عنوان

Turbine steam path: maintenance and repair

Turbine steam path: maintenance and repair

Tulsa, OK

PennWell

c2001-c2004

3 v. in 4 : ill

3a

3b

Vol. 3 has other title information: mechanical design and manufacture

Includes bibliographical references and indexes

William P. Sanders

Machine generated contents note: List of Acronyms -- Foreword -- Preface -- Acknowledgements -- Chapter 1-Considerations of a Turbine Steam -- Path Maintenance Strategy -- Introduction -- Considerations Relating to a Maintenance Strategy -- The Turbine Outage -- Establishing the Need for Unit Shutdown -- Outage Scheduling -- Interval Between Maintenance Outages -- The Inspection/Maintenance Outage -- The Available Corrective Options -- Distinction Between Causes and Mechanisms of Failure -- Component Susceptibility for Deterioration -- Instantaneous Damage or Failure -- Factors Contributing to Gradual Deterioration -- Monitoring Damage and Deterioration -- Replacement Parts Strategy and Supply -- References -- Chapter 2-Steam Path Component Alignment -- and Stage Spatial Requirements -- Introduction -- Predictable Factors Affecting Design Clearance -- Rotor Vertical Deflection -- Differential Expansion -- Radial Expansion of the Steam Path Parts -- Diaphragm Deflection at Pressure and Temperature -- Unit "End-to-End" Lateral Alignment -- Methods of Field Alignment -- Unpredictable Factors Affecting Design Clearance -- Steam Path Area Requirements -- The Stage Operating Definition -- Steam Path Component Arrangement )Axial/Radial Direction( -- Blade Vane and Cascade Geometry -- The Effect of Vane Placement Errors -- References -- Chapter 3-Steam Path Damage -- Induced by Water -- Introduction -- Water Condensation in Expanding Steam -- Radial Distribution of Moisture -- Moisture Deposition -- Measuring Moisture Distribution and Content -- Water Removal from the Steam Path -- Moisture-induced Damage -- Moisture-impact Erosion -- Blade-trailing Edge Erosion -- Wire-drawing Erosion -- Water-washing Erosion -- Water Ingestion into the Steam Path -- References -- Chapter 4-Operational Events -- Giving Rise to Steam Path Damage -- Introduction -- Foreign Object Impact Damage -- Sources of the Impacting Objects -- Impact Damage Classification -- Solid-particle Erosion )Abrasion( -- Scale Formation -- The Erosion Mechanisms -- Material Loss Patterns Due to SPE -- Protective Measures Against Erosion -- SPE Influence on Stage Performance -- Steam Path Component Rubbing -- Fretting Corrosion -- References -- Chapter 5-Steam Path Damage -- and Deterioration from Material -- Property Degradation -- Introduction -- Considerations of Material Structure -- High-temperature Creep -- Creep Deformation -- The Creep Mechanism -- Creep Rate -- Creep in Steam Path Components -- High-cycle Fatigue -- Tlhe High-cycle Phenomena -- Rotating Blade Vibratory Stresses -- Material Properties -- Fatigue Stresses and their Representation -- Crack Growth -- HCF Failure Surface Appearance -- Creep Fatigue -- Temper Embrittlement -- Low-cycle Thermal Fatigue -- Thermal Transients -- Determination of Thermal Stresses -- Components Operating at High Temperature -- References -- Chapter 6 -- Steam Path Damage and Deterioration from -- the Deposition of Contaminants -- Introduction -- Source of Steam Path Impurities -- The Composition of Deposits -- The Removal of Chemical Deposits from the Steam Path -- Steam Path Cleaning Methods -- Deposition Patterns -- Steam Path Efficiency Deterioration -- Steam Path Corrosion -- Forms of the Corrosion Process -- References

Maintenance and repair ، Steam-turbines

Sanders, William P.

AU

TI