Every electrical maintenance program depends on accurate, complete and contemporary information. NFPA 70B calls out the single line diagram in Section 6.2.2. E.3, Typical Electrical Safety Program Procedures.340.5, Specific Measures for Personnel Safety.The incident energy analysis shall also be reviewed for accuracy at intervals not to exceed five years.” 130.5 (G), “The incident energy analysis shall be updated when changes occur in the electrical distribution system that could affect the results of the analysis. 120.5, Process for Establishing and Verifying an Electrically Safe Work Condition.Key sections of NFPA 70E that refer to the single line diagram include: They also specify the systems, safety and analysis procedures for electrical circuitry. They define what belongs in a single line diagram. Building management and emergency workers depend on the protections mandated. NFPA 70E, Standard for Electrical Safety in the WorkplaceĪll electrical systems in the U.S.NFPA 70B, Recommended Practice for Electrical Equipment Maintenance.The diagram includes all of the ratings and sizes of each piece of equipment. It includes circuit conductors and protective devices. It shows the distribution path from the power source to each piece of equipment. It includes all redundant and spare equipment in the system. The diagram includes the component devices or parts used in the circuit. These illustrate the course of an electric circuit or system of circuits. It uses single lines and graphic symbols. What Is a Single Line Diagram?Ī single line diagram is a roadmap of the main components of your electrical system. Your building single line diagram is a critical part of building safety. Often, electrical plans differ widely from the plans used at construction.Įmergency incident response depends on accurate information about the building and its hazards. Incomplete or inaccurate information about electrical systems can cause injury or death. Part of a good emergency response plan is an understanding of your building’s systems.Ĭurrent national electrical safety guidelines call for up-to-date information about your building’s electrical system. In fact, some local laws require more than one plan for different sorts of emergencies. Does your building have a good critical response plan? Every facility needs one.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |