Piping Inspector Course (SATASHIYA) Refinery Oil and Gas

Apply ASME B31.3 acceptance criteria for welds in refinery piping using visual VT and radiographic RT, distinguishing imperfection from defect.

Explain refinery piping weld visual vt and rt acceptance criteria 341.3.2, including symbols a, c, na, ip, lf, i, k, m; criteria for porosity, undercut, lack of fusion, reinforcement.

Learn visual and radiographic acceptance criteria for process piping per ASME B31.3, including M category service, 100% radiography, round indications, porosity limits, and BPVC Appendix Four symbols.

Learn visual and radiographic acceptance criteria from B31.3 table 341.1, focusing on linear indications and slack inside welding, with allowable lengths: single, two times, and four times wall thickness.

Apply visual vt and radiographic rt acceptance criteria to identify slack, undercut, porosity, surface finish, concavity, and root reinforcement, using k and l symbols and density checks per pipe thickness.

Learn visual testing and acceptance criteria for piping radiography, including cluster, random, and isolated porosity, ASME B31.3 visual methods, and API 1104 criteria.

Master dye penetrant testing for piping, pipelines, and weld joints using ASME BPVC section eight, division one. Explore surface prep, indications, linear and round, thresholds, and DPI reporting requirements.

Explore the MPT acceptance criteria for piping, pipeline, structure welding butt fillet welds, per ASME BPVC section eight division one, and learn the MPI method, equipment, and reporting.

Explore radiography testing methods for piping and vessels per ASME section five, covering backscatter radiation, densitometer calibration, image quality indicators, and panoramic, elliptical, and superimposed techniques.

Learn radiographic techniques for pipe welds per ASME BPVC section five appendix A: single wall single image and panoramic exposure; double wall methods—including direct touch, ellipse, and superimpose—across pipe sizes.

Master fit up design for piping by maintaining a 2.5–3 mm root gap for gtaw welding to prevent incomplete or excess penetration; verify with vernier calipers per b31.3 and b16.25.

Learn QA/QC for piping, focusing on fit up and root gap 2.5–3 mm with root face 1–2 mm to prevent incomplete penetration, and review A106B seamless vs A672 welded pipe.

Learn about refinery pipe materials, including carbon steel seamless and welded pipes, p numbers as parent metal identifiers, and is 1239 GI pipes for scaffolding.

Explore pipe materials and codes, including is 1239 gi pipe and is 2062 mild steel, with normalization, post weld heat treatment, and API 5L traceability.

Explore LTCS low temperature carbon steel, its manganese-enhanced toughness, and its use in cold service to -46°C, including heat number, impact testing, and post weld heat treatment.

Learn about low alloy steel pipe grades such as P11, P22, P5, P9, and P91 with vanadium for high-temperature service. Apply preheating, PWHT, and radiography to ensure weld quality.

Explore stainless steel SS piping, high alloying elements, and ASME codes for seamless and welded pipes. Understand cryogenic service temperatures and welding considerations, including back strips.

Master welding and material selection for refinery piping, including aluminium welding challenges, stainless steels 304/316/316L, duplex and super duplex (UNS 3205, S32750), ferrite control, interpass temperature, and safety.

Examine ctod crack tip opening displacement tests, ferrite tests, and intergranular corrosion (ICC) tests used to assess stainless steel, duplex and super duplex welds in refinery piping.

Learn ASME code for piping, including Ctod, ferrite, and IGC testing, pipe fit-up, and welding procedure requirements. Review demineralized water use and limits for IGC.

Learn a refinery piping quality assurance plan (QIP) covering store inspection through handover, ITP responsibilities, welding and testing procedures, and codes like ASME, API 1104, and AWS D1.1.

Apply ASME code 03 and AQAP quality assurance to control welding quality, monitor welders, post-weld heat treatment, radiography, and training for on-time project delivery.

Explore how ASME codes along with API, ASTM, AWS, MSSP, and NACE guide refinery piping, welding, heat treatment, color coding, heat numbers, and division 1 acceptance criteria.

Learn ASME code 05 fittings for oil and gas, including carbon steel, alloy, and stainless steel, with socket welds, weld fittings, reducers, elbows, and pump discharge and suction line applications.

Learn flange types—weld neck, socket weld, slip-on, and blind—and codes 16.5 for below 24 in and 16.47 for larger diameters; note bolts, gaskets, and ring-type joints.

Learn how alloying elements such as carbon, manganese, chromium, molybdenum, nickel, silicon, and vanadium influence strength, toughness, corrosion resistance, and welding in refinery piping.

Learn how to read isometric drawings for refinery piping, identifying line direction, elevations, pipe materials, fittings, code, design pressure and temperature, and related GA, P&ID and process flow diagrams.

Explore isometric drawing concepts for piping, including welded 12 inch stainless steel pipe with schedule 10s, fittings like reducer, flange class 150, spiral wound gasket, and related material codes.

Learn copper slag grit blasting as an alternative to sand, following ISO 8501-1 and SA2.5 to achieve a 40–60 micron surface profile and primer application within four hours.

Learn piping color painting using the ral color system with numerical codes, apply inorganic zinc silicate primer to carbon steel below 400°c, achieve 65–90 microns dft, and install multi coats.

Learn copper slag blasting techniques using a compressor-driven system with water separation, pressure regulation, and mixing valves to propel abrasive copper slag through a nozzle for surface cleaning.

Learn SA-2 blasting for oil and gas piping, using garnet or copper slag with pressure film and dial gauge to achieve surface profiles measured by a profile gauge.

Learn to use pressure film for blasting roughness checks and color-coded films for different steel types; measure dry film thickness with a dft meter and identify painting shade.

Prepare the loop file and test pack, verify radiography clearance and line history sheets, then clear the LHS via isometric drawings and apply the LTT for hydro test pressures.

Learn hydro test procedures for carbon steel and stainless pipelines, including chlorine content limits, water quality, demineralized water use, 1.5x design pressure, ASME B31.3 guidance, and safety measures with psv.

Outline hydro test setup with psv at 110 kg/cm2, calculate water using d^2 l / 3.14, include 16.20/16.21 gasket and punch points A, B, and C, finishing before 2 pm.

Apply three-layer polyethylene wrapping coating to underground piping, perform welding, NTT radiography, and hydro testing, then verify adhesion and detect holidays with puller and holiday tests.

learn how cathodic protection prevents underground pipeline corrosion by directing current from an anode to the pipe, making the pipe a cathode and diverting corrosion.

Inspect tank bottom plate welds using a vacuum box to reveal porosity or cracks by bubble activity, and use ampere and voltage checks with filler gauges to align the pump.

Learn how a vacuum box test checks tank bottom plate welds and how magnet testing distinguishes carbon steel from stainless steel, guiding orifice plane grinding and reporting before handover.