British Standards Institution

Radiation protection instrumentation  Alpha, beta and alpha/beta (beta energy > 60 keV) contamination meters and monitors
 N BS EN 60325

Annotation

Scope and object

This International Standard is applicable to radiation meters and monitors designed for the direct measurement or the direct detection of surface contamination by alpha and/or beta radiation emitting nuclides and which comprise at least:

– a detection assembly (comprising text deleted counter tube, scintillation detector or semiconductor detector, etc), which may be connected either rigidly or by means of a flexible cable or incorporated into a single assembly.

– a measurement assembly.

Some meters and monitors consist of detection assemblies and measurement assemblies where it is possible to separate the detector assembly and use alternative detection assemblies. Conformity with the standard can either be achieved by:

All combinations of the detection assembly and the measurement assembly conforming to the requirements of this standard.

or

The detection assembly and the measurement assembly separately conforming to the relevant parts of this standard in isolation.

NOTE The use of the latter criteria verifies conformance with this standard but does not infer that calibration of a particular combination of instruments is interchangeable with any other combination.

The use of the latter criteria could allow a purchaser to use combinations of assemblies from different manufacturers with confidence.