air sampling smoke Detection
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VESDA by Xtralis very early warning smoke detection solutions provide the earliest possible warning of an impending fire hazard. VESDA buys time to investigate an alarm and initiate an appropriate response to prevent injury, property damage or business disruption. And because VESDA has the industry’s widest sensitivity range and multi-level warnings, even minute levels of smoke can be detected before a fire has time to escalate.
As the No. 1 ASD brand specified by fire professionals around the world, VESDA is synonymous with reliable, high-performance fire detection.
Hospitals, rehabilitation clinics, aged- and palliative-care residential facilities, along with other medical treatment centers, present multiple challenges in the management of fire hazards and evacuation. Diagnostic and testing facilities – such as MRI centers, radiology rooms, and pathology laboratories – typically combine high-energy high-cost technology with hazardous chemical, radioactive or biological material. Major healthcare infrastructure also includes non-medical but potentially fire-prone areas such as shops, cafeterias, commercial kitchens, maintenance facilities and so on.
In short, the complex nature of the varying environments found within healthcare facilities demand fire detection systems capable of coping with a wide range of threats and nuisance alarm sources by offering design flexibility for different environments while providing guaranteed reliable protection throughout operational life. It should also provide unobtrusive maintenance that will not disrupt operations or for spaces with restrictive access through centralized maintenance.
Critically, a fire detection system in a healthcare facility must be able to provide warnings early enough to allow local control and mitigation. The number one priority has to be early detection, verification and mitigation of threats avoiding the need for the evacuating of large numbers of ill, incapacitated and highly vulnerable patients
The Challenge – MRI (magnetic resonance imaging) facilities do not permit the installation of fire detection which contains metallic (ferromagnetic) components.
The Solution – VESDA VLF has been packaged with various MRI OEM as part of the solution as it can remotely protect high cost equipment and provide early warning of potential fire hazard due to the use of plastic or aspirating tubes or pipes.
The early warning capability of a VESDA system will ensure fire is detected at the earliest possible stage for swift MRI system shutdown before the fire escalates to a point where quench is initiated which can result in several days downtime and extremely expensive to re-initiate operation.
VESDA works by continuously drawing air into a distributed pipe network via a high-efficiency aspirator. The air sample then passes through a dual-stage filter. The first stage removes dust and dirt from the air sample before it enters the laser detection chamber. The second, ultra-fine stage provides an additional clean-air supply to keep the detector’s optical surfaces free from contamination, ensuring stable calibration and long detector life as well as minimizing nuisance alarms.
From the filter, the air sample goes through the calibrated detection chamber where it is exposed to a laser light source. When smoke is present, light is scattered within the detection chamber and is instantly identified by the highly sensitive receiver system. The signal is then processed and presented via a bar-graph display, alarm threshold indicators and/or graphic display. VESDA detectors are able to communicate this information to a fire alarm control panel, a software management system, or a building management system via relays or a High Level Interface (HLI).
- Aircraft hangars
- Control rooms
- Data centers
- Document and archive storage
- Electrical equipment
- Flammable liquid/chemical storage
- Generator rooms
- Loading racks
- Marine vessels
- Medical diagnostic rooms
- Offshore platforms
- Paint spray booths
- Turbine generators
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