Two requiring regular maintenance. The passive fire protection products

Two methods (active and passive) of fire protection are typically employed to protect and/ordelay the collapse of steel structures from heat generated in a fire. Active mechanisms includesprinklers, alarms, or gas release systems which are activated immediately in a fire. Althoughactive systems are highly effective, they have some limitations, such as considerable expense,involving complex equipment, an inability to prevent flame spread and extinguish large fires,reduced visibility due to the stratification of smoke, and requiring regular maintenance. The passive fire protection products in both non-reactive (boards, mineral fiber, and cementitiousspray) and reactive (intumescent coating) forms, installed on the elements to be protected, provide localized protection generally by thermal insulation.3 The low cost, traditional nonreactive passive systems have also some inadequacies, including esthetically unappealingvisually exposed steelwork, vulnerability to damage when mechanical and electrical systemsare being installed, unpleasant procedure, and labor intensive application. The adoption of intumescent coatings as passive fire protection for both commercial and industrial applicationshas increased significantly in recent years because of esthetics, speed of construction, cost savings, corrosion protection, and better quality control. In addition, allowing for offsite application of intumescent coatings can provide a decorative and protective finish that does not detract from the original appearance of the exposed steelwork. This is evident in new airports, shopping malls, leisure facilities, hospitals, hotels, sports stadium, and office buildings, where today more and more intumescent paints have been used to enable the architect to use the fullest creative design possibilities of the steel alone.1.2 Market for intumescent coating in steel applicationsAs shown in Figure 1, the application of intumescent coatings and market share is growingmore rapidly since 2001 as compared to other passive fire protection systems for the fire protection of steel structures. This is because of the development of thin film intumescent coatings that provide better performance with cost effectiveness and by the development of offsite application method which has given manufacturers a new market.4 In addition, analysis from Frost and Sullivan, Strategic Analysis of the Global Intumescent Coatings Market, finds the market earned approximately $709.8 million in 2012 and estimates this to reach $918.2 million in 2018.5.