Turbine steam path maintenance and repair

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Bibliographic Details
Main Author Sanders, William P.
Format eBook
LanguageEnglish
Published Tulsa, Okla. : PennWell, c2001-c2004.
Subjects
Steam-turbines > Maintenance and repair.
Steam-turbines > Design and construction.
elektronické knihy
electronic books
Online AccessFull text
ISBN9780878147878
9780878147885
9781593700096
Physical Description1 online zdroj.

Cover

Table of Contents:
  • 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.

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