Procurement

Welding equipment

The quality of welded joints is very important in nuclear power facilities construction. In the world of welding, Lincoln Electric and Kemppi's materials and equipment deserve the trust of manufacturers. We offer a large range of welding materials produced by Mezhgosmetiz - Mtsensk, OJSC (a part of Lincoln Electric Group) and used in nuclear industry. We always have in stock welding wires 04Х19Н11М3, 06Х19Н9Т, 10Х16Н25АМ6, 07Х25Н13, etc; welding electrodes ЭА395/9, ЭА 400/10Т, ЗИО-8, etc.

Wide range of products and prices of welding sources allow you to choose optimal equipment depending on the tasks you need to solve. Kemppi power supply units for TIG welding are one of the best in terms of reliability, quality of operation, welding performance combination, weight and ergonomics.

The burners which perfectly lie in hand due to adjustable finger support on a bottom part of a handle are also very convenient to use. If necessary, the finger support can be easily removed and moved along the handle. For the convenience of welding processes, a burner head can be rotated and pulled out (in some models). If you want to ensure high quality of gas protection during welding or during welding with electrical stick-out, the burners can be equipped with gas lens. Kemppi product line is presented by both air-cooled and water-cooled burners for welding at high currents. Cables of 4, 8 or 16 m long are hidden inside a flexible sleeve. Welding current is adjusted directly on a burner.

We should pay special attention to MinarcTig 250 welding machine presented in Kemppi product line. The machine of 11.4 kg has an opportunity of arc ignition both from high-frequency discharge and by a smooth arc gap opening (Lift TIG). An opportunity to weld with pulsing current (in case of MLP panel machine purchase) allows avoiding interruptions when welding heat-sensitive metals. The machine can be used not only for argon arc welding, but also for manual arc welding with coated electrodes.

Non-destructive testing equipment

One of the most reliable and proven NDT methods is a radiographic test. This technology is widely used for detection of cracks in welded joints; detection of burnouts, cuts, spills; evaluation of seams concavity and so on. The main advantages of the method is a relatively low cost, simplicity, efficiency and documentation. It should be noted that in many cases it is allowed to test some objects only by means of radiographic tests. Therefore, so much attention is paid to the development of this NDT method. We offer the widest choice of equipment in Russia and consumables for radiographic testing:

  • X-ray crawlers (JME);
  • stationary and portable X-ray generators (ICM);
  • equipment for images processing (Optimax, Colenta, AGFA, ArgoScan);
  • all types of X-ray films and processing chemicals (AGFA Structurix).

One of the most sensitive elements of nuclear power plants is a steam turbine shaft experiencing high mechanical loads at high ambient temperatures. This contributes to occurrence and proliferation of fatigue cracks that can lead to catastrophic consequences. For timely detection of deterioration signs, it is necessary to carry out a scheduled inspection of turbine shafts by non-destructive ultrasonic testing. Ultrasonic ISONIC 2009 UPA Scope and ISONIC 2010 scanners with phased arrays are perfect for such testing. When using a standard control sensor, you will need 6–7 shifts for one shaft inspection. The utilization of phased arrays allows us to reduce this time to one shift. Other areas of scanners application are heat exchanger tubes welded joints testing, rods and flanged connections testing (from neck area and a flange).

Any tasks related to ultrasonic non-destructive testing can be solved using ISONIC utPod ultra-versatile device. This miniature 400-gram device combines the functions of a scanner and a thickness tester. ISONIC utPod is perfect for work in hardly accessible spaces - you can hold the device and scan with one hand.

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