Radiographic Testing (RT) is a non-destructive testing method that utilizes ionizing radiation, such as X-rays or gamma rays, to detect defects within the internal structure of a material. This test is based on the principle that radiation is absorbed or scattered differently as it passes through regions of varying density within the material. Consequently, cracks, voids, holes, or other internal defects can be visualized on film or a digital display.

Some of the key standards used internationally for radiographic testing include:

• ISO 17636: The fundamental standard governing the execution of industrial radiographic testing procedures.
• ASME (American Society of Mechanical Engineers) Standards for Radiographic Testing of Pressure Vessels and Piping: Standards covering RT applications in various industrial sectors, specifically for pressure vessels and pipelines.
• API 1104: The American Petroleum Institute standard established for radiographic testing in applications such as oil and gas pipelines.

Radiographic inspection is generally performed using the following steps:

1. Preparation and Cleaning: The surface of the material to be tested is cleaned. Substances such as dirt, oil, and rust can affect test results.
2. Positioning the Radiation Source: An X-ray or gamma-ray source is positioned on one side of the material to be tested, while a film or digital detector is placed on the opposite side.
3. Radiation Emission: The radiation source is directed at the material. The rays pass through the material and are absorbed or scattered based on density differences within its internal structure.
4. Image Acquisition: As the rays pass through the material, an image is formed on the film or detector. If defects are present, these areas appear with varying densities.
5. Image Evaluation: The resulting film or digital image is examined to identify potential defects (cracks, voids, etc.) in the material.
6. Reporting Results: The test results are presented in a report. This report specifies the location, size, and type of any defects.

Radiographic Testing is widely used, particularly in the following areas:

• Oil and Gas Industry: Used to detect internal defects in pipelines, reservoirs, and other oil and gas infrastructure.
• Aerospace Industry: Detection of flaws in the internal structure of critical components such as aircraft and rockets.
• Automotive Industry: Checking for internal defects in automotive engines and other metal parts.
• Energy Sector: Identifying defects in critical materials within high-risk energy infrastructure, such as power plants and nuclear reactors.
• Machinery Manufacturing: Detection of defects—particularly weld-related ones—in machinery and equipment requiring high durability.
• Construction and Infrastructure: Detection of internal cracks and defects in concrete and metal structures.

Radiographic Testing requires specific equipment and techniques:

• Radiation Source: X-ray tubes or gamma-ray sources (e.g., radioactive materials such as Cobalt-60 or Cesium-137) are used.
• Film or Digital Detector: Equipment used to capture images of the radiation passing through the material and to visualize any defects within it.
• Protective Equipment: Specialized protective clothing, shields, and safety devices are used during testing to protect against the adverse health effects of radiation.
• Radiographic Testing Devices: Devices that enable the analysis of images using digital displays or film.
• Software and Analysis Tools: Software used in digital imaging systems to analyze test results and detect defects.

• Detection of Internal Defects: Radiographic inspection can detect defects within the material, including deep-seated cracks and voids.
• Permanent Records: Film or digital images provide a permanent record of the test that can be used for future evaluations.
• High Sensitivity: It can accurately determine the size and type of defects.
• Non-Destructive Testing: No damage is caused to the material, ensuring the test is conducted safely and efficiently.
• Wide Range of Applications: It can be applied across various industries and different types of materials.

• High Cost: Procuring X-ray tubes, gamma-ray sources, and film or digital detectors can make RT testing more costly compared to other methods.

You can contact us to learn more about Radiographic Testing (RT) or to develop solutions tailored to your specific needs. Our team of experts enables you to quickly detect internal defects in your materials through safe and effective testing solutions.

Get in touch with us or reach out using the contact details below:

• Phone: +90 (850) 480 88 10
• E-mail: info@experte.com.tr
• Address: İçerenköy Mah. Değirmen Yolu Cad. Kutay İş Merkezi D No: 20 İç Kapı No: 11 Ataşehir / Istanbul

Contact us to manage your testing processes safely and efficiently!