The issues of improving the system of environmental management on the basis of knowledge management, risk-based approach, environmental monitoring are covered in the article. As a result of the carried out researches the algorithm of improvement of system of ecological management is developed. The model of improvement of ecological monitoring is offered. Practical recommendations for improving environmental safety and placing points of observation of the state of the environment are presented.

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The issues of improving the quality of measurements on the basis of ensuring digital traceability of measuring information for measuring the volumetric flow rate of liquid on the example of water meters are investigated. The main technical and metrological characteristics of portable calibration facilities were considered. Comparative analysis of portable installations by differential and complex methods was carried out. New requirements for measuring equipment are substantiated. Based on the use of information technology, a model for ensuring the traceability of measuring information when checking water meters was developed.

The issues of metrological reliability of measuring items are investigated. The conceptual terminology of the theory of reliability is analyzed in relation to measuring items. The regulatory and technical requirements for the reliability of measuring items are considered. The classification of failures of measuring items is carried out. A model is constructed in the form of a tree diagram that characterizes the properties and indicators of the reliability of measuring items. The necessity of standardization of regulatory and technical requirements for the metrological reliability of measuring items is substantiated.

The issues of quality management at the enterprise of the machine-building industry are studied on the basis of process and risk-oriented approaches. A comprehensive approach to risk assessment is proposed, the advantage of which is the application of the principle of matching the significance of risk and the costs of its elimination in a comparative risk assessment. The features of the application of the method of analyzing the causes and consequences of failures, calculating the priority number of risks based on expert and statistical data are analyzed. The method of risk assessment is shown on the example of the process “Metrological examination of technical documentation”. On the basis of statistical data on the results of metrological examination of technical documentation and the classifier of typical metrological errors, scales for calculating the priority number of risks were developed and an analysis of the causes and consequences of process failures was carried out. The approach to improving the quality of the process is justified on the basis of the principle of matching the priority number of risks and costs for eliminating the discrepancy. Based on a comparative risk assessment by constructing a map of the ratio of the priority number of risks by function and the costs of their elimination, the most significant risks that significantly affect the results of the process are identified.