Guidelines for technical regulations and standardization of turbine and hydromechanical equipment during production and exploitation

Abstract

Turbine and hydromechanical equipment at hydro power plant 'Đerdap 1' is subjected to service conditions which lead to degradation of materials and structures. Taking into account the frequency of failure occurrence and experience accumulated through long term testing and determination of state, it can be concluded that basic causes of equipment degradation are: oscillations, fatigue, corrosion, erosion and cavitation. It is the responsibility of manufacturers of turbine and hydromechanical equipment to make sure that all vital parts and supporting structures are made in compliance with technical requirements, suitable standards and european directives that refer to structural integrity. Applicability of Pressure Equipment Directive 97/23/EC and Machinery Directive 98/37/EEC is especially relevant, due to the fact that certain parts and structures of turbine regulation system, lubrication system, turbine runner and measurement system are subject to one of the above mentioned directives. This paper contains the overview and basic parameters of new and general approach to standardization and technical harmonization of hydro power plant equipment that refers to structural integrity.