Certification of Personnel in Non-Destructive Testing (NDT)

We certify personnel involved in the execution of non-destructive testing (NDT) in the industrial, railway, and civil sectors

Certificazione del personale addetto ai CNDThe certification for personnel involved in NDT in the industrial, railway, and civil sectors covers all major national and international regulations such as ISO 9712, SNT TC 1A, API, LG ANSFISA, RINA Regulations, and Circular No. 633 for existing building inspections. 

The key benefits of certification include: 

Our main methods 

Explore the main methods we use and contact us to discover all the services we offer.

Non-destructive testing with eddy currents is applicable to conductive materials to detect surface and subsurface imperfections. The physical principle is based on inducing alternating magnetic fields in the material under examination through coils, generating an electromotive force that causes current circulation. Discontinuity presence, such as a conductivity variation, is detected by the coil as changes in phase and impedance modulus. This technique is used in various sectors, including aviation and industry, for testing tubes during production, automating in-service checks of heat exchangers, and measuring the thickness of paints or protective coatings. 

Radiographic testing is used to verify the integrity of welds and castings, extending to areas such as art and concrete structure inspection. Utilizing high-energy radiation like X-rays or gamma rays capable of penetrating substantial steel thicknesses, the examination produces two-dimensional images with variations in shades of gray on radiographic or digital supports. Variations in gray tones in the images allow for evaluating the component's integrity. 

The second-level strain gauge course is intended for engineers and technicians involved in strain gauge selection and installation, conducting tests, and analyzing results. The course delves into theoretical and practical aspects to access the certification exam for personnel involved in strain gauge testing according to ISO 9712. 

The Radiographic Film Interpretation (RT-FI) course aims to equip users with the necessary skills to objectively evaluate radiographic images. It covers detailed regulatory aspects, providing a critical understanding from both documentary and compliance perspectives and correct interpretation of manufacturing discontinuities. 

Non-destructive testing using liquid penetrants is employed to assess the integrity of a sample by detecting surface defects using a liquid that penetrates discontinuities. This method relies on capillary tubes, utilizing the liquid's ability to rise in capillary tubes, influenced by chemical-physical characteristics such as viscosity and surface tension. The penetrating ability of the liquid defines the examination's sensitivity, making this method ideal for rapidly, economically, and accurately detecting cracks, porosity, and folds. 

The magnetic particle method, commonly considered for detecting surface defects, can also identify subsurface defects. To perform the inspection, the piece to be inspected must have ferromagnetic properties. The method is based on the leakage of magnetic flux caused by the magnetization of the piece at a discontinuity. The dispersed flow must have sufficient intensity to clearly indicate the defect, locally densifying the magnetic particles. 

Radioscopy extends the radiographic method, generating real-time digital images (Real-Time Radiography - RTR). Its speed allows for the rapid inspection and assessment of a large quantity of products, with the possibility of storage. Primarily used in lightweight alloy die-casting (automotive and aerospace), it also finds applications in the inspection of carbon fiber components. 

Thermography is based on the principle that bodies emit electromagnetic radiation in the infrared field when their temperature is above absolute zero. A camera sensitive to temperature differences converts radiation into a thermal image of the object. This flexible technique has civil applications in detecting thermal bridges, moisture, and preserving artworks. In the industry, it is used to check electrical panels and photovoltaic panels, search for gas leaks, inspect composite materials and sandwich structures, and for predictive maintenance to identify friction-related phenomena. 

Ultrasonic testing is a volumetric method that evaluates the internal integrity of the material by detecting discontinuities through acoustic waves. This examination is crucial to ensuring material homogeneity and integrity, revealing defects such as solid inclusions, gaseous inclusions, or cracks. Ultrasonic probes generate waves that penetrate the piece, reflecting from internal discontinuities or the bottom. The displayed signals indicate the operator's presence of any internal defects, allowing for an accurate assessment of material quality. 

Visual examination is the first and most important non-destructive testing method specified by UNI EN ISO 9712. It is conducted without altering, changing, or destroying the material, using only the eyes or magnifying devices. This method allows for identifying and classifying surface imperfections through direct observation or with the aid of lenses, mirrors, endoscopes, and other tools used for defect visualization. Despite being the least understood and utilized, visual examination is essential to ensuring material quality. 

Certification Process

- The company submits a request for an offer. 
- We issue a customized service proposal based on the company's expressed needs, and the contract is signed upon acceptance. 
- Qualification tests are conducted according to the required regulations. 
- The qualification report is issued, including the final minutes from the appointed examination committee. 
- The certificate is issued following a positive examination outcome. 
- Automatic pre-notification system activation for the company regarding certificate expiration. 

Why Choose RINA? 

Our extensive experience allows us to operate in the industrial, railway, and civil sectors, leveraging well-established skills. 

With a team of 80 certified level 3 operators among employees and collaborators, we excel in the above-mentioned testing methods. 

Through our examination centers located all over the nation, we have been actively involved in certifying personnel for non-destructive testing for decades. Upon request, we can organize examination sessions at mobile locations, such as the client's premises. 

RINA is accredited by ACCREDIA for certifying personnel conducting Non-Destructive Testing in accordance with ISO 9712 (industrial sector), ISO 9712 + LG ANSFISA (railway sector), UNI 11931 (civil sector). 

Rules for the industrial sector

- RC/C 14. 15/04/2024 edition
- RC/C 14A. 01/02/2023 edition
- RC/C.14 Annexes

General documents

- General terms and conditions for the certification of systems, products, personnel and inspection activities
- Rules for the use of RINA certification logo
- Complaints, observations and appeals
- General rules for the certification of persons

You may also like

Polyethylene pipes and fittings welders

Rail welding systems - EN 15085

Welders and metal welding processes

Cathode protection specialists