Plastics. Methods of exposure to solar radiation - Intensified weathering using concentrated solar radiation1 Scope This document specifies a method for exposing plastics to concentrated solar radiation using reflecting concentrators to accelerate the weathering processes. The purpose is to assess property changes produced after specified stages of such exposures. The reflecting concentrators used in these exposures are sometimes referred to as Fresnel reflectors because in cross section the array of mirrors used to concentrate the solar radiation resembles

BS 7386 provides the seasonal movement of external doors made of wood and materials in housing

020 % to 0

a) cargo loaded and tied down onto airworthiness approved air cargo pallets

The assumption is that these devices will be used at conventional ranges of hypothermia and normothermia

System impairments (power penalty) due to PMD

3 – Iron and steel about

given in ISO/IEC 9646-1

the effect of moisture may be ignored

— storage

d) to judge test data according to specifications for bituminous mixtures

It is a type-test procedure for establishing the magnitude of vibration in the gripping areas of a machine run under specified test conditions

that I&HAS provide the required performance with a minimum of unwanted alarms