Hazard identification risk assessment and determining control for seismic aspects on site evaluation the nuclear power plant in West Kalimantan

The safety element is a high priority in every stage of implementing the construction of a Nuclear Power Plant (NPP) in West Kalimantan. So, a risk assessment study related to Occupational Safety and Health (K3) is needed. The seismic aspect is one of the nuclear power plant site evaluations. The scope includes the investigation stage of the regional area, near region, around the site (site vicinity), and site area following the Head of BAPETEN Regulation Number 8 of 2013 concerning Evaluation of Nuclear Installation Sites for Seismic Aspects. Therefore, it is necessary to conduct a risk assessment of the seismic aspect to determine the value of the quantity of risk based on the consideration of the frequency of activities, the opportunities for risk occurrence, and the impact caused by the activities of the nuclear power plant aspect, especially the seismic aspect. The method in carrying out this risk assessment by collecting primary data from field verification using a quantitative method refers to a risk assessment based on BATAN Standard 006.1:2019 to support the implementation of the Occupational Health and Safety Management System. The results showed the identification of the seismic aspect hazards, including ergonomic hazards, mechanical hazards, chemical hazards, and biological hazards due to the sources of hazards caused during the preparation process, the field review process, and making reports on seismic aspects of activities. Hazards that have been identified are analyzed to determine the value of the scale of the quantity of probability (P) and the scale of consequences (K) that may arise from these hazards. Classification of risk assessment from the multiplication of the value of the opportunity scale which is determined based on the nature of the event, and the frequency of occurrence with the scale of consequences. From the results of these calculations, the risk rating of the seismic aspect is in category A with a risk scale of 2 so that the risk is still acceptable and the control measures are considered effective.