Presentation on theme: "API 17 – Subsea Boosting Discussion Recommended Practice for Integrity Management, Qualification Requirements, and Referenced Standards Purpose of discussion:"— Presentation transcript:
API 17 – Subsea Boosting Discussion Recommended Practice for Integrity Management, Qualification Requirements, and Referenced Standards Purpose of discussion: 1.Seek common ground and new insight into issues related to recommended practices for qualification and integrity of subsea boosting equipment 2.Gauge interest in establishing a focused industry group in API committee 17 to address this topic Talking Points: – An industry standard RP on subsea boosting should help gain project approvals from regulatory agencies – Need standard approach to defining risk and required risk mitigation – Hopefully avoid potential barriers to SS boosting project approvals – Can we continue to rely on “due diligence”, or should we have an agreed recommended practice? – What does “qualified” mean for SS Processing? Requirements to gain regulatory agency approval? To ensure safety and integrity? Where/how to qualify? – Should qualification philosophy be “Test to Success” or “Test to Failure”? Standard guidelines for qualification testing? – Qualification: should there be STD simulated fluids, viscosity, temp, gvf and STD output format – Could we use existing SS standards (API 17N,P,O,Q,D, ISO 13628)? – or is a new one needed to clarify? – Could other industry standards be utilized? DNV RP A203? Or ?? – Do (or should?) standards define a “qualified “ system or just a systematic framework for doing things? – How have Operators adapted qualification processes to project requirements and timelines?
ItemAreaComments 1Scope - Pumps - Motors - Instrumentation and Controls - Barrier fluid systems - Pump mounted electrical equipment (penetrators) Does scope need to be more limited or should it be exapnded beyond these items? 2Design RequirementsShould standard design ratings be adopted in a similar manner to other API equipment areas. i.e. 5,000 psi, 10,000 psi…… 0 to 250 F etc or should there be freedom to provide intermediate application specific ratings? Should there be standard ratings for motors? Is this practical? 2.1Pump AssemblyInvoke API 610? 2.2Pump CasingsWhat design codes should be used. Applying ASME VIII D2 leads to more conservative designs than well control equipment (i.e. 2/3 Sy versus ~ F) 2.3Motor CasingsSee comment for item Pump mechanical sealsInvoke API 682? 2.5Barrier Fluid SystemsInvoke API 682? 2.6Pump rotors / rotodynamicsDesign and analyse per API 610. Monitor vibration during FAT per API 670? 2.7Pump MotorsInvoke API 546 or API 547? Should motor types be discussed? 2.8PipingApply ASME B31.8 like other subsea packages or is another code more applicable? ASME B31.8 will yield less conservative designs than ASME VIII D2 2.9Flanges / ConnectionsWhere practical use API flanges. Where not design and qualify OEM connection in accordance with API 17D 2.10 FastenersIn accordance with API 17D?
3 Pump System Design 3.1Pressure Barrier / Isolation PhilosophyStandard configuration schematics showing instrumentation locations and minimum isolation philosophy? 3.2Attendant Equipment (i.e. connectors, valves, frames etc.) Per Api 17D? 4Pump Mounted Controls 4.1Over pressure protectionSIL Level. Redundancy limits and over pressure protection requirements? 5Material and Welding Requirements 5.1Pressure containing bodiesForging, heat treating and quality requirements per ASME VIII D2 or per API 17D / 6A?. Quality / inspection levels per API 17D / 6A or ASME VIII D2. What code should be invoked for material test requirements or vendor qualification requirements? Are there other applicable standards? 5.2Pressure containing weldsASME IX per API 6A / 17D? 5.3Overlay weldsASME IX per API 6A / 17D? 5.4NDEPer ASTM E94, ASTM A709, ASME V in accordance with API 6A/17D or others? 5.5Non metallic materialsi.e. special requirements for ceramics, non elastomerics etc.
6Testing 6.1Pressure testingPer ASME VIII D2 (i.e. pressure to 90% Sy) or API 17D/6A (i.e. 1.5 x WP with a limit of 0.83 Sy) 6.2Pump testingPer API 610 and API 670? 6.3Motor testingPer API 546 7Technnology MaturityAssess per API 17N? 8Qualification 8.1SealsAPI 6A / 17D Appendix F PR-2 8.2OEM ConnectionsAPI 6A / 17D Appendix F PR-2 8.3Mechanical SealsAPI 682? 8.4Motor componentsAPI 546? 8.5Penetrators for Pump / MotorPer manufacturers written specifcation or variant of Statoil specification? 8.6Barrier Fluid componentsPer manufacturers written specifcation?