Advances in Subsea Pipeline Engineering and Technology: Papers presented at Aspect 90, a conference

I - Pipeline / Seabed Interaction.- Upheaval Buckling Mitigation by Hot Water Flushing.- Pipeline Deburial.- The Effect of Imperfection Shape on Upheaval Buckling Behaviour.- Behaviour of Anchor Reinforcement in Offshore Pipelines.- II - Flexible Pipelines.- Increased Reliability Through a Unified Analysis Tool for Bonded and Non-Bonded Pipes.- Advances in Flexible Pipe Design and Construction.- Design and Materials Considerations for High Pressure Flexible Flowlines.- The Problems Associated with NDT of High Pressure Flexible Pipes.- III - Pipeline Design, Fabrication and Installation.- Piggable Pipeline WYE Connection - Development and Design.- Mechanical Testing of Flash Butt Welded 36" OD API - X65 Grade Pipes.- The Central Brae Project Retrofit Riser Installation.- Hazard Assessment and Pipeline Design.- IV - Deepwater Applications.- Developments in Hyperbaric Welding Technology for Pipeline Repairs Beyond 600 msw.- Laying Deepwater Pipelines in Internal Waters (Lake of Como) - Technology, Techniques and Environmental Factors.- Hazard and Protection Concepts for Deepwater Pipelines - The Environmental Factors.- Deepwater Tie-in.