Enhanced girth welding procedure qualifications to produce strain-resistant girth welds
Guidance document for the proper use of API Standard 1104
Provide background and rationale for various clauses in API 1104
Provide example problems
Guidance document for the proper use of API Standard 1104
Provide background and rationale for various clauses in API 1104
Provide example problems
Supplemental requirements for welding procedure qualifications and field practice to produce strain-resistant girth welds
Selection of welding procedures, consumables, and welding parameters
Additional procedure qualification tests and requirements
Repair procedures and limits
Inspection procedures and flaw acceptance criteria
Achievable strain tolerance level
Welding procedures to improve the strain capacity of girth welds
Design and implementation of special welding procedures to compensate for the detrimental effects of weld strength undermatching, high-low misalignment, and weld flaws
Proper treatment of low fracture toughness
Understanding the significance of low toughness related to pop-in
Provide recommended procedures to deal with low toughness
Construction quality management for welds with high-low misalignment
Guidelines and limits on high-low misalignment under different conditions
Interaction of high-low misalignment with other features, such as welds with undermatching strength
Welding and integrity assessment of high-strength pipelines (≥X70)
Essential variables for welding high strength pipelines
Test protocols to obtain accurate mechanical properties
Assessment methodology for traditional and advanced designs
Welding procedure design and weld property prediction of X80 and lower grades
Optimization of welding procedures through the prediction of weld and HAZ properties
ECA and flaw acceptance criteria for the construction of large-diameter pipelines
Flaw acceptance criteria per API 1104, CSA Z662, or other equivalent codes
ECA and flaw acceptance criteria for low temperature construction
Flaw acceptance criteria using advanced analysis, i.e., crack-driving force vs. low-constraint toughness
ECA to account for high-low misalignment
Flaw acceptance criteria explicitly accounting for the high degree of misalignment
ECA of offshore risers and flowlines
Flaw acceptance criteria that explicitly account for fatigue and/or harsh environment
ECA of liquid lines with fatigue concerns
Review the application of API 1104 Appendix A Level 3 procedure
Make recommendation on implementation
Development and standardization of state-of-art fitness-for-service assessment procedures
Support standard revisions in test protocols and assessment procedures
Case Study – Essential Welding Variable Method (EWVM)