ISO 5660‑5 is the fifth part of a series of documents on reaction-to-fire tests. ISO 5660‑5 specifies the apparatus and procedure for measuring reaction to fire behaviour under reduced oxygen atmospheres. Continuous measurements are made to calculate heat release rates, smoke and specific gas production rates, and mass-loss rates. Ignition time measurements are also made and ignition behaviour is obtained. Pyrolysis parameters of specimens exposed to controlled levels of irradiance and controlled levels of oxygen supply can be determined as well.
Different reduced oxygen atmospheres in the test environment are achieved by controlling the oxygen volume concentration of input gas fed into the chamber (vitiation) or by controlling the total volume of atmosphere fed into the chamber (ventilation). Ranges of oxygen volume concentration below 20,95 % of oxygen can be studied. The apparatus is not intended to control enriched oxygen conditions above atmospheric 20,95 % oxygen concentration.
The measurement system prescribed in ISO 5660‑5 is based on the cone calorimeter apparatus described in ISO 5660-1. Therefore, ISO 5660‑5 is intended to be used in conjunction with ISO 5660-1.
ISO 5660‑5 on reaction to fire tests is relevant to:
A calorimeter is a fire testing tool used for calorimetry or the process of measuring heat and fire behaviour.
ISO 5660‑5 provide information on apparatus, heater and enclosure and chimney arrangement with cone calorimeter, suitability of the product for testing, specimen construction and preparation, test environment, test procedure, calculations, and test report of fire behaviour under reduced oxygen atmospheres.
As a user of ISO 5660‑5, you can efficiently calculate heat release rates, smoke and specific gas production rates, and mass-loss rates. ISO 5660‑5 helps the user to gain knowledge on cone calorimeter in determining the fire behaviour and can help the user to understand fire and fight it or control it properly.
ISO 5660-5