NFPA 266-1998 Standard Method of Test for Fire Characteristics of Upholstered Furniture Exposed to Flaming Ignition Source

NFPA 266-1998 Standard Method of Test for Fire Characteristics of Upholstered Furniture Exposed to Flaming Ignition Source. 1-2.4* For upholstered furniture products containing only wood or a metal frame, or a combination of both, the proce- dure using a mock-up sample provides an indication of the open-flame performance of the finished article. For uphol- stered furniture products containing plastic frames and plastic decorative parts or special construction features, a mock-up sample is not always an accurate indicator of the open-flame performance of the finished article. 1-3 Summary of Test Method. 1-3.1 This procedure shall provide for exposure of full-size upholstered furniture specimens or furniture mock-ups to a standard flaming ignition source in a full-scale furniture calo- rimeter. 1-3.2 The standard ignition source shall be a gas burner. 1-3.3 Determinations shall be made and recorded for param- eters that include density of smoke, concentrations of carbon monoxide and carbon dioxide, weight loss, heat release rate, and total heat release. 1-4 Definitions. Shall. Indicates a mandatory requirement. Should. Indicates a recommendation or that which is advised but not required. Standard. A document, the main text of which contains only mandatory provisions using the word “shall” to indicate requirements and which is in a form generally suitable for mandatory reference by another standard or code or for adop- tion into law. Nonmandatory provisions shall be located in an appendix, footnote, or fine-print note and are not to be con- sidered a part of the requirements of a standard. 1-5 Units. 1-5.1 Metric units of measurement in this standard are in accordance with the modernized metric system known as the International System of Units (SI). 1-5.2 If a value for measurement as given in this standard is followed by an equivalent value in other units, the first stated shall be regarded as the requirement. A given equivalent value shall be considered as approximate. 3-1 Ignition Source. 3-1.1 A 250 mm ± 10 mm × 250 mm ± 10 mm (10 in. ± 0.39 in. ×10 in. ± 0.39 in.) burner shall be used as the ignition source in this test method. The burner shall be constructed of 13 mm ± 1 mm (0.5 in. ± 0.039 in.) outside diameter stainless steel tubing with 0.89 mm ± 0.05 mm (0.034 in. ± 0.002 in.) wall thickness [see Figure 3-1.1(a)]. The front side shall have 14 holes pointing straight out and spaced 13 mm ± 1...