CEI IEC 62303 PDF

Scope and object

This International Standard is applicable to equipment used for sampling and continuous measurement of tritium in the workplace, in gaseous effluents discharged into the environment as well as in the environment itself and it is applicable to installed, portable and transportable equipment.

The object of this International Standard is to establish mandatory general requirements and to present examples of acceptable methods and equipment for continuously monitoring and/or sampling airborne tritium. The current standard IEC 60761-5 which is complemented by this standard, is applicable to equipment for sampling and monitoring tritium only in gaseous effluents, while this standard expands coverage to include monitoring all possible locations where tritium could present a radiological hazard. The equipment is designed to be in operation during normal operation conditions as well as under emergency conditions, both during and following an accident. Depending of the emergency conditions, it might be necessary to install specially designed equipment for normal operation conditions and other equipment for emergency conditions.

This International Standard is applicable to tritium samplers and tritium monitors intended to provide the following functions:

– the measurement of the volumetric activity of tritium and its variation with time in the workplace, in gaseous effluents at the discharge point and in the environment;

– the actuation of an alarm when a predetermined volumetric tritium activity or tritium concentration or a predetermined total activity of released tritium is exceeded;

– the determination of the total tritium activity discharged over a given time;

– the sampling and analysis of air or gas containing tritium.

This standard specifies the general characteristics, general testing procedures, mechanical, electrical and electronic, radiological, safety and environmental characteristics, and the proper identification and certification of the equipment. If this equipment is part of a centralized system for continuous radiation monitoring in a nuclear facility, there may be additional requirements from other standards related to those systems.