TÜV Rheinland: Research on Remaining Lifetime Assessment of Power Plant Components
Development of a new testing technology / Creep fatigue behavior in conventional power plants / Long-term material testing
High Material Loads
To ensure constant network stability, conventional power plants must react more flexibly to offset irregularities from the growing supply of electrical power from renewable power sources. As a result, gas and coal-fired power stations are no longer continuously operating in basic mode, but rather go through the process of start-up and shutdown more frequently. Consequently, the number and extent of load changes increase and components are exposed to extreme temperature fluctuations more often, especially in the water-steam cycle. Therefore, this is where the creep-fatigue-mechanism should be explored. For this purpose, a cost-effective testing technology is in development to measure the long-term impact of this mechanism on materials.
“Such a precise assessment of the expected lifetime of critical components is urgently needed for safety reasons and to determine the economic viability of a plant,” says Dr. Ansgar Kranz, who is working with partners RWE Generation SE and StandZeit GmbH to carry out the project on behalf of the NRW Ministry for Innovation, Science and Research (MWIF). As cooperation partners, RWE has provided power plant data, while StandZeit has lent its support in the manufacture and integration of measuring and control technology. Additionally, the State of NRW has provided a budget of € 780,000 for a period lasting up to 2019.
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