Updating Safety Guides in the Field of Accident Risk Assessment at the Production Facilities

Changes in the legislation in the field of industrial safety, as well as the experience of declaring industrial safety, developing safety cases for hazardous production facilities and other work related to risk analysis (assessment), required introduction of changes to the set of Rostechnadzor safety guidelines, most of which were developed in the period of 2013–2018. For this purpose, in agreement with Rosteсhnadzor, the specialists from the Group of Companies «Industrial Safety» (STC IS), STC «Industrial Safety» CJSC, ANO «Industrial Risk Research Agency», Fund of James Bruce) on a voluntary basis in the period of 2020–2022 prepared and sent to Rostechnadzor the drafts of amendments of 13 safety guides, which are currently approved. The article presents a classification of the above safety guides by content and considers a set of methods for accident risk analyses. The changes are presented in these guides related to the legal requirements for terminology, the need to make the set of safety guides more systematic. The algorithms for calculating risk indicators and affected areas were refined, the most significant of which can be distinguished: taking into account the variable clutter at the location of the fuel-air mixtures cloud, proceeding from the modern ideas about the assessment of the explosion consequences; including in the calculation of explosion parameters a model of computational gas dynamics, as well as the model designed for numerical simulation in the ejection of the jet section of the flow; actualization of the parametric models for calculating the effects of shock wave propagation in a physical explosion. The main directions are proposed concerning further improvement of the methodological support of risk analysis at the hazardous production facilities.