ISO 19283:2020 pdf free

ISO 19283:2020 pdf free.Condition monitoring and diagnostics of machines – Hydroelectric generating units
This document is machine-specific and is focused on the generator, shaft/bearing assembly, runner (and impeller for pumped storage applications), penstock (including the main inlet valve), spiral case and the upper draft tube of hydro units. It is primarily intended for medium to large sized hydro units with more than 50 MVA installed capacity, but it is equally valid for smaller units in many cases. It is applicable to various types of turbines such as Francis, Kaplan, Pelton, Bulb and other types. Generic auxiliary systems such as for lubrication and cooling are outside the scope, with the exception of some monitoring techniques that are related to condition monitoring of major systems covered by this document, such as oil analysis. Transmission systems, civil works and the foundation are outside the scope.
This document covers online (permanently installed) and portable instrument condition monitoring and diagnostic techniques for operational hydro units. Offline machine testing, i.e. that which is only done during shutdown, although very important, is not part of the scope of this document. Nor is one-time acceptance and performance testing within the scope. The condition monitoring techniques presented in this document cover a wide range of continuous and interval-based monitoring techniques under generalized conditions for a wide range of applications. Therefore, the actual monitoring approach required for a specific application can be different than that which is recommended in this generalized document.
There exist many potential failure modes for hydro units, some of which can be detected and diagnosed relatively easily, some with more difficulty and some not at all. This document focuses on the potential failure modes listed in A.3, which are generalized for a wide range of applications and machine types,and which can be monitored and diagnosed using the techniques described in Annex C. As the hydrounit design and its operation and maintenance regime can be very different from one application to the next, it is important to highlight that the failure modes described in this document can be different from those of the actual user’s application.ISO 19283 pdf free download.