立式圆筒形钢制焊接储罐施工及验收规范

目次 1总则 ··················································································································1 2材料验收 ···············································································································2 3预制 ··················································································································3 3.1一般规定 ·······································································································3 3.2壁板预制 ·······································································································4 3.3底板预制 ·······································································································6 3.4浮顶和内浮顶预制 ···························································································7 3.5固定顶顶板预制 ······························································································8 3.6构件预制 ·······································································································8 4组装 ··················································································································9 4.1一般规定 ·······································································································9 4.2基础检查 ·······································································································9 4.3罐底组装 ····································································································· 10 4.4罐壁组装 ····································································································· 12 4.5固定顶组装 ·································································································· 14 4.6浮顶组装 ····································································································· 14 4.7附件安装 ····································································································· 14 5焊接 ················································································································ 16 5.1焊接工艺评定 ······························································································· 16 5.2焊工考核 ····································································································· 16 5.3焊前准备 ····································································································· 16 5.4焊接施工 ····································································································· 17 5.5焊接顺序 ····································································································· 18 5.6修补 ········································································································ 19 6检查及验收 ·········································································································· 21 6.1焊缝的外观检查 ···························································································· 21 6.2焊缝无损检测及严密性试验 ······························