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The condition of work accident risk is a critical factor that needs to be taken seriously. Related to the construction of the Ciputra Hospital Project located on Jl. Made Selatan - Citraland Surabaya, the Ciputra Hospital project is planned to be built on nine floors with a building area of 23,000 m2, which will allow for various occupational accident risks. So, a risk analysis is needed to identify hazards that can occur. In this study, data collection was carried out through interviews and also distribution questionnaires. Questionnaires are used to find probability and severity scales, and questionnaires are distributed to project expert staff. After obtaining the results from the questionnaire, a risk assessment is carried out by finding the probability index and severity index and then determining the category with the risk matrix. After determining the category, the analysis was carried out using the bowtie method. The result of this study is to determine the most dominant risks, namely workers being punctured by sharp equipment when installing formwork, workers falling from a height when installing formwork, and workers being hit by a bar bender machine when forming. After analyzing using the bowtie method, it was found that the causes of the risk of accidents that occurred included workers in a tired condition, lack of concentration, and carelessness, incomplete use of PPE, undisciplined workers at work, no safety at the job site, bad weather, inexperienced workers, poor machine conditions.

The purpose of this study is to find out what are the most dominant work accidents, what are the impacts that occur from work accidents, as well as appropriate risk control adventures for work accidents due to 13 work accidents in 2021 to 2023 which cause a loss of 33 working hours day at PT Alis Jaya Ciptatama. The method used is the Hazard And Operability Study (HAZOP) method and Bowtie analysis to identify potential occupational safety and health hazards by limiting the probability criteria in quantitative and consequence calculations and analyzing the risk path from cause to consequence using a bowtie diagram. The results obtained are that the highest activity is in activity code 3b with an LI value of 38.3, then in the smallest activity code 2a with an LI value of 10. The risks that occur fall into the high, medium, and low severity categories, so the warning given What is given is to install machine guards and ensure the operator has qualified machine usage skills.

Work accidents that occur on ships often occur in various cases, one of which is a work accident that occurs in an enclosed space. This is often experienced by a crew member who is unable to understand the proper methods and procedures for working in an enclosed space. Against this background, the researcher conducted a risk assessment of personal safety when working in an enclosed space to find out the causes, impacts and controls of the crew members' lack of understanding and knowledge of personal safety when working in an enclosed space. In this descriptive study using the Job Safety Analysis (JSA) method and the Bowtie method, the researchers obtained very high/extreme (E) scores in carrying out work in closed spaces, namely the ship's crew inhaled poisoned air/gas while checking in the cofferdam tank where these results obtained an likelihood value of 66% and a severity value of 71%. By holding routine drills regarding the application of safety principles in an enclosed space in more detail to all Ship's Crew and at the end of the drill closing displays a training video that displays shows about various accidents that occurred in an enclosed space and the causes of these events are reviewed in detail. So with a more detailed drill on the application of safety principles regarding enclosed space material to all Ship's Crew, it is hoped that it can minimize the occurrence of work accidents in an enclosed space.