A 발전회사 “위험성평가 기법” 표준화 연구

Abstract

Sangduk Kim

Department of Safety Engineering Graduate School of Industry Pukyong National University

Abstract

In 1996, the Industrial Safety and Health Act was revised, the process safety management (PSM) system for the prevention of serious industrial accidents was legislated, and the risk assessment for processes related to hazardous substances became mandatory. The scope of the risk assessment was extended by the KOSHA18001 certification system - autonomous safety and health management system in KOREA - implemented in 1999, and all the domestic work places were obliged to carry out the risk assessment in 2014. Since the power plant contains a small amount of PSM substances, such as hydrogen and ammonia, it is necessary to conduct a process risk assessment. Depending on the type of work, risk assessment is carried out in the technical field and the office field. The technical field operates and maintains the power generation facilities, and the office works to support it. "A" Power Generation Company has business sites distributed in each country. It is difficult to make a relative comparison between risk factors and risk assessment results for each workplace and each work due to the different risk assessment techniques or procedures used for each workplace. Therefore, a standardized risk assessment system that can be applied to all work places is needed to prevent accidents and disasters. A standard system that can be easily accessed and utilized by all employees is required through the introduction of techniques appropriate to the type of work such as facility risk, job risk, and policy system risk. In this study, the problems and improvements of the power plant are found through the interviews of the safety personnel working at the "A" Power Generation Company and the case analysis of the excellent safety management organizations. In addition, by using the element-specific matrix technique, the risk assessment differences and improvement points of each workplace are derived. Through the SWOT method, eight tasks are selected: standardization of risk assessment techniques, simplification of risk assessment tasks, strengthening safety monitoring using Big data, and strengthening management of safety activity performance targets (Key Performance Indicators, KPIs). These eight tasks cover the overall improvement of the risk assessment task. Risk assessment methods, risk estimation, and standardization of risk criteria were selected as priority tasks through a preliminary questionnaire for safety personnel. Afterwards, the questionnaires were conducted for employees in charge of risk assessment at each workplace. Based on the results, the risk assessment method, the risk estimation standard and the standardization method for the risk determination standard suitable for the "A" Power Generation Company were derived in the Guideline for the Risk Assessment of the Workplace.

Key Words : thermal power plant, risk assessment, standardization.