Page 145 - Pipelines and Risers
P. 145

118                                                               Chapter 9


                                               3D Static In-Place










                                  Extract Mode Data
                                  (Freq, stress, gap)



                                                   Spans



















                           Perform In-Line     Perform Dynamic       Perform X-Flow
                          Fatigue Assessment     Stress Check       Fatigue Assessment







                                            f Identify Spans  \
                                             Requiring Intervention




           Figure 9.1 Flow chart describing the free span assessment procedure.
           Design criteria applicable to different environmental conditions have been defined as follow:


           a)  Peak stresses or moment under extreme condition will satisfy the dynamic strength criteria
              given in Chapter 4.8.
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