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2. Functional requirements for PWR instrumentation
2.1 Neutron instrumentation functions
Nuclear instrumentation has two objectives that it must fulfill simultaneously:
the first is to measure the absolute power level, which is equivalent to measuring the overall neutron flux. In general, the unit is the fraction of nominal power or % PN ;
the second, as we've just seen, is the measurement of the 3D power (or flux) distribution inside the reactor. It is expressed in relative terms, i.e. with a dimensionless number.
Both types of measurement have their own accuracy and response time requirements, depending on how the corresponding signal is used.
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Functional requirements for PWR instrumentation
Description of equipment
Appendix – Description of treatments performed
(Mathematical development by Gérard RIO, Process Technical Development Department at Framatome - ANP)
Calculation of theoretical power distribution
We have already seen that we need to compare measured power (activity) and calculated power (activity) in instrumented assemblies.
Since the signal from fission detectors is proportional...
Research and development
RIC system :
— ATEA (Framatome subsidiary - ANP) (Courbevoie).
— Framatome - ANP (Paris-la-Défense).
Gamma thermometers :
— EDF-SEPTEN (Villeurbanne).
Lined collectors :
— CEA-CEN Cadarache (Saint-Paul-lès-Durance).
Golfech 2 experiment and...
The Ultimate Scientific and Technical Reference
