SEM-SAFE® high-pressure water mist system for fire safety

  • Overview

The SEM-SAFE® high-pressure water mist system is a unique fire fighting system. By forcing water at a high-pressure through nozzles, an extremely fine mist is created.

Water is supplied via a pump unit. The SEM-SAFE® high-pressure pump unit can supply all water mist applications. This is beneficial because you only need one unit for all applications, and it is easy to add more sections and applications, if needed. In addition, servicing of only one unit is easier and less costly.

 

1. SEM-SAFE® water mist system with closed nozzles

On stand-by, the system maintains a pipe pressure of approx. 12 bar. When the temperature exceeds e.g. 57 °C, the heat-sensitive glass bulbs mounted in the nozzle heads melt. At this point, the high-pressure pump is automatically activated and water is forced through nozzles at high-pressure (60 or 100 bar depending on nozzle type) to create a fine mist. Only nozzles with melted bulbs are activated. This means that only the heat-affected area will be actively sprayed.

2. SEM-SAFE® water mist system with open nozzles

On stand-by, the system has dry piping. This system will activate manually or when sensors have detected heat, smoke or a flame, depending on type and application. The nozzles are grouped in sections and all the nozzles in the activated section will be released.

3. SEM-SAFE® water mist system in operation

During operation, the high-pressure pump draws water from the tank on unit (a non-pressurised stainless steel tank) and forces it through a non-return valve to a high-pressure manifold. From here, it is distributed to the relevant section(s) via the section valve. A pressure relief valve controls the pump pressure and is designed to return the full pump capacity to the tank on unit.

 

Features and benefits

Quick fire fighting

  • As water mist both cools the fire and removes the oxygen, it results in quicker fire fighting
  • Due to the cooling effect of water mist, re-ignition is avoided
  • The SEM-SAFE® water mist system is ready for re-use immediately after a fire

Less damage

  • Water damage is kept at a minimum due to the low water consumption of the high pressure water mist system
  • The SEM-SAFE® system can be deployed instantly, resulting in less damage
  • Using only pure water, the SEM-SAFE® water mist system gives you the best possible protection of equipment and human lives

Reduced down time

  • The reduced amount of damage often means less down time, resulting in much lower costs
  • There is no need to fill up cylinders, thus saving expensive refilling time and overall costs