The Fundementals of Smoke Control
Andover Controls Corporation 1-23
TOC
Detecting Smoke
The fire control system is the system that is connected to the smoke and
fire detectors. Every smoke zone should have a Listed smoke and fire
detector installed in it. The detectors should be located so that they will
detect the presence of smoke or fire before it spreads beyond the zone.
Once the fire control system detects the fire, it relays to the smoke
control system the zone and the type of alarm that was triggered. The
smoke control system then takes action.
Never use manual pull stations to start the smoke control system. There
is no guarantee that the person pulling the alarm is in the same smoke
zone as the fire. The automatic smoke control system should take only
those actions that are common to all smoke strategies when a manual
pull station is activated. For example, the stairwell can be pressurized in
response to a manual pull box alarm. Implementing a specific smoke
control strategy must wait until the smoke detectors locate the fire zone.
Configuring and Monitoring a Smoke Control
System
The smoke control system should be able to act on its own in response
to detecting smoke. When it detects smoke, the system enacts the
strategy you planned out (as discussed in the design section of this
article). The automatic smoke control should stick with the strategy to
control smoke in the first zone that smoke is detected in. It would be
difficult for you to create strategies for controlling smoke in all possible
combination of zones.
The automatic smoke control system must have the highest priority over
all other automatic control systems in the building. It must override
energy management, occupancy schedules, or other controls. The
smoke emergency will probably last only several hours, so the impact
on energy management should be minimal. The only systems that
should be able to automatically override the smoke control system are
such safety systems as high pressure limiters.
Considering how unpredictable smoke is, you must have a manual
control panel from which the smoke control system can be monitored
and overridden. This panel, called a Firefighter’s Smoke Control Station
(FSCS), allows firefighting personnel to take manual control of the
smoke control system.
Technical Manuals Online! - http://www.tech-man.com
To Next Page
Loading...
Need help?
General
