Experts in fire protection

Advantages

HELIOS AMX5000 aspirating smoke detectors detect even minute smoldering fires and can be used almost anywhere. They actively draw air samples from the protection zone and analyze them in a measuring chamber. In addition to a pre-signal and contamination assessment, the detector also offers the possibility of adjusting the sensitivity in accordance with the unit's general use. Minimax aspirating smoke detectors are multi-functional detectors that respond to various fire characteristics through combined measuring chamber systems. Thus, fires are already detected at an early stage.

Design and function

The HELIOS AMX5000 aspirating smoke detector consists of one or two independent suction lines with suction opening and one highly sensitive smoke sensor. Each suction line is constantly monitored via an air stream monitoring system in order to identify pipe breaks and dirt at the suction opening. A high-power fan sucks air from the area or device to be monitored through the suction line to an evaluation unit. Here, the air is constantly evaluated by the smoke sensors. The display and operating fields of the evaluation unit show the smoke concentration in the aspirated air, in addition to other alarm, fault and status notifications. Any increase in the smoke concentration is identified extremely quickly. Three pre-signals and one main alarm can be programmed, which can be transferred to the Loop AP via a potential-free relay or module.

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Alarm threshold of conventional smoke detectors
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Alarm threshold HELIOS AMX5000
  1. Alarm threshold of conventional smoke detectors
  2. Alarm threshold HELIOS AMX5000

Protected areas

Archives

Protection zone

Archives house documents and information in the form of paper files or data carriers. Shelving bays or mobile storage racks make for transparent storage and as needed for quick access to specific information. The ceiling height is typically used to the limit.

Risks

  • Technical defects in devices such as the motors of electric mobile storage racks
  • Overheating of ceiling lighting
  • Highly flammable materials

Fire Protection

Sprinkler systems installed for the overall protection of the building typically provide the necessary safety in archives. The use of Preaction sprinklers prevents an unintentional triggering of the extinguishing system caused by accidental damage to a sprinkler. Oxeo inert gas extinguishing systems completely exclude water damage to archived materials. They are also an optimal solution if the distance between the upper edge of the shelves and the ceiling is too narrow for sprinklers. Oxeo extinguishing systems are triggered by a fire detection system using HELIOS AMX5000 aspirating smoke detectors.

High rack storage

Protection zone

High rack storage shelves are up to 50m high and are mostly designed for the intake of Europallets. Their capacity ranges from a few thousand to several hundred thousand pallet storage positions. On a very small surface area they offer space for extremely large quantities of goods and products. Between every two rows of storage shelves there is an alley in which rack feeders move up and down.

Risks

  • Rapid spreading of fire in a vertical direction due to stacked pallets
  • Chimney effect, i.e. flames and fire gases are drawn upward through the shafts

Fire Protection

Sprinkler systems have been proven to work well in high rack storage facilities. In the conventional version, sprinklers are installed both under the ceiling and in the shelves. However, the installation of shelf sprinklers is rendered unnecessary if ESFR (Early Suppression Fast Response) sprinklers, which are installed only in the ceiling, can be deployed. Fire detection systems for the early detection of fires are also used to supplement sprinkler systems in high rack storage facilities. In these cases, Minimax recommends the use of HELIOS AMX5000 aspirating smoke detectors with a vertical installation of the suction lines in the shelves and mounting the evaluation units in easily accessible locations. The advantage of such a solution over punctiform smoke detectors is, for example, that they can be serviced very easily without having to interrupt business operations.

Refrigerated storage

Protection zone

Refrigerated storage is widespread especially in the food industry and in the related, downstream commercial operations. The goods and products are stored for purpose at temperatures of up to -40 °C. The necessary heat insulation often consists of non-flammable or flammable insulation materials with varying fire performance, often in the form of sandwich elements. Rack storage is predominant in refrigerated storage facilities

Risks

  • Dry air promotes the rapid spread of fire
  • Additional fire loads when using flammable insulation material
  • Extinguishing water without antifreeze additives will freeze over very quickly.

Fire Protection

Oxeo Prevent fire prevention systems are the ideal solution for refrigerated storage facilities, since the conditions for their use — no permanent presence of people in the storage facility, a well-sealed building shell and very low infiltration of fresh air caused by bringing in and removing goods — are also required to maintain the desired temperature level. Moreover, they offer perfect protection for the storage of foodstuff that is sensitive to smoke and temperatures. Oxeo Prevent fire prevention systems are mostly used in combination with HELIOS AMX5000 aspirating smoke detectors with a highly sensitive setting to ensure earliest fire detection. Heated aspirating outlets ensure their proper operation in refrigerated areas. Though Oxeo Prevent can only prevent a smoldering fire from turning into an open fire, the fire and the cause of fire would remain permanently undetected in the absence of an earliest fire detection system. Alternatively, sprinkler systems can be installed in such conditions — here ideally fitted with ESFR sprinklers. If there is a sufficiently spaced, frost-free intermediate area above the ceiling available, we recommend pendent Viking ESFR dry sprinklers. Combined with a Minimax PipeGuard Antifreeze system, sprinkler systems can be used in refrigerated storage facilities at a temperature of up to -40 °C.

Server rooms

Protection zone

Server rooms are important, sensitive areas. In these rooms, data of high importance for business operations is stored, managed and exchanged over the network. The irretrievable loss of this data through a fire may have considerable economic consequences for productivity or even the future of a company.

Risks

  • Overheating of technical equipment
  • Defects such as short circuits
  • Considerable damage even in the case of small fires

Fire Protection

For small and medium-sized server rooms, the MX 1230 extinguishing system is the ideal solution. It gives residue-free extinguishing using the innovative Novec™ 1230 extinguishing agents and requires very little space. Oxeo inert gas extinguishing systems are ideal for large server rooms. The MX 1230 extinguishing system and Oxeo inert gas extinguishing systems are triggered, and fires are detected, by a fire detection system using a HELIOS AMX5000 smoke aspirating system.

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