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Loading conditions of a riser

Owing to the nature of a riser being submerged in deep water in an approximately vertical position, its loading conditions are more complicated than onshore pipehnes. In the design of a riser, the different loads can be categori2ed into functional loads, environmental loads, installation loads and accidental loads. [Pg.181]

Functional loads are the loads that the riser has to sustain during its operation. One of the major functional loads of a riser is internal pressure, which arises from the fluid content being transported by the riser itself. Two internal pressure conditions must [Pg.181]

Rehabilitation of KpeUnes Using Fiber-reinforced Polymer (FRP) Composites [Pg.182]

Environmental loads are caused by wind, waves and current forces, and VIVs (Stanton, 2006). These forces can induce platform motions which displace the risers relative to where they are connected to the platform, causing excessive bending stresses. The majority of these loads are naturally occurring and hence, are time dependent. Loads such as wave and current forces are cyclic in nature and thus can cause fatigue to the risers. [Pg.182]

Installation loads are those imposed on the riser during deployment. Such loads are dependent on the installation procedures and the method in which the riser is tied in to the main production unit on the platform. Nevertheless, installation loads are not of major concern in the study of riser repair systems as they occur prior to any defects sustained by the riser. [Pg.182]


See other pages where Loading conditions of a riser is mentioned: [Pg.181]    [Pg.192]   


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