SIST EN ISO 9239-1:2010
(Main)Reaction to fire tests for floorings - Part 1: Determination of the burning behaviour using a radiant heat source (ISO 9239-1:2010)
Reaction to fire tests for floorings - Part 1: Determination of the burning behaviour using a radiant heat source (ISO 9239-1:2010)
This part of ISO 9239 specifies a method for assessing the wind-opposed burning behaviour and spread of flame of horizontally mounted floorings exposed to a heat flux radiant gradient in a test chamber, when ignited with pilot flames. Annex A gives details of assessing the smoke development, when required. This method is applicable to all types of flooring, e.g. textile carpet, cork, wood, rubber and plastics coverings as well as coatings. Results obtained by this method reflect the performance of the flooring, including any substrate if used. Modifications of the backing, bonding to a substrate, underlay or other changes of the flooring may affect test results. This part of ISO 9239 is applicable to the measurement and description of the properties of floorings in response to heat and flame under controlled laboratory conditions. It should not be used alone to describe or appraise the fire hazard or fire risk of floorings under actual fire conditions. Information on the precision of the test method is given in Annex B.
Prüfungen zum Brandverhalten von Bodenbelägen - Teil 1: Bestimmung des Brandverhaltens bei Beanspruchung mit einem Wärmestrahler (ISO 9239-1:2010)
Diese Europäische Norm beschreibt ein Verfahren zum Nachweis des Brandverhaltens bei Beanspruchung entgegen der Luftströmung sowie der Flammenausbreitung horizontal angeordneter Bodenbeläge, die in einer Prüfkammer einem Wärmestromgefälle ausgesetzt werden und dabei durch eine Zündflamme entzündet werden. Sofern eine Beurteilung der Rauchentwicklung erforderlich ist, sind Einzelheiten hierzu Anhang A zu entnehmen.
Dieses Prüfverfahren gilt für alle Bodenbeläge, wie z. B. textile Bodenbeläge, Kork, Holz, Gummi und Kunst-stoffbeläge, sowie für Beschichtungen. Die mit diesem Prüfverfahren erzielten Ergebnisse zeigen das Brand-verhalten des gesamten geprüften Bodenbelags einschließlich einer etwaigen Trägerplatte. Änderungen des Bodenbelagrückens, der Verklebung mit der Trägerplatte, der Unterlagsschicht oder andere Änderungen des Bodenbelags können die Prüfergebnisse beeinflussen.
Diese Europäische Norm gilt für die Messung und Beschreibung der Eigenschaften von Bodenbelägen bei Beanspruchung durch Wärme und Flammen unter kontrollierten Laboratoriumsbedingungen. Sie sollte nicht allein dazu benutzt werden, die Brandgefahr bzw. das Brandrisiko von Bodenbelägen unter realen Brand-bedingungen zu beschreiben oder zu bewerten.
Hinweise zur Genauigkeit des Prüfverfahrens sind Anhang B zu entnehmen.
Essais de réaction au feu des revêtements de sol - Partie 1: Détermination du comportement au feu à l'aide d'une source de chaleur rayonnante (ISO 9239-1:2010)
L'ISO 9239-1:2010 prescrit une méthode d'évaluation du comportement au feu opposé au vent et de la propagation de flamme de revêtements de sol montés horizontalement et exposés à un gradient de flux énergétique dans une chambre d'essai, lorsqu'ils sont allumés avec une flamme pilote.
La présente méthode s'applique à tous les types de revêtements de sol comme la moquette textile, le liège, le bois et les revêtements en caoutchouc et en plastique ainsi que les enduits. Les résultats obtenus par la présente méthode reflètent les performances du revêtement de sol, y compris son substrat, le cas échéant. Les résultats d'essai sont susceptibles d'être affectés par des modifications apportées au support, au collage sur un substrat, à la thibaude ou par d'autres changements du revêtement.
L'ISO 9239-1:2010 s'applique au mesurage et à la description des propriétés des revêtements de sol en réponse à la chaleur et à la flamme dans des conditions contrôlées de laboratoire. Il ne convient pas de l'utiliser seule pour décrire ou évaluer les dangers ou le risque d'incendie des revêtements de sol dans des conditions réelles d'incendie.
Preskusi odziva talnih oblog na ogenj - 1. del: Ugotavljanje obnašanja pri gorenju z uporabo sevalnega vira toplote (ISO 9239-1:2010)
Ta del ISO 9239 določa metodo ocenjevanja obnašanja pri gorenju proti vetru in širjenje plamena vodoravno nameščenih talnih oblog, izpostavljenih toplotnemu toku sevalnega gradienta v preskusni komori. Dodatek A podaja podrobnosti o ocenjevanju razvoja dima, kadar je to potrebno. Ta metoda velja za vse tipe talnih oblog; npr. tekstilna preproga, obloge iz plute, lesa, gume in polimernih materialov kot tudi prevleke. Rezultati, pridobljeni z to metodo, odražajo delovanje talne obloge, vključnoz katerim koli substratom, če je uporabljen. Spremembe podlage, ki se veže na substrat, podloge ali druge spremembe talnih oblog lahko vplivajo na preskusne rezultate. Ta del ISO 9239 velja za merjenje in opis lastnosti talnih oblog kot odziv na vročino in ogenj pod nadzorovanimi laboratorijskimi pogoji. Ne sme se uporabljati sam za opis ali oceno požarne nevarnosti ali tveganja za talne obloge pod dejanskimi požarnimi pogoji. Informacije o natančnosti preskusne metode so podane v Dodatku B.
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Preskusi odziva talnih oblog na ogenj - 1. del: Ugotavljanje obnašanja pri gorenju z uporabo sevalnega vira toplote (ISO 9239-1:2010)Prüfungen zum Brandverhalten von Bodenbelägen - Teil 1: Bestimmung des Brandverhaltens bei Beanspruchung mit einem Wärmestrahler (ISO 9239-1:2010)Essais de réaction au feu des revêtements de sol - Partie 1: Détermination du comportement au feu à l'aide d'une source de chaleur rayonnante (ISO 9239-1:2010)Reaction to fire tests for floorings - Part 1: Determination of the burning behaviour using a radiant heat source (ISO 9239-1:2010)97.150Netekstilne talne oblogeNon-textile floor coverings59.080.60Tekstilne talne oblogeTextile floor coverings13.220.40Sposobnost vžiga in obnašanje materialov in proizvodov pri gorenjuIgnitability and burning behaviour of materials and productsICS:Ta slovenski standard je istoveten z:EN ISO 9239-1:2010SIST EN ISO 9239-1:201001-december-2010SIST EN ISO 9239-1:2010SLOVENSKI
STANDARDSIST EN ISO 9239-1:20021DGRPHãþD
SIST EN ISO 9239-1:2010
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN ISO 9239-1
June 2010 ICS 13.220.40; 59.080.60; 97.150 Supersedes EN ISO 9239-1:2002English Version
Reaction to fire tests for floorings - Part 1: Determination of the burning behaviour using a radiant heat source (ISO 9239-1:2010)
Essais de réaction au feu des revêtements de sol - Partie 1: Détermination du comportement au feu à l'aide d'une source de chaleur rayonnante (ISO 9239-1:2010)
Prüfungen zum Brandverhalten von Bodenbelägen -Teil 1: Bestimmung des Brandverhaltens bei Beanspruchung mit einem Wärmestrahler (ISO 9239-1:2010) This European Standard was approved by CEN on 19 May 2010.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 9239-1:2010: ESIST EN ISO 9239-1:2010
EN ISO 9239-1:2010 (E) 2 Contents Page Foreword .3 SIST EN ISO 9239-1:2010
EN ISO 9239-1:2010 (E) 3 Foreword This document (EN ISO 9239-1:2010) has been prepared by Technical Committee ISO/TC 92 “Fire safety” in collaboration with Technical Committee CEN/TC 127 “Fire safety in buildings” the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2010, and conflicting national standards shall be withdrawn at the latest by December 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 9239-1:2002. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 9239-1:2010 has been approved by CEN as a EN ISO 9239-1:2010 without any modification. SIST EN ISO 9239-1:2010
SIST EN ISO 9239-1:2010
Reference numberISO 9239-1:2010(E)© ISO 2010
INTERNATIONAL STANDARD ISO9239-1Third edition2010-06-15Reaction to fire tests for floorings — Part 1: Determination of the burning behaviour using a radiant heat source Essais de réaction au feu des revêtements de sol — Partie 1: Détermination du comportement au feu à l'aide d'une source de chaleur rayonnante
SIST EN ISO 9239-1:2010
ISO 9239-1:2010(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.
COPYRIGHT PROTECTED DOCUMENT
©
ISO 2010 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56 • CH-1211 Geneva 20 Tel.
+ 41 22 749 01 11 Fax
+ 41 22 749 09 47 E-mail
copyright@iso.org Web
www.iso.org Published in Switzerland
ii © ISO 2010 – All rights reserved
SIST EN ISO 9239-1:2010
ISO 9239-1:2010(E) © ISO 2010 – All rights reserved iii Contents Page Foreword.iv Introduction.v 1 Scope.1 2 Normative references.2 3 Terms and definitions.2 4 Principle.3 5 Apparatus.3 6 Test specimens.6 7 Conditioning.7 8 Test procedure.7 9 Expression of results.9 10 Test report.9 Annex A (normative)
Smoke measurement.20 Annex B (informative)
Precision of test method.23 Annex C (normative)
Gas and air supplies.24 Bibliography.25
SIST EN ISO 9239-1:2010
ISO 9239-1:2010(E) iv © ISO 2010 – All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 9239-1 was prepared by Technical Committee ISO/TC 92, Fire safety, Subcommittee SC 1, Fire initiation and growth. This third edition cancels and replaces the second edition (ISO 9239-1:2002) which has been technically revised. ISO 9239 consists of the following parts, under the general title Reaction to fire tests for floorings: ⎯ Part 1: Determination of the burning behaviour using a radiant heat source ⎯ Part 2: Determination of flame spread at a heat flux level of 25 kW/m2 SIST EN ISO 9239-1:2010
ISO 9239-1:2010(E) © ISO 2010 – All rights reserved v Introduction The measurements in the test method in this part of ISO 9239 provide a basis for estimating one aspect of fire exposure behaviour of floorings. The imposed radiant flux simulates the thermal radiation levels likely to impinge on the floor of a corridor whose upper surfaces are heated by flames or hot gases or both, during the early stages of a developing fire in an adjacent room or compartment under wind-opposed flame-spread conditions.
SIST EN ISO 9239-1:2010
SIST EN ISO 9239-1:2010
INTERNATIONAL STANDARD ISO 9239-1:2010(E) © ISO 2010 – All rights reserved 1 Reaction to fire tests for floorings — Part 1: Determination of the burning behaviour using a radiant heat source WARNING — The possibility of a gas-air fuel explosion in the test chamber should be recognized. Suitable safeguards consistent with sound engineering practice should be installed in the panel fuel supply system. These should include at least the following: ⎯ a gas-feed cut-off which is immediately activated when air and/or gas supply fail; ⎯ a temperature sensor or a flame detection unit directed at the panel surface that stops fuel flow when the panel flame goes out. The attention of all persons concerned with managing and carrying out this test is drawn to the fact that fire testing may be hazardous and that there is a possibility that toxic and/or harmful gases may be evolved during the test. Operational hazards may also arise during the testing of specimens, such as the possibility of an explosion, and during the disposal of test residues. An assessment of all the potential hazards and risks to health should be made and safety precautions should be identified and provided. Written safety instructions should be issued. Appropriate training should be given to relevant personnel. Laboratory personnel should ensure that they follow written instructions at all times. 1 Scope This part of ISO 9239 specifies a method for assessing the wind-opposed burning behaviour and spread of flame of horizontally mounted floorings exposed to a heat flux radiant gradient in a test chamber, when ignited with pilot flames. Annex A gives details of assessing the smoke development, when required. This method is applicable to all types of flooring, e.g. textile carpet, cork, wood, rubber and plastics coverings as well as coatings. Results obtained by this method reflect the performance of the flooring, including any substrate if used. Modifications of the backing, bonding to a substrate, underlay or other changes of the flooring may affect test results. This part of ISO 9239 is applicable to the measurement and description of the properties of floorings in response to heat and flame under controlled laboratory conditions. It should not be used alone to describe or appraise the fire hazard or fire risk of floorings under actual fire conditions. Information on the precision of the test method is given in Annex B. SIST EN ISO 9239-1:2010
ISO 9239-1:2010(E) 2 © ISO 2010 – All rights reserved 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 554, Standard atmospheres for conditioning and/or testing — Specifications ISO 13943, Fire safety — Vocabulary ISO 14697, Reaction-to-fire tests — Guidance on the choice of substrates for building and transport products ISO 14934-3, Fire tests — Calibration and use of heat flux meters — Part 3: Secondary calibration method EN 13238, Reaction to fire tests for building products — Conditioning procedures and general rules for selection of substrates IEC 60584-1, Thermocouples — Part 1: Reference tables 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 13943 and the following apply. 3.1 heat flux
amount of thermal energy emitted, transmitted or received per unit area and unit time NOTE Heat flux is expressed in kilowatts per square metre (kW/m2). 3.2 critical heat flux at extinguishment
CHF incident heat flux, in kW/m2, at the surface of a specimen at the point where the flame ceases to advance and may subsequently go out 3.3 heat flux at X min HF-X heat flux, in kW/m2, received by the specimen at the most distant spread of flame position observed during the first X min of the test 3.4 critical heat flux heat flux at which the flame extinguishes (CHF) or the heat flux after the test period of 30 min (HF-30), whichever is the lower value (i.e. the flux corresponding to the furthest extent of spread of flame within 30 min) 3.5 heat flux profile curve relating the heat flux on the specimen plane to the distance from the zero point 3.6 zero point of heat flux profile inner edge of the hottest side of the specimen holder 3.7 sustained flaming persistence of flame on or over the surface of the specimen for a period of more than 4 s SIST EN ISO 9239-1:2010
ISO 9239-1:2010(E) © ISO 2010 – All rights reserved 3 3.8 flame-spread distance furthest extent of travel of a sustained flaming along the length of the test specimen within a given time 3.9 flooring upper layer(s) of a floor, comprising any surface finish with or without an attached backing and with any accompanying underlay, interlay and/or adhesive 3.10 substrate product which is used immediately beneath the product about which information is required NOTE For a flooring, it is the floor on which the flooring is mounted or the material representing the floor. 3.11 tiles generally square flooring with linear dimensions of up to 500 mm 4 Principle The test specimen is placed in a horizontal position below a gas-fired radiant panel inclined at 30° where it is exposed to a defined heat flux. A pilot flame is applied to the hotter end of the specimen. The test principle is illustrated in Figure 1. Following ignition, any flame front which develops is noted and a record is made of the progression of the flame front horizontally along the length of the specimen in terms of the time it takes to spread to defined distances. If required, the smoke development during the test is recorded as the light transmission in the exhaust stack. The results are expressed in terms of flame-spread distance versus time, the critical heat flux at extinguishment and smoke density versus time. 5 Apparatus 5.1 General The apparatus shall be as described in 5.2 to 5.8 and shall have the dimensions shown in Figures 2 to 5. The apparatus shall be placed in a room that is sufficiently large that there is a distance of at least 0,4 m between the apparatus and the walls and the ceiling. 5.2 Test chamber The chamber shall be made of calcium silicate boards of (13 ± 1) mm thickness and 650 kg/m3 to 750 kg/m3 nominal density, with a tightly fitting panel of fire-resistant glass with dimensions of (110 ± 10) mm × (1 100 ± 100) mm, situated at the front so that the whole length of the specimen can be observed during the test. The chamber may have an outside metal cladding. Below this observation window, an access door shall be provided through which the test specimen platform can be moved into the chamber for the test and out of the chamber after test. 5.3 Specimen holder The test specimen holder is fabricated from heat-resistant L-profile stainless steel of (2,0 ± 0,1) mm thickness with the dimensions shown in Figure 6. The test specimen is exposed through an opening (200 ± 3) mm × (1 015 ± 10) mm. The test specimen holder is fastened to the sliding steel platform by means of two bolts on each end. SIST EN ISO 9239-1:2010
ISO 9239-1:2010(E) 4 © ISO 2010 – All rights reserved The test specimen holder shall be provided with a means to secure the specimen (e.g. steel bar clamps); a maximum of eight clamps shall be used. The overall thickness of the holder is (22 ± 2) mm. 5.4 Sliding platform The bottom of the chamber shall consist of a sliding platform which shall have provision for rigidly securing the test specimen holder in a fixed and level position (see Figure 1). The total air access area between the chamber and the test specimen holder shall be (0,23 ± 0,03) m2 uniformly distributed on all sides of the test specimen. 5.5 Steel scale At least one steel scale marked with 10 mm and 50 mm intervals has to be mounted on one side of the test specimen holder. A second steel scale on the other side of the specimen holder may also be used. 5.6 Gas-fired radiant panel The source of radiant heat energy shall be a panel of porous refractory material mounted in a metal frame, with a radiation surface of (300 ± 10) mm × (450 ± 10) mm. The panel shall be capable of withstanding temperatures up to 900 °C and use a fuel gas/air mixing system1) with suitable instrumentation (see Annex C) to ensure consistent and repeatable operation. The radiant heat panel is placed over the test specimen holder with its longer dimension at (30 ± 1)° to the horizontal plane (see Figure 5). 5.7 Pilot burner The pilot burner, used to ignite the test specimen, shall be of nominal internal diameter 6 mm and of outer diameter 10 mm, and be made of stainless steel having two lines of 19 evenly spaced 0,7 mm diameter holes drilled radially along the centre-line and 16 evenly spaced 0,7 mm diameter holes drilled radially 60° below the centre-line (see Figure 7). In operation, the propane flow rate shall be adjusted to (0,026 ± 0,002) l/s. The pilot burner shall be positioned so that the flames generated from the lower line of holes will impinge on the specimen (10 ± 2) mm from the zero point (see Figure 8). The pilot burner tube shall be 3 mm above the edge of the specimen holder when the burner is in the ignition position. When not being applied to the test specimen, the burner shall be capable of being moved at least 50 mm away from the zero point of the test specimen. The gas used shall be commercial-grade propane having a calorific value of approximately 83 MJ/m3. NOTE 1 It is important to keep the holes in the pilot burner clean. A soft wire brush is suitable to remove surface contaminants. Nickel-chromium or stainless-steel wire, 0,5 mm in diameter, is suitable for opening the holes. NOTE 2 With the propane gas flow properly adjusted and the pilot burner in the test position, the pilot flame will vary in height from approximately 60 mm to approximately 120 mm across the width of the burner (see Figure 8). 5.8 Exhaust system An exhaust system2), connected to the exhaust duct and de-coupled from the exhaust stack of the test apparatus, shall be used to extract the products of combustion. With the gas-fired radiant panel turned off, the dummy specimen in place and the access door closed, the air velocity in the exhaust stack shall be (2,5 ± 0,2) m/s.
1) Propane and/or butane/air mixtures have been proven to be suitable, but other fuel gas/air mixtures may also be used. 2) An exhaust capacity of 39 m3/min to 85 m3/min (at 25 °C, 1 bar) has proved to be suitable. SIST EN ISO 9239-1:2010
ISO 9239-1:2010(E) © ISO 2010 – All rights reserved 5 5.9 Anemometer An anemometer with an accuracy of ± 0,1 m/s shall be provided for measuring the air velocity in the exhaust stack. It shall be fitted in the exhaust stack, in such a way that its measuring point coincides with the centre-line of the exhaust stack at (250 ± 10) mm above the lower edge of the exhaust stack (see Figure 4). 5.10 Radiation pyrometer In order to control the thermal output of the radiant panel, a radiation pyrometer with a range of 480 °C to 530 °C (black-body temperature) and an accuracy of ±5 °C suitable for viewing a circular area 250 mm in diameter at a distance of about 1,4 m shall be used. The sensitivity of the pyrometer shall be substantially constant between the wavelengths 1 µm and 9 µm. 5.11 Thermocouples A 3,2 mm stainless-steel sheathed type K thermocouple, in accordance with IEC 60584-1 with an insulated measuring junction, shall be mounted in the flooring radiant test chamber. It shall be located in the longitudinal central vertical plane of the chamber, 25 mm down from the top and 100 mm back from the inside wall of the exhaust stack (see Figures 4 and 5). A second thermocouple may be inserted centrally in the exhaust stack, at a distance of (150 ± 2) mm from the top of the exhaust stack. The thermocouples shall be cleaned after each test. 5.12 Heat flux meter The heat flux meter used to determine the heat flux profile to the test specimen shall be of the Schmidt-Boelter type without a window and with a diameter of 25 mm. Its range shall be from 0 kW/m2 to 15 kW/m2, and shall be calibrated over the operating heat flux level range from 1 kW/m2 to 15 kW/m2. A source of cooling water with a temperature of 15 °C to 25 °C shall be provided for this instrument. The heat flux meter shall have an accuracy of ±3 % of the measured value, and shall be calibrated in accordance with ISO 14934-3. 5.13 Dummy specimen The dummy specimen used for calibration shall be made of (20 ± 1) mm thick uncoated calcium silicate board of (850 ± 100) kg/m3 density. It shall be (250 ± 10) mm wide and (1 050 ± 20) mm long (see Figure 6), with (26 ± 1) mm diameter holes centred on and along the centre-line at 110 mm, 210 mm through to 910 mm locations, measured from the zero point of the test specimen. 5.14 Recording equipment Recording equipment shall be suitable for recording the output from the radiation pyrometer and the heat flux meter. 5.15 Timing device A timing device capable of recording elapsed time to the nearest second and with an accuracy of 1 s in 1 h shall be used. 5.16 Smoke measurements The apparatus described in Annex A shall be used if smoke measurements are required. SIST EN ISO 9239-1:2010
ISO 9239-1:2010(E) 6 © ISO 2010 – All rights reserved 6 Test specimens The test specimens shall be representative of the flooring in its end use. 6.1 Number Cut six specimens with dimensions (1 050 ± 5) mm × (230 ± 5) mm, three in one direction (e.g. production direction) and three in a direction perpendicular to the first direction. 6.2 Substrates The specimen shall be mounted on a substrate that simulates the actual floor (see EN 13238 or ISO 14697) and shall simulate actual installation practice. 6.3 Adhesives The adhesive used for the specimens shall be representative of those used in practice. If in practice different adhesives are used, the specimens shall be prepared using each of the different adhesives or without adhesives. 6.4 Underlay When used as part of the specimen, underlays shall be representative of those used in practice. 6.5 Tiles If the specimen consists of tiles, it shall be mounted in such a way that at least one joint is situated 250 mm from the zero point. Where the tile is not sufficiently wide to cover the width of the specimen holder, the test specimen shall be prepared to incorporate a centre-longitudinal joint. 6.6 Loose laid flooring Loose laid flooring including tiles, when tested without adhesives, shall be fixed only by means of the specimen holder and its clamps (see 5.3). Flooring, which due to shrinkage withdraws from the specimen holder frame, can show different results depending on the fixing. Special attention shall therefore be given to the use of good fixing techniques for floorings with a tendency to shrink during the heat exposure. 6.7 Washing and cleaning To determine the effect of washing or cleaning procedures on the fire performance of the flooring, the test specimens shall be washed or cleaned in accordance with the procedures given in the relevant product specification for the flooring. 6.8 Formal test A formal test shall consist of the results from three specimens which are identical in all respects. Additional details for the preparation of the test specimen shall be in accordance with the relevant product specifications. SIST EN ISO 9239-1:2010
ISO 9239-1:2010(E) © ISO 2010 – All rights reserved 7 For loose fill materials and for materials that melt forming molten pools, ensure that the sides of the specimen holder are fully closed. No attempt should be made to increase the height of the specimen holder to adjust the incident heat flux on the specimen. 7 Conditioning The specimens shall be conditioned as specified in EN 13238 or ISO 554. The curing time for flooring, which is glued to the substrate, is at least three days. This time may be part of the conditioning. 8 Test procedure 8.1 Calibration procedure 8.1.1 The apparatus shall be calibrated using the following procedure after each essential change of the apparatus, or at least once a month. If there are no changes in subsequent calibrations, this interval may be extended to six months. 8.1.2 Position the sliding platform and the mounting frame together with the dummy specimen in the chamber. Measure the air-flow rate in the exhaust stack with the exhaust system running and the access door closed and, if necessary, adjust it to (2,5 ± 0,2) m/s. Ignite the radiant panel. Allow the unit to heat for at least 1 h until the chamber temperature has stabilized (see 8.2.2). The pilot burner shall be off during this period. 8.1.3 Measure the heat flux level at the 410 mm point with the total heat flux meter. Insert the heat flux meter in the hole so that its detecting surface is between 2 mm and 3 mm above and parallel to the plane of the dummy specimen. Allow the reading to stabilize over a 30 s period. Read its output over a subsequent 30 s. If the averaged level is (5,1 ± 0,2) kW/m2, start the heat flux profile determination. If it is not, make the necessary adjustments to the gas/air flows to the panel, and the in-panel fuel flow, at least 10 min before a new reading of the heat flux is taken. 8.1.4 Perform the determination of the heat flux profile. Insert the heat flux meter in each hole in turn, starting with the 110 mm location and ending with the 910 mm location. Ensure that the detecting plane of the meter and time of measurement agree with 8.1.3. To determine whether the heat flux level has changed during these measurements, check the reading at 410 mm, after the 910 mm reading. 8.1.5 Record the heat flux data as a function of distance along the specimen plane. Carefully draw a smooth curve through the data points. This curve is the heat flux profile curve (see Figure 9). The heat flux value reported and used as a basis for determining the CHF is based on interpolations of this curve. If the heat flux profile curve is within the tolerances of Table 1, the test equipment is in calibration and the heat flux profile determination is completed. If not, carefully adjust the fuel flow and allow at least 10 min to ensure that the chamber temperature is stabilized. Repeat the procedure until the heat flux profile is within the specifications in Table 1. NOTE To correct the heat flux at the hotter end of the specimen, normally only a change of gas flow is necessary. To co
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.