ABC Advisory on cold expansion technology/Консультации по технологии холодного расширения

Издание на английском языке
Cyclic loading from ocean waves can cause fatigue damage and cracks in marine and offshore structures. If these cracks are left to propagate they can compromise the structural integrity and safety of the vessel/asset. To protect the vessel/asset and preserve life and the environment, class societies typically require owners to permanently repair cracks located at critical areas of structures. For cracks located at non-critical areas, when constraints such as hot work restrictions make permanent repairs impractical during normal operations, temporary repairs may be considered on a case-by-case basis.

Table of contents
Section 1 - Introduction
1.1 Objective
1.2 Scope and Limitations of Using Cold Expansion (CX) Technology
1.3 Abbreviations
1.4 Terminology
Section 2 - Repair cracks on marine and offshore structures
2.1 Traditional Repair Options for Addressing Cracks
2.2 What is a Crack Arrest Hole?
Section 3 - Cold expansion technology
3.1 What is Cold Expansion Technology?
3.2 Installation of Cold Expansion Technology
Section 4 - Feasibility study - lessons learned
Section 5 - Approval of cold expansion technology
5.1 Conditions for Using Cold Expansion Technology
5.2 Process of Cold Expansion Technology
5.3 Repair Lifetime Category and Qualification
5.3.1 Applications for Each Repair Lifetime Category
5.4 Type Approval
5.4.1 Production Design Assessment (PDA)
5.4.2 Manufacturing Assessment (MA)
5.5 Maintenance Procedure
5.6 Engineering Analysis
5.7 Inspection and Monitoring
Section 6 - References
Appendix A - Feasibility study of cold expansion technology
A.1 Field Test - Case Study of a Container Carrier in Operation
A.1.1 Preliminary Information
A.1.2 Engineering Critical Assessment (ECA)
A.1.3 Acoustic Emission Testing (AET) for Monitoring
A.1.4 Effect of Cold Expanded Crack Arrest Hole on Field Test
A.2 Laboratory Fatigue Test
A.2.1 Specimens
A.2.2 Laboratory Fatigue Test
A.2.3 Effect of Cold Expansion Technology