Ageing of thermal insulation materials. Determination of the long-term change in thermal resistance of closed-cell plastics (accelerated laboratory test methods) Ingestion-build-78747 in line with their objectives

in line with their objectives and available resources

All the requirements of ISO 15378 are generic and are intended to apply to any organization

BS EN ISO 11737 Part 1 specifies the requirements to be met in the determination of bioburden

BS EN 60156 guideline specifies the method for determining the dielectric breakdown voltage of insulating liquids at power frequency

chemical composition of the all-weld metal

Ageing of thermal insulation materials. Determination of the long-term change in thermal resistance of closed-cell plastics (accelerated laboratory test methods) Ingestion-build-78747 in line with their objectives1 Scope This International Standard specifies two laboratory test methods, based on slicing and scaling techniques, to determine the long term changes in the thermal resistance of closed cell (normally 90 %) cellular plastic materials that contain gases which, through diffusion processes, affect the properties of a foam with time. Using standard methods for the measurement of thermal resistance, method A consists of periodic measurements performed