Turbine steam path [electronic resource] : maintenance and repair. Volume 1 / William P. Sanders.

Format:

Book

Author/Creator:

Sanders, William P.

Language:

English

Subjects (All):

Steam-turbines--Maintenance and repair.

Steam-turbines.

Turbines.

Physical Description:

1 online resource (782 p.)

Place of Publication:

Tulsa, OK : PennWell, c2001.

Language Note:

English

Summary:

William P. Sanders, prominent expert in the field of steam turbines, brings the information and expertise of his seminars to this long-awaited practical approach to steam turbine maintenance and repair. This authoritative guide affords anyone seeking information on turbine steam path maintenance and repair a complete and focused working knowledge of the subject--from the experienced engineer to industry lay person. The reader of this book will be able to: - Identify the type and severity of any damage - Suggest possible cause of damage - Indicate the most appropriate corrective actions available With thought-provoking examples, numerous photographs and figures, and an excellent simplification of a complicated topic, Turbine Steam Path Maintenance & Repair, Volume 1 is sure to be an invaluable resource readers turn to many times during their careers

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

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

Chapter 3-Steam Path Damage

Induced by Water

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

Chapter 4-Operational Events

Giving Rise to Steam Path Damage

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

Chapter 5-Steam Path Damage

and Deterioration from Material

Property Degradation

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

Chapter 6

Steam Path Damage and Deterioration from

the Deposition of Contaminants

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.

Notes:

Bibliographic Level Mode of Issuance: Monograph

Includes bibliographical references and indexes.

ISBN:

1-62870-290-7

OCLC:

646849323