Key elements to consider when developing electrical equipment isolation and switching procedures

Electrical equipment isolation or switching can be relatively straightforward or extremely complicated depending upon the complexity of the electrical distribution system. Regardless of its size or number of switching steps involved, switching should be done following a written switching order or procedure. Planning switching operations provides the opportunity to consciously address all aspects of the work in a way that incorporates the appropriate personnel and their experience as well as consideration of the risks associated with the switching operation and their mitigation. This paper discusses the successful approach of developing and executing the electrical equipment switching procedures at two major petro-chemical organizations.