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Dosimetry

Reliable partner for dosimetry

For more than 50 years already, SCK CEN is a reliable, high-quality dosimetry partner.

Our customers from Belgium and abroad can count on:

  • Our dosimeters perform accurate measurements and our specialists meticulously monitor the measurement results. If a dose limit is exceeded, SCK CEN immediately alerts the customer.

  • All current dosimeter subscriptions are managed and registered in an online platform. Customers can at all times consult their data online, adjust data, add new and delete former employees, apply for extra dosimeters...

  • Since 2014, the dose data of personnel must be sent electronically to the Federal Agency for Nuclear Control (FANC). SCK CEN helps to draw up the required documents or tables for the reports to this government agency.

SCK CEN - Dosimeter Inlight (2019)

Personal dosimetry and ambient dosimetry

SCK CEN listens to your needs and requirements and adapts the choice of dosimeter to them. The research centre acts as your partner in three areas: personal dosimetry, ambient dosimetry and reactor dosimetry.
Learn more about our dosimetry services
SCK CEN - Dosimetrie (2019)

Reactor dosimetry

The purpose of reactor dosimetry is to determine neutron fluxes. In this process, the total distance travelled by all free neutrons in a given time period and volume and in different situations is calibrated. One of the most common techniques for this is the ‘neutron activation technique’. To this end, the monitoring capsules in nuclear reactors are usually equipped with activation wires or foils (dosimeters). After an irradiation, the neutron flux to which the capsule was exposed can then be established on the basis of the measured dosimeter activity.

Examples of our standard solutions:

  • Determination of the neutron induced gamma- (or X-ray) activity of dosimeters or samples.
  • Determination of the neutron flux and fluence at the dosimeter or sample position.
  • Design and composition of neutron dosimetry sets for experiments and for reactor pressure vessel surveillance programmes.
  • Irradiations in neutron standard fields in the BR1 reactor.
  • Consultancy and services for retrospective reactor dosimetry and for research and reactor experiments.

Our infrastructure

Our infrastructure is equipped with high-purity germanium detectors used for gamma and X-ray spectrometry measurements at high resolutions.

In order to increase the laboratory efficiency, a fully automated detection system has been developed. This is a stand-alone system operated with in-house developed, validated software and has a sample changer in which up to thirty dosimeters can be loaded.

In addition to the six germanium detectors, the laboratory is equipped with:

  • a glove box
  • a fume hood
  • precision balances
  • a separate dosimeter preparation and weighing room

Accreditation

Thanks to the many R&D activities and services offered by it for many years already, SCK CEN has comprehensive experience in the field of reactor dosimetry. The reactor dosimetry laboratory received its first accreditation in 1998.

Today, SCK CEN's reactor dosimetry services has been accredited by BELAC (Ministry of Economic Affairs) under the accreditation number 015-TEST, norms NBN EN ISO/IEC 17025, for the following measurements:

ASTM E181

Standard Test Methods for Detector Calibration and Analysis of Radionuclides

ASTM E261

Standard Practice for Determining Neutron Fluence Rate, Fluence, and Spectra by Radioactivation Techniques

ASTM E262

Standard Test Method for Determining Thermal Neutron Reaction and Fluence Rates by Radioactivation Techniques

ASTM E263

Standard Test Methods for Measuring Fast-Neutron Reaction Rates by Radioactivation of Iron

ASTM E264

Standard Test Methods for Measuring Fast-Neutron Reaction Rates by Radioactivation of Nickel

ASTM E523

Standard Test Methods for Measuring Fast-Neutron Reaction Rates by Radioactivation of Copper

ASTM E526

Standard Test Methods for Measuring Fast-Neutron Reaction Rates by Radioactivation of Titanium

ASTM E704

Standard Test Methods for Measuring Reaction Rates by Radioactivation of Uranium-238

ASTM E705

Standard Test Methods for Measuring Reaction Rates by Radioactivation of Neptunium-237

ASTM E1005

Standard Test Method for Application and Analysis of Radiometric Monitors for Reactor Vessel Surveillance

ASTM E1297

Standard Test Methods for Measuring Fast-Neutron Reaction Rates by Radioactivation of Niobium

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