PIPINGFOUNDATION海洋工程管线及附件基础概述.pptx

PIPING FOUNDATION OVERVIEW 2 PIPING FOUNDATION OVERVIEW 1 WHAT MUST BE NOTICED ? 2 3 FITTINGS 4 PIPING 5 适用范围（平台） 1 5 总结与展望 6 WHAT IS THE PIPING ? 3 WHAT IS THE PIPING ? Piping systems are like arteries and veins. They carry the lifeblood of modern civilization. ◆ Transport water from the sources of water supply to the points of distribution； ◆ Carry crude oil from oil wells to tank farms for storage or to refineries for processing； ◆ Convey natural gas from the source and storage tank forms to points of utilization； ◆ Etc. 4 WHAT MUST BE NOTICED ? ※ Piping fundamentals ； ※ Materials ； ※ Generic and specific design considerations ； ※ Fabrication and installation ； ※ Examinations ； ※ Testing ； ※ State and federal regulations ； 5 PIPING (CLASSIFICATION) PN (European system) ：120℃ The reference temperature of two system is different. Class (American system) ：425℃ 6 PIPING (SIZE) Diameter nominal (DN) is also a dimensionless designator of pipe size in the metric unit system, developed by the Internation Standards Organization (ISO). 7 PIPING (SIZE-calculation) We will use differential analysis to determine outside diameter of pipeline, it has two steps. To examine velocity of flow whether corresponds to the standard of GB50030-2007 or not. To examine voltage drop whether corresponds to the standard of GB50030-2007 or not. 8 PIPING (Wall Thickness) Schedule is expressed in numbers (5, 5S, 10, 10S, 20, 20S, 30, 40, 40S, 60, 80, 80S,100, 120, 140, 160). A schedule number indicates the approximate value of the expression. Sch=1000 P/S where P is the service pressure and S is the allowable stress. STD means standard weight; XS means extra strong; XXS means double extra strong; ① The nominal wall thickness of NPS 10 and smaller schedule 40 pipe is same as that of STD.WT.pipe. ② Al