|
Objectives
The course provides the knowledge of risk analysis applied specifically in power industry, starting with advantages and effectiveness of its application. It presents the regulatory basis and requirements, and elaborate commonly used methods through number of examples.
In the end of the course students will be able to
- understand procedure for risk-based inspection and maintenance as defined for European industry by CEN CWA 15740:2008
- present damage mechanisms specific for power industry
- quote inspection techniques as used in power industry and their effectiveness
- understand principles and conditions for life and risk assessment
- understand importance of quality assurance program in mitigation or reduction of risks in power industry
Course Content by Units
Unit 1: Introduction
- Uncertainties and risks in power plant condition assessment
- EU Guide document CEN CWA 15740:2008
- VGB 506 Methods (Uncertainty assessment)
Unit 2: Material behavior and damage mechanisms
- Creep, fatigue, creep – fatigue
- Corrosion
- Failure example and life assessment
Unit 3: Inspection and maintenance
- NDT and monitoring
- Hardness Testing / Replica
- Monitoring of pressure and temperature
- Quality assurance
- Inspection techniques, inspection effectiveness (POD)
- Non destructive testing (NDT) programs and results
Unit 4: On-line monitoring
- Remaining life assessment
- Exhaustion-calculation (TRD code), effect of uncertainties of input data
Unit 5: Remaining Life Assessment (RLM) new power plants
- New steels for plants with steam outlet temperature >600 °C
- Enhanced (RLM) (strains, displacement, forces)
Unit 6: Quality Assurance
- Introduction, problems
- Quality inspection plan
- Risk (new materials, fabrication problem, effects of global sourcing)
Unit 7: Principles of life and risk assessment
- background information: initial and historical data, target setting
- NDT and monitoring of damage mechanisms
- modeling and measuring damage for required inputs
- preliminary analysis, condition review: principles and examples
- principles of risk assessment in power plants (ref. CWA 15740)
- discussion on example cases with short review of the lesson
Unit 8: Condition and life assessment: risk view
- life assessment of hot end components, inspection and maintenance optimization: principles
- application on examples: superheaters, steam piping, turbines (ref. RIMAP Power Workbook)
- views on expected benefits and economical impact
- discussion on applications with a short review of the lesson
Unit 9: Review of the course main issues and preparation for final exam
Unit 10: Final exam
Teaching Methods
The course includes:
- introductory note explaining aim and structure of the course, and used methodology as well
- ex cathedra lecturing illustrated by number of examples
- review of main topics in the end of each lecturing unit
- one case study
- presentation of commonly used software tools and collective exercises
- preparation for final exam by repetition of all course units and main issues
- final exam
Literature
- Textbook:
Risk Analysis in Power Industries, Version 2, February 2009
- Transparencies for each unit:
- Work Shop Agreement CWA 15740
- Damage Mechanisms , high temperature components in power plants
Creep, Fatigue, Creep-fatigue, Corrosion
- Case study: Crack initiation in components
- Inspection
- Case study Risk Based Inspection
- On-Line Monitoring
- Remaining Life Management - New plants
- Quality Assurance
- Principles of life and risk assessment
- Condition and life assessment: Risk view
- Additional material:
Principles of Life and Risk Assessment
RIMAP Application Workbook for Power Plants
|