Study of Dose Constraint Value (DCV) for the Radiometallurgy Installation (RMI) Using the Quartile Method

The determination of the Dose Constraint Value (DCV) is central in optimizing radiation protection according to criteria set by the nuclear facility licensee. This is based on the ALARA (As Low As Reasonably Achievable) concept, emphasizing minimizing radiation exposure to workers and the general public, considering economic and social factors. The International Commission on Radiological Protection (ICRP) advocates the use of dose limiters to support the development of effective radiation protection. The objective of this study is to determine the DCV for the Radiometallurgy Installation (RMI) through the use of the quartile method. Dose values achieved between 2018 and 2021 were listed from lowest to highest. The DCV was calculated using the mean value of the dose and the standard deviation. The calculation resulted in a DCV of 14.25 mSv with a standard deviation (SD) of 2.655 µSv. The maximum DCV found in the current study was 16.905 mSv. According to the Nuclear Energy Regulatory Agency of Indonesia, the resulting DCV is acceptable, as it is below the regulatory level of 20 mSv/year. This indicates that the level of radiation exposure is being effectively controlled. The determined DCV serves as a reflective measurement of efforts to maintain radiation protection and safety in the RMI. It demonstrates the commitment of nuclear facility licensee to adhere to radiation safety regulations in nuclear energy operations.