Investigation of Corrosion Fatigue Phenomena in Transient Zone of Mechanical Drive Steam Turbines and its Preventive Measures
Abstract
For mechanical drive steam turbines, the investigation
results of corrosion fatigue phenomena in the transient zone
are introduced, including basic phenomena on expansion
line and actual design and damage experience. These results
were analyzed from the standpoint of stress intensity during
the start of cracking. In order to resolve such problems,
preventive coating and blade design methods against fouling
and corrosive environments are developed. Detailed
evaluation test results are given for coating performance
using a unique test procedure simulating fouling phenomena
and washing conditions. Finally, the results of the
successful modification of internals and on-line washing
results on site are introduced.
Description
LectureSubject
TurbomachinesCollections
Citation
Hata, Satoshi; Nagai, Naoyuki; Fujimura, Norihito (2013). Investigation of Corrosion Fatigue Phenomena in Transient Zone of Mechanical
Drive Steam Turbines and its Preventive Measures. Turbomachinery Laboratory, Texas A&M Engineering Experiment Station. Available electronically from https : / /hdl .handle .net /1969 .1 /172620.