API 17 – Subsea Boosting Discussion Recommended Practice for Integrity Management, Qualification Requirements, and Referenced Standards • Purpose of discussion: 1. 2. • Seek common ground and new insight into issues related to recommended practices for qualification and integrity of subsea boosting equipment 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? Item Area 1 Scope Comments Does scope need to be more limited or should it be exapnded beyond these items? - Pumps - Motors - Instrumentation and Controls - Barrier fluid systems - Pump mounted electrical equipment (penetrators) 2 Design Requirements Should 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? 2.1 2.2 Pump Assembly Pump Casings Invoke API 610? What design codes should be used. Applying ASME VIII D2 leads to more conservative designs than well control equipment (i.e. 2/3 Sy versus ~0.55 Sy @ 250F) 2.3 2.4 2.5 2.6 Motor Casings Pump mechanical seals Barrier Fluid Systems Pump rotors / rotodynamics See comment for item 2.2. Invoke API 682? Invoke API 682? Design and analyse per API 610. Monitor vibration during FAT per API 670? 2.7 2.8 Pump Motors Piping Invoke API 546 or API 547? Should motor types be discussed? Apply 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 2.9 Flanges / Connections Where practical use API flanges. Where not design and qualify OEM connection in accordance with API 17D 2.10 Fasteners In accordance with API 17D? 3 3.1 3.2 Pump System Design Pressure Barrier / Isolation Philosophy Attendant Equipment (i.e. connectors, valves, frames etc.) 4 Pump Mounted Controls 4.1 Over pressure protection 5 Standard configuration schematics showing instrumentation locations and minimum isolation philosophy? Per Api 17D? SIL Level. Redundancy limits and over pressure protection requirements? Material and Welding Requirements 5.1 Pressure containing bodies Forging, 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? 5.2 Pressure containing welds ASME IX per API 6A / 17D? 5.3 Overlay welds ASME IX per API 6A / 17D? 5.4 NDE Per ASTM E94, ASTM A709, ASME V in accordance with API 6A/17D or others? 5.5 Non metallic materials i.e. special requirements for ceramics, non elastomerics etc. 6 Testing 6.1 Pressure testing Per 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) 6.2 Pump testing Per API 610 and API 670? 6.3 Motor testing Per API 546 7 Technnology Maturity Assess per API 17N? 8 Qualification 8.1 Seals API 6A / 17D Appendix F PR-2 8.2 OEM Connections API 6A / 17D Appendix F PR-2 8.3 Mechanical Seals API 682? 8.4 Motor components API 546? 8.5 Penetrators for Pump / Motor Per manufacturers written specifcation or variant of Statoil specification? 8.6 Barrier Fluid components Per manufacturers written specifcation?