对流段脚手架搭设方案(史吏中).doc

1.简述General Description 上海赛科90万吨/年乙烯裂解炉H-0500~H-0900对流段钢结构及模块安装时需搭设脚手架。本方案以H-0600为例，详细说明对流段脚手架的搭设程序、方法、要求、用途，以保证脚手架的搭设质量和使用的安全性，为优质、安全、快速完成裂解炉对流段安装创造条件。It is necessary to erect scaffold during steel structure and module installation of convection section in cracker H-0500~H-0900 area of Shanghai SECCO 900kt/a Ethylene plant. This method statement takes H-0600 for example, describes scaffold erection procedure, method, requirement and usage in detail to ensure good quality and safety use, so as to be ready for installation of convection section with good quality, safety and high speed. 对流段安装高度为+18.598~+38.40m，脚手架由以下三部分组成：The installation height of convection section is +18.598~+38.40m. The scaffold is composed of three sections: （1）两台裂解炉对流段之间的脚手架；Scaffold between convection sections of two crackers; （2）辐射段顶部脚手架；Scaffold on top of radiant section; （3）汽包框架钢结构。Steel structure frame for steam drum. 具体部位详见附图1。因为吊装裂解炉的300t.m塔吊将占用2#楼梯间的位置，2#楼梯间暂时无法安装，所以这三个部分的脚手架暂时使用H-0500两侧或H-0800和H-0900之间的临时公用楼梯间。The location refers to attached drawing 1. Tower crane(300t.m) for lifting cracker will occupy 2# staircase, and the 2# staircase can not installed now, so that the temporary staircase for public usage on both sides of H-0500 or between H-0800 and H-0900 shall be used. 2.脚手架的搭设程序Scaffold erection procedure 熟悉图纸、方案和SECCO安全规程→察看现场，由脚手架工程师对施工班组进行技术交底→准备材料、机具→搭设汽包框架脚手架→搭设对流段模块间脚手架和辐射段顶部的脚手架→检查验收→使用→维护、检查Familiar with drawings, method statement and SECCO HSE regulations→survey on site, technical clarification to workers by scaffolding engineer→material, machinery and tools preparation→scaffold erection of frame for steam drum→scaffold erection between modules of convection section and on top of radiant section→inspection and acceptance→usage→maintenance and examination 3.脚手架搭设的方法Scaffold erection method 3.1第一部分脚手架First section scaffold 3.1.1从+12.35m平台起开始搭设，A，B，C，D，E，F，G轴线立杆应正好座落在钢格板支撑梁的中心。Erect from +12.35m platform, and A，B，C，D，E，F，G axial standards shall lie on the bearing beam cente