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RISKS INDUCED BY IMPROPER INSTALLATION AND MAINTENANCE OF EQUIPMENT INTENDED FOR OPERATION IN POTENTIALLY EXPLOSIVE ENVIRONMENTS
Abstract
The installation and maintenance of equipment intended for use in potentially explosive environments requires specific knowledge and qualifications for the personnel who commissions and subsequently maintain such equipment. When installing and maintaining electrical equipment, situations may arise which may in turn lead to an unacceptable level of risk with regarding to the activation of ignition sources of potentially explosive atmospheres in their immediate vicinity, due to the failure to comply the principles of explosion protection. The principles of explosion protection differ from one type of equipment to another, and they can be combined, but only if the clearly defined principles in the specific literature are observed. There are also situations when two or more principles of protection are not compatible in ensuring a level of safety appropriate to the classification of the area endangered by the presence of a potentially explosive atmosphere. This paper presents real situations discovered by the authors in their assessment work, at different installations intended for operation in potentially explosive environments, with the highlighting of the nonconformities in each presented case.
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Directive 2014/34/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to equipment and protective systems intended for use in potentially explosive atmospheres
Directive 1999/92/EC of the European Parliament and of the Council of 16 December 1999 on minimum requirements for improving the safety and health protection of workers potentially at risk from explosive atmospheres, 1999
Standard EN 1127-1: 2019 - Explosive atmospheres. Explosion prevention and protection. Basic concepts and methodology, 2019
Standard EN 60079-0: Explosive atmospheres - Part 0: Equipment - General requirements, 2018
Standard EN IEC 60079-10-1:2021: Explosive atmospheres - Part 10-1: Classification of areas - Explosive gas atmospheres, 2021
Standard EN 60079-11 - Explosive atmospheres - Part 11: Equipment protection by intrinsic safety "i", 2012.
Standard SR EN 60079-14 - Explosive atmospheres - Part 14: Electrical installations design, selection and erection, 2014
Standard EN 60079-17 - Explosive atmospheres - Part 17: Electrical installations inspection and maintenance, 2014
Normativ NEx 01-06 - Normative on explosion prevention for design, erection, commissioning, use, repair and maintenance of technical installations operating in atmospheres potentially explosive atmospheres, 2007
Darie M., Burian C., Csaszar T., Colda C., Grecea D., Separation fault scenarios in intrinsic safety circuits, Environmental Engineering and Management Journal, Romania, 18 (4), pp 797-802, 2019 DOI: 10.30638/eemj.2019.074
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