Kidde Fire Systems Argonite, Инструкция по проектированию, установке и обслуживанию

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4-1
September 2004
Argonite
®
Engineered Fire Suppression System
38-KFSARG-000
4-1 INTRODUCTION
An Argonite
®
system may involve parts as described below.
4-2 CENTRAL CYLINDER BANK
An Argonite system normally comprises a bank of cylinders consisting of a sufficient number of
cylinders to provide the Argonite supply required. Where required, a reserve bank should consist
of as many multiples of the primary supply as the authority having jurisdiction considers necessary.
Main and reserve supplies may be permanently connected to the distribution piping and arranged
for easy change over.
The cylinder bank shall not be located where it can be rendered inoperable or unreliable due to
mechanical damage, exposure to chemicals or harsh weather conditions, or by any other
foreseeable cause. Where exposure to such conditions is unavoidable, then a suitable enclosure
or other protective measures shall be employed.
The cylinders in a bank must be securely supported and attached to a wall or a solid structure in
a manner that allows for convenient individual inspecting/servicing. Each cylinder valve must
be fitted with a pressure gauge. A supervisory pressure switch is provided for remote monitoring.
The cylinders in a bank are each connected to a discharge manifold or series of manifolds via
flexible high-pressure hoses. The connection at the manifold includes an in-line check valve.
Check valves are provided to prevent agent loss and to ensure personnel safety if the system is
operated when any containers are removed for maintenance.
It is permissible to utilize multiple storage container sizes in the cylinder bank.
4-3 SELECTOR VALVE SYSTEM/DISTRIBUTION SYSTEM
Should the system be designed for protection of more than one hazard from a common
cylinder bank, the manifold must be equipped with normally closed, pneumatically operated
selector valves.
The pressure required to operate the pneumatic actuators on the selector valves is taken from
the main distribution manifold, via a pressure regulator. The pressure regulator reduces the
operating pressure to between 75 and 120 PSI (5 to 8 bar) to safely operate the selector valves,
and shall include a relief device in case of overpressurization.
Each selector valve is equipped with its own actuator and solenoid valve assembly, which, when
operated, will release Argonite into the appropriate hazard area.
A portion of the total number of Argonite cylinders may be used for a particular hazard. This is
accomplished by utilizing a non-return (check) valve in the cylinder pilot line. The system
designer shall specify the location of the valve.
A restrictor is used at the outlet of each selector valve to reduce the pressure going into the
distribution piping.
Optional isolation (lockout) valves may be installed upstream of the selector valve. These valves
must remain supervised open and may only be closed during system service or routine maintenance.
CHAPTER 4
SYSTEM DESCRIPTION