Abstract
Process safety management (PSM) has been a critical consideration in the plants that handle highly hazardous chemicals (HHCs), flammable gases and liquids. This article introduces PSM standard by OSHA's 29 CFR 1910.119. Further, it highlights an effective PSM for HHCs and provides PSM practices of the industries in Thailand. Effective PSM can prevent or mitigate catastrophic releases of HHCs which can cause health problems, fires, explosions, and fatalities. It is a disciplined framework for managing the integrity of operating systems, safety critical equipment (SCE) and safe work practices. Effective implementation and audits of PSM system and the continual improvement are important. It requires the industries to execute suitable leading and lagging process safety metrics. The inclusive and integrated PSM intents, human factors, good design principles, recognized and generally accepted good engineering practices (RAGAGEPs), engineering and administrative controls, and integrity of operating and maintenance practices are substantial key roles. It is important that the PSM system should be risk-based under the ALARP concept because hazards and risks are not equal, and there are multiple risks and consequences to consider. In summary, the PSM effectiveness depends on, for example, process safety metrics, management review, audit findings and particularly workforce involvement.
Highlights
Process safety management (PSM) is a disciplined framework for managing the integrity of operating systems and processes handling hazardous substances by applying good design principles, engineering, and operating practices [1]
Construction and equipment are in accordance with design specifications; (2) safety, operating, maintenance, and emergency procedures are in place, adequate and functioning; (3) a PHA has been performed for new facilities and recommendations have been resolved or implemented before startup, the modified facilities meet the management of change requirements; and training of each employee involved in operating a process has been completed
Appropriate leading and lagging process safety metrics are recommended
Summary
Process safety management (PSM) is a disciplined framework for managing the integrity of operating systems and processes handling hazardous substances by applying good design principles, engineering, and operating practices [1]. Unlike the occupational safety or personal safety that emphasizes on the prevention and mitigation of hazards causing adverse effects on employees’ health and welfare such as slips, trips, and falls, process safety addresses on the prevention and mitigation of process hazards possibly resulting in the releases of chemicals or energy. Such hazards could result in serious impacts on human health, environmental damage, as well as loss of assets and production. The standard integrates 14 elements to prevent or minimize the hazards and consequences from toxic, flammable, highly reactive, and explosive substances [2] It applies to manufacturing industries, those pertaining to chemicals, transportation equipment, and fabricated metal products. Safety Management for Highly Hazardous Chemicals [3] and discusses what the effective PSM system should be
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