Singapore legislation
Regulation 35
of Radiation Protection (Ionising Radiation) Regulations 2023
Regulation 35
Occupational exposure assessment
Subregulation 1
Every employer and licensee must make arrangements approved by the Director‑General for the assessment of the occupational exposure of employees and workers.
Subregulation 2
In complying with paragraph (1), every employer and licensee must determine if monitoring of the individual radiation dose is required for the assessment, and if so, must ensure that arrangements are made with approved dosimetry service providers.
Subregulation 3
It is the duty of every employee and worker to comply with the arrangements mentioned in paragraph (1).
Subregulation 4
For any employee or worker who usually works in a controlled area, or who occasionally works in a controlled area and may receive a significant dose from occupational exposure, monitoring of the individual radiation dose must be undertaken where feasible.
Subregulation 5
In cases where monitoring of the individual radiation dose is not feasible, the occupational exposure must be assessed on the basis of the results of workplace monitoring and information on the locations and duration of exposure of the employee or worker.
Subregulation 6
For any employee or worker who regularly works in a supervised area or who enters a controlled area only occasionally, the occupational exposure must be assessed on the basis of the results of workplace monitoring or of monitoring of the individual radiation dose, as appropriate.
Subregulation 7
Every employer must ensure that employees or workers who may be subject to exposure due to contamination are identified, including employees or workers who use respiratory protective equipment, and must arrange for monitoring to the extent that is necessary —
to demonstrate the effectiveness of the measures for protection and safety; and
to assess intakes of radionuclides and the committed effective doses.
Subregulation 8
Without limiting the other requirements of these Regulations, where the Director‑General has reasonable cause to believe an employee or a worker may have received, or is likely to receive, in any calendar year, a sum of radiation doses greater than three‑tenths of the appropriate dose limit specified in Part 1 of the Second Schedule, the Director‑General may issue to the licensee concerned or the employer concerned a written notice for the purposes set out in paragraph (9).
Subregulation 9
The written notice issued under paragraph (8) may require the licensee or employer to make arrangements approved by the Director‑General with respect to all or any of the following matters:
for the monitoring of any part of the installation, and for the keeping and preserving of records of measurements obtained by such monitoring;
for the suspension of any employee or worker from work in which he or she will be exposed to ionising radiations or for imposing special conditions on the employee’s or worker’s continued employment in any such work;
for the medical examination of any employee or worker.
Subregulation 10
Without limiting the other requirements of these Regulations, where the Director‑General has reasonable cause to believe that the ingestion of an excessive amount of a radionuclide by any employee or worker has taken place, or could potentially take place, the Director‑General may issue to the licensee concerned or the employer concerned a written notice for the purposes set out in paragraph (11).
Subregulation 11
The written notice issued under paragraph (10) may require the licensee or employer to make arrangements approved by the Director‑General with respect to all or any of the following matters:
for the monitoring of airborne radionuclides in any part of the installation, and for the keeping and preserving of records of measurements obtained by such monitoring;
for measurements to be made on the amount of radionuclides present in the body of any employee or worker, and for the keeping and preserving of the records of such measurements;
for the suspension of any radiation worker from work in which he or she will be exposed to ionising radiations, or for imposing special conditions on the radiation worker’s continued employment in any such work;
for the medical examination of any employee or worker.