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Актуальные проблемы авиации и космонавтики - 2021. Том 2
УДК 338.984
THE IMPROVEMENT OF THE PROCESS OF VERIFICATION (CALIBRATION) OF
LINEAR-ANGULAR MEASURING INSTRUMENTS BASED ON FMEA ANALYSIS
Ju. G. Malakhova, S. P. Zmanovskaia
Reshetnev Siberian State University of Science and Technology 31, Krasnoyarskii rabochii prospekt, Krasnoyarsk, 660037, Russian Federation E-mail: malahova_u@mail.ru
Discusses current issues of applying a risk-based approach to the verification process (calibration) at a machine-building enterprise, and also presents the results of an FMEA analysis due to the realisation the verification process (calibration) of linear-angular measuring instruments.
Keywords: risk-based approach, FMEA analysis, linear-angular measuring instruments.
СОВЕРШЕНСТВОВАНИЕ ПРОЦЕССА ПОВЕРКИ (КАЛИБРОВКИ) ЛИНЕЙНО-УГЛОВЫХ СРЕДСТВ ИЗМЕРЕНИЙ НА ОСНОВЕ FMEA-АНАЛИЗА
Ю.Г. Малахова, С. П. Змановская
Сибирский государственный университет науки и технологий имени академика М.Ф. Решетнева Российская Федерация, 660037, г. Красноярск, просп. им. газ. «Красноярский рабочий», 31
E-mail: malahova_u@mail.ru
Рассмотрены актуальные вопросы применения риск-ориентированного подхода к процессу поверки (калибровки) на машиностроительном предприятии, а также приведены результаты FMEA-анализа при реализации процесса поверки (калибровки) линейно-угловых средств измерений.
Ключевые слова: риск-ориентированный подход, FMEA-анализ, линейно-угловые средства измерения
To ensure the implementation of the established requirements for the creation, production and operation of rocket and space technology (RST), it is necessary to improve the existing quality management system (QMS) by implementing a risk-based approach in accordance with the requirements of GOST R ISO 9001-2015 "Quality management systems. Requirements". This means that the organization must first identify and assess the risks, and then develop and implement measures to manage them.
The activity of any engineering event is associated with risks that may arise throughout the entire life cycle. No machine-building enterprise is immune from the occurrence of risks, such as equipment downtime, errors in technical documentation, loss of working time, lack of the necessary amount of raw materials, an increased percentage of defective products, the risk of equipment wear, failure of measuring equipment and obtaining unreliable measurement results. Establishing the concept of risk-based thinking is a new requirement of GOST R ISO 9001-2015, so the work aimed at developing measures to minimize the degree of risk impact and eliminate it is relevant [1].
In the knowledge-intensive industries of machine-building, instrument-making, aerospace, defense and other industries based on high technologies, it is important to provide a fundamentally new level of operational performance of manufactured products. In such industries, a large number
Секция «Метрология, стандартизация и сертификация»
of parts are produced, the geometry of which is determined by their functional purpose. The measurement accuracy of some of them reaches the proportion of a micrometer and can be provided with one hundred percent machine control. In this regard, the process of calibration/verification of measuring instruments (MI) is of first-rate importance.
The object of the study is the process of calibration/verification of linear-angular measuring instruments.The purpose of this work is to apply a risk-based approach to the process of "Verification (calibration) of measuring instruments" of a machine-building enterprise based on FMEA analysis.
The FMEA analysis starts with the definition of subprocesses, the correctness of which most strongly affects the quality of the verification process (calibration) of linear-angular MI as a whole: 1) preparation of the schedule of verification (calibration); 2) preparation of working standards and auxiliary measuring instruments; 3) verification (calibration); 4) registration of the results of verification (calibration) and registration of the results [2].
The analysis of these subprocesses revealed possible types of inconsistencies: 1) the schedule of verification (calibration) is not approved; 2) violation of the terms of preparation of the schedule of verification (calibration); 3) lack of a standard for verification( calibration); 4) failure of the MI from the unit on time; 5) the supply of the MI in a non-working state; 6) use of an unverified standard 7) malfunction/absence of an auxiliary MI or substance; 8) environmental conditions do not meet the established requirements; 9) lack of working instructions; 10) the results of verification (calibration) are not registered on time); 11) incorrect registration of the results of verification (calibration).
At the next stage of the work, the main risks, their causes and consequences were identified for each subprocess. Next, an FMEA analysis of the process "Verification (calibration) of linear-angular measuring instruments" was carried out using 3 indicators. The quantitative measurement of the factors S (error significance), O (error probability) and D (error detection probability) was performed using qualimetric scales based on the data of the machine-building enterprise and the literature review. For the qualified determination of the above factors, an analytical group was formed, which included specialists who are competent in this field of professional activity.
The priority risk number (RR) had been counted by the formula [3]:
RR=S *D *O. (1)
As a result of the FMEA analysis, it was revealed that the main factors affecting the inconsistency of the verification process (calibration) of linear-angular MI are the inattention of the performers and their insufficient qualifications. The highest value of IFR=90 was obtained at the stage of MI submission for calibration/verification from the unit in the non-operational state. To reduce the likelihood of risks at this stage, the FMEA team had been asked to develop an organization standard that establishes the procedure for preparing and sending MI in departments for calibration/verification.
References
1. Red'ko L. A., YAnushevskaya M. N. [Risk analysis of the process «cooking eggs»]. Metody menedzhmenta kachestva. 2018, No. 5, p. 8-14 (In Russ.).
2. Rudzey G. F., Babets D. A. [Experience of applying FMEA]. ZHeleznodorozhnyy transport. 2013, No. 8, p. 34 (In Russ.).
3. Vasil'kov YU. V., Gushchina L. S. [Recommendations for the development of a standard methodology for risk analysis]. Metody menedzhmenta kachestva. 2017, No. 3, p. 27-33 (In Russ.).
© Малахова Ю.Г., Змановская С.П., 2021
