FIRE RATED DUCTWORK AND BS9999 EXPLAINED

The CPD Certification Service approved presentation, entitled 'Fire Resistant Ductwork - why, where and how', compiled by award winning fire-rated ductwork system manufacturer, Fire Protection Ltd (FPL), has been revamped and updated to incorporate changes from BS5588 (Part 9) to BS9999.

BS 9999 is the Code of Practice for Fire Safety in the Design, Management and use of Buildings. The British Standard, which supersedes the majority of the BS5588 series of Codes of Practice, echoes the original Part 9. It aims to ensure that the design and construction of ductwork systems prevents them becoming the means by which fire, smoke and other products of combustion can spread from one compartment to another in a given time, or prejudice the safe use of escape routes. The code also makes reference to the importance of replacement, or make up air, when designing smoke extract systems.

The FPL presentation, designed for clients, engineers and authorities, has proven extremely popular. The 'why' element explains regulations and standards, the 'where' element describes systems and locations, whilst the 'how' section clarifies the types of fire resistant ductwork.

The detailed presentation extensively illustrates the two main applications for fire rated ductwork, namely maintaining compartmentation without the use of fire dampers (e.g. kitchen extract ducts) and systems active under fire conditions (e.g. smoke extract ducts). It can be organised for any mutually convenient date and time.

FPL's fire-resistant ductwork system, 'Flamebar BW11', is constructed from galvanised sheet steel, sprayed with a specially formulated water-based fire protective compound. The unique BW11 coating has a number of distinct benefits that include the provision of in excess of 2 hours insulation when handling internal gas temperatures of 400°C, a reduction in base duct construction thickness or gauge and a reduction in duct reinforcement. The coating's appearance also makes BW11 immediately identifiable as a fire rated duct, thus lessening the possibility of unauthorised post handover modifications. The compound contains selected mineral filters in a low permeability elastomeric binder and is applied at a thickness of approximately 1mm. Its unique design of low density and high durability allows it to accommodate induced stress arising from extreme conditions including climatic moisture, structural loading and the effect of thermal-shock during a fire.

The Flamebar BW11 system has been successfully tested for international use, under cellulosic fire conditions, to give in excess of four hours fire resistance in the event of a fire. It can confidently be specified and installed for smoke extract, car park extract, kitchen extract, and stair pressurisation systems.

For more information telephone: 01279 634230, visit: http://www.fireprotection.co.uk or e-mail:

  • 13 June 2010

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