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The article presents a method for determining the performance level (PL) on the basis of the PN-EN ISO 13849-1 standard, which is harmonized with the machinery directive 2006/42/EC. The risk assessment and risk reduction criteria, according to PN-EN ISO 12100, were briefly characterized. The focus was put on determining the required performance level PLr on the basis of a risk graph. The method was presented how to use a safety function composed of input-, logical-and execution subsystems. It was demonstrated how to determine the achieved PL for a safety function composed of hardware elements on the basis of a safety category, mean time to dangerous failures (MTTFd), diagnostic coverage (DC), and immunity to common cause failures (CCF).


Habrych M.,Wroclaw University of Technology | Tomczyk A.,Wroclaw University of Technology | Beben B.,Wroclaw University of Technology | Miedzinski B.,Instytut Technik Innowacyjnych EMAG
Przeglad Elektrotechniczny | Year: 2015

Paper discusses basic principles of BPL-PLC transmission paying attention to the limits of its effectiveness in practice. The one of the practical ways of modeling of the transmission channel using an electric power line is presented. The implementation of the relevant exploratory study on the on the use of the BPL transmission in the existing mining cable networks of MV has been described. Based on the research results the appropriate practical conclusions have been formulated. © 2015, Wydawnictwo SIGMA - N O T Sp. z o.o. All rights reserved.


Bialas A.,Instytut Technik Innowacyjnych EMAG
Advances in Intelligent and Soft Computing | Year: 2012

The chapter features the concept of joint implementation of two widely used standards, BS 25999 concerning business continuity and ISO/IEC 27001 - information security, within one integrated management system. Business continuity is understood as a strategic ability of an organization to react to incidents and disturbances in its business functioning and to mitigate losses in case these harmful factors occur. Information security, in turn, is related to the protection of information integrity, availability and confidentiality. The chapter presents the assumptions and recently achieved results of a specific targeted project whose objective is to develop a computer-supported management system for organizations which set a lot of store by the continuity of business processes and information security. The works on the system model were summarized, including a feasibility study concerning different aspects of software which is developed on the basis of these models. © 2012 Springer-Verlag GmbH Berlin Heidelberg.


Wojcik D.,Silesian University of Technology | Mocha J.,Instytut techniki i Aparatury Medycznej ITAM | Woznica T.,Instytut Technik Innowacyjnych EMAG
Przeglad Elektrotechniczny | Year: 2015

The issues of reducing radiated emissions in the double-layer printed circuit board with digital magnetic isolators from Analog Devices are discussed in this article. The effectiveness of the chosen radiation mitigation techniques are examined. Results from measurement of the electric field carried in the GTEM chamber are presented. © 2015, Wydawnictwo SIGMA - N O T Sp. z o.o. All rights reserved.


Mocha J.,Instytut techniki i Aparatury Medycznej ITAM | Woznica T.,Instytut Technik Innowacyjnych EMAG | Wojcik D.,Silesian University of Technology
Przeglad Elektrotechniczny | Year: 2015

The paper presents briefly amendments which have been made to the IEC 60601-1-2:2014 standard as compared to its the previous revision. The paper outlines also the consequences that result from these amendments and affect designers of medical equipment and research laboratories. The study ends up with presentation of results from investigations carried out in line with the new revision of the IEC 60601-1-2:2014 standard and intended to detect which degree of immunity to radio frequency electromagnetic fields is achieved by typical electric medical devices. © 2015, Wydawnictwo SIGMA - N O T Sp. z o.o. All rights reserved.

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