The Visual Examination of the welds will be performed previously, during and quick after welding. Consistency of surface, tidiness and sharp edges can be checked conclusive finishing of manufacture.
- Lighting Conditions
Visual assessment will be performed insufficiently bright condition having the least light force of 1000 Lux at the assessment surface. Lighting utilized might be common light or 100-Watt electric bulb at suitable separation as estimated by lux meter.
- Surface Roughness
The surface to be analyzed will be free from all dirt, build-up, oil, scale or slag. The surface unevenness esteems will be according to the illustration necessities. Weld surface abnormalities can be evacuated by grinding. While doing grinding for the expulsion of weld surface abnormalities, the ground surface will be smooth without leaving any sharp corner.
- Position of the inspector with respect to the job condition
Direct visual assessment will be completed at areas where adequate access is possible with the greatest separation between the test surface and the eyes are 600 mm. The point between the eyes and the test surface must be more than 30 degrees from the test surface. Amplifying focal point can be used for recognizing the discontinuities.
Visual Examination of Surface
Inspection equipment should be in a perfect condition to permit visual review – if not, traditional cleaning, wire brushing, chipping, grinding, granulating or a blend of these might be done. Ensure the complete accessibility of equipment for proper visual inspection. Check whole inside and outside surface of the device for any uniformity problem. Guarantee all tack welds and curve strikes are dressed appropriately and there are no weld splashes. Check inside the equipment for debris gathered during cleaning. The equipment is to be cleaned using ordinary strategies or by dry air. All residue, rust, slag and so on must be evacuated utilizing moist cotton waste.
Visual Examination during various stages of fabrication
The only qualified welder should perform welding according to parameters determined in relevant Welding Procedure Qualification. Welding procedure specification will be accessible in the area of the welder at the time of welding. Welder qualification record will be accessible with assigned Welding Engineer. In the event that welding is to be performed with a prepared electrode, which is set in a convenient welding oven, the cover of the compact holding broiler must be in shut condition. On the off chance that the welder has discovered welding by keeping the versatile holding broiler top open, at that point Welding Engineer will subject the whole length of welding which he has performed under this condition to examination.