【正文】 en there is overstandard, do spotcheck double。 if there still has objections, do 100% inspection. The inspection methods should accord with the requirement of JB473094, and the result should accord with JB473094 level Ⅰ of drawing requirement. 對(duì)球殼的厚度進(jìn)行抽檢，實(shí)測(cè)厚度不得小于名義厚度減去鋼板的負(fù)偏查。 The surface of lamella when normal tensile strength is more than 540Mpa should do 20%MT or PT, and the result must answer for the designed requirement. 球殼板進(jìn)行不少于 20％超聲波復(fù)驗(yàn)，且每帶不少于 2塊，上下極不少于 1塊，若發(fā)現(xiàn) 4 超標(biāo)缺陷，應(yīng)加倍抽查，若仍有超標(biāo)缺陷，則應(yīng) 100％檢測(cè)，檢測(cè)方法符合 JB473094的要求； 檢測(cè)結(jié)果應(yīng)符合圖紙要求的 JB473094 的Ⅰ級(jí)。 and thickness is 30mm. The sort of spherical tank is pressure vessel Ⅲ , the coefficient of welding line is . 3．編制依據(jù) Workout gist CSPC南海石化球罐圖紙； Drawings of CSPC Nanhai Petrochemical Spherical Tank。, and thickness is 36mm。 and thickness is 52mm。厚度為 30mm。厚度為 52mm；編號(hào)為T(mén)1956球罐球殼皮的材質(zhì)為 SA537CL1，公稱(chēng)容積為 1300M179。. The construction term is 7 months. In order to plete the project successfully, we make out this project aim at the NDT inspection of the installsite. Main design parameter of spherical tank: 本工程共有 14臺(tái)球罐，其中 T1950， T1951， T1952， T1953， T1976， T1977， T1978，T1979球罐球殼皮的材質(zhì)為 SA537CL2，公稱(chēng)容積為 1500M179。 1500M179。針對(duì)球罐過(guò)程安裝現(xiàn)場(chǎng)的無(wú)損檢測(cè)工作。三種。 1500M179。 1 南海石化球罐項(xiàng)目 Nanhai Petrochemical Spherical Tank Project 無(wú)損檢測(cè)方案及工藝 NDT Inspection Procedure and Technics 2 ： Summarize: CSPC南海石化球罐工程共有 14臺(tái)球罐，材質(zhì)為 16MnR及 SA537CL2，厚度為 30mm， 36mm，52mm，三種規(guī)格。容積為 1300M179。 3000M179。施工工期為 7 個(gè)月為了保證此項(xiàng)工程的順利完 成。特制定本方案； There are 14 spherical tanks in CSPC Nanhai Petrochemical Spherical Tank Project. The material is 16MnR and SA537CL2， there are three specs with the thickness of 30mm, 36mm and 52mm. There three sizes of volume, that is 1300M179。 and 3000M179。厚度為 52mm；編號(hào)為 T1954，T1955， T1959球罐球殼皮的材質(zhì)為 SA537CL2，公稱(chēng)容積為 3000M179。厚度為 36mm，編號(hào)為 T1957，T1958 球罐球殼皮的材質(zhì)為 16MnR，公稱(chēng)容積為 1300M179。球罐類(lèi)別為Ⅲ類(lèi)壓力容器，焊縫系數(shù)為 There are 14 spherical tanks will carry out inspection for this project. The lamella material of T1950， T1951， T1952， T1953， T1976，T1977， T1978， T1979 is SA537CL2， the nominal volume is 3000M179。 the lamella material of T1956 is SA537CL1,the nominal volume is 1300M179。 the lamella material of T1957, T1958 is 16MnR， the nominal volume is 1300M179。 GB123371998《鋼制球形儲(chǔ)罐》 GB123371998《 Steel Spherical Tanks》 質(zhì)技監(jiān)局鍋發(fā) [1999]154號(hào)《壓力容器安全技術(shù)監(jiān)察規(guī)程》； 《 Pressure Vessel Safety Technics Supervise Specification》； CSPC南海 石化球罐工程《安裝方案》 《 Installation Project of CSPC Nanhai Petrochemical Spherical Tank Project》 GB5009498《球形儲(chǔ)罐施工及驗(yàn)收規(guī)范》 GB5009498《 Code for Construction and Acceptance of Spherical Tanks》 JB473094《壓力容器無(wú)損檢測(cè)》 3 JB473094《 Nondestructive Testing of Pressure Vessels》 SY405593《 球形儲(chǔ)罐γ射線(xiàn)全景爆光技術(shù)標(biāo)準(zhǔn)》 SY405593《 Gamma Expose Technical Standards for Spherical Tank》 GB1501998《 鋼制壓力容器》 GB1501998《 Steel Pressure Vessels》 GBZ1322020工業(yè)γ射線(xiàn)探傷衛(wèi)生防護(hù)標(biāo)準(zhǔn) GBZ1322020 Radiological Protection Standards for Industrial Gamma Defect Detecting GBZ1172020工業(yè) X射線(xiàn)探傷衛(wèi)生防護(hù)標(biāo)準(zhǔn) GBZ1172020 Radiological Protection Standards for Industrial Xray Detection Implement standards 質(zhì)技監(jiān)局鍋發(fā) [1999]154號(hào)《 壓力容器安全技術(shù)監(jiān)察規(guī)程 》 《 Pressure vessel safety technics specification》 GB1501998《鋼制壓力容器 》 GB1501998《 Steel pressure vessels》 GB123371998《鋼制球形儲(chǔ)罐 》 GB123371998《 Steel spherical tanks》 GB5009498《球形儲(chǔ)罐施工及驗(yàn)收規(guī)范 》 GB5009498《 Code for construction and acceptance of spherical tanks》 SY405593《球形儲(chǔ) 罐γ射線(xiàn)全景爆光技術(shù)標(biāo)準(zhǔn) 》 SY405593《 Gamma Expose Technical Standards for Spherical Tank》 JB473094《壓力容器無(wú)損檢測(cè) 》 JB473094《 Nondestructive testing of pressure vessels》 GBZ1322020工業(yè) R射線(xiàn)探傷衛(wèi)生防護(hù)標(biāo)準(zhǔn) GBZ1322020 Radiological protection standards for industrial gamma defect detecting GBZ1172020工業(yè) X射線(xiàn)探傷衛(wèi)生防護(hù)標(biāo)準(zhǔn) GBZ1172020 Radiological protection standards for industrial Xray detection Contents of NDT INSPECTION Retest on the material 標(biāo)準(zhǔn)抗拉強(qiáng)度值大于 540Mpa的 20％的磁粉或滲透檢測(cè)，檢測(cè)結(jié) 果符合設(shè)計(jì)要求。 Retest on body with no less than 20% UT, make sure at least of 2 blocks per strip and at least of 1 block per pole. When there is overstandard objection, spotcheck double。抽檢數(shù)量為球殼板的 20％，即每臺(tái)球罐的赤道板為 4 張，上下極帶板各為 2 張；每張板的檢測(cè)點(diǎn)不少于 5 個(gè)，每個(gè)測(cè)點(diǎn)值應(yīng)為三次測(cè)點(diǎn)的平均值，發(fā)現(xiàn)超標(biāo)，應(yīng)加倍抽查，若仍有超標(biāo) ，則應(yīng)100％檢測(cè)。 if there is still overstandard, do 100% inspection. NDT inspection during welding 球殼板對(duì)接焊單面焊完，背面清根打磨后，應(yīng)進(jìn)行 100％滲透檢測(cè)；工裝、卡具拆除后焊疤修磨出進(jìn)行 100％ PT 或 100％ MT。 the result should meet the standard JB473094 grade 1. 焊后無(wú)損檢測(cè) NDT inspection after welding 所有材料的球殼板對(duì)接焊縫須進(jìn)行 100﹪ RT檢測(cè)， 100﹪ 的 UT檢測(cè)，所有的焊工考試試板和焊接產(chǎn)品試板焊后需進(jìn)行 100﹪ 的射線(xiàn)檢測(cè)（ RT）。支柱對(duì)接焊縫應(yīng)進(jìn)行 100﹪ 的MT檢測(cè)。 do 100% MT on all the buttwelded seam of the outboard body before pressure test。每項(xiàng)檢測(cè)方法的Ⅱ級(jí)資質(zhì)人員不得少于 2人。Ⅱ級(jí)或Ⅲ 級(jí)人員負(fù)責(zé)對(duì)檢測(cè)結(jié)果的評(píng)定和簽發(fā)檢測(cè)報(bào)告。 Inspector who has level Ⅰ certificates can do relative NDT, record and neaten inspection data under the direction of the inspector who is level Ⅱ . The inspector who is levelⅡ or Ⅲ can assess the result and underwrite the report. γ operator should has the permit that issued by sanitation and epidemic prevention department. 球罐無(wú)損檢測(cè)技術(shù)負(fù)責(zé)人必須是持有 RT或 UT的Ⅲ級(jí)資質(zhì)人員。 The revised eyesight of RT film review can’ t be less than , when at the distance of 400mm, he can read the printing English letter that has height and spacing. NDT inspection procedure 委托程序 Commission procedure 安裝單位必須在具備相應(yīng)檢測(cè)方法的條件下向檢測(cè)單位提出書(shū)面的 檢測(cè)任務(wù)委托書(shū)。 Commitment should include frondose inspection methods, grading, acceptance level, inspecting date and relative technique requirement. 委托書(shū)必須有安裝單位檢查員并經(jīng)外觀(guān)檢查達(dá)到相應(yīng)檢測(cè)方法的表面要求后簽字及監(jiān)理單位簽字后才能有效。 The installing party should provide construction work plan of the inspection task in order to prearrange γ source and prepare for personnel and material. Preparation procedure for inspection ，并對(duì)現(xiàn)場(chǎng)的施工環(huán)境條件、安全措施、水、電、照明等條件進(jìn)行落實(shí)。