"This part of IEC 61892 is applicable to electrical installations and equipment in mobile and fixed offshore units@ including pipeline@ pumping or ""pigging"" stations@ compressor stations and single buoy moorings@ used in the offshore petroleum industry for drilling@ production@ accommodation@ processing@ storage and offloading purposes. It applies to all installations@ whether permanent@ temporary@ transportable or hand-held@ to AC installations and DC installations without any voltage level limitation. Referenced equipment standards may give voltage level limitations. This document specifies requirements such as those concerning ?C environmental conditions@ ?C power supply characteristics@ ?C location of electrical equipment in units@ ?C protection against external influences@ ?C protection against electrical shock@ and ?C ignition source control. This document gives information and guidance on topics such as ?C cold climate protection@ and ?C surface treatment and protective painting system. This document does not apply to ?C fixed equipment for medical purposes@ ?C electrical installations of tankers@ and ?C control of ignition sources other than those created by electrical equipment. NOTE 1 For medical rooms@ IEC 60364-7-710 provides specific requirements. Requirements for tankers are given in IEC 60092-502. NOTE 2 Guidance on protection of non-electrical equipment can be found in ISO 80079-36@ ISO 80079-37 and IMO 2009 MODU Code@ 6.7."