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1、钢管修磨及修磨后检验作业指导书SteelpipegrindingandaftergrindingtestingOperatinginstructions编制人Preparedby李学精LiXucjing编制日期Preparationdate2013.10.20Oct.20,h,2013审核人/Fl期Reviewedby/date刘建辉、邓世荣/2013.10.21LiuJianhui/Oct.21,h,2013批准人/日期Approvedby/datc阳恩虎/2013.10.21YangEnhu/Oct.21th,2013牛效H期Eff
2、ectivedate版本号/修订码Ver./Rev.2013.10.22Oct.22sl,2（）13A/01范围Scope本作业指导书规定了经探伤不合格的钢管的修磨要求、对修磨点的检测要求和修磨后钢管的更探的要求。木作业指导书适用于我公司所有•产品。本作业指导书未规定修磨人员和检验人员的安全防护要求,这些要求参照我公司的相关规定执行。TheoperatinginstructionsdefinethegrindingrequirementsfortheNDTfailedtestingpipe,testingrequirementsforg
3、rindingpositionaftergrindingandtheretestrequirementsforthepipethathavebeengrindedTheoperatinginstructionsapplytoal1ourproducts.Theoperatinginstructionsarenotrequiredthesecurityrequirementsofgrindingandinspectionpersonnelwhichrefertocompany'srelevantregulations.2参考标准Refer
4、encespecificationAPT5CTAPT5LAPI5DPDCM-SU-5272-APPI-SU-1051-E3检测标准TestspecificationASTME709ISO10893-54修磨及检验过程Grindingandinspectionprocess4.1在修濟台架处准备好许J桝机、超声波测厚仪、磁轨式磁粉探伤机等：Preparethegrinder,ultrasonicthicknesstester,yoke-typemagneticparticleinspectionmachineinthegrindingra
5、ck.4.2根据探伤不合格报告或探伤缺陷的标记找到待修磨处；FindthegrindingpositionaccordingtothefailurereportsorthemarkingofNDTdefect4.3用角磨机磨削待修磨处,找出缺陷；Grindingthepipewithgrindingmachinetolocatedefects4.4对缺陷处进行修磨，修磨时角磨片与钢管的夹角不超过15°,以保证修磨区域闘滑过度，倾度大于4:1Onthedefectofgrinding,grindingandgrindinganglecor
6、nertubeislessthan15°,toensurethegrindingzonearesmooth,inclinationisgreaterthan4:14.5修磨过程中目视观察缺陷确认缺陷已去除干净;Makesurethevisualdefectshavebeenremovedduringthegrindingprocess4.6（客户或产品标准要求时）对修磨处进行磁粉探伤，确认缺陷已去除干净；（Customerorproductspecrequired)MPTongrindingsection,confirmthedefec
7、tshavebeenremoved;4.6.1磁粉探伤准备工作preparationforMP14.6.1.1nJ'见光照度检查：检测修磨台架处的可见光照度，可见光照度应大于5001ux,每班至少进行一次；Visiblelightiliuminationexamination:detectiongrindingbenchatvisibleilluminalion,visible1ightilluminationshouldbegreaterthan5001ux,testatleastoncepershift;4.6.1.2磁悬液浓度检查
8、：用黑磁粉配制磁悬液，磁悬液浓度应在1.2-2.4ml/100ml,每班至少进行一次；Magneticsuspensionconcentrationcheck:useblackpowderformulate
