Valuable data centre and service support to a worldwide business
Unique office block situated in the heart of Copenhagen
One of the largest water mist for fire fighting installations in Denmark’s first super-hospital
One of the top 100 universities in the world and a cultural heritage building, protected with the SEM-SAFE® high-pressure water mist system
The first land-based project in China using SEM-SAFE® high-pressure water mist technology
Custodial facilities present unique challenges and conditions that can increase the risk of fires. This may include limited escape routes, restricted access to certain areas and the potential for violence among prisoners. Effective protection measures, systems, and planning are essential to ensure the safety of staff, prisoners, and visitors as well as to safeguard the structural integrity of the buildings. In the UK, for example the Ministry of Justice (MOJ) commissioned the Building Research Establishment (BRE) to evaluate fire suppression methods for custodial facilities. The results indicate that high-pressure water mist is effective in suppressing cell fires while maintaining tenable fire conditions for both prisoners and staff during rescue operations.
The use of high-pressure water mist systems reflects a modern and effective approach to fire suppression, prioritising the safety of both prisoners and staff.
The SEM-SAFE® high-pressure water mist system consists of a pump unit, pipes, fittings, valves, nozzles and a fire hose reel cabinet. From the SEM-SAFE® pump unit, a main pipe goes to the roof, and from there, a network of pipes supplies water to each protected area in the building. In each prison cell, open nozzles are installed with an anti-ligature mounting kit, which is a dedicated safe and secure solution for prison cells. The open nozzles are activated by a fire detection system and local automatic valves, eliminating the need for manual intervention. In the event of a fire within a protected cell, the fire alarm system sends a signal to open the relevant solenoid valve.
Once the valve has opened and water begins to flow, the subsequent pressure loss prompts the pumps to start, initating the propulsion of water through the distribution pipework. Water mist is then discharged solely into the affected area. The staff can manually bypass the solenoid control valve for each cell, enabling them to start or stop water flow to the nozzles independently of the fire alarm system signal. In addition to the cell nozzles, the system protects corridors with a closed nozzle installed on the wall (sidewall installation). The associated spaces are protected by a closed nozzle installed in the ceiling (pendant installation). SEM-SAFE® water mist fire hose reel cabinets are installed on each floor with a 50-m-long flexible hose. The SEMSAFE® water mist fire hose reel cabinets are compliant with the MOJ Technical Standards. The SEM-SAFE® high-pressure water mist system can be integrated with all forms of custodial fire detection.
The most efficient in-cell water mist nozzle on the market
Larger area covered per nozzle
Cost-effective solution
Economical high-pressure pump unit
Flexibility in installation
Maintenance and reliability
Adaptability to building structures
SEM-SAFE® can be customised to the specific layout and structure of a given custodial facility. The system can be designed to provide comprehensive coverage, considering the unique challenges and requirements of the building.
In-cell water mist systems approved under Custodial Technical Standard 054
Danfoss Fire Safety has successfully passed fire tests specifically designed for fire protection in custodial facilities. The tests cover the following scenarios in prison cells:
Harry Wright, Business Development Manager – UK
harry.wright@danfoss.com | Click here to connect with Harry on LinkedIn
Harry is an experienced Business Development Manager with 7 years in the high-pressure water mist industry, specializing in custodial and government projects. With a degree in Mechanical Engineering, Harry combines technical expertise and strategic sales acumen to deliver innovative fire suppression solutions. Passionate about fostering long-term partnerships, Harry is dedicated to driving growth and safety improvements for clients.
Scan the QR code or click here to connect with Danfoss Fire Safety on LinkedIn
We are a global leader in the sale, development, production and service/commissioning of certified fixed fire fighting systems under the brand name SEM-SAFE®. Our fire fighting system are based on two key technologies: high-pressure water mist and low-pressure CO2.
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