ISO 21367:2007 PDF

Plastics — Reaction to fire — Test method for flame spread and combustion product release from vertically oriented specimens

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Title (English):

ISO 21367:2007

Plastics — Reaction to fire — Test method for flame spread and combustion product release from vertically oriented specimens

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 33
Publication date:: April 24, 2007
Edition:: ISO IS 21367 edition 1 version 1
ICS:: 13.220.40

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Description (English):

ISO 21367:2007 specifies a test method for plastics for the determination of the heat release rate, ignitability, surface spread of a flame, falling droplets/particles and smoke production using a "medium" scale specimen that simulates the early development stage of the fire. This test method can be used as a screening test for intermediate scale and large scale tests in addition to its use in factory production control, research and product development. ISO 21367:2007 provides data that is suitable for comparing reaction-to-fire performance of many materials, products, composites or assemblies under end use application conditions. The results of this test method are limited to specimens with heat release rates of less than 10 kW.

Technical details

Technical committee: ISO/TC 61/SC 4 - Burning behaviour
SKU: ISO 21367:2007

Abstract

Overview - ISO 21367:2007 (Plastics reaction to fire, vertical specimens)

ISO 21367:2007 specifies a medium-scale laboratory test method for plastics - reaction to fire - measuring heat release rate, ignitability, flame spread on vertically oriented specimens, falling droplets/particles and smoke production. The method simulates the early development stage of a fire and is intended as a screening test for intermediate/large-scale trials, factory production control, research and product development. Results are suitable for comparing reaction-to-fire performance of materials, products, composites or assemblies - with the important limitation that measured heat release rates must remain below 10 kW (tests must be stopped if exceeded).

Key topics and technical requirements

Specimen orientation and size: vertically mounted specimens representative of the product; typical exposed area and construction specified in the standard.
Heat release measurement: oxygen-consumption principle (oxygen depletion) in an exhaust duct to derive heat release rate (HRR).
Smoke measurement: opacimeter for smoke opacity and calculation of smoke production rate (SPR).
Ignition and flame spread: determination of time to ignition, sustained/transitory flaming, vertical and lateral flame spread and falling droplets/particles.
Test apparatus components: stainless-steel hood, radiant electric heater (capable up to 75 kW/m2 irradiance; uniform over central 100×100 mm), pilot burner, specimen holder, exhaust system with flow measurement, oxygen analyser, opacimeter, heat flux meter, calibration burner and data acquisition.
Calibration and accuracy: preliminary, operating and periodic calibrations required (includes calibration of orifice flow meters, heat flux meters and oxygen analyser).
Specimen preparation & conditioning: backing boards, spacers and dummy specimen (calcium silicate board ~700 × 500 mm, thickness ~12 ± 3 mm, density ~800 ± 150 kg/m3) and specified conditioning atmospheres.
Limitations & safety: warns against using the test alone to assess real fire hazard; combustible gases and hot equipment pose operator risks.

Practical applications - who uses it

Fire test laboratories performing reaction-to-fire screening for polymeric materials and assemblies.
Manufacturers and product developers for quality control, material selection and design iterations.
Fire safety engineers comparing materials, informing specification decisions for interiors, components and enclosures.
Regulatory bodies and certification schemes using medium-scale data to support larger-scale evaluation programs.

Related standards

ISO 5660-1 (cone calorimeter method - heat release)
ISO 13943 (fire safety vocabulary)
ISO 291 / ISO 554 (conditioning atmospheres)
ISO/TS 14934-1 (calibration of radiometers and heat flux meters)

Keywords: ISO 21367:2007, plastics reaction to fire, flame spread test, heat release rate, smoke production, vertical specimen, oxygen consumption method, medium-scale fire test.

Related standards

Standards mentioned in the description

Abstract

Overview - ISO 21367:2007 (Plastics reaction to fire, vertical specimens)

Key topics and technical requirements

Specimen orientation and size: vertically mounted specimens representative of the product; typical exposed area and construction specified in the standard.
Heat release measurement: oxygen-consumption principle (oxygen depletion) in an exhaust duct to derive heat release rate (HRR).
Smoke measurement: opacimeter for smoke opacity and calculation of smoke production rate (SPR).
Ignition and flame spread: determination of time to ignition, sustained/transitory flaming, vertical and lateral flame spread and falling droplets/particles.
Test apparatus components: stainless-steel hood, radiant electric heater (capable up to 75 kW/m2 irradiance; uniform over central 100×100 mm), pilot burner, specimen holder, exhaust system with flow measurement, oxygen analyser, opacimeter, heat flux meter, calibration burner and data acquisition.
Calibration and accuracy: preliminary, operating and periodic calibrations required (includes calibration of orifice flow meters, heat flux meters and oxygen analyser).
Specimen preparation & conditioning: backing boards, spacers and dummy specimen (calcium silicate board ~700 × 500 mm, thickness ~12 ± 3 mm, density ~800 ± 150 kg/m3) and specified conditioning atmospheres.
Limitations & safety: warns against using the test alone to assess real fire hazard; combustible gases and hot equipment pose operator risks.

Practical applications - who uses it

Fire test laboratories performing reaction-to-fire screening for polymeric materials and assemblies.
Manufacturers and product developers for quality control, material selection and design iterations.
Fire safety engineers comparing materials, informing specification decisions for interiors, components and enclosures.
Regulatory bodies and certification schemes using medium-scale data to support larger-scale evaluation programs.

Related standards

ISO 5660-1 (cone calorimeter method - heat release)
ISO 13943 (fire safety vocabulary)
ISO 291 / ISO 554 (conditioning atmospheres)
ISO/TS 14934-1 (calibration of radiometers and heat flux meters)

Keywords: ISO 21367:2007, plastics reaction to fire, flame spread test, heat release rate, smoke production, vertical specimen, oxygen consumption method, medium-scale fire test.

ISO 21367:2007 PDF

Technical details

Abstract

Overview - ISO 21367:2007 (Plastics reaction to fire, vertical specimens)

Key topics and technical requirements

Practical applications - who uses it

Related standards

Related standards

Abstract

Overview - ISO 21367:2007 (Plastics reaction to fire, vertical specimens)

Key topics and technical requirements

Practical applications - who uses it

Related standards

Related standards

Reaction-to-fire tests -- Heat release, smoke production and mass loss rate -- Part 1: Heat release rate (con…

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