UFC 3-600-01
17 April 2003
with change 16 January 2004
6-26.1.5
Compact inactive coal piles, regardless of height to prevent
spontaneous heating.
6-26.2
Handling. Provide the following where combustible conveyor belts
are used to transport coal:
6-26.2.1
An automatic sprinkler system. Hydraulically design the system to
operate 10 automatic sprinklers and 2 hand-held hose lines (e.g., two 35-mm (1-
1/2-in) hose lines). Sprinkler spacing should be 9.3 m2 (100 ft2) per sprinkler.
The system must be designed using a pressure of 70 kPa (10 psi) on the end
sprinkler. Water supply should be adequate for at least one-hour duration.
Interlock systems with the belt drive to shut down on sprinkler water flow. In a
conveyor enclosure less than 4.6 m (15 ft) wide, install a single line of sprinklers.
6-26.2.2
Provide either 35-mm (1-1/2-in) hose lines or hydrants at suitable
intervals such that the entire belt is accessible for fire fighting.
6-26.2.3
Provide each conveyor belt system with tamperproof devices
arranged to automatically shut off driving power in the event of greater than 20
percent belt slow down or misalignment of belts. Use interlocking devices to shut
off power to contributing conveyors.
6-26.3
Pulverizing Equipment. In a pulverized fuel system, use
components designed and constructed in accordance with requirements of NFPA
8503, Pulverized Fuel Systems.
6-27
POWER GENERATING AND UTILIZATION EQUIPMENT. In
general, conform electrical installations NFPA 70, National Electrical Code.
Specific details on the hazards of internal combustion engines, gas turbines,
generators, and transformers are covered in the NFPA Fire Protection Handbook
and the FM Global Data Sheets.
6-27.1
Stationary Combustion Engines, Gas Turbines, and
following the requirements of NFPA 37, Installation and Use of Stationary
Combustion Engines and Gas Turbines, except as modified by this UFC.
6-27.1.1
automatic sprinkler protection, enclose these units with 2-hour fire resistive
construction or protect locally with automatic sprinklers. Automatic sprinklers
connected to domestic water supplies are acceptable in accordance with NFPA
13.
6-27.1.2
Units 18.65 MW (25,000 Horsepower) and Larger). In buildings
without automatic sprinkler protection, enclose with 2-hour fire resistive
construction and protect locally with automatic sprinklers. Automatic sprinklers
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