Nondestructive Testing service providers

  What is pressure vessel? Pressure vessel is closed container which holds liquids or gasses at a pressure greater than the atmospheric pressure. Definition of Pressure vessel as per ASME BPVC section VIII , Div 1, U1. Pressure vessel are containers for containment of pressure, either external or internal. This pressure may be obtained from a external source or by application of heat.Heat applied is either by a direct or indirect source, or any combination thereof. Types of pressure vessel based on their purpose : Storage vessel- used primarily for storage of liquids or gases in a pressurized state. Process vessel – vessels in which any of the below operations are performed, separation of products combining products breaking down and removing various elements as by products or impurities (Ex. Separator, reactor, distillation tower, heat exchanger, drums, fractioning tower, etc.) Fired and Unfired pressure vessel Fired pressure vessel – are pressure vessels where ...

  What is welder qualification test? Welder Certificate is a document that shows ability of a welder to make a quality weld in a particular welding process. The Certificate also denotes on which type of welding material and which position the welder is able to perform. A full penetration weld can be performed by welder who is qualified for full penetration & fillet. A welder qualified by vertical position (3G) can perform Flat and vertical in production and so on. These qualification ranges are mentioned in the certificates after referring the applicable codes and standards. Welders are qualified for different process individually. Welding process: Shielded Metal Arc Welding (SMAW)- Arc Welding Tungsten Inert Gas Welding (TIG/GTAW)- Arc Welding Metal Inert Gas Welding (MIG)- Arc Metal Active Gas welding (MAG)- Arc Flux Cores Arc Welding (FCAW)- Arc Electric Resistance welding (ERW) and Lot more.. Welding Qualification standards : AWS D 1.1 ...

  ACOUSTIC EMISSION TESTING (AET) Acoustic Emission Test is a type of Non – Destructive Test method generally used for detecting and locating imperfections in mechanically loaded structures or components. Flaw origination and progression in a stressed component can be identified by acoustic emission test method.This can be done when the component is subjected to repetitive or continuous stress.   PRINCIPLE OF ACOUSTIC EMISSION TESTING AET: When a component with discontinuities is subjected to mechanical load or stress it releases energy. This energy travels in the form of high frequency stress waves. These waves or oscillations are received with the use of sensors which in turn converts the energy into voltage. This voltage is electronically amplified with the use of timing circuits and further processed as AE signal data. STAGES IN ACOUSTIC EMISSION TESTING (AET): External forces acting on a body; the resulting stress causes deformation wit...

  What is pressure vessel? Pressure vessel is closed container which holds liquids or gasses at a pressure greater than the atmospheric pressure. Definition of Pressure vessel as per ASME BPVC section VIII , Div 1, U1, Pressure vessel are containers for containment of pressure, either external or internal. This pressure may be obtained from a external source or by application of heat. Heat can be applied either by a direct or indirect source, or any combination thereof . Types of pressure vessel based on their purpose : Storage vessel- used primarily for storage of liquids or gases in a pressurized state. Process vessel – vessels in which any of the below operations are performed. Seperation of products combining products breaking down and removing various elements as by products or impurities (Ex. Seperator, reactor, distillation tower, heat exchanger, drums, fractioning tower, etc.) Fired and Un fired pressure vessel Fired pressure vessel – ...