IEC 61892-1:2019 is available as IEC 61892-1:2019 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 61892-1:2019 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 – environmental conditions, – power supply characteristics, – location of electrical equipment in units, – protection against external influences, – protection against electrical shock, and – ignition source control. This document gives information and guidance on topics such as – cold climate protection, and – surface treatment and protective painting system. This document does not apply to – fixed equipment for medical purposes, – electrical installations of tankers, and – control of ignition sources other than those created by electrical equipment. This fourth edition cancels and replaces the third edition published in 2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) voltage limitations have been removed; b) definitions for fixed offshore units and mobile offshore units have been included; c) tables for ambient air temperature and relative h ...