scope:

This International Standard defines the intended criteria for the choice, conception and use of equipment for the measurement of the response time of resistance temperature detectors (RTD) which are used in the safety and control systems of nuclear reactors.

The object of this standard is to describe the techniques which can be used for the in situ measurement of RTD response time.

These techniques are recommended only when specific tests performed on loops or physical analysis have shown significant possibilities of drift in the response time.