ISO TS 5660-4:2016 pdf free

ISO TS 5660-4:2016 pdf free.Reaction-to-fire tests一Heat release, smoke production and massl OSS rate
The measurement of the heat release rate and total heat release is used to quantify the test specimen’s ability to ignite and contribute heat to the fire. It is based on the observation that, generally, the net heat of combustion of a material is directly related to the quantity of oxygen required for its combustion.This relationship is such that approximately 13,1 × 103 kJ of heat are released per 1,0 kg of oxygen consumed. Optionally, additional measurements of carbon dioxide and carbon monoxide can be made and used in calculation of heat release. The apparatus procedures and calculation methods described in Annex C are then applicable.
Specimens are exposed in ambient air conditions, while being subjected to an irradiance of 50 kW.m-2 in the presence of a spark ignition source. Alternatively, testing may be conducted at an exposure of 75 kW.m-2. The changes in oxygen, 02, concentration of gases and exhaust gas mass flow rate are monitored and, from these data, the heat release is calculated. Additionally, the time to sustained flaming is observed and mass-loss rate is measured.
In this document, the heat release is measured from the moment the specimen is subjected to the radiant thermal exposure of a conical heater and is continued for 20 min. The primary measurements are oxygen concentration and exhaust-gas mass flow rate. Provision is also made for the time to sustained flaming. This test method is used to evaluate specimens in a horizontal orientation under an
external irradiance.
In order to measure heat release of materials or products that produce low levels of heat release when exposed to high irradiances typical of fully developed fires, this part differs from ISO 5660-1 by prescribing a larger specimen size (150 mm × 150 mm), a 50 % lower exhaust gas volumetric flow rate, direct connection between the plenum and heater to ensure collection of all the combustion gases,more stringent specifications for the oxygen analyser to improve accuracy, and a specified irradiance level at which to conduct testing. This document is designed to test samples with peak heat release of <200 kW/m2 and total heat release of 0,75 MJ/m2 to 15 MJ/m2.
PMMA is typically used to check the general operation of a cone calorimeter in ISO 5660-1. PMMA shall not be used with this test method as the heat release rate is too high.ISO TS 5660-4 pdf free.