Fire protection fireproofing materials

Fireproofing is a fire resistant material or system that is applied to a surface to delay heat transfer to that surface. Fireproofing, a form of passive fire protection, protects against intense and prolonged heat exposure that can cause the weakening of steel and eventual collapse of unprotected equipment, vessels, and supports and lead to the spread of burning liquids and substantial loss of property. The primary purpose is to improve the capability of equipment/struc-... 

Fire resistant insulating material can provide passive protection for both vertical and horizontal structural steel members. The level or rating of fire resistance should be consistent to the expected fire duration. Where only fire resistant insulating material will be used, the material and its installation system should be specified to have a 2- to 3-hour fire rating (UL 1709). In applications using a combination of fixed water spray or sprinkler protection and fire resistant insulation, a 1- to 2-hour fire rating (UL 1709) is frequently specified for the fireproofing. 

Fire-resistive insulating material only 2 to 3-hour rated fireproofing 2- to 3-hour rated fireproofing Passive protection potential for unseen corrosion. 

Combination water spray with fire-resistive insulating material 1 to 1V2-hour rated fireproofing plus water spray (as above) 1 to 1V2-hour rated fireproofing plus water spray (as above) Active protection but the passive fireproofing allows some time of protection in event water system fails. 

Fireproofing may also be used as passive protection for pressure vessels. Fireproofing reduces the fire exposure heat input to the protected vessel and the rate of increase of the vessel wall temperature. Outside surfaces of vessels that may be exposed to fire should be covered with a fireproofing material having a fire endurance rating of 2 hours. Refer to Chapter 7 for additional information on fireproofing. 

Fireproofing—Materials or application of materials to provide a degree of fire resistance to protected substrates. 

Fireproof paint is a paint which in itself does not (after application) contain any material or substance that will contribute fuel to a fire but which does not necessarily impart any fire protection to the material to which it is applied. 

A vessel provided with fireproofing material (insulation) rated to withstand the expected fire exposures until other fire protection measures are employed (e.g., manual firefighting)... 

Intumescent fireproofing— A passive material that undergoes a chemical reaction when exposed to high heat or direct flame impingement that protects against the heat from a fire without additional intervention. 

Fire and Smoke Models—mathematical estimation model depicting the duration and extent of heat, flame, and smoke that may be generated from the ignition of a release of material that may produce combustion. The results of these estimates are compared against protective mechanisms (e.g., firewater, fireproofing, etc.) afforded to the subject area to determine adequacy. 

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