Nuclear steam generator inspection and testing

Integrating Blockchain in Safety-Critical Systems: An Application to the Nuclear Industry

“…As described in the introduction, SG tube inspections are important stages of the life cycle of the facilities. Hardware technology is well established as described in [2] and [3] but, as explained above, blockchain can be applied to simplify and improve the inspection process by assuring the inspection confidence and reducing the time needed to carry it out.…”

“…There are two types of inspections, the so-called Pre-Service Inspections (PSIs) and the periodical inspections that are generally performed during fuel recharge (also called In-Service Inspection or ISI). Although the scope of an inspection includes all the areas of a nuclear power plant (reactor vessels, pipes and turbines), this paper concerns automated eddy current inspections of steam generators and heat exchanger tubes [2] [3].…”

The Study of Multiaxial Loading and Damage to the Structure and Materials in the PWR Steam Generator of Nuclear Reactor

“…Meanwhile, other issues associated with steam generators in NPPs encompass tube denting, thinning, corrosion, fluid-induced vibrations, cracking, and bending deformation in U-shaped tubes or support plates, tube leaks, and fractures. One of these significant accident risks may stem from operational transients and rare events involving degraded steam generator tubes, potentially leading to core meltdown scenarios [5].…”

Chemical Cleaning of Magnetite Deposits on the Flow Mini-Channels of a Printed Circuit Heat Exchanger in an EDTA-Based Solution

“…To address this, the integrity of the SG tubing has been inspected using eddy current testing (ECT) probes. The thickness of the deposits and clogging of the tube support plate have also been estimated using ECT signals [25][26][27]. In conventional SGs, deposits are removed by mechanical and chemical cleaning processes.…”