Integrity Management of Subsea Facilities through the use of Cross Industry Good Practice Guidance
Dr Cameron Stewart, Upstream Technical Manager, The Energy Institute Rob Swindell, Global Director Vibration Engineering, Xodus Group
Date: 21st May 2013 Venue: Holiday Inn, Westhill, Aberdeenshire Host: Subsea Pipelines Integrity Management Conference, Subsea UK Contents & Presentation Structure
Ø Introducing the Energy Institute (EI)
Ø EI Technical Work Programme Ø Technical Committees Ø Good Practice Guidance Development Ø Recently published EI Subsea Guidance
Announcing New Guidance for the Management of Subsea AVIFF
Ø Invite Call to Subsea Industry
Ø Questions and Answers EI Activity
Introducing the Energy Institute The Energy Institute (EI) is the professional body for the energy industry, delivering professionalism and good practice across the depth and breadth of the energy sector.
The EI: •is a learned society •is a not for profit organisation •has charitable status •is a Royal Chartered body EI: Sharing energy knowledge…
Delivering good practice and professionalism
Energy Institute Members & Member Organisations Branches
•The EI has 15 000 individual members •The EI HQ has a main office in from across the energy sector London and a presence also in Aberdeen •The EI has over 300 company members, working in and supporting the •The EI has a network of branches wider energy sector through the UK and also internationally •The EI has a number of key technical partners supporting the EI in the •International branches include- delivery of good practice and Lagos, Dublin, Abu Dhabi, Hong professionalism Kong, Kuala Lumpar, Singapore EI Technical Work Programme
A core pillar of the EI is the development and publication of good practice. This is facilitated through the EI Technical Work Programme, which is supported by the EI’s Technical Partners.
“The EI’s Technical Programme aims to provide industry with cost effective, value adding knowledge on key current and future issues.”
The role of the EI is to act as an honest broker between industry and regulator, supporting and facilitating self-regulation in the energy industry. EI Upstream Activity
Technical Committees EI’s Technical Partners
The technical partners support the EI in the delivery of good practice guidance for the wider industry to:
1. Demonstrate to regulatory authorities industry is operating using good practice 2. Assist industry operations /achieve their objectives. 3. Provide a forum for regulators to access industry on technical issues This is achieved by:
1. Setting the strategic direction for the EI’s Technical Programme 2. Funding the Institute to enable the running of committees and to resource consulting services as needed EI: Sharing energy knowledge…
Delivering good practice and professionalism
Energy Institute Current Technical (STAC) Members: • E.ON • Centrica • Statoil • Kuwait Petroleum Aviation • BP Exploration Operating • Maersk Oil North Sea Ltd Company Ltd • Murco Petroleum Ltd. • BP Oil UK Ltd • RWE npower • Shell UK Exploration & • Shell UK Oil Products Ltd Production • Saudi Aramco • ConocoPhillips • Total E & P UK plc • Phillips 66 • Total UK Ltd • Talisman Energy (UK) Ltd • Nexen • ExxonMobil • ENI • BG Group • Premier Oil • Chevron • WFS • EDF • International Power • Valero • Dong Energy • SSE • Statkraft • Scottish Power • Vattenfall
EI Technical Committees – Developing Good Practice Technical Guidance for the Energy Industry
Process Safety Committee (PSC) ØCross sector coverage of safety, human factors, electrical classifications etc
Corrosion Management Committee (CMC) ØUpstream vehicle for Corrosion Engineering and Management Good Practice Guidance ØRecently CMC (and its published Guidance) was cited in the HSE KP4 Interim Report Presentation (November 2012, Aberdeen) as a major contributor to the success of the Industry in delivering on KP4 Corrosion Related Issues
Ageing and Life extension Working Group (ALEWG) ØTechnical Guidance development for upstream Industry ØLinked into equivalent downstream activity for cross learning Øand represented on cross-energy industry ALE Forum Recently Published Guidelines...... for the Subsea Industry Recently Published Guidelines for the Subsea Industry Subsea AVIFF – Avoidance of Vibration Induced Fatigue Failure
Overview
ØEI Subsea JIP for avoidance of vibration induced fatigue failure in process piping – Project S1116 ØFunding in place via EI Scientific and Technical Committee (STAC) ØBuilds on the ‘topsides’ version of the EI Guidelines for vibration induced fatigue of process pipework, but adds new screening methods and guidance on design, simulation and monitoring ØSteering committee includes BP, Chevron, Nexen, Shell, Total, HSE Subsea AVIFF – Avoidance of Vibration Induced Fatigue Failure
Subsea Experience
ØAssessment of subsea systems to vibration-induced fatigue has been largely limited to vortex-induced vibration (VIV) of riser systems and unsupported pipeline spans (i.e. environmental loading)
ØPiping vibration due to process excitation has started to become an issue on manifolds and jumpers, in part associated with increasing flowrates
ØAdditional problems have been experienced with valves and instrumentation Subsea AVIFF
Objective
ØProduce engineering guidelines for use at the design stage or when changes to existing systems are being contemplated
Emphasis
ØFor new designs, ‘designing out’ the issue ØFor existing equipment, identifying and mitigating the threat
Timeline
ØFirst meeting June 2011 ØDrafting completed end 2012 and has been Balloted ØIncorporation of final corrections before formal publication – early Q3 2013 Subsea AVIFF Subsea AVIFF Subsea AVIFF
Vibration excitation mechanisms included:
ØFlow induced turbulence / multiphase flow
ØPulsation: flow induced excitation (deadleg)
ØPulsation: flow induced excitation (rough bore risers/jumpers)
ØHigh frequency acoustic excitation (acoustic fatigue)
ØSurge/momentum changes due to valve operation
ØCavitation and flashing
ØVortex induced vibration Subsea AVIFF
Rough bore flexibles: ØDiscrete frequency excitation generated by flow instability / vortex shedding ØGenerally confined to ‘dry’ gas systems ØFrequency range: typically up to 300 Hz but can be as high as 1000 Hz Subsea AVIFF
Forward vision:
ØDevelopment of better predictive models when detailed vibration analyses are required beyond the screening stage ØSmall-scale laboratory testing ØFull-scale laboratory testing ØIn-situ measurements ØCorrelation to analytical models – smart use of monitoring data and simulation Invite to Subsea Industry
Are there gaps in current Good Practice Guidance provision for the Subsea Energy Business?
EI can help you to put that Guidance in place Thank you Questions now or…later… For further information please contact Dr C Stewart on [email protected] Tel - 07751 357608
& see www.energyinst.org/home www.energyinstpubs.org.uk