Stress-Corrosion Cracking Course Syllabus
DAY 1
7.30 Coffee, registration
8am-4.30pm
Description of SCC
- Definition
- Causes
- Appearance
- Other forms of environmental-assisted cracking
History of SCC in pipelines
- High-pH SCC
- Near-neutral-pH SCC
- Internal SCC
Stages of SCC
- Pre-initiation
- Initiation
- Growth models
- Early growth
- Dormancy and re-initiation
- Late growth
- Final fracture
Test techniques to study SCC
- Accelerated testing
- Electrochemical tests
- Cracking tests
- Measuring crack growth
Environmental factors
- Field observations
- Liquid composition and concentration
- Electrochemical potential
- Temperature
Stress factors
- Field observations
- Importance of strain rate
- Cyclic loading
- Sources of stress
DAY 2 • 8AM-4.30PM
Metallurgical factors
- Pipe grade
- Steel composition
- Mechanical properties
- Microstructure
- Manufacturer
Mechanisms of SCC
- High-pH SCC
- Near-neutral-pH SCC
Likely locations for SCC
- Geographical
- Proximity to compressor or pump stations
- Proximity to other SCC
- Soil, terrain, moisture level
- Gas versus liquid pipelines
- Coating types and conditions
- Pressure history
- Corrosion history
- Pipe manufacturer
SCC detection and integrity assurance
- B31.8S
- Hydrostatic testing
- In-line inspection
- Direct assessment
DAY 3 • 8AM-4.00PM
Mitigating SCC
- Operating existing pipelines
- Designing new pipelines
- Repair methods
Integrity management plans
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