The common GE® D11 steam turbine, a single-casing HP/IP design used extensively in combined cycle applications, is demanding increased focus during normal outages, and ongoing attention for reliability, efficiency, and plant safety. Fundamental reasons are intensified by market-driven calls for continued cycling and low-load operation. Units modified for higher efficiencies and compatibility with 7FA Gas […]
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Relative to historical industry experiences, D11 steam turbines have come of age at an early stage in their lifecycle and are strong candidates for retrofit solutions. The most common reasons reported to MD&A for prompting retrofit consideration include (1) reliability issues, (2) technology obsolescence, and (3) changes within plant operating missions and steam cycles (e.g. […]
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Mechanical Dynamics & Analysis (MD&A) upgraded a customer’s hydrogen seals for a 7FH2 generator located in Colombia. Many units in the combined cycle setup, which can be comprised of two MS7001FA gas turbines and a D11 steam turbine, are also equipped with 7FH2 generators. Many of these machines have unbolted babbitted hydrogen seals. If there’s […]
Read More Read our D11 Retrofit advertorial inside Power Engineering Magazine’s February issue.
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