Kidde Fire Protection 400 Series, Design, Installation, Operation, And Maintenance Manual

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System Design
06-237518-001 3-3 July 2018
3-2.1 Requirements for a Cylinder Storage Room
For cylinder storage, weight and space considerations are normally the main concern. In most
cases these considerations could be negligible as the cylinders are commonly kept inside a
separate protected room. However, a number of issues need further
consideration
including:
• Never install cylinders in an atmosphere containing ammonium or severe weather condi-
tions.
• When cylinders are all connected to a common manifold, they shall contain the same Agent,
be the same size, and filled to the same pressure.
• Always store cylinders in a location and manner where they are not likely to be knocked
over.
• Always secure the cylinders against a solid structure.
• Always allow for sufficient free space for ease of inspection, service, and maintenance.
• Ensure easy access to manual actuation on the release unit.
When planning the storage area, check the following:
•
Ambient storage temperature (see below)
• Humidity of surrounding air (“relative humidity”)
• Vibrations and shock
• Closed manifold and pipe sections involved
• Pressure relief vents to atmosphere/largest protected volume
• Cylinder storage room natural or equipped with extract ventilation
• Room large enough for storage
• Room height sufficient for cylinder bank assembly and distribution pipe connection
• Allowance for proper access to cylinders during installation and service/maintenance
• Floor capable of carrying the load. For floor loads, see Section 3-13).
• Wall/structure strong enough for mounting wall brackets supports
• Storage room not to be used for other purposes, which could result in fire exposure, me-
chanical damage or chemical damage to cylinders
• The access route to and from the cylinder storage area to be confirmed suitable for unhin-
dered movement of cylinders.
• It is recommended that cylinder storage room doors open outward, preferably to open air,
with facilities to enable the doors to be secured in the open position.
3-2.2 Extended Discharge
In systems protecting enclosures that have non-closable openings or where the ventilation
system cannot be stopped, use extended discharge. The rate of the Agent’s extended
discharge shall be equal to that which escapes through openings and or ventilating systems.
The rate required shall be based on a door fan test and the flammable materials involved. An
extended discharge shall continue for the hold time required by the authorities having
jurisdiction. As the rate normally will be different from that required for the initial discharge a
secondary distribution piping and arrangement shall be installed.
Extended discharge is usually not required in a normal, relatively tight enclosure (such as EDP-
rooms) which has a ventilation system that stops upon fire detection.