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VESDA is an Early Warning Aspirating Smoke Detection (ASD) System capable of detecting very low levels of smoke at a very early stage (a.k.a. incipient stage) of a fire. With a successful global history of over 25 years, VESDA has been widely accepted in various mission critical industries and bears approvals from worldwide fire regulatory institutions.
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How VESDA works
Reference List
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7 REASONS FOR VESDA
1. When business continuity is paramount
Is uptime a key business goal? Is service provision critical?
VESDA very early warning smoke detectors provide the earliest warning
of a potential fire. This buys time to investigate and intervene, potentially
avoiding the damage, downtime and cost of suppression release.
2. When smoke is difficult to detect
Is high airflow diluting smoke, preventing it reaching the ceiling, making
it difficult to detect? Is the smoke being trapped in ducts, pockets or voids?
Is smoke stratifying into a mushroom cloud below a high ceiling, making it
difficult to detect?
VESDA sampling points can be placed at the return air grille, or in
equipment cabinets, detecting the smoke as it is carried by the airflow.
In a large open space, sampling points for VESDA detectors can be placed
where the smoke goes—often some distance below ceiling level.
3. When maintenance access is difficult
Is the area to be protected inaccessible? Does maintenance on current fire
protection systems cause disruptions and inconvenience to your business?
VESDA detectors can be mounted in accessible locations, allowing easy
access for maintenance. Only the sampling pipe network is placed in the
inaccessible area.
4. When unobtrusive detection is required
Is it important to preserve the internal design/decoration of the building?
Is vandalism a problem with the current smoke detection system?
A VESDA system can be installed that uses tiny capillary sampling tubes,
barely discernible to the human eye. The detectors can be placed in a
cupboard or utility area.
5. When evacuation is a challenge
Will the building be open to the general public? Will it house people
who need extra help during an evacuation? Is evacuation difficult due to
crowds or limited exits? What is the business impact of an evacuation?
The very early warning that a VESDA system provides allows the
maximum time for evacuation.
6. When environmental conditions are difficult
Is poor air quality or extreme temperature present in the area to be
protected? VESDA detectors feature dual-stage filtration to ensure that
they keep working in dirty environments. The detectors can be installed
elsewhere, with only the sampling pipes in the extreme environment.
The sampled air can be filtered, warmed or cooled before reaching
the detector.
7. When suppression systems are present
Is suppression release a costly and disruptive exercise?
The very early warning provided by a VESDA system allows early
intervention, with action being taken before suppression is necessary.
The multiple warning levels of a VESDA system can be used to trigger
different responses at different stages of a fire, from controlling air
conditioning to suppression release.
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