Interacting Defect Minimum Overlap Length 2. Calculate pipeline defect interaction length and interaction angle, and projection line minimum length, minimum overlap and projection line angular spacing DNVGL-RP-F section 3. Rock Mechanics Symposium and 5th U. In this paper the development of the RP is outlined, the determination of the safety factors are explained and the sensitivity of the safety level to the various parameters is demonstrated. Proceedings of an International Conference Submersible Technology: Diameter Over Wall Thickness Ratio tf: The second approach is based on the allowable stress design format, where the allowable operating pressure is determined from the capacity and multiplied with a single usage factor based on the original design factor. Uncertainties associated with the sizing of the defect and the specification of the material properties are specifically considered in determination of the allowable operating pressure.
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DNV GL does not accept any liability or responsibility for loss or damages resulting from any use of this document. Changes in this document are highlighted in red colour. However, if the changes involve a whole chapter, section or sub-section, normally only the title will be in red colour. This affects several places. More guidance is given in general see also Table and [8.
Some specific requirements for replacing the system pressure test old table has been removed. Appendix A is removed. From installation JIP. Added clarifications and more requirements to coiled line pipe — [7. Further, a minimum diameter of 60 mm has been specified. Dimensional requirements to smaller pipes have been modified and harmonized with common coil tubing pipes — [7.
P; Has been modified. U; Modified to include both approaches to achieve Suffix U; retrospective documentation and as part of production testing. Restructuring of content to better clarify requirements. B Mechanical testing and corrosion testing Minor changes and modifications, e.
C Welding In general only minor updates on reference standards and some changes to clarify paragraphs. D Non-destructive testing — [D.
SUBMARINE PIPELINE SYSTEMS