Abstract

The piping designers always want higher allowable machinery nozzle loads to simplify piping designs, while the rotating machine manufacturers want smaller allowable nozzle loads to assure good alignment, higher reliability and fewer operation complaints. From the power plant operator's point of view, where long-term reliability is a very important factor, the vote should go to the manufacturer. Optimum power piping design, support arrangement and layout configuration for rotating machines of a power plant (turbines, pumps, others) are addressed. Modern practical notes, new guidelines, recent lessons learned and latest achievements on power piping, power machinery nozzle load optimization, stress analysis and piping flexibility review are discussed.

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