Investigation on Effects of Mooring Line Fractures and Connector Failures for A Hybrid Modular Floating Structure System

The present work reports a Hybrid Modular Floating Structure(HMFS)system with typical malfunction conditions.The effects of both fractured mooring lines and failed connectors on main hydrodynamic responses(mooring line tensions,module motions,connector loads and wave power production)of the HMFS system under typical sea con-ditions are comparatively investigated.The results indicate that the mooring tension distribution,certain module motions(surge,sway and yaw)and connector loads(Mz)are significantly influenced by mooring line fractures.The adjacent mooring line of the fractured line on the upstream side suffers the largest tension among the remaining mooring lines,and the case with two fractured mooring lines in the same group on the upstream side is the most dangerous among all cases of two-line failures in view of mooring line tensions,module motions and connector loads.There-fore,one emergency strategy with appropriate relaxation of a proper mooring line has been proposed and proved effective to reduce the risk of more progressive mooring line fractures.In addition,connector failures substantially affect certain module motions(heave and pitch),certain connector loads(Fz and My)and wave power production.The present work can be helpful and instructive for studies on malfunction conditions of modular floating structure(MFS)systems.

The micro-meso-macro architecture of a proposed collaborative emergent strategy for the hydrogen market

In 2018,an intergovernmental climate-change panel concluded that,to maintain a global temperature increases of<1.5℃,net-zero greenhouse-gas emissions would be required by 2050.Since then,>110 countries have pledged net-zero carbon ambitions by 2050 and hydrogen has been identified at national levels as key to achieving this.Governments have pledged>US$70 billion to further advance hydrogen infrastructure and technology,with an additional investigation on>200 proposed hydrogen-based projects expecting completion before 2030,totalling a value of US$300 billion.Reaching these aggressive targets will require a disciplined cohesion of collaborative strategies to develop an integrated macro infrastructure system.This article discusses the current infancy of the hydrogen market,introduces and defines a new‘collaborative emergent strategy’based on the emergent strategy concept by Mintzberg and Waters,and links its developmental viability through a staged micro-meso-macro architecture.Successful strategic business case studies and current market opportunities across multiple industries are reviewed as they all vie for a strategic early market position.