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Update: 2021-07-01
Task „Implementation of procedures ensuring the originality of scientific papers published in the quarterly „Eksploatacja i Niezawodność – Maintenance and Reliability” financed under contract 532/P-DUN/2018 from the funds of the Minister of Science and Higher Education for science dissemination activities.
Przemysław Drożyner
Maintenance of vehicles, machines and equipment in view of the ISO9001 requirements
Brak streszczenia w języku polskim (artyuł jedynie w wersji anglojęzycznej).
Assessment of the effectiveness of machine and device operation
Brak streszczenia w języku polskim
Assessment of the effectiveness of machine and device operation
In effectively managed companies, the answer to the question of whether employees should be perceived as cost or as investment, is obvious. Investment should be made in human resources as this allows for reducing the cost of company's activities, increasing its effectiveness, efficiency, etc. A similar question can be put for machine operation, but here the answer is not so straightforward. The conflict between production managers and machine maintenance managers still exists; it is usually settled with the production side winning. This paper is an attempt to assess the effectiveness of machine operation and the effectiveness of the whole company based on an analysis of so called OEE (Overall Equipment Effectiveness) index, calculated from a timekeeping study of a big food producing company.
Maintenance of vehicles, machines and equipment in view of the ISO9001 requirements
The paper describes the ISO 9001;2001 requirements related to machine operation. These are general requirements concerning the process-related approach, infrastructure, staff competence and product execution. Examples of real life approaches to the issue are presented.
Physical and reliability aspects of high-pressure ammonia water pipeline failures
The paper concerns the problem of the occurrence of failures of the high-pressure ammonia water pipeline of the coke oven battery complex, which is affected by chemical and thermal factors as well as the operating pressure occurring during its use. Pipeline failures manifested themselves as leaks (leakage of the medium) due to cracks in the area of the pipeline thermal elongation compensators. The conducted tests included, among others: visual inspection, penetration tests, macroscopic and microscopic tests as well as chemical analysis of the material. The study includes microscopic photographs of the material structure and cracks. The results of the pipeline strength and reliability analysis were also presented. On the basis of the conducted research and analyses conclusions were formulated. The assumed cause of the damage was the incorrectly made welded joints. Formulated recommendations and proposals for actions aimed at avoiding further failures of this and similar pipelines were related to the inspection time and preventive renewal.