【正文】 系統(tǒng)的重力。2 編制依據(jù) 德悉尼布天辰化學(xué)工程（天津）有限公司提供的工藝管道施工圖； 工藝管道設(shè)計(jì)技術(shù)交底（會議紀(jì)要）； 《石油化工劇毒、可燃介質(zhì)管道工程施工及驗(yàn)收規(guī)范》（SH35011997）； 《工業(yè)金屬管道工程施工及驗(yàn)收規(guī)范》（GB5023597）； 《現(xiàn)場設(shè)備、工業(yè)管道焊接工程施工及驗(yàn)收規(guī)范》（GB5023698）； 《埋地鋼質(zhì)管道環(huán)氧煤瀝青防腐技術(shù)標(biāo)準(zhǔn)》（SY/T044796）； 《石油化工鋼制通用閥門選用、檢驗(yàn)及驗(yàn)收規(guī)范》（SH306494）； 《石油化工設(shè)備和管道隔熱技術(shù)規(guī)范》（SH30102000）；《工業(yè)設(shè)備、管道防腐蝕工程施工及驗(yàn)收規(guī)范》（HGJ22991）；《工業(yè)設(shè)備及管道絕熱工程施工及驗(yàn)收規(guī)范》（GBJ12689）；《石油化工工程鉻鉬耐熱鋼管道焊接技術(shù)規(guī)程》（SHJ52091）；《電力建設(shè)施工及驗(yàn)收技術(shù)規(guī)范》(管道篇)DL503194《電力建設(shè)施工及驗(yàn)收技術(shù)規(guī)范》（火力發(fā)電廠焊接篇）DL500792《石油化工企業(yè)設(shè)備管道表面色和標(biāo)志》SH30431991《石油化工異種鋼焊接規(guī)程》SH35261992《石油化工鉻鎳奧氏體鋼、鐵鎳合金和鎳合金管道焊接規(guī)程》SH35231999《壓力容器無損檢測》（JB473094）；《石油化工施工安全技術(shù)規(guī)程》（SH350599）；《工程建設(shè)交工技術(shù)文件規(guī)定》（SH350393）；《50萬噸/年延遲裝置施工組織設(shè)計(jì)》；《壓力管道安裝質(zhì)量保證手冊》（QG/）；《壓力管道安裝質(zhì)量程序文件》(QG/)；《壓力管道安裝工藝標(biāo)準(zhǔn)》（QG/）；《壓力管道安裝竣工技術(shù)文件規(guī)定》（QG/）。3 工藝配管的特點(diǎn)： The character of pipe erection PTA裝置中易燃，易爆及腐蝕性介質(zhì)的管道較多，且物料大多為漿料和粉料，有強(qiáng)烈腐蝕性，故配管材料選用要求嚴(yán)格。 There are many movable equipments in the installation, we need ensure pipe erection without stressing, and cannot impose external force on the equipments, In the pipe erection, we need start from the equipment inside, and then the outside of the equipments. We need set up the pipe rack in time to avoid the gravity from the pipe system.，需要投入大批量的優(yōu)秀焊工。為提高勞動效率，加快施工進(jìn)度，我們將大力推進(jìn)管道自動焊，實(shí)行管道預(yù)制工廠化、產(chǎn)品化。The quality assurance of pipe construction material is the basis of the construction quality. Our pany owns a available and mature management system of material inspection and we will adjust it according to the actual project character for quality ensure. 成立專門的檢驗(yàn)小組實(shí)施統(tǒng)一的管材管件檢驗(yàn)，并按照相應(yīng)標(biāo)準(zhǔn)組織檢驗(yàn)。 The screw thread shall be free from defects such as deformities , scratches and irregular of distance between thread to thread, and shall be in good quality without loosening and jamming .、纏繞墊不得有徑向劃痕、松散、翹曲等缺陷，石棉墊表面應(yīng)平整光滑，不得有氣泡、分層、折皺等缺陷。 The valve inspection and test procedure see drawing 31%，且不少于1個(gè)，進(jìn)行殼體壓力試驗(yàn)和密封性試驗(yàn)。Valves shell tested pressure should be times of nominal pressure , and the test should last 5 minutes, It will be qualified in the case of shell and packing be free from leakage.圖31 閥門檢驗(yàn)、試驗(yàn)工藝流程圖 Drawing 31 Valve Inspection and Test Flow Plan閥門外觀質(zhì)量檢查valve configuration quality inspection質(zhì)量證明文件核查、確認(rèn)Review and Confirmation of Qualification Documentqiquuqq成立閥門檢驗(yàn)、試驗(yàn)小組Setting Up valve inspection and test group嚴(yán)密性試驗(yàn)Pressure test強(qiáng)度試驗(yàn)intensity test 不合格unqualified檢驗(yàn)、試驗(yàn)狀態(tài)標(biāo)識Inspection ,test situation identification工裝設(shè)計(jì)制作檢驗(yàn)場地準(zhǔn)備Process assembly design and fabrication inspection yard preparation yard 編制技術(shù)措施并進(jìn)行技術(shù)交底Prepared Technique and Transfer it 不合格品處置Nonqualified production disposal合格交付安裝Erection available合格、節(jié)流閥外，閥門的密封試驗(yàn)宜以公稱壓力進(jìn)行，以閥瓣密封面不泄漏為合格。 Internal water in the valve acceptable should be drained in time and density area should be dried and coated with rust preventive oil. The valve should be closed .The egress and ingress should be closed.，允許偏差為177。要求起跳壓力明顯，無前漏、后漏現(xiàn)象。防止施工過程用錯(cuò)材料，并方便檢查人員監(jiān)查確認(rèn)。We have track crown blocks, lathes, beam drills, plate shears ,groove processing machine and automatic welding machines in the piping prefabrication yard to avoid field work bearing such as technique management ,material management and equipment management, make housekeeping ,develop the second site, set up piping prefabrication yard ,make piping prefabrication process in the market and then erect in the jobsite 預(yù)制前仔細(xì)核對單線圖與平面圖，核對基礎(chǔ)、設(shè)備、管架、預(yù)埋件、預(yù)留孔是否正確，對于最后封閉的管段應(yīng)考慮組焊位置和調(diào)節(jié)裕量。 Steel material cutting and piping groove process should use methods as follows。為保證焊接質(zhì)量，工藝管道焊接均采用氬電聯(lián)焊的工藝進(jìn)行。焊接質(zhì)量直接決定整個(gè)安裝工程的質(zhì)量，因此，我們應(yīng)從焊接材料、焊接工藝、施焊過程、焊接檢驗(yàn)諸方面對焊接質(zhì)量進(jìn)行嚴(yán)格控制，確保每個(gè)焊接環(huán)節(jié)都處于受控狀態(tài)。 Welders shall work on piping welding in acceptable welding project and in available period. 焊材應(yīng)有產(chǎn)品合格證明書，并經(jīng)復(fù)驗(yàn)合格。 Welders do their job with welding technique card,. Which will be prepared and reviewed by equivalent steel welding process qualification and procedure. equivalent steel welding process qualification and procedure. 當(dāng)出現(xiàn)下列情況如沒有防護(hù)措施時(shí)，應(yīng)停止焊接工作： Welding operation must be stop in case following problem happened without protecta. 手工電弧焊時(shí)，風(fēng)速≥8m/s，氬弧焊時(shí)，風(fēng)速≥2m/s；The wind velocity is≥8m/s in SMAW, the wind velocity is ≥2m/s in arc welding.b. 相對濕度＞90%；Relative moisture is ＞90%c. 下雨；Raining 焊接完畢后，及時(shí)在焊縫兩側(cè)50mm范圍內(nèi)打上焊工鋼印號，不銹鋼鋼管不做鋼印標(biāo)識，但是應(yīng)在管道單線圖上標(biāo)注清楚。 Welding groove should cleaned by abrasive wheel ,Groove should be flat and smooth, The oil ,rusting and oxidization of groove surface should cleaned very well. In clean range should have no defects such as cracking and double layers.，應(yīng)采用小規(guī)范、短電弧、快速焊和窄焊道工藝進(jìn)行焊接，并應(yīng)控制層間溫度不得超過150℃，必要時(shí)，應(yīng)采取強(qiáng)制冷卻措施。充氬時(shí)，應(yīng)將管口內(nèi)部的空氣置換干凈，待坡口處有氬氣均勻流出時(shí)方可進(jìn)行焊接。Material surface is prohibited from fired arc and tested current when welded. Pay attention to the quality of butt and arc, the filled pool, the divided plex butt.，在每瓶氬氣 正式投用施焊前，均應(yīng)對每瓶氬氣的純度進(jìn)行試焊檢查，試焊檢查不合格的氬氣不得用于正式焊接施工。Tungsten argon arc welding and arc with heatronic electrical power are applied for titanium welding。The work of welding can be carried out in nonwind location with cleanness, therefore, we have to cast an obscure sail at the construction site. Ⅸ 要求考試合格，并配備鉸刀、不銹鋼絲刷、氧化鋯鋁砂輪、丙酮洗劑、保護(hù)罩等專用工具。填充焊絲也應(yīng)用丙酮清理干凈。定位焊應(yīng)采用與正式焊接相同的焊接材料及焊接工藝，其焊縫長度一般為10mm左右，高度不超過壁厚的2/3，焊點(diǎn)數(shù)應(yīng)根椐管徑和壁厚確定。②焊炬拖罩型式應(yīng)根據(jù)焊件型狀和尺寸決定，做到保護(hù)可靠，操作方便③管內(nèi)應(yīng)提前充氬，排凈空氣，并保持微弱正壓和呈現(xiàn)流動狀態(tài)。In the course