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Stairwell Pressurisation Systems

HC TS is an operating company of HC PS and specialises in stairwell pressurisation systems. HC TS designs, sells and installs pressurisation systems for stairwells and emergency routes. The combination of expertise of fire safety and the products available at the HC Groep means that HC TS is a total supplier of stairwell pressurisation systems and consultation partner for fire safety issues and safe escape. Stairwell pressurisation systems merge three disciplines into one system:
The purpose of a stairwell pressurisation system is to keep emergency routes (stairwells) free of smoke by creating pressure differences between the escape route and the area where the fire is raging. This pressure difference forces the smoke to be diverted through smoke ducts, allowing people to leave the building via a smoke-free escape route.
HC TS offers safety systems that integrate modern techniques – proven in practice – and that guarantee operational reliability.
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Purpose of the system

The purpose of a stairwell pressurisation system is to keep emergency routes (stairwells) free of smoke by creating pressure differences between the escape route and the area where the fire is raging. This pressure difference forces the smoke to be diverted through smoke ducts, allowing people to leave the building via a smoke-free escape route. HC TS has found the best passive system in the market and has developed its own active system by themselves.
The stairwell pressurisation systems are designed in accordance with national and/or international regulations.

Operation of the system

Most Important
Design Criteria

The system will be turned on after a signal from the automatic fire detection system.

Technical Investigations

In case all doors are closed a pressure difference over all cracks and seams should be maintained between the stairwell and the connecting smoke compartment. An extra precondition is that the force to open a door (force on the heck) should not be higher than 100 Newton. So this means that the pressure on the door in the stairwell together with the force of the closer should not exceed 100 Newton. In general a design pressure of ca. 50 Pa can be selected.

Air Velocity Criteria

In case a door is opened on the level of the fire between the stairwell and smoke compartment, a minimum air velocity should be maintained. For evacuation purposes the design velocity varies between the 0.5 and 1.0 m/s (Depending on the applicable regulations) For repressive purposes a design velocity of 2.0 m/s is required.

Reviews

What Our Client Say

ESB have had a good working relationship with Crossflow for more than 25 years in ESB Head Office. Crossflow have conducted the preventive maintenance schedule on time, by always been proactive with any follow up actions required from PPM and responded to call outs within SLA. Crossflow have always invoiced on time with no delays.

Peter Murphy

ESB Facilities Manager
Crossflow Air conditioning has completed a large number of projects for various clients that we have been associated with over the last 20 – 25 years. At all times they have shown an appreciation for service, both in the initial construction phase and more importantly in the follow-on after sales maintenance phase.

Dean Brassington

Consultant Eng. for Allianz Worldwide Care
Thank you for the professional and efficient job Crossflow carried out for us with respect to installing the new FSAI Mitsubishi AC System. It is good to know that we now have some level of redundant cooling system within the environment.

Marc Kane

Food Safety Authority of Ireland

Any Questions?

We would be delighted to assist your query.
Contact our Technical Customer Service Team today on +353 1 427 9300 or enquiries@crossflow.ie.

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