移动和固定海上单位 - 电气安装 - 第7部分:危险区域

[中文适用范围]： 本部分 IEC 61892 规定了移动式和固定式海上单元（包括管道、泵或清管站、压缩机站和单点系泊设施）在海上石油工业中用于钻井、生产、住宿、加工、存储和卸货时，在危险区域进行危险区域分类和电气设备选择及安装的要求。它适用于所有永久性、临时性、可运输或个人设备，适用于交流（AC）和直流（DC）安装，无任何电压等级限制。参考设备标准可能给出电压等级限制。本文档基于 IEC 技术委员会 31 制定的关于危险区域分类和危险区域安装要求的国际标准，并给出了移动式和固定式海上单元安装的额外要求。 [外文原描述]： IEC 61892-7:2019 provides requirements for hazardous area classification and selection of electrical equipment and installation in hazardous areas 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 personal, to AC installations and DC installations without any voltage level limitation. Referenced equipment standards may give voltage level limitations. This document is based on the requirements of International Standards developed by IEC TC 31 regarding area classification and requirements as to installations in hazardous areas and gives additional requirements for installations on mobile and fixed offshore units. This document specifies requirements such as those concerning – area classification, – electrical systems, – selection of electrical equipment, – cables and wiring systems, – ventilation, – ventilation requirement for battery compartments, and – inspection, maintenance, repair and overhaul. This document gives information on topics such as – gas detection systems, and – electrical installations in extremely low ambient temperatures. 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 2014. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) the document has been completely rewritten. References are, to the extent possible, made to IEC 60079-14 and to other relevant standards, as appropriate, from IEC TC 31; only requirements concerning offshore installations that deviate from the general requirements for installations in hazardous areas are given; b) requirements as to gas detection have been transferred to an informative annex; c) requirements concerning emergency shutdown (ignition source control) have been transferred to IEC 61892-1.