... sea-state for various stages of operation and methodology for real-time vessel motion monitoring for decision-making offshore. operation marine operation equation acceptance criteria resonance installation operation dnvgl-rp-n103 offshore technology conference crane phc simulation size...

... to eliminate slickline intervention and minimize associated risks and operation time. This tubing hanger valve is a bi-directional well barrier element qualified according to API 6A: Specification for Wellhead and Tree Equipment, and some of the acceptance criteria in API Spec. 19V: Subsurface Completion...

...) inspection accuracy has been discussed. Potential impact to welding acceptance criteria, associated inspection challenges, and risks to overall project schedule has been discussed. Gaps to DNV-RP-F108 have also been identified and potential solutions recommended. This paper provides a holistic view based...

..., an ECA was performed to establish allowable pipeline longitudinal stresses as input to pipeline design for optimization of lateral buckling mitigation measures. This assessment was iterative to define a compromise between the welding acceptance criteria, the material capacity (fracture toughness in sour...

... decks. The tool makes use of global ultimate strength analyses results which considers the acceptance criteria for each operating region in Malaysian Waters. The limits of these criteria are used to create contour boundaries, which depending on Centre of Gravity (CoG) shifts due to topsides loading...

... to meet and even exceed the minimum requirement of the joint integrity during the full life cycle of the pipeline loading from installation until operation. As a result, the joint acceptance criteria envelope can be designed as acceptance criteria for regulatory purposes and for offshore application...

... study. The objective of the ECA is to provide defect/ crack acceptance criteria based on methodology specified by BS7910. During ECA, the respective weld sample was analyzed against pipeline operating parameters coupled with fatigue stress mainly contributed by pressure variations. Crack growth...

... hydrotested and commissioned prior to gas in. No anomalies were observed. The use of AUT and ECA has proven to be cost effective and enhance pipeline integrity in comparison to the conventional RT and workmanship criteria. criteria eca downtime weld integrity acceptance criteria defect weldment...

... Abstract Modern subsea pipelines are now routinely exposed to high strains. When above yield they receive appropriate attention since Engineering Critical Assessment (ECA) derived flaw acceptance criteria would normally be considered mandatory. For stress based designs, (applied axial strain up...

.... The issues with regards to acceptance criteria will be elaborated and methods in performing the assessment activities are addressed in stepwise manner. The paper will also highlight several issues inherited in the adopted processes and provide some new developments in addressing the constraint faced...

... of 0.5 to 1.5% total strain. Engineering critical assessment (ECA) performed according to DNV OS-F101 appendix A is used to derive the weld flaw acceptance criteria for inspection of girth welds by automatic ultrasonic testing (AUT). There are several challenges associated with HP/HT CRA pipeline...