use of
nonmetallic conduit is not permitted. If plenum rated cable or conduit cannot
be provided, an extinguishing system shall be provided in the under floor or
ceiling area.
4.9
Ordnance
4.9.1
Ordnance Facilities. Ordnance facilities used for handling,
processing, servicing, and inspection of ammunition, explosives, propellants
and oxidizers or related devices containing these materials shall have
complete automatic sprinkler protection and comply with DOD Instruction
6055.9-STD, DOD Ammunition and Explosive Safety Standard. Requirements for
UBC Group H occupancies shall be followed in the absence of specific guidance
in DoD Instruction 6055.9-STD and the individual service regulations based
directly on DoD Instruction 6055.9-STD. The service regulations include:
1. For Navy projects, NAVSEA OP-5, Ammunition and Explosives
Ashore.
2. For Army projects, Army AR 385-64, U.S Army Explosives
Safety Program and the Army Material Command Regulation 385-
100, Safety Manual.
3. For Air Force projects, Air Force AFM 127-100, Explosives
Safety Standard.
4.9.1.1 Sprinkler Protection. Automatic sprinkler systems in ordnance
facilities shall be provided with flexible couplings and sway bracing similar
to that provided for buildings in earthquake zones. Complete automatic
sprinkler protection is required for ordnance facilities used for production,
handling, processing, servicing, and inspection of ammunition, explosives,
propellants, and oxidizers or related devices containing these materials,
unless such a system will aggravate the hazard. The following guidelines for
automatic sprinkler protection shall apply:
a) Where exposed thermally energetic materials are handled that
have a high probability of ignition, a large thermal output and a high
probability of causing personnel injury, operations shall be protected using
ultra-high speed deluge systems. Ultra-high speed deluge systems have a
response time of 0.2 seconds or less. Response time is measured from the time
that an energy source is presented to the detector to the time of initial
water flows on the hazard from the critical nozzle, which is normally the
nozzle closest to the hazard. Ultra-high speed detectors usually consist of
preprimed deluge systems and optical flame detection which views the hazard.
Piping is pitched 1/4-inch per 10 feet with air bleeders at the high point.
Pipe runs and bends are kept to a minimum.
b)
Provide high-speed (operation of 0.5 seconds or less),
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