Visual and dimensional checks
Visual testing in non-destructive testing (NDT) is one of the simplest techniques for identifying superficial or naked-eye defects that are based on direct observation of the object to be inspected, without causing permanent damage. It requires some experience and expertise on the part of the inspector to correctly identify and evaluate the detected defects, carefully examining the surface of the material or component for any signs of defects, damage, corrosion, cracks, faulty joints, irregularities or other anomalies .
C.M.C Sud is particularly specialized in remote visual control with cameras or latest generation 3D video endoscopes.
Dimensional checks in non-destructive testing (NDT) are a type of inspection used to verify the dimensions, shape and geometric conformity of a component or object without causing permanent damage to the material. These checks, which can be performed in different ways, are important to ensure that products are manufactured precisely, that they comply with design standards and that they meet the necessary quality requirements. Dimensional checks are essential to certify the correct functioning and reliability of the products.
Welding inspection
Welding inspection is a crucial aspect of quality control in welding processes, ensuring that welded joints meet specified standards, design requirements and safety criteria. The objective of weld inspection is to identify and address any defects, inconsistencies or deviations that could compromise the integrity and functionality of the welded structure. This process involves a systematic examination of welding materials, procedures and completed welds.
Here are the key aspects of welding inspection:
Effective weld inspection is essential to maintaining the structural integrity and safety of welded components in various industries, including construction, manufacturing and aerospace. Inspectors may be certified and follow specific standards such as those established by organizations such as The Welding Institute (TWI) or the International Institute of Welding (IIW).
- Material inspection: Before welding begins, inspectors examine the materials to be joined. This includes quality control and documentary verification of base metals, fill materials and any prefabricated components. The inspector ensures that the materials conform to the specified standards and are free from defects.
- Review of the Welding Procedure Specification (WPS): Inspectors evaluate the Welding Procedure Specification, which describes the specific parameters and methods to be followed during welding. This includes details such as welding processes, pre-heat temperatures, welding parameters and post-weld heat treatments.
- Qualification of the process and personnel: it is a process that verifies and certifies the correctness of the WPS and the competence of the welders in accordance with the applicable standards and specifications, through practical welding tests on specimens, followed by non-destructive checks and laboratory tests.
- Inspections and audits: inspectors verify in the field and supervise welding and non-destructive testing activities, ensuring that they are carried out in compliance with applicable procedures and standards.
5. Visual and dimensional inspection: The most common form of inspection involves a visual and dimensional examination of welded joints. Inspectors evaluate surface irregularities, weld profile, size, shape and overall appearance of the weld. This can often detect problems such as cracks, porosity, failure to fuse, or other visible defects. Additionally, inspectors use measuring tools to verify the dimensions, alignment and overall geometry of the weld.
- Welded Joint Configuration: Inspectors evaluate the welded joint configuration to ensure it meets design specifications. This includes checking the joint type, bevel angles and bevel size.
- Welding Documentation: Inspection also involves reviewing and maintaining documentation related to the welding process, including inspection reports, test results and required certifications.
- Post-weld heat treatment (PWHT) verification: If post-weld heat treatment is necessary, inspectors ensure that the treatment has been carried out according to prescribed procedures and standards.
Inspections and tests: the new cross-check service to make the control of supplies more reliable and certain
The company is always looking for new solutions that make customers' activities more efficient. For this reason it offers the new cross-check service, which makes the verification of supplies more reliable. Previously, the customers used to send their inspectors to carry out formal checks on the documentation prepared by the suppliers before the delivery of the components; with C.M.C. Sud, the customer may employ our "cross-check" service. In this case, the qualified and certified technicians of C.M.C. Sud re-perform random checks on the supply, adhering to the same regulations/specifications and acceptability criteria, compliant with international standards, which regulate the relationships between the Manufacturer and the Customer. With this kind of inspection, the customer has an objective assessment of the compliance of both the supply and the quality assurance process of the manufacturer, as well as an equally objective evaluation of its supplier base. Furthermore, if the partner fabricates and installs its own systems or plants at the final customer’s premises, it can gain a further advantage thanks to C.M.C. Sud experience: they are attended during installation by performing the necessary test and certifying the plant ready for commissioning. This test is fundamental for subsequent periodic structural control actions.
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