ExGudietra From Quick
5
Change of an identical item, owing to corrosion + MAWP increased for whole system repair and re-rating How often an API 570 has to sit the online code update test every 6 years Which dimension stay the same regardless of the wall scheduled thickness OD ASME code for valves B16.34 Prefered inspection method for injection points RT and/or UT Name of low pressure (10% MAWP) air/nitrogen name with soap Leak Test Important requirement of Material verification program Documented Roles and responsibilities PMI stands for Positive Material Identification % of Material ewaminiation for high risk piping system with likely material mixup 100%
description
ExGudietra From Quick
Transcript of ExGudietra From Quick
Change of an identical item, owing to corrosion + MAWP increased for whole systemrepair and re-ratingHow often an API 570 has to sit the online code update testevery 6 yearsWhich dimension stay the same regardless of the wall scheduled thicknessODASME code for valvesB16.34Prefered inspection method for injection pointsRT and/or UTName of low pressure (10% MAWP) air/nitrogen name with soapLeak TestImportant requirement of Material verification programDocumented Roles and responsibilitiesPMI stands forPositive Material Identification% of Material ewaminiation for high risk piping system with likely material mixup100%"Materials historically greatest number of...material nonconformances with serious consequences"Low Alloy steel replaced by CSPiping most involved in material mixup
bypass, small diameter (=<2NPS) piping, valves, boltsPotential Problem of doing XRF in dissimilar material weldDilutionMaterial most susceptible to brittle fractureFerritics CS- Low Alloy -SSBest Mitigation Method for CUI on SS with rockwhoolChange to Low chloride laggingEffect of T on Soil corrosion rateIncrease with Increase in TApparenc of internal CO2 CorrosionSmooth grooving of pipe wallCurve for Temperature-Sufidation rateMc Conomy CurveMaterial with highest resistance to sulfidation18/8 SSTwo main types of Environmental crackingCl SCC and caustic embrittlementModes of GMAWGlobular , short circuit, spray transferWelding process where filler rod is added by handGTAWAdvantage of GTAWBest control of weld poolWelding process which can be automatedSAW
Welding process with no creation of slagGMAW GTAWFlux type for low hydrogen use with SAWAgglomeratedElectrode for SMAW for low hydrogen applicationBasictype of weld for flush insert patches can be used in corroded areaspenetration groove weld useCode for hot tappingAPI 2201When is Preheat instead of PWHT forbiddenPWHT for environmental cracking resistanceWhat considerations fillet welded patches requireWeld joint efficiency, Crevice corrosionWho approves Welding procedure qualified by othersInspectorIf no conform to ASME IX filler metal be approved byOwnerAcceptance criteria for tensile testUTS-5%PQR using a S number qualifies ...both S-number and P-number Materialswhat welding process cannot be qualified by radiographyGMAW (short circuit mode)
Thickness range for using Iridium0.25-3 inMagnification of low power magnification devices1.5-3 xSpot RT requirements for longitudinal weld (joint efficiency 0.9)1ft/100ftSpot RT for circumferential weldone shot on one in each 20 welds for each welderMPI maximum prod spacing8 inWhat is Y in design calcCoeff for t/D ratioY changes for what t/D ratioD = 6 tMaximum flange size covered by B16.5NPS 24Parameted for flange wall thicknessC
