firetestingtechnology

Fire Tw R E s s Wes ex RH19 2H

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The Single­FlameSource Test(EN ISO 11925­2)

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FIRE TESTING TECHNOLOGY

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EN ISO 11925­2:Reaction to fire for tests –Ignitability of buildingproducts subjected to directimpingement of flame –Part 2: Single­flame sourcetest.

The test is required as part of theEuropean construction productsregulation classification of reactionto fire performance for wall androofing products and floorcoverings. “The Single FlameSource Test” (Ignitability Apparatus)is built in accordance withEN ISO 11925­2.

Full classification and performancecriteria can be found in a separateFTT document “New European Fire Testing ClassificationEN ISO 11925­2: Reaction to fire for Construction Products.”

Product ClassificationThe European ConstructionProducts Regulation classificationcriteria for all building products, hasperformance classes from A­F.Although other tests are requiredfor assessment, the single flamesource apparatus is needed forqualifying all types of constructionproducts to classes B, C, D and E.

The classification criteria for eachproduct group are shown in thetables below.

CLASSIFICATION FOR CONSTRUCTION PRODUCTS EXCLUDING FLOORINGS

Class Classification Criteria Additional Classification Other Test Method

B Fs ≤ 150mm within 60s (Exposure = 30s) Smoke production and Flaming droplets/particles EN 13823

C Fs ≤ 150mm within 60s (Exposure = 30s) Smoke production and Flaming droplets/particles EN 13823

D Fs ≤ 150mm within 60s (Exposure = 30s) Smoke production and Flaming droplets/particles EN 13823

E Fs ≤ 150mm within 20s (Exposure = 15s) Flaming droplets/particles –

CLASSIFICATION FOR FLOORING PRODUCTS

Class Classification Criteria Additional Classification Other Test Method

Bfl Fs ≤ 150mm within 20s (Exposure = 15s) Smoke production EN ISO 9239­1

Cfl Fs ≤ 150mm within 20s (Exposure = 15s) Smoke production EN ISO 9239­1

Dfl Fs ≤ 150mm within 20s (Exposure = 15s) Smoke production EN ISO 9239­1

Efl Fs ≤ 150mm within 20s (Exposure = 15s) – –

CLASSIFICATION FOR LINEAR PIPE THERMAL INSULATION PRODUCTS

Class Classification Criteria Additional Classification Other Test Method

BL Fs ≤ 150mm within 60s (Exposure = 30s) Smoke production and Flaming droplets/particles EN 13823

CL Fs ≤ 150mm within 60s (Exposure = 30s) Smoke production and Flaming droplets/particles EN 13823

DL Fs ≤ 150mm within 60s (Exposure = 30s) Smoke production and Flaming droplets/particles EN 13823

EL Fs ≤ 150mm within 20s (Exposure = 15s) Flaming droplets/particles –

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THE SINGLE FLAME SOURCE TEST

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The FTT IgnitabilityApparatusEN ISO 11925­2 is based on theKleinbrenner method fordetermining ignitability of buildingproducts in the vertical orientationby direct small flame impingementunder zero impressed irradiance.

The FTT Ignitability Apparatus issupplied as a complete easy­to­usesystem incorporating safetyfeatures. It has large front and sidedoors for easy access. These areglazed with toughened glass for fullview of the specimen during a test.

Fully Adjustable BurnerAn extensively adjustable burnerassembly, mounted on runnersenables the small premixed flameto be tilted at an angle of 45° to thespecimen and offered to it in onefluid movement.

A fully adjustable specimen supportframe facilitates lateral and verticalmovement of the specimen holderso that the flame can be applied atthe correct position for eithersurface exposure or edge exposure.

Specimen HolderThe specimen holders are capableof housing the specimens up to andincluding 60 mm thick. The FTTignitability apparatus is suppliedwith one specimen holder. Optionalextras: multi­layered and loose fillmaterials.

Fully Adjustable Burner

Specimen Holders

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FIRE TESTING TECHNOLOGY

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TECHNICAL SPECIFICATIONS

Measuring Principle Ignitability from small flame source

Cabinet Dimensions (exterior) 700mm (W) × 400mm (D) × 800mm (H)

System Dimensions 1500mm (W) × 1200mm (D) × 900mm (H)

Sample holder Standard holder and options for multi­layer and loose fill materials

Anemometer ± 0.1 m/s accuracy

Stopwatch Accuracy better than 1 second in 60 minutes

SERVICES

Test Room The ignobility apparatus should be situated in a draught freeenvironment at 23 ± 5°C and a relative humidity of 50 ± 20%.

Gas Supply A supply of natural gas of minimum 95% purity. In order to obtainflame stability the gas pressure shall be between 10kPa and 50kPa.

Hood The combustion chamber should be situated under a suitableextraction system.

Due to the continuous development policy of FTT technical changes could be made without prior notice.

AccurateMeasurementA digital anemometer/thermometer and a stopwatchare incorporated for simplebut accurate measurement ofthe flow, temperature andtime.

Other Euroclass Test MethodsDetailed product catalogues are also available for:• Single Burning Item

EN 13823 Reaction to fire tests for building products excluding floorings exposed to thermal attack by a singleburning item, the SBI.

• Oxygen Bomb CalorimeterEN ISO 1716 Reaction to fire tests for building products – Determination of the heat of combustion.

• Non Combustibility ApparatusEN ISO 1182 Reaction to fire tests for building products – Non combustibility test.

• Flooring Radiant PanelEN ISO 9239­1 Reaction to fire tests for building products – Horizontal surface spread of flame for floorcoverings.

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THE SINGLE FLAME SOURCE TEST

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Unrivalled Experience inDesign and ManufacturingFTT’s site in East Grinstead, is home to the largest group of fire scientists andinstrumentation design engineers working on fire testing instrumentation, and is at the heart of our design andmanufacturing. For more than 30 years FTT has provided the highest quality instruments and service for fire testing and research professionals worldwide, directly and through its extensive global sales and support network.

Quality• World­class

manufacturing inaccordance withmultiple internationaland national standards,including: EN, ISO &ASTM

• ISO 9001, ISO 14001certified

Integrity• A dedicated team

passionate about firetestinginstrumentation andcontinuous productimprovement

• Delivering reliable,robust and easy­to­useinstruments for thepast 30 years

Excellence• A world­class team

made up of qualifiedfire scientists,mechanical, electricaland electronic fireinstrument designengineers andproduction, installationand maintenanceengineers

Global• World­wide

distribution networkfor global sales,installations, training,maintenance andtechnical support

• Leading global supplierof the ConeCalorimeter, LargeScale Calorimeter, NBSSmoke Chamber andOxygen Index

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