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NDT on Shafts

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  Non Destructive Testing,NDT on Shafts is considered essential , because the shafts are mostly made as load bearing structures, any defects such as cracks will propagate more during acting of load and eventually will cause failure. The most possible defects in shafts are Cracks and Pipes , which is shown below The Non Destructive methods preferred for defect detection on raw material shafts are Ultrasonic Testing, Magnetic Particle testing / Eddy Current Testing / Magnetic Flux Leakage method. We have not discussed about other NDT methods such as Liquid Penetrant testing & Radiographic testing because for raw material inspection. These methods will be cost effective for raw material testing  ( i.e. most costly and labor intensive, also there is possibility of missing out the cracks in radiography testing due to orientation of crack ) The Defect wise identification method is given as below  , Internal Defect ( Piping ) – Ultrasonic Testing Surface Defects  (C rac...

Types of Weld Joints

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  Here we are going to see about two types of weld Joints Groove Welds Fillet Welds Dimensions 1.1.  Groove Welds: In the following figures, the perspective drawings of types of weld joints are shown at the left, looking at each joint from the arrow side. The illustrations cover only a small number of all possible symbols.  The symbols shown here are those of the most common manufacturing application. 1.2 Fillet Welds Dimensions: Dimensions of fillet welds must be shown on the same side of the reference line as the weld symbol. When fillet welds are indicated on both sides of a joint and no general note governing the dimensions of the welds appears on the drawing. OBS.:  If the dimensions of one or both welds differ from the dimensions given in the general note, both welds must be dimensioned. The size the fillet weld with unequal legs must be shown in parentheses to left of the weld symbol. 2. The length of a fillet weld, when indicated on the welding symbol, must b...

RT acceptance Criteria

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  RT ACCEPTANCE CRITERIA AS PER ASME SEC VII DIV-1 for PRESSURE VESSEL RT ACCEPTANCE CRITERIA AS PER ASME SEC IX for TEST Pieces WQC/PQR RADIOGRAPHY TESTING ACCEPTANCE CRITERIA AS PER ASME B 31.3 CHEMICAL AND  PETROLEUM PLANT and PROCESS PIPING To learn more on NDT training, NDT courses and NDT Training Institute for specific ndt methods, feel free to contact us at  https://aqcinspection.com/training/  . For services on radiography testing services and other NDT services and Mechanical testing services contact us. Visit our technical and career updates at our Blog site  https://advancedqualitycentre.blogspot.com  .  https://ndtcenter.blogspot.com  our website  https://aqcinspection.com/news-events/   for many more blogs

Welder Qualification at Messer Industries, Coimbatore

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  we provide  standard specifications for welding inspection procedures  for all welding process and Brazing. We offer Welder Procedure Specification, Welder Certificate Renewal Process, Procedure Qualification Record, Welder Qualification Testing, welder Training and Welder qualification services  in Coimbatore, Trichy, Salem, Erode, Chennai.

Oil and gas jobs

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   Below are the list of Oil Gas Companies  which might guide the Job seekers to apply and get oil and Gas Jobs opportunities / foreign jobs . People with various qualifications as Engineers of Process Engineering, Designing, Non Destructive Testing NDT, Welding Inspection, Instrumentation,  HVAC, Mechanical Engineering, Civil Engineers and Lot more look forward to work in projects of Oil & Gas Extraction, Processing and Plant Constructions . Oil and Gas Companies Below are the list of Global Leaders involved in Oil & Gas Projects . Shell Saudi Aramco Total Gas Exxon Mobil Enterprise Products Bharat Petroleum Adani Total Gas Chevron Petro China Conoco Phillips Equinor Duke Energy Enbridge Gazprom Southern Company Petrobras Sinopec Rosneft TC Energy EOG Resources Canadian Natural Resources CNOOC Novatek Occidental Petroleum Pioneer Natural Resources Suncor Energy Schlumberger Sempra Energy Lukoil Valero Energy Philips 66 Kinder Morgan Williams Companies Cenovu...

WELDING INSPECTION DUTIES

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  Welding Inspection duties General   Conditions:    Understand shop drawings, erection drawings, referenced codes and standards. Review the manufacturer’s  Material Test Report (MTR) . Verify all materials properties and that all materials are readily identifiable and traceable to an MTR.    Conduct a complete visual examination of the welding area for visible discontinuities. Visual examination should include, as a minimum, the finished conditions of the seam weld.    For visual examination, the only equipment commonly used is a  magnifying glass  (10x or less) and a  flashlight . Other tools, such as a  borescope and dental mirrors , are useful for inspection inside vessels, pipe, or confined areas.    For structural plates, piping, wrought and cast steel, conduct a complete visual examination of surfaces for visible fabrication defects or discontinuities.    Verify that all applicable welders, weldi...

Steel Making Process

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   Steel is an alloy of iron usually containing   less than 1.5% carbon . Steel can be cast into bars, strips, sheets, nails, spikes, wire, rods or pipes as needed by the intended user. Steel making process  at an integrated steel plant involves  three basic steps . First, the  heat source  used to melt iron ore is produced. Next the  iron ore  is melted in a furnace. Finally, the molten iron is processed to  produce steel . The fuel source is often purchased from off-site producers. Steel is made by the Bessemer, Siemens Open Hearth, Basic Oxygen Furnace, Electric Arc, Electric High-frequency and Crucible processes. In the former steel making process, molten pig iron is  refined  by blowing air through it in an egg-shaped vessel, known as a  converter . In the Siemens process, both acid and basic, the necessary  heat  for melting and working the charge is supplied by  oil or gas . Coke  is a solid carb...

Training Institute for Welding and NDT

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  Equipment’s required for Welding Institute set up. Welding is a process of joining metals or nonmetals such as plastic. There are different types of welding, and few of them are as below. SMAW- Shielded Metal Arc Welding (commonly called as ARC welding in the locality ) GMAW – Gas Metal Arc Welding – MIG /MAG GTAW – Gas Tungsten Arc Welding / TIG – Tungsten Inert Gas Welding FCAW – Flux Cored Arc Welding ERW – Electric Resistance Welding FSW – Friction Stir Welding SAW – Submerged Arc Welding LW – Laser Welding EBW- Electron Beam Welding GW- Gas Welding Ultrasonic welding And much more. A welding process can be done as Manual or Semi- Automated or Automatic / Robotic. To start up a  basic welding Institute it essential to have at least the basic three welding machines – SMAW , GTAW and GMAW welding machines And machines of Gas Welding , EBW and Laser Welding machines will be of added advantage. The training institute for welding should have a complete set up of Welding booth...

Material Testing

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  Material testing Mechanical testing  have been designed to test several weld properties.Few other material testing techniques are Charpy V-Notch Toughness: Notch toughness is the capacity that a material possesses to  absorb energy  in the  presence of a flaw , such as a notch or crack. The material will likely exhibit a lower level of toughness. When a flaw is present in a material, loading induces a triaxial tension stres s state adjacent to the flaw. The material  develops plastic strains  as the yield stress is exceeded, near the crack tip. Notch-toughness is  measured with a variety of specimens  such as the  Charpy V-notch impact  specimen or the dynamic tear test specimen. As with regular impact testing the tests are often repeated numerous times with specimens tested at a different temperature. With these specimens and by varying the loading speed and the temperature, it is possible to  generate curves such as those s...