Xtralis’ VESDA VLS aspirating smoke detectors will provide fire prevention at the new Abu Dhabi International Airport Midfield Terminal Building (MTB), which is scheduled to open next year. The MTB will be the largest in the Emirate of Abu Dhabi, and one of the region’s most architecturally impressive structures.
Xtralis’ VESDA and VESDA-E aspirating smoke detectors (ASDs) now protect many of the United Arab Emirates’ super structures, including the Burj Khalifa, the Emirates Palace Hotel and both Dubai and Abu Dhabi International Airports.
The new Midfield Terminal Complex (MTC) will boast 700,000 square metres of internal space for a passenger terminal (ie the MTB), a cargo facility, a restaurant and retail space.
The size of the MTC is so impressive that it will be visible from 1.5 km away. The facility can accommodate 8,500 passengers per hour and up to 30 million per year. The central space of the terminal building could hold three full-sized football pitches and features a ceiling that’s 52 metres tall at its highest point. This is taller than the Emirates Palace and will include 28,000 square metres of retail outlets and restaurants.
Chief among the challenges around protecting the MTB is the massive open space where smoke will be diluted, an effect compounded by air conditioning systems. VESDA’s early and reliable detection combined with the VLS capability of monitoring the protected space by sectors were key factors that resulted in the selection of the Xtralis solution.
Additionally, temperatures in the terminal could range from hot to cold, depending on the weather. VESDA is the only detector that could ensure early and reliable detection under these conditions.
The VESDA LaserScanner (VLS) is similar to the VESDA LaserPlus (VLP) detector, but also includes a valve mechanism in the inlet manifold and software to control the airflow from the four sectors (pipes). This configuration enables a single zone to be divided into four separate sectors, for example, distinguishing between separate voids within a room.
The VLS draws air from all sectors in use. If the smoke level reaches the Adaptive Scan Threshold, the VLS performs a Fast Scan of each pipe to identify which pipe is carrying smoke. If more than one pipe is transporting smoke, the sector with the highest smoke concentration is scanned first.
Once Fast Scan is completed and the sector with the highest smoke concentration is identified, the VLS continues to closely monitor all four sectors (pipes) to keep a check on fire growth and maintain full protection of the area.
There are four alarm levels (Alert, Action, Fire 1 and Fire 2) for each sector (pipe). The sensitivity for each alarm level can be set to ensure the optimum alarm thresholds are applied for each sector.