【正文】 .....................................21 總平面的布置原則 ...................................................................................................21 項目辦公室和庫房的設(shè)置 ........................................................................................21 用電、用氣、用水、消防、通訊 ..............................................................................22 用電 ...............................................................................................................22 用氣 ...............................................................................................................22 用水 ...............................................................................................................22 消防 ...............................................................................................................22 通訊 ...............................................................................................................22 主要施工方案 .................................................................................................................22 施工準備及要求 .......................................................................................................22 土石方工程施工方法 ................................................................................................23 一般要求 ........................................................................................................23 資陽港華有限燃氣 公司 危舊管網(wǎng)改造 及調(diào)壓設(shè)施更換 工程施工組織設(shè)計 第 6 頁 共 86 頁 測量與放線施工方法 ......................................................................................24 施工現(xiàn)場安全防護 ..........................................................................................24 溝槽開挖 ........................................................................................................25 施工工藝流程 ................................................................................... 25 溝槽開挖前工作 ............................................................................... 25 溝槽開挖形式 ................................................................................... 26 回填、修復(fù)及警示帶敷設(shè) ...............................................................................27 鋼制燃氣管道的主要施工方法 ..................................................................................28 主要施工工藝流程 ..........................................................................................28 管道敷設(shè) .......................................................................................................29 管道敷設(shè)的一般要求 ........................................................................ 29 鋼管和管件的敷設(shè) ........................................................................... 30 管道焊接施工方法 ..........................................................................................31 焊接的一般要求 ............................................................................... 31 鋼管焊接工藝 ................................................................................... 32 焊接檢驗 .......................................................................................... 34 鋼法蘭接口 ...................................................................................................35 絕緣接口 ........................................................................................................35 聚乙烯管施工方法 ...................................................................................................35 聚乙烯管敷設(shè) .................................................................................................35 聚乙烯管道試驗與吹掃 ...................................................................................38 閥門安裝、試壓 .......................................................................................................38 閥門安裝 ........................................................................................................38 閥門試壓 ........................................................................................................40 管道防腐的施工方法 ................................................................................................40 一般要求 ........................................................................................................40 陰極保護 ........................................................................................................41 油性膠布包扎 ................................................................................................42 通氣置換 .................................................................................................................42 檢查 與試驗 ..............................................................................................................43 一般規(guī)定 ........................................................................................................43 管道清掃 ........................................................................................................44 強度試驗 ........................................................................................................44 壓力試驗安全要求 ............................................................................ 44 壓力試驗 .......................................................................................... 45 嚴密性試驗 ....................................................................................................46 管道干燥 ........................................................................................................47 管道碰頭要求 .................................................................................................47 竣工驗收 .................................................................................................................48 工期保證措施 .................................................................................................................50 項目組織方面 ..........................................................................................................50 管理手段方面 .............................