1DV.1 DR Modification ofClause 1 to replace with the following:
1DV.1.1 DR This part of IEC 60079 standard specifies the requirements, testing and marking of equipment emitting optical radiation intended for use in explosive atmospheres. It also covers equipment located outside the explosive atmosphere or protected by a Type of Protection listed in IEC UL 60079-0, but which generates optical radiation that is intended to enter an explosive atmosphere. It covers Groups I, II and III,and EPLs Ga, Gb, Gc, Da, Db, Dc, Ma and Mb.
