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 BME NTI > Munkatársak > Dr. Légrády Dávid > Regular International Reactor Courses > Reactor phyisics skills

Reactor Physics Skills course

Nuclear Reactor Skill Course II.- Reactor physics skills

1)    Motivation

The “Nuclear Reactor Skill Course II. – Reactor physics skills” is a one week course focussing on the practical aspects of basic reactor related skills: making measurements in a reactor environment, verifying reactor parameters by direct measurements, operating a reactor thermal hydraulic system, measuring the flux, delayed neutron fraction and void effect.

2)    General data

Venue:                            Training Reactor, Budapest University of Technology and Economics (BME)

Total course duration: 5 working days

Course structure:          7 practical sessions (4 x 45 minutes each),

6 data evaluation/reporting/test sessions (2 x 45 minutes each)

Course Schedule:

  • Autumn semester: 2011.11.14-2011.11.19
  • Spring semester: 2012.03.26-2012.03.31

Number of Participants: 4 per group, minimum 1 full group required for course to start

Course fee: EUR2000 / person

Contact Person: Dr. David Legrady

3)    Course Contents

Practical session name

Session content keywords

Learning outcomes

Diffusion length

(4x45 minutes practical, 3x45 minutes data evaluation and reporting)

thermal neutron diffusion, graphite, open reactor tunnel, Dy-Al foils, Cd capsules, scintillation counter


  • measuring thermal and epithermal neutrons
  • identifying and correcting for parasite reactions at activation
  • safely conducting reactor measurements

Thermal neutron flux measurement

(4x45 minutes practical, 3x45 minutes data evaluation and reporting)

neutron activation, neutron cross section, neutron flux spectrum


  •           measurement of thermal neutrons through activation
  • determination of the thermal neutron spatial distribution
  • correction for self-shielding
  • working with activation and decay schemes

Delayed neutrons

(4x45 minutes practical, 3x45 minutes data evaluation and reporting)

point kinetics, He-3 neutron detectors, activation, pneumatic dispatch system


  • determination of delayed neutron parameters
  • determination of U content of a sample based on delayed fission
  • detecting fission neutrons with ionisation chambers 

Reactor operation and evaluation

(4x45 minutes practical, 3x45 minutes data evaluation and reporting)

reactor control rods, safety systems, thermal hydraulics checks, reactor SCRAM


  • identifying on-site the reactor structural constructional  and operational parts 
  • reading and interpreting control system displays
  • experimenting with control systems
  • intervene based on control system warnings
  • safely change reactor power level
  • safely shut down the reactor
  • safely inspect the reactor core state
  • testing nuclear measurement channels