Smoke & Fire Curtains

As part of a smoke ventilation system, a compartment screen may be required to form part of the reservoir boundary or used to limit smoke travel from the fire source. Depending on the application (height restrictions, heating / air conditioning systems, atheists etc) different curtains may be required.

Smoke is the greatest threat to life safety in a fire situation. Image A & B indicate one of the many problems smoke can cause in large buildings. Image A shows a typical multi storey building with a central atrium. In the event of a fire at a lower level, smoke will rise and enter the upper floors. This smoke will reduce visibility and may cause occupants to be disorientated and way-finding difficult. By using Smoke Curtains with Smoke Ventilators and fresh air intake (complete SMS solution) it is possible to ensure that the unaffected floors are protected. In Image B you can see the result of installing an automatic smoke control system. The smoke detections system would activate and the Smoke Curtain system would be deployed on all floors with the exception of the floor on which the fire has been detected. In turn the roof mounted smoke ventilators would open along with the low level inlet ventilators. Smoke is restricted to the fire floor leaving the remainder of the building free from smoke allowing safe egress for the occupants.
The SMS GLASS DOWNSTAND has become an alternative system to fixed / automatic smoke curtains offering a suspended unframed clear glazed smoke screen as part of the fire protection strategy of the building. The glass screens are aesthetically pleasing and can be designed into the construction of the ceiling. The glass used in the smoke control screen is a 6mm or 10mm tempered fire-resisting safety glass.

The glass has been developed for fire resistance applications (as defined in BS. 7346: Part 20) in varying thickness and pane size for in excess of ½ hour compliance with integrity.

The downstand has been tested to BS 7346: Part 3: 1990; EN1363-1 : 1999 Fire Resistance Test & EN12101-1 : 2006, Specification for Smoke Barriers.

SMS Fixed Glass Downstand
The SMS FS60 is an electrically operated automatic fire barrier to be used to form a continuous barrier against fire. The FS 60 can be provided to protect opening widths of up to 7m and heights up to 6.6m. The curtain head box is manufactured from Zintec steel, the enclosure is rated at the same temperature as the curtain fabric.

A suitably weighted bottom bar is provided to prevent deflection and ensure correct operation under gravity. The roller is constructed from tube, each of which incorporates a 24volt D.C motor.

The curtain fabric is made from filament glass fibre, both sides of the fabric is coated with a flame retardant silver grey aluminium filled polymer. The curtain has fixing options to suit all types of ceiling configurations and can be integrated into either a suspended or a solid ceiling, it remains hidden until required.

Complete product tested to BS476: Part 22: 1987 Clause 8, EN1634-1: 2008 and achieved a rating of 1000o C above 60 minutes.
The SMS FS240 is an electrically operated automatic fire barrier to be used to form a continuous barrier against fire. The FS 240 can be provided to protect opening widths of up to 30m on an over lapping system and heights up to 6.6m.

The fabric curtain is manufactured from stainless steel reinforced glass fibre fabric. The FS 240 curtain has fixing options to suit all types of ceiling configurations and can be integrated into either a suspended or a solid ceiling.
It remains hidden until required.

Upon receiving a signal from the fire detection system or on loss of power with the gravity fail safe system the curtain automatically unwinds to its operation position.

Complete product tested to (BS) EN1634-1 and achieved a rating of DH (1000o C above 240 minutes) When tested to EN1634-1 the FS 240 product achieved integrity performance of 264 minutes and irradiance (W) of 30 minutes.
The SMS Automatic Smoke Curtain is manufactured to provide an unobtrusive and aesthetically neutral solution to compartmentation issues throughout the most complex of buildings. Control Systems for the Automatic Smoke Curtains are designed to be robust and as simple as possible to provide minimum maintenance. The curtain is proven to fail safe to the operational position on total loss of primary and auxiliary power.

Should the mains power fail the group control panel will automatically switch to the integral standby battery, keeping the curtain retracted for 60 minutes. The head box is manufactured from 1.2mm galvanised steel, the enclosure is rated at the same temperature as the curtain fabric.

Standard head box sizes are 150mm x 150mm for single rollers (< width 5.5m) and 250mm x 150mm for > 5.5m wide, to drops of 3m. Large head boxes may be required for larger drops.

The SMS Automatic Smoke Curtain has been tested to (BS) EN12101-1:2005 and BS7346: Part 3, and achieved a rating of DA (600oc above 120 minutes) and is ASB 1 and 3 classified.

The fabric has a class 1 surface spread of flame when tested o BS 476: Part 7 and a fire propagation index I=1.4 when tested to BS 476: Part 6.
The active fire curtain barrier consists of a C41000WK wire inserted woven glass fibre fabric. The fabric is tested to withstand temperatures of up to 1000 o C for a period of 180 minutes minimum (UL standard 120 minutes minimum) & an irradiance protection of up to 20 minutes, this is wound onto a steel tube, each of which will incorporate a 24 volt d.c. motor, a sealed heavy duty ball bearing assembly, and an electronic control circuit.

A motor control circuit is placed adjacent to each fire curtain roller housing within the ceiling void, allowing access for maintenance, or mounted in a remote position from the curtain.
The Accordion Fire Curtain is a system which eliminates the use of corner posts / columns and therefore leads to the creation of more open space as well as saving space.

This type of curtain offers design flexibility it can be designed to a variety of shapes and a number of install options can be used to make it more aesthetically pleasing.

This does not compromise on performance and is compliant to applicable regulations.