There are around 2000 radiation workers in the country who work in medicine (radiologists, radiotherapists, oncologists, etc.), industry (radiographers, irradiator operators, NDT personnel, etc.) and other research fields. According to the national and international guidelines, it is mandatory to provide monitoring services to the radiation workers to ensure their safety and wellbeing.

The personal monitoring service is provided through external dosimetry measurements using Thermo-Luminescence Dosimeters (TLD), a passive radiation-sensitive material in a wearable casing. The main focus is being given to the whole-body dose (radiation dose received by the tissues in 10 mm depth from the surface of the skin). Additionally, eye dosimeters (for eyes) and finger dosimeters (for hands) are also available on request. These extremity dosimeters are
recommended for the workers in particular practices where high-active or open radiation sources are used (nuclear medicine and interventional radiology).

The monitoring service is offered by the Personal Monitoring Service Laboratory (PMSL) of SLAEB. The laboratory and the process have been accredited by Sri Lanka Accreditation Board (SLAB) to be compatible with the ISO/IEC 17025:2017 standards. As an effort to maintain the quality of service, the process undergoes rigorous routine audits, both internal and external. The external assessments are being conducted as verification tests with IAEA accreditation laboratories

The PMS is developing an internal monitoring program for radiation exposure with the assistance of IAEA. The purpose of internal monitoring is to assess the exposure from radioactive material intake, either by inhalation or digestion.