Analisis Risiko Aktivitas Proyek Drainase di Kota Medan Menggunakan Metode HIRARC

Abstract

Drainage construction projects in urban areas such as Medan City are highly complex, as they not only concern occupational safety but also have direct impacts on the surrounding community and infrastructure. This study aims to identify potential hazards in the U-Ditch drainage project activities, assess the associated risks, and formulate mitigation strategies based on the Environmental Occupational Safety and Health Management System (SMK3L) using the Hazard Identification, Risk Assessment, and Risk Control (HIRARC) method. Data collection was carried out through field observations at three project sites: Jl. Ir. Juanda, Jl. Putri Merak Jingga, and Jl. Sunggal, distribution of questionnaires to 30 respondents consisting of workers and community members, and interviews with 10 drainage construction practitioners. The results of the study identified 22 hazard variables, with six dominant risks as follows: infrastructure damage (V22) with a risk value of 11 (16%), road function disruption (V21) with a risk value of 9 (12%), disruption of underground utilities (V7) with a risk value of 10 (14%), dust exposure (V17) with a risk value of 7 (10%), landslides due to excavation (V6) with a risk value of 6 (9%), and environmental pollution (V18) with a risk value of 6 (9%). Mitigation strategies focused on these six dominant risks through rapid infrastructure repair, coordination between relevant agencies, implementation of a traffic management plan, pre-construction surveys, and regular watering of the work area. The application of the HIRARC method proved effective in providing a quantitative risk assessment and generating practical mitigation strategies to enhance workplace safety and minimize the social and environmental impacts of urban drainage projects.