Argotec CST (Controlled Suppression Technology) Fire

GAS EXTINGUISHING SYSTEMS
INERT GAS EXTINGUISHING SYSTEMS
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Argotec CST
(Controlled Suppression Technology)
Fire protection concepts with inert gases
PERFECT &
The advantage of gaseous extinguishing agents
such as argon or nitrogen is that firefighting is
fast, effective and totally residue-free. In order
to extinguish, they displace part of the oxygen
in the air at the source of the fire – enough to
abruptly extinguish the fire.
We go the extra mile …
for outstripping other fire protection systems
flow rate limitation unit
exhaust flap
exhaust air
filter
circulating air flap
coarse
filter
A fire-extinguishing, low-oxygen concentration
is dangerous to people. Therefore it is necessary to regulate the design, installation and
operation of these systems with norms and
other standards. These standard systems with
gaseous extinguishing agents cover most possible fields of application.
Argotec CST (Controlled Suppression Technology) with argon or nitrogen extends these
standards to new fire protection concepts for
special requirements. Technical reasons that
cause a planned fire-protection plan using gaseous extinguishing agents to fail because
the standard system available cannot cover an
existing risk, for example, are no longer a
problem.
Argotec CST fire extinguishing systems are systems designed with innovative technology
based on proven and tested components and
design methods. They can be distinguished
from standard inert gas fire extinguishing systems by the way in which controlled doses
of the corresponding extinguishing agent –
argon or nitrogen – are applied in various ways
in the protected area.
supply air
inlet air flap
air preparation
- ventilator
- pre-filter
- dryer /
moistener
- cooling /
heating
- secondary filter
pressure reducer
pressure reducer
fire detector
concentration
analysis
fire detection
and
extinguishing
control panel
manual
release
oxygen sensor
first volume
second volume
Argotec® cylinder battery
selector
valve
fire detector
oxygen sensor
CST = Controlled Suppression Technology
fire detection
and
extinguishing
control panel
production supply
SAFE
GAS EXTINGUISHING SYSTEMS
INERT GAS EXTINGUISHING SYSTEMS
in demanding situations
The 3 typical Argotec
CST fire extinguishing systems
왘 Flow rate-controlled
Argotec CST fire extinguishing system
The flow rate-controlled extinguishing
agent supply is based on dosed quantity
control, so that the extinguishing agent is
applied in predetermined quantities and
intervals in the protected room.
왘 Concentration-controlled
Argotec CST fire extinguishing system
The concentration-controlled extinguishing agent supply is based on oxygen-led
dosing of the preset volume of extinguishing agent, whereby the extinguishing
agent is applied at controlled intervals to
the protected room, dependent on the
preset level of residual oxygen.
왘 Demand-controlled
Argotec CST fire extinguishing system
The demand-controlled extinguishing agent
supply is based on effective use of an
onsite inert gas production supply, whereby
the available extinguishing agent is
constantly applied to the protected room
up to the preset residual oxygen level.
Fire protection for laboratories and clean
rooms
Medical, chemistry and biology laboratories are
generally clean rooms and are often characterised by the fact that they are operated in defined
environments, where certain parameters such
as humidity, temperature and pressure are
exactly regulated.
Precision-controlled low-pressure ventilation
thus prevents an exchange of air with the environment and avoids hazardous material from
being released into the atmosphere. For this
reason, when fire breaks out and an automatic
gas extinguishing system is activated, the
defined low pressure must be guaranteed.
The advantage of gaseous extinguishing agents
cannot be used with standard inert gas fire
extinguishing systems because these rooms are
naturally sealed off from the environment and
are as airtight as possible. Standard gas extinguishing systems require an opening to the outside in order to channel off the pressure
created by the flooding. However hazardous
materials can also escape out into the atmosphere through these pressure relief openings.
The Argotec CST flow rate-controlled fire
extinguishing system offers dosed extinguishing by limiting flow rate and no additional pressure relief is required. This makes safe and
residue-free fire protection possible even for
laboratories with low-pressure specifications.
OPERATION
day and night
Fire protection for occupied spaces where
uninterrupted operations must be guaranteed.
Standard inert gas fire extinguishing systems
apply the entire quantity of extinguishing agent
to the protected area in one interval within the
maximum admissible flooding time. The flooding process can no longer be influenced after it
has been started by a control pulse. Generally
in this situation, the initial extinguishing agent
concentration is higher and the resultant oxygen concentration is lower than is required for
safe extinguishing. Therefore personal protection and efficient use of the extinguishing
agent are not optimised.
In contrast to standard fire extinguishing systems, the demand-controlled Argotec CST
fire extinguishing system doesn’t require
a seperate extinguishing agent supply. It uses
an existing production supply of argon or
nitrogen usually at 20 to 30 bars. When fire
breaks out, a demand-controlled, constant and
uninterrupted preset concentration of extinguishing agent is built up in the protected area
and, once reached, it is maintained for a considerable length of time.
Joint use of an onsite inert gas supply for production and fire extinguishing purposes considerably reduces installation and operating costs as
well as the size of the installation space required.
Source: DFS
PB15Ce/10.08/3/10.08/HA
Minimax GmbH & Co. KG
Industriestrasse 10/12
23840 Bad Oldesloe
Germany
Phone +49 4531 803-0
Fax
+49 4531 803-248
E-mail [email protected]
www.minimax.de
No. S 89201
Printed in Germany
The Argotec CST concentration-controlled
fire extinguishing system offers controlled
application of the extinguishing agent through
constant measurement of residual oxygen. After
the first flooding interval, the extinguishing
agent is applied to the protected area in further
extinguishing intervals. Thus the extinguishing
agent concentration is applied and retained in
exact doses at the required level. In addition,
dosed application offers very long hold times of
an extinguishing concentration, enabling, for
example, uninterrupted operation of IT and EDP
systems.
Fire protection as part of an efficient
overall concept using synergies – with the
demand-controlled Argotec CST fire extinguishing system