The use of a formalized safety assessment for marine ammonia refrigeration units

Abstract

When using risk-based methods, it is often necessary to take into account the factors of interaction between personnel and surveillance objects. During the analysis of the causes of accidents on ships equipped with ammonia refrigeration units, a qualimetric model was developed to carry out a formal assessment of the safety of ammonia refrigeration units. The model for assessing the impact of various parameters on overall safety was based on the weight coefficients of various hazards, the value of which was determined based on the analysis of accidents on ships with such installations. As a result, a system of indicators was recommended to assess the level of risk and potential consequences of accidents. The methodology has been successfully tested in practice on more than 40 vessels that have been inspected by the FAI Russian Maritime Register of Shipping, which confirmed its reliability and compliance with international standards established by the International Maritime Organization. Most importantly, the authors concluded that further application of qualimetry methods is necessary to improve and implement formalized safety assessments of complex systems and hazardous production facilities. Thus, the article emphasizes the importance of a formalized safety assessment as a tool for improving the level of safety.