First of all, in the nuclear power industry, but also in other industries, the direction of valve diagnostics is developing. The lion's share of all valves is occupied by valves with an electric drive and, depending on the type of power unit, their number can vary from 3000-4000 to almost 6000 units per power unit. Although not all fittings directly affect safety or power output, failure of just one mechanism is enough for fatal consequences, which, given the enormous laboriousness of repairing fittings located in an unsecured section, translates the diagnostics of valves from the category of "pampering" into a fairly serious science.

For another real example, I propose to consider vibration diagnostics of fan bearings. Let's disassemble the bearings and make sure that inspection is a key step in determining the root cause of the failure.

Equipment repair is a must. A diagnostic specialist has to assess the technical condition of the equipment, and, accordingly, the quality of the repair. But it so happened that I expect the withdrawal of the unit from repair at my enterprise with some shudder.

Every day we are used to facing the same problems on the pumps. Sometimes one glance at the vibration spectrum is enough to identify the problem and issue recommendations for its elimination. But sometimes the diagnostician is given the opportunity to work hard. In this article, we will consider a practical case of vibration diagnostics of vertical pumps, conduct a whole study and identify an incomprehensible spectral component.

Bending of the pump shaft is rare. It can be determined by means of vibration diagnostics, and in some cases by simple inspection. In this article, we will consider a practical case of detecting this defect visually.

It's time to announce the release of the first version of the multiplane balancing calculation program. I bring to your attention a small overview of the program.

Recently we had a joyful event - our instrument park (QUARTZ, TOPAZ, AGAT-M) was replenished with the long-awaited Leonova Diamond from SPM Instrument. The instrument, coupled with the Condmaster Ruby software, enables complete analysis of time signals. A bearing defect on one of the pumps was not long in coming, and there was a reason to work with time signals.

My colleagues and I decided to conduct an experiment and determine the effect of imbalance on power consumption. A double-sided intake fan with a belt drive with vibration dampers was chosen as a test subject.

It happens that we encounter inexplicable problems that we cannot interpret using conventional means and methods of vibration diagnostics. And it does not occur to all of us that increased vibration and equipment failures can be associated with torsional vibrations. What are they, what are dangerous and how are they detected, read in this article.

Vibration diagnostics can not always accurately indicate the root cause of the poor technical condition of the equipment. There are various defects that can occur at the same frequencies. Therefore, before doing a more in-depth analysis, Victor Wowk, based on his experience, suggests using simple tools and methods to check the five conditions that will help identify the most common equipment problems. It is recommended that you keep this knowledge in your arsenal and apply it to novice mechanical engineers.