The redefining possibilities of hydrogenerator mechanical design safety factors

The purpose of this study is to analyze the possibility of redefining the mechanical safety factor in the design of hydrogenerators with the ultimate aim of reducing the generator price, leaving the same safety of the structure. As a starting point for these analyses, the American standards for pressure equipment, which have recently changed in this way, are taken for the consideration. It can be concluded that there is certainly the possibility for a change of safety factors, since currently used safety factors still have the values defined before 50 or more years, although the mechanical methods of calculation have been significantly changed and improved during this period. Operational experiences from the work of a number of hydrogenerators also confirm our starting point.

Authors:

Zdravko Ivancic
NUMIKON L.T.D.

Veljko Filipan
Faculty of Chemical Engineering and Technology

Luka Alfier
NUMIKON L.T.D.

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