The concept of the new approach is used in cases where diagnostic methods have determined that the basic explosion protection of an ldquoEEx erdquo motor has been undermined. Possible application, in special cases, of the mentioned motor with the application of additional safety systems, which is the new approach, is also analyzed. There is a specific example which illustrates the results of selection and application of motors with type of protection ldquoEEx erdquo without the application of additional safety systems, which is the traditional approach. Risk assessment of such applications, based on the requirements of ATEX Directive, is the main part of this paper. The application of motors with type of protection increased safety, marked as ldquoEEx erdquo, with and without associated safety systems, are analyzed for zone 2. In this paper the application of motors in plants at risk of explosive atmospheres, and the special requirements of such applications from the standpoint of explosion protection are considered.
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