DD CEN ISO/TS 27469:2011

What is ISO/TS 27469 - Method of test for fire dampers about?  

ISO/TS 27469 specifies a method for determining the following: 

• Ability of fire dampers installed in ventilation systems to prevent the spread of fire and heat through designated fire divisions; typical ratings are given in ISO 13702:1999, Table C.5. 
• Fire damper operational reliability in the petroleum, petrochemical, and natural gas industries, particularly offshore installations 

Note: It is planned to determine the methodology during the testing and development phase. 

• Ability of fire dampers installed in ventilation systems to withstand blast overpressures that may result from the explosion of a flammable gas 

ISO/TS 27469 applies to different start-up operations for different types of furnace and, therefore, tolerances in test conditions at the beginning of the test are not described in detail. The fire test enables only a limited assessment of the actuating mechanism being carried out and additional tests can be necessary to fully evaluate its operational reliability. 

Who is ISO/TS 27469 - Method of test for fire dampers for? 

ISO/TS 27469 on method of test for fire dampers is useful for: 

• Fire research and testing facilities  
• Manufacturers and installers of fire dampers 
• Fire safety authorities 
• Petroleum, petrochemical and natural gas industries 

Why should you use ISO/TS 27469 - Method of test for fire dampers? 

The purpose of ISO/TS 27469 is to enable evaluation of the ability of a fire damper installation to maintain the integrity of fire-rated barriers. Typical fire barrier ratings are given in ISO 13702:1999, Table C.5. 

ISO/TS 27469 allows to evaluate the following performance criteria: 

Fire integrity and insulation: to limit/control the spread of radiated and conducted heat at the protected side of a fire damper installation. It is necessary to determine the distance from the damper’s blades, in free air or along a duct, where temperatures do not exceed requirements 

• Ability to provide protection from both hydrocarbon pool fires and jet fires 
• Leakage past closed blades 
• Ability to withstand overpressure that can arise from an explosion 

ISO/TS 27469 is based on the use of existing approved fire research and testing facilities. 

Specially constructed facilities can be required for testing blast pressure withstand capability. It is important that test dampers be installed in a manner that represents their design installation. 

In carrying out the tests described in ISO/TS 27469, it is necessary to refer to other standards connected with the fire-testing of materials and application in the petroleum and natural gas industries. The test methods simulate thermal and overpressure conditions that can result from fire and explosion. The conditions in a real incident can be different, so the test results and resultant damper designations do not guarantee safety but can be used as elements of a fire and explosion risk assessment that takes into account all other pertinent factors. 

Note: It is planned to determine some aspects of ISO/TS 27469 during the development and testing stage.