Photography. Industrial radiographic films. Determination of ISO speed, ISO average gradient and ISO gradients G2 and G4 when exposed to X- and gamma-radiation shop-only The operation and design categories

The operation and design categories defined in DD CEN/TS 45545-1 are used to establish hazard levels that are used as the basis of a classification system

BS 8411:2007 provides essential guidance and recommendations on the safe use

• State timing

The central power supplies are intended to energize emergency escape lighting in the case of failure of the normal supply

Photography. Industrial radiographic films. Determination of ISO speed, ISO average gradient and ISO gradients G2 and G4 when exposed to X- and gamma-radiation shop-only The operation and design categories1 Scope This International Standard specifies methods for determining sensitometric curve shape, ISO speed, ISO average gradient and ISO gradientsG2 and G4 for industrial radiographic systems consisting of film and film processing when exposed directly to X rays and rays. The measurement of characteristics of film systems used in industrial radiography with fluorescent intensifying screens is not specified in this International Standard. NOTE Units of