石油和天然气行业 包括低碳能源-三级舾装结构

[中文适用范围]： 本文档为海上石油和天然气项目中三级结构的设计和建造提供统一参考。本文档涵盖固定或浮式海上项目的上部系统，不包含船级社要求。经相关利益方同意，也可适用于船体系统和陆上项目。本文档不提供船级社的规范要求。本文档提供对构件尺寸的要求，但不包括与其他结构的间隙要求。本文档涵盖以下三级舾装设计：栏杆、安全门、楼梯、螺旋楼梯、垂直梯、格栅、人孔、连接方式。 [外文原描述]： This document provides a uniform reference for tertiary structure items when a tertiary structure is designed and constructed in offshore oil and gas projects. This document covers topside systems for fixed or floating offshore projects not covered by class requirements. This document can be applicable for hull systems and onshore projects when there is consent from relevant stakeholders. This document does not provide class rules from classification societies. This document provides requirements on dimensions of the items but does not include requirements on clearances with other structures. The following tertiary outfitting designs for equipment items are covered in this document: — handrails; — safety gate; — stairs; — spiral stairs; — vertical ladder; — grating; — access hole (manhole); — connection method.