Non-destructive testing lab
Safe Technologies Industrial Group features in-house non-destructive testing laboratory, which is certified in the limits of RF industrial safety system. The lab is equipped with modern tools and measuring instruments and has in its possession everything necessary for precise diagnostics of the equipment intended to the installation on the potentially hazardous industrial facilities. The presence of the in-house testing lab ensures 100% quality of the procured equipment and shortens terms of its manufacturing.
The following methods are used:
- Visual and dimensional inspection. This kind of inspection is dedicated to preparation of the parts before welding, the quality of welds and welded equipment. It is applied almost in 100% of cases for the revealing of burrs, rust, burns, lapping and other defects.
- Ultrasonic fault detection. This method is based on capabilities of ultrasound to spread inside the object, being reflected in borders of the materials. 5 ways of conducting the ultrasonic tests are available: echo, shade, mirror-shade, mirror and delta methods. The ultrasonic test does not affect the integrity of the parts being tested.
- Ultrasonic thickness measurement. This method is based on the electromagnetic-acoustic way of sending and receiving ultrasound waves. The ultrasonic thickness analysis is carried out for the purpose of detecting actual values of wall or structure thickness in inaccessible places. This method is considered to be the most precise.
- X-ray control. The X-raying is carried out in accordance with the GOST 7512-82, ‘Radiographic control of the welding seams’. This kind of testing is dedicated to the control of welding in vessels and pipelines, metal structures made of steel and alloys with the purpose of detecting cracks, no penetrations, pores, slag, etc. in weld seams. This way of controls is very effective in locations inaccessible for other kinds of testing.
- Acoustic emission tests. In this test the very material is made a source of the sound. Thus one detects the development of a faulty object, the moving cracks. The instruments are very sensitive and allow revealing crack increasing in mkm range.
- Liquid penetration tests. Liquid penetration or dye penetration test is a method used to locate surface-breaking defects in all non-porous materials. LPI is used to detect casting, forging and welding surface defects such as hairline cracks, surface porosity, leaks in new products, and fatigue cracks on in-service components. It is based upon capillary action, where low surface tension fluid penetrates into clean and dry surface-breaking discontinuities. This method is applied where visual inspection yield no results by the reason of minuscule defects.
- Magnetic particle detection. This kind of detection is dedicated to revealing faults in ferromagnetic alloys, such as, hairline cracks, non-metallic encrusting, lack of fusion, etc. This method is used on surface of the equipment or not deeper than 2-3 mm.
- Eddy current testing. In an eddy current testing a circular coil carrying current is placed in proximity to the test specimen (which must be electrically conductive).The alternating current in the coil generates changing magnetic field which interacts with test specimen and generates eddy current. Variations in the phase and magnitude of these eddy currents are monitored using a second ‘receiver’ coil. Variations in the electrical conductivity or magnetic permeability of the test object, or the presence of any flaws, will cause a change in eddy current and a corresponding change in the phase and amplitude of the measured current. Eddy-current testing can detect very small cracks in or near the surface of the material, the surfaces need minimal preparation, and physically complex geometries can be investigated. It is also useful for making electrical conductivity and coating thickness measurements. This method features a possibility of the testing without the contact of the equipment and tested detail; moreover, fast moving objects also can be tested.
