What is ISO/TR 18047:2016 ?

Title: Understanding EN ISO 17638:2016: The Technical Standard for Visual Testing of Fusion-Welded Joists

Welding is a vital process that is used in various industries, including manufacturing, construction, and transportation. Ensuring the quality and integrity of welded joints is crucial to prevent failure and ensure the safety of the welded components. To achieve this, technical standards like EN ISO 17638:2016 are established. This article will explore the purpose and key elements of this standard, which provides guidelines for the requirements and methods of visual testing of fusion-welded joints.

Purpose of EN ISO 17638:2016:

The purpose of EN ISO 17638:2016 is to provide a comprehensive framework for conducting visual inspections of welded joints. Visual inspection is an essential method for detecting surface imperfections, such as cracks, porosities, and discontinuities that may compromise the strength and functionality of the welds. This standard establishes specific criteria and acceptance levels for assessing these imperfections based on their type, size, and location.

Key Elements of EN ISO 17638:2016:

EN ISO 17638:2016 provides a detailed framework for visual testing of welded joints. The standard consists of several key elements, including:

Criteria for Visual Inspection:

The standard outlines the criteria for visual inspection of welded joints, including the types of visual defects that can be identified, the location of the defects, and the severity of the defects. These criteria are based on the type, size, and severity of the visual defects and are used to determine the acceptance level of the welded joint.

Acceptance Levels:

The standard defines the acceptance levels for the different types of visual defects. These levels are based on the severity of the defect, the location of the defect, and the probability of the defect occurring in the weld. The acceptance levels are used to determine whether the welded joint meets the requirements of the standard.

Documentation:

The standard emphasizes the importance of documentation for visual testing of welded joints. The documentation should include a description of the welding process, the welded joint design, and the visual inspection criteria and acceptance levels. This documentation is used to ensure that the visual inspection is conducted according to the requirements of the standard and to document the results of the inspection.

Conclusion:

EN ISO 17638:2016 is an essential technical standard for visual testing of fusion-welded joints. It provides a comprehensive framework for detecting surface imperfections and establishing acceptance levels for the welded joints. By following the guidelines outlined in this standard, manufacturers and inspectors can ensure that welded joints meet the requirements of the standard and are of the highest quality.