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termination compartment
                                             non-hazardous area
                      MEB



                                                                              LPZ 1
                                                                             or higher
           DNO



                telecontrol/
                telecommunication

           Ex i  measuring and control equipment


           CCP

           CCP


                           heater

                       EXFS                   control room
                                               Ex zone 1, 2
           gas




                                    foundation earth electrode                    external LPS

       Figure 9.33.6   Lightning equipotential bonding for incoming lines


























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