Derrick design specifications

Standard Derricks 501. Load Capacities 506. Design Loadings 508. Design Specifications 511. Maintenance and Use of Drilling and Well Servicing Structures 515. Derrick Efficiency Factor 521. [Pg.497]

All conditions listed in the section titled Load Capacities, subsection titled Mast and Derricks under Dynamic Conditions," are to be specified by the user. Forces resulting from wind and vessel motion are to be calculated in accordance with the formulas presented in the section titled Design Specifications, paragraphs titled Wind, Dynamic Loading (Induced by Floating Hull Motion). ... [Pg.510]

In addition to withstanding some minimum load or loads (sections titled Load Capacities and Design Specifications ), derricks and masts that satisfy API standards must also satisfy certain requirements regarding materials, allowable stresses, wind, dynamic loading, earthquakes and extremes of temperature. [Pg.511]

Derricks and masts are designed to withstand some minimum loads or set of loads without failure. Each structure shall be designed for the following applicable loading conditions. The structure shall be designed to meet or exceed these conditions in accordance with the applicable specifications set forth herein. [Pg.508]

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