July 2022. Review Article | July 05 2022. Progress in in situ x-ray imaging of welding process. Special Collection: Operando systems for synchrotron studies of …

Methods of Mitigating the Exposure from Electromagnetic Fields during Welding. 1. Use an EMF Meter to Monitor the Levels. To prevent your exposure to intense levels of EMF radiation, calculate the radiation levels when welding. To …

The Weld-neck flange is attached to pipe or fittings with a Butt-weld. ... (one on the out side and one on the inside). These welds do not allow for proper X-ray weld quality verification. RE: Weld Neck vs Slip-on Flange Application IFRs (Petroleum) 14 Mar 08 23:22. For plant piping, we use slip-ons unless the flange is being welded directly to ...

Last updated on September 5, 2023. Manufacturers use industrial radiography to check for cracks or flaws in their products. …

1.1 Background. The processes most widely used for repair and refurbishment in nuclear environments are Tungsten Inert Gas (TIG), Metal Inert Gas (MIG) and Manual Metal Arc (MMA) welding. Although both …

X-ray wavelengths are shorter than those of UV rays and typically longer than those of gamma rays. The distinction between X-rays and gamma rays is not so simple and has changed in recent decades. ... Radiographic testing is commonly used for weld verification in various industrial applications. In manufacturing, welds are commonly used to join ...

In comparison, even though the EDS maps of the joints formed with the conventional Al–Si welding wire showed a concentration of Si particles in the fusion zone, the x-ray radiation attenuation similarity of Si and Al do not allow in-plant detection of weld penetration for common filler wires using x-ray CT or radiographic analysis.

Applied Technical Services offers X-ray weld inspections for various industries, including automotive, aerospace, infrastructure, construction, and more. Our technicians inspect …

Radiographic Weld Testing. Also known as x-ray inspection, radiographic testing involves the use of commercial x-ray or gamma units to examine visible discontinuities on the interior of the weld, including: – …

RT and UT are volumetric tests. RT uses X-rays to create a 3-D image of the weld, whereas UT uses sound waves to find discontinuities in the weld. MT and PT. Surface cleaning is necessary to prepare the welds for either MT or PT. Conditioning, or grinding, also is used to smooth out these areas for surface inspection.

Weld end preps, for manual welding of heavy-wall pipe (1-1/4 inch and greater), typically use a compound bevel, where the first 5/8 inch (coming out from the root) consists of a 30 degree bevel ...

X-ray fluorescence (XRF), another technique involving ionizing radiation, is used to inspect paint for the presence and quantity of lead. There are different types of industrial radiography devices 1: X-ray industrial radiography devices are powered by electricity. When the device is turned it, it produces X-rays; when it is turned off, it does ...

The weld defects inspection from radiography films is critical for assuring the serviceability and safety of weld joints. The various limitations of human interpretation made the development of innovative computer-aided techniques for automatic detection from radiography images an interest point of recent studies. The studies of automatic …

Based on the methodology we employ, including the creation of a new dataset through manual segmentation and the use of data augmentation and fine-tuning …

3.1- X-Radiation: The radiography testing techniques shall demonstrate that the required radiography sensitivity has been obtained. Maximum x-ray voltage is 300 KV. 3.2- Gamma radiation: The recommended minimum thickness for which Radio-active isotopes may be used as follow: Iridium192. Copper or high nickel copper.

Radiograph Interpretation - Welds. In addition to producing high quality radiographs, the radiographer must also be skilled in radiographic interpretation. Interpretation of …

Keywords: Weld defects, nondestructive testing, radiography, automatic weld inspection, image analysis. 1. INTRODUCTION The first experiments to detect weld defects using X-rays took place at the laboratory scale at Yale University in 1896, barely one year after the dicove ry of X- rays by Wilhelm eConrad Röntgen in Germany [1].

The execution standard of steel pipe welding is "GB/T31032-2014 Welding and acceptance standard for steel pipings and pipelines". Weld quality control standards are weld height of 0–2mm, and local not more than 3mm and length not more than 50mm, the amount of misalignment is not more than 0.1T (T is the thickness of the thinner position …

ASME standards govern pressure vessel welds and there are two types of inspections that are common: X-ray and ultrasonic inspection. X-ray Inspection. X-ray inspection can detect subsurface cracking and inclusions, but it is extremely expensive. For critical weld joints such as in nuclear plants and submarines, only X-ray testing is …

Re-radiographing the weld with a different radiographic source: Another technique to determine indication relevancy is to change the radiographic testing (RT) source from X-ray (machine generated) to a radioisotope source.Figure 7 shows the weld shown in Figure 2 reshot, obtaining the same overall film density as Figure 2 using iridium 192 (Ir-192) with …

Weld X-ray inspection. Detect tiniest welding defects like porosities, cracks and inclusions through high end digital, CR and film X-ray inspection with systems from VisiConsult.

Automating inspections on the production floor. Waygate Technologies' powerful X-ray inspection and CT technologies aren't just for lab environments anymore. With support from our experienced team, we can help you integrate 2D and 3D inspections into your manufacturing processes to quickly reveal hidden defects, changes in thickness ...

group was development of visual weld acceptance criteria and inspection guidance for structural welds. This report documents the results of this NCIG activity and is composed of: Volume I Visual Weld Acceptance Criteria for Structural Nelding at Nuclear Power Plants (NCIG-Ol, Revision 2) Volume 2 Sampling Plan for Visual Reinspection of fields ...

RT uses X-rays to create a 3-D image of the weld, whereas UT uses sound waves to find discontinuities in the weld. MT and PT. Surface cleaning is necessary to prepare the welds for either MT or PT. …

APS specializes in welding stainless steel tubing for food processing plants, breweries and pharmaceutical plants. Typical work is 10 days on, 4 days off.… Typical work is 10 days on, 4 days off.…

X-ray and gamma radiographic examination of weldments, castings, shop fabrication, and plant piping systems using film, Computed Radiography (CR) or Digital Radiography (DR) imaging; Internal or external exposure …

Using X-ray inspection for welds is popular in industries such as aerospace, oil & gas, nuclear power plants and shipbuilding due to its accuracy when it comes to detecting potential defects. ... X-ray weld …

X-ray images are an important industrial non-destructive testing method. However, the contrast of some weld seam images is low, and the shapes and sizes of defects vary greatly, which makes it very difficult to detect defects in weld seams. In this paper, we propose a gray value curve enhancement (GCE) module and a model …

X-rays are produced by an X-ray tube, and gamma rays are produced by a radioactive isotope. The basic principle of radiographic weld inspection is the same as that of medical radiography. Penetrating radiation is passed through a solid object (in this case, a weld rather than part of the human body) onto photographic film, creating an image of ...

The detection of weld defects by using X-rays is an important task in the industry. It requires trained specialists with the expertise to conduct a timely inspection, which is costly and cumbersome. Moreover, the process can be erroneous due to fatigue and lack of concentration. In this context, this study proposes an automated approach to …