Visual testing (VT) & Welding inspection services

Weld Visual Testing Experts. ASNT Level III, IWE and CSWIP Welding Inspectors.

Visual Inspection Services. Weld Joints, Structures, Bridges VT testing. ASNT Level III, IWE and CSWIP Inspection Consulting.

Weld joints as a minimum needs visual testing to explore about the quality of welds made. For this, surface NDT and internal NDT methods are helpful. For testing of Welds, Visual inspection is one of the common and powerful means of non-destructive testing. Weld Visual testing(VT) can gives overall ‘birds eye view’ of the weld joint prior to using other NDT inspection methods. VT is an a vital tool in preventive maintenance of components. As the cost is minimal, VT can be used almost at every stage of manufacturing. In summary, VT inspection is a useful method for controlling process quality.

Conditions Suitable for Visual Inspection

Visual testing requires proper lighting of the weld and adjacent surfaces and clear eye-sight for the VT Level 2 inspector. To be truly
effective visual inspection does however, merit special attention because it requires training (knowledge of welding process, anticipated
service conditions, acceptance standard, documentation, for example) and it has its own range of VT equipment. It is also a fact that all
defects found by other NDT methods at the end are verified by visual inspection methods.

Visual testing Techniques

Visual testing requires proper lighting of the weld and adjacent surfaces and clear eye-sight for the VT Level 2 inspector. To be truly effective visual inspection does however, merit special attention because it requires training (knowledge of welding process, anticipated service conditions, acceptance standard, documentation, for example) and it has its own range of VT equipment. It is also a fact that all defects found by other NDT methods at the end are verified by visual inspection methods.

Borescope, Fibrescope Inspection

This Visual testing NDT method is even suitable for in-service inspection Pipes and heat exchanger tubes using borescope or fibrescope method of inspections. Aerospace engine components such as turbine blades and other difficult to access parts are tested using borescope and firbrescopes. The test results are records for future use. Development of devices for visual testing is happening at much faster pace. This make possible to use this method at many area where earliest is NOT used.

Procedure for Visual Testing of Welds

Welds visual testing is performed at 3 stages i.e. before start of welding, during the welding and after completion of welding. For example verify root gap, bevel angle etc before welding, check interpass temperature, removal of slap during welding and check for visual defects, undercuts, reinforcement, penetration after welding.

Visual testing Procedure for Welds

Prepare a VT testing procedure
Choose acceptance norms based on application of weld
Check personnel Qualification
Clean weld and adjacent areas
Remove paint, rust, dust etc
Do VT testing
Record the image/video using camera if needed
Complete the document (VT Test Report format Dowload)

Onsite Services in Bangalore for Visual Testing

Trinity NDT‘s Visual testing Weld Inspection services are quite professional. The Visual testing services are offered from our Centre of Excellence in Welding, Peenya Industrial Area, Bangalore, India. We have complete range of light meters, welding gauges, magnifiers, lenses, other measuring instruments and equipment for VT testing. Our VT Level 2 inspectors, engineers and technicians are qualified to NDT Level 1, Level 2 as per written practice prepared according to written practice ASNT SNT-TC-1A. In addition, in-house we engage ASNT Level 3 (Visual testing) for inspection and consulting services on visual inspection of welds. Know more about updates on visual inspection of welds visit Ravi Trinity NDT Blog.

Also, if you are interested to learn VT, we offer training, certification on Visual inspection VT Level 2 and Level 1 as per ASNT SNT TC 1A at our centre in Bangalore, India. Find more details about our visual testing VT Level 2 training certification services from our centre in Bangalore. We also serve our welding Visual inspection services in Hosur, Mangalore, Mysore, Shivamogga, Bellary and Belgaum in Karnataka state of India. The NDT centre also have CSWIP certified welding inspectors and IWE/IWT (IIW) welding engineer experts and therefore customers can get reliable results. Each visual examiner has over 20 years of impressive experience on testing of welds on pressure vessels, pipe lines, tanks and other critical weld joints.

With our welding experts and world class testing infrastructure, we are just phone call away from you. Call us now on phone +91 9844129439 / 9141339969 and experience award winning services on NDT and Welding.