工業(yè)管道維護(hù)檢修規(guī)程

#/22表12在用管道常見故障處理方法表序號(hào)故障現(xiàn)象故障原因處理方法1法蘭泄漏螺栓上緊力不夠法蘭密封面損壞法蘭密封墊失效上緊螺栓修復(fù)密封面或更換法蘭更換密封墊/帶壓堵漏2焊縫泄漏焊縫有砂眼、裂紋、腐蝕減薄補(bǔ)焊修復(fù)或帶壓密封堵漏3管子泄漏管子腐蝕穿孔補(bǔ)焊修復(fù)/帶壓密封堵漏/更換管段帶壓堵漏處理5.2.2.1帶壓密封堵漏是指采用堵漏密封膠粘補(bǔ)或注入預(yù)制的夾具盒內(nèi)對(duì)管道的法蘭焊縫和管子等部位泄漏進(jìn)行堵漏的一種新型密封技術(shù)。劇毒介質(zhì)管道、均勻腐蝕的管道不宜采用帶壓堵漏。帶壓密封堵漏施工前應(yīng)辦理許可證，并經(jīng)有關(guān)部門審批。帶壓密封堵漏應(yīng)由專門人員執(zhí)行。密封膠應(yīng)根據(jù)泄漏介質(zhì)、溫度和壓力等特性選擇。密封夾具應(yīng)根據(jù)泄漏部位具體形狀設(shè)計(jì)加工，并進(jìn)行強(qiáng)度計(jì)算和校核。帶壓密封堵漏前應(yīng)制定安全防范措施。帶壓堵漏設(shè)施是臨時(shí)處理措施，系統(tǒng)停車時(shí)應(yīng)拆除，并修復(fù)泄漏部位。緊急情況停車當(dāng)管道發(fā)生以下情況之一時(shí)，應(yīng)采取緊急措施并同時(shí)向有關(guān)部門報(bào)告：a.管道超溫、超壓、過冷，經(jīng)過處理仍然無效；b.管道發(fā)生泄漏或破裂，介質(zhì)泄出危及生產(chǎn)和人身安全時(shí)；發(fā)生火災(zāi)、爆炸或相鄰設(shè)備和管道發(fā)生事故，危及管道的安全運(yùn)行時(shí)；發(fā)現(xiàn)不允許繼續(xù)運(yùn)行的其他情況時(shí)。

附錄A常用無縫鋼管選用表（參考件）鋼號(hào)標(biāo)準(zhǔn)使用溫度范圍/°c備注Q235A、B、CGB912GB3-20~47510GB8163-20~475正火狀態(tài)20GB8163GB9948-20~475正火狀態(tài)20GGB6479-20~47516MnGB6479-20~47509MnDGB150-29~47516MnDJB4727-29~47515MnVGB6479-20~40012CrMoGB9948-20~52512Cr2MoGB6479-20~57515CrMoGB9948-20~550Cr5MoGB9948-20~600Cr9MoGB9948-20~600OCr13GB/T14976-20~6000Cr19Ni9GB/T14976-196~7000Cr18Ni9GB/T14976-196~7000Cr18Ni10TiGB/T14976-196~700OCr17Ni12Mo2GB/T14976-196~7000Cr18Ni12Mo2TiGB/T14976-196~5000Cr19Ni13Mo3GB/T14976-196~700OOCr19Ni10GB/T14976-196~425OOCr17Ni14Mo2GB/T14976-196~450OOCr19Ni13Mo3GB/T14976-196~450

附錄B常用無縫鋼管選用表（參考件）鋼號(hào)焊條氬弧焊絲備注國際牌號(hào)統(tǒng)一牌號(hào)Q235-A、B、CE4303J422H08A10、2020GE4316J426H08Mn2SiH08Mn2SiE4315J42716MnE5003、E5016J502、J506H08MnMoAE5015J507H08Mn2SiA09MnDE5015W60716MnDE5016-GJ506RHH08MnMoAE5015-GT507RHH08Mn2SiA15MnVE5003J502H08Mn2SiA12CrMoE5515-B1R202H13CrMoA12Cr2MoE6015-B3R407H08CrMoA15CrMoE5515-B2R307H13CrMoA1Cr5MoE1-5MoV-15R507H1Cr5Mo1Cr18Ni9TiE0T9T0Nb-16A132HOCr20Ni10Ti0Cr18Ni10TiE0T9T0Nb-15A137OCr19Ni9EO-19-10-16A102HOCr20Ni10OCr18Ni9EO-19-10-15A107OCr17Ni12Mo2E0T8T2Mo2-16A202HOCr19Ni12Mo2EO-18-12o2-15A2070Cr18Ni12Mo2TiE0T8T2Mo2-16A202HOOCr19Ni12Mo2EO-18-12Mo2Nb-16A2120Cr19Ni13Mo3HOCr20Ni14Mo3OOCr19Ni10EOO-19-10-16A002HOOCr21Ni1000Cr17Ni14Mo2E00T8T2Mo2-16A02200Cr19Ni14Mo3E0-19T3Mo3T6A242Cr9MoR706H1Cr9Mo09MnDE5015W607

0Crl3El-13-16El-13-15G202G207附錄C常用無縫鋼管選用表（參考件）介質(zhì)名稱操作條件法蘭螺栓與螺母墊片公稱壓力/MPa介質(zhì)溫度/°c材質(zhì)類型螺栓材質(zhì)螺栓類型螺母材質(zhì)油品液化氣溶劑催化劑1.6<200Q235AF對(duì)焊Q235單頭或雙頭Q235耐油石棉橡膠墊片201~300Q235對(duì)焊35雙頭25纏繞式墊片2.5<200Q235F對(duì)焊Q235雙頭Q235纏繞式墊片201~35020(25)對(duì)焊35雙頭25纏繞式墊片351~45020(25)對(duì)焊35CrMoA雙頭35波形（平形）鐵包石棉墊片451~550Cr5Mo對(duì)焊25CrMoVA雙頭30CrMoA合金鋼纏繞墊片4.0~6.4<35020(25)對(duì)焊35雙頭25纏繞式墊片351~45020(25)對(duì)焊35CrMoA雙頭35波形（平形）鐵包石棉墊片451~550Cr5Mo對(duì)焊25CrMoVA雙頭30CrMoA合金鋼纏繞墊片551~600Cr5Mo對(duì)焊25CrMoVA雙頭30CrMoA合金鋼纏繞墊片>6.4<35020(25