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1

Potential and Limits of OEE in the Total Productivity Management

Šajdlerová Ivana, Schindlerová Vladimíra, Kratochvíl Jiří

Advances in Science and Technology. Research Journal

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2020

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Vol. 14, no 2

19--26

EN

For years, management of companies has been turning to proven techniques and tools to achieve even higher productivity. They hope for, if possible, all-inclusive, easy and efficient procedures to manage their production systems. In principle, this applies to all organizations, regardless of the sector or the company focus. Especially in industrial enterprises with different machines and equipment for production processes, the quantitative indicator „Overall Equipment Effectiveness“ (OEE) has been used in recent years as a key indicator to monitor their efficiency and process performance. This indicator provides relatively simple information about the possibilities and utilization of machines and equipment as well as the quality achieved in the production processes. If the OEE indicator is determined correctly, based on the available and correct data in a system, processes can be better controlled, managed and improved. However, it is important to properly monitor (decode) the data and to understand them. The paper presents the potential but also the limits (obstacles) of Overall Equipment Effectiveness (OEE) on case studies in selected domestic enterprises in the Moravian-Silesian region.

2

Satellite navigation systems applications, the main utilization limits for maritime users

Januszewski J.

Zeszyty Naukowe / Akademia Morska w Szczecinie

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2013

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nr 36 (108) z. 1

70--75

EN

Nowadays (October 2013) information about ship’s position is obtained generally from specialized electronic positioning systems, in particular, at present functionally satellite navigation systems (SNS) as GPS and GLONASS, and satellite based augmentation systems (SBAS) as EGNOS, WAAS and MSAS. Two next SNS, Galileo and BeiDou, and two next SBAS, GAGAN and SDCM, are under construction. After all the user of these systems, the maritime user also, continually meets and will meet with numerous different limitations of SNS coverage in restricted area, SBAS and DGPS reference stations coverage area, the lack of integrity information about the systems, and of many charts referred to WGS–84 datum, with problem of position fix in restricted area, etc.

3

Granice detalu w architekturze

Michałek W.

Czasopismo Techniczne. Architektura

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2012

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R. 109, z. 5-A/2

400--404

PL

Nadużycie detalu lub jego nadmiar nie zabije całkiem architektury pod warunkiem, że jest w niej zakodowana wcześniej ponadczasowa idea.

EN

The misuse of detail or its excess will not 'kill' the Architecture completely provided that earlier timeless idea is coded in it.

4

Możliwości i ograniczenia prognozowania stanu technicznego i odnów urządzeń siłowni okrętowych

Lemski J.

Zeszyty Naukowe / Wyższa Szkoła Morska w Szczecinie

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2003

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nr 71

233-244

PL

Omówiono wybrane problemy prognozowania stanu urządzeń siłowni okrętowych, możliwości i ograniczenia prognozowania oraz modele procesu obsług. Przedstawiono metody prognozowania i wykonywania obsług oraz ocenę ich przydatności.

EN

The paper presents some problems of technical state prognostication of ship power plant objects, possibilities and limits of prognosticating and some models of service process. Prognostication methods, maintenance strategies and evaluation of their suitability have been presented.

5

Assessment of the explosion limits based on a kinetic steady-state criterion

Głowiński J., Tylus W., Piotrowski T.

Polish Journal of Applied Chemistry

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2003

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Vol. 47, nr 3

203-214

EN

Reached the steady-state values, a steady-state reaction was observed. When the steady-state values were not reached, the reaction proceeded with explosive rates. The values of the explosion pressure limits established with the use of the steady-state criterion were compared with the experimental values and with the values calculated from the condition of equality of chain-branching and chain-termination rates.

PL

Ciśnieniowe granice wybuchu stechiometrycznej mieszaniny wodoru z tlenem oceniano z wykorzystaniem kryterium stacjonarności zbudowanego dla atomów wodoru. Jeśli stężenie atomów wodoru osiąga swoje wartości stacjonarne to reakcja przebiega spokojnie. W przeciwnym przypadku spalanie zachodzi gwałtownie, w sposób wybuchowy. Uzyskane oceny granic wybuchu porównano z wartościami doświadczalnymi granic oraz z wartościami obliczonymi z warunku równości szybkości rozgałęziania łańcuchów i szybkości ich zaniku.

6

Radon levels in household waters in southern Poland

Kusyk M., Mamont-Ciesla K.

Nukleonika

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2002

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Vol. 47, nr 2

65-68

EN

Determination of radon concentrations in household waters were performed in 1997 in three regions of south-western Poland which are considered to have an enhanced natural radioactivity level: in the Jelenia Gora and Walbrzych regions (both in south-western Sudety Mountains) and in the Upper Silesian Coal Basin. Water samples were collected from taps, wells and springs and were analyzed in a liquid scintillation counter. In the Upper Silesian Coal Basin all values are below 50 Bq/dm3 with a maximum of 32 Bq/dm3 and in the Sudety Mts. the radon concentration in water exceed this level in 68% of houses, reaching a maximum value of ca. 1400 Bq/dm3 in drilled well water in the Jelenia Gora region. The annual ingestion dose calculated for this value equals to ca. 0.5 mSv for infants, 0.4 mSv for children and 0.3 mSv for adults. The average annual effective whole body doses calculated for tap water samples for a representative population in the investigated regions range from about 0.02 mSv to 0.32 mSv and the maximum value reaches 1.39 mSv. The inhalation doses corresponding to the unit of water-borne radon concentration are about one order higher than the ingestion ones for tap water supplies.