ISO INTERNATIONAL STANDARD 12949 First edition 2011-11-01 Standard test method for measuring the heat release rate of low flammability mattressesandmattresssets Methoded'essai normaliséepourmesurerledebit calorifique de matelasetd'elementsdematelasainflammabilitereduite Reference number ISO 12949:2011(E) ISO @ISO2011 ISO12949:2011(E) COPYRIGHTPROTECTEDDOCUMENT ISO 2011 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 [email protected] Web www.iso.org Published in Switzerland i ISO 2011 All rights reserved ISO12949:2011(E) Contents Page Foreword Introduction 1 Scope 2 Normativereferences. 3 Terms and definitions.. 4 Summary of test method 5 Significance and use. 6 Apparatusand equipment. 6.1 Test area.. 6.2 Testframe 6.3 Ignitionsource 6.4 Fuelsupplyandcontrol 10 6.5 Ignitionburnergasflow. 7 Test specimens 12 8 Testpreparation. 12 8.1 Specimenconditioning 12 8.2 Instrument calibration... 13 8.3 Specimenorientation 13 8.4 Burner set-up... 13 8.5 Burneralignmentprocedure 14 8.6 Video recording. 17 9 Testprocedure 18 9.1 Safetyprecautions 18 9.2 Burnerpreparation.. 18 9.3 Initiation of recording systems. 18 9.4 Test initiation 18 9.5 Testconduct 19 10 Test report 19 AnnexA (informative)Reducing fire hazards associated with mattress flammability .21 Bibliography 23 ISO 2011 All rights reserved ii ISO 12949:2011(E) Foreword iSO (the International Organizationfor Standardization) isa worldwidefederationof national standards bodies non-governmental, in liaison with isO, also take part in the work.isO collaborates closely withthe International Electrotechnical Commission (IEC)on all matters of electrotechnical standardization. The main task oftechnical committees istoprepare International Standards.Draft International Standards International Standard requires approval by at least75%of thememberbodies 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. ISO12949was preparedby Technical CommitteeISO/TC92,Fire safety,Subcommittee SC 1, Fire initiation and growth. iv ISO 2011All rights reserved ISO12949:2011(E) Introduction Atypical bed consists ofseveral components, including amattress,afoundation,anda collection ofbedclothes (e.g.mattress pad, sheets,pillows,blankets,quilts and/or comforters).Mattress andbeddingfires are a major which the bedclothes are the first items ignited, and those flames ignite the mattress or foundation. In the United States, approximately two-thirds of all deaths from flaming bedfires occur after the room has reached about half of the fatalities that occur within the room of origin. is ignited, the fire develops rapidly. Room flashover occurs at heat release rates near or above 1 ooo kw (1 MW) for small-to-medium size bedrooms [3], 1 m wide mattresses, without bedclothes, have been shown to appreciably more threatening on larger beds [6]. Itfollows that a significant reduction in bed fire fatalities can be achieved by reducing the combined peak heat to 200 kW and the total heat release to 15 MJ during the first 10 min of the test [7]. [8]. Combined with the typical heat release rate of the bedclothes, which generally occurs well before the peak heat release from room flashover. Furthermore, as the intensity of the bed fire is decreased this much, there is an accompanying reduction in the spatial extent of the radiant heat from flames. This reduces the likelihood that other bedroom andescapethefire. This International Standard addresses a fire hazard scenario different from one