Subscribe to our newsletter to receive the latest news and events from TWI:

Subscribe >
Skip to content

Evolution of ageing management

Back to Media and Events £43m expansion at TWI on course for completion by end of this year 11th International FSW Symposium 2016 – Call for Papers 2016 FSW symposium technical programme now available 2012 WJS Conference: Welding Advances, Skills and Quality 2012-07-construction-and-engineering-news-round-up Plant Inspection training meets need for competent workers LaserSnake enters its second phase 2013-07-creepimage-inspecting-creep-damage-in-critical-power-plant-components CSWIP awards first Plant Inspection Level 3 certification Monitoring noise output from onshore wind turbine machinery CSWIP certifications demonstrate increased popularity 2014-11-construction-work-on-expansion-project-approaches-completion TWI supports 2015 Business Excellence Awards 2015-05-contributions-invited-for-uk-strategy-for-additive-manufacturing 2015-10-cswip-employer-specific-ndt-in-compliance-with-iso-9712 Thermoplastics Welding and Joining – Call for Papers 2016-03-contour-seminar-2016 2016-09-cutting-edge-technology-for-nuclear-decommissioning Workshop to address dissimilar materials joining challenge 2017-08-david-williams-ieng-mweldi-an-engineering-inspiration The 10th Anniversary of the Institute of Rail Welding 33rd Conference on Ocean, Offshore and Arctic Engineering 3D Packaging event - Wednesday 23rd May 3rd Welding Technology Asia 2013 Conference 9th International Symposium on Friction Stir Welding A career in welding inspection A forum to share knowledge and exchange manufacturing ideas Novel solution for submersible pumps in oil and gas industry Accelerated Innovation Programmes launch at TWI ActFast: Real-time fibre-optic monitoring for laser welding Skills Development Fund Scheme provides extra TWI courses Additive manufacturing guidelines will support industry adoption Additive Manufacturing UK Strategy update available for download Addressing advances in laser additive manufacturing Industry benefits of composites microwave processing Advanced electron beam facilities meet advanced industrial challenges Materials conditioning facility expands exposure testing Advanced ultrasonic full matrix capture inspection software launched Aerospace set to benefit from £3.8m research collaboration African company approaches TWI for plastics welding training AIM aims higher - and increases its scope Alan Taylor to represent TWI at international conference Amino wins TWI Award for Technology Engineering Anglia Ruskin students line up for Animation Award Announcing The Welding Institute's new website Materials, Corrosion and Surfacing Week 2012 Announcing TWI's new website SkillWeld apprentice set for WorldSkills São Paulo 2015 Apprentice welder wins medallion at WorldSkills 2015 Are you making the most of Information Services? TWI supports scholarships for the future of engineering Armourers & Brasiers' awards open for entries Students complete Nuffield research placements at TWI Asbestos detection made easier and more reliable 'Ask the expert' webinar series launch proves a success ASME issues White Paper on auditing of welding BS 7910:2013 - Assessing flaws in metallic structures AWFTE to hold first all-day forum at TWI Aviation Industry Corporation of China collaborates with TWI Back to work with TWI's 2018 'Business Resolutions' BeamAssure™ – electron beam welding quality assurance tool Becoming an Engineering Technician with TWI New centre for Advanced Manufacturing Technologies launched Best young welders' teams from throughout Europe will compete Blended learning gets results for Spanish NDT students Boccard UK engineers receive plastic welding training from TWI Brazilian student sees advantage of blended learning course Structural defect detection for monitoring bridge health Brunel Innovation Centre PhD candidate receives TWI award BS 7910:2013 receives first amendment Exploring technologies at International Graphene Summit Business and Management Skills Training from TWI Call for papers: 11th International FSW Symposium Call for papers: 12th International FSW Symposium Call for papers: International Ocean and Polar Engineering Conference Britain's most successful entrepreneurial business cluster Cambridge Business Week 2013 to launch on 18 March at TWI Cambridge MP Julian Huppert visits TWI Cambridge News recognises TWI in top 15 Cambridge businesses Cambridge technology, TWI and the Bloodhound SSC project Cambridge student, Emma Young completes placement with TWI £19.5m project launched for Port Talbot engineering centre CE Marking of Welded Construction Products Celebrating success - spotlight on young engineers Celebrating success as £43M construction programme takes shape at TWI Celebrating the publication of The Cambridge Phenomenon Cementing and polymers corrosion webinars scheduled for autumn Centre of excellence created for the next industrial revolution Charity funds boosted by over £5000 after TWI's Christmas gift TWI CEO Christoph Wiesner awarded OBE Ultrasonic imaging climbing robot passes field trials Coatings and surface engineering: addressing the needs of industry Cold spray experts launch all-round introduction course CROWN project commended for offshore wind corrosion work Collaborative project improves safety on Turkish railways Collaborative project to improve aerospace manufacturing Combatting ice and erosion in extreme low temperatures - EIROS Combining Cathodic Protection with Aluminium Coatings TWI at Engineering and Construction Recruitment Exhibition TWI Composites Expert to Speak at Engineering Conference Construction has started on the new facility for South East Asia Demonstrating excellence in welding Designed for future growth: TWI celebrates construction milestone Vibration-based in-flight composite health monitoring Did you attend TWI's Welding Exhibition? See what you missed… Applying Industry 4.0 to joining and associated technologies Digital twin technology wins environmental business award Double success for TWI in RoSPA Awards 2011 Dr Melissa Riley represents TWI at international conference Ice-repellant coating for aerospace and energy industries EngD student wins Richard Dolby Rolls Royce Prize Welding Institute Engineering Council Registrations increase Engineering laboratory marks new era of R&D at TWI Engineers develop chewing machine to test denture adhesives Entrepreneur tours TWI Technology Centre (Wales) Entry is now open for SkillWeld 2016 European Laser Innovation Award Event update: Laser cutting as a tool for decommissioning Evolution of ageing management Exciting opportunities for chemiluminescence measurement Experts present papers at NACE corrosion conference 2018 Addressing challenges in the integrity of mooring chains Exploring opportunities with friction stir welding of steels Extending Aircraft Life Using Cold Spray Technology Face-to-face talks prove a success at Schweissen and Schneiden Familiarisation Course to EN ISO 3834 Fast Access to Metals and Consumables Data Online AILU awards recognise TWI laser technology innovators Fibre delivered laser beam cutting optimisation First MPhil student graduates from NSIRC First TWI Training blended learning course goes live TWI welcomes delegation from the Ministry of Works, Malaysia Focus on Events Seminar to focus on linear friction welding applications Follow @TWI_Ltd – now going live on TWItter! Forthcoming apprenticeship levy for large UK employers detailed Franco-British Symposium on Composite Materials Free mooring chains event scheduled for April Free technical support boost to the offshore wind industry Friction stir welding – enabling worldwide engineering success Friction stir welding – joining the future of industry Friction stir welding - submit your abstract Friction stir welding and Japanese jewellery UK friction stir welding courses see increasing demand Friction stir welding focus in China Friction stir welding of high performance steels Friction stir welding symposium programme available for download Friction stir welding inventors lead training courses Friction stir welding, spreading the news From the Armed Forces to EngTech - A Continuing Career Development Fullagar Technologies make first product sale TWI and SSA unite over maritime funding New sensor technology for safe shale gas extraction funded Fusion reactor developers come to TWI for NDT training Gain recognition with Professional Membership Gammax IIS, Bury St Edmunds, employs Weldspec and Welderqual Gareth Hurrell wins Advanced Engineering Apprentice Award Gathering of experts at 2016 NSIRC Annual Conference Geomembrane lining projects demand plastics welding skills in India BP joins TWI in UK's first industry-led postgraduate centre Plastics welder training builds momentum in Nigeria Glory of India Gold Medal award winner Mr. Pardikar joins TWI India Go-ahead for TWI expansion at Granta Park Government funds £10 million technology hub in Teesside Government Minister learns of TWI's Asia connections Graduates visit TWI to capitalise on Industrial Membership Best practice for nuclear construction industry welding BIS Chief Scientist and Director of Innovation visit TWI Has your PCN NDT Certification been voided? TWI Can Help… Her Royal Highness The Princess Royal opens new laboratories at TWI High-pressure hydrogen testing at TWI Thermal spraying facility opens for industrial research Yorkshire MP pays visit to TWI in Rotherham Hot Gas and Extrusion Welding Appreciation: a new course from TWI IIW Annual Assembly 2012 Update on CPD for Welding Institute Professional Members The Lloyd's Register Foundation joins TWI Advisory group promote novel NDT methods in aerospace Industrial Member comes to TWI to learn about available support Industrial Member Invitation Industrial membership enhanced by SSA affiliation Innovation Centres at TWI deliver progress for industry Innovation ensures thermoplastic storage tank integrity UltraSteamLine improves high temperature inspection CSWIP certification for strengthening of concrete structures INTRAPID produces rapid in-line laser AM inspection systems Introducing Google Search on TWI's website Introducing The Test House apprentices Introducing the TWI Virtual Academy: studying on your own terms Introducing TWI on YouTube Investigating geothermal coatings for the future of renewable energy Investigating the use of lasers for nuclear decommissioning Art exhibition leads to new method of laser metal deposition Irish Rail calls TWI for bespoke visual inspection training JEC innovation award for fibre-reinforced plastics process consortium Join TWI's trade mission to South Africa in March 2014 Joining in the spotlight Joint industry project to develop mobile rail head repair solution Laser research drives greater take-up of cutting technology Laser scanner improves TWI weld analysis services for Members Lasers for decommissioning: the story so far Sawston Village College mark WW1 centenary with weld project Leading Edges in Welding: Summer School in Modelling of Welding Engineering test centre set for Alconbury Enterprise Campus Lean Six Sigma Training Learning from recent nuclear construction projects LEP deal launches plans for a new large-scale test facility at TWI Lifting the lid on innovation: exploratory projects at TWI Linear friction welding review demonstrates industry expertise Welding Institute's latest Engineering Council registrants Local MP meets TWI apprentices Long range ultrasonics testing for composites Lord Heseltine opens new TWI technology and training centre Rail infrastructure project to deliver asset management tool Malaysian students visit TWI Yorkshire branch Solutions for aero engineering at Advanced Engineering Show Meet The Welding Institute team at UK engineering recruitment event MoU between ALFED and TWI enhances collaboration MEP for the East of England visits TWI Additive manufactured medical implants to enter mainstream MFE Formwork applies friction stir welding technology 'Mind the doors' – New project investigates train door failure Mobile electron beam welds for fabricating large structures ModuLase - combining laser processes for the future of manufacturing Advanced ultrasonic inspection for mooring chains in water Move to new R&D village for TWI Technology Centre (Wales) Multimillion-euro project launched to boost European shipbuilding Names of latest Engineering Council registrants published today Nanosecond pulsed laser expands opportunities for project work National champion announced at SkillWeld 2012 National offshore wind structural design standard needed, now NSIRC to operate from new, expanded facilities at TWI NDT Voiding of PCN certification from NDT International New and upcoming integrity management software and training from TWI New Granta Centre manager guarantees premier conferencing New benefit for TWI Members: free access to Welding Abstracts journal New CNC Equipment Installed In The Test House Project investigates Powder Metallurgy for astrospace use New welding procedures CSWIP course launched New developments in plastic welding highlighted New eBooks added for Professional and Industrial Members New Electromagnetic Fields (EMF) Directive published New Engineering Council registrants published New facility for testing the barrier performance of polymers New fracture testing accreditation New fracture toughness testing standard published New Friction Stir Welding alert service from TWI New home and new capabilities for TWI in Middlesbrough New inspection and training facilities for TWI's partner in Nigeria New project to advance laser additive manufacturing New live-streaming microscopy provides more access for Members New manufacturing process supports Hayter's winning position Polyethylene pipeline testing service launches in N. America Investigating real-time testing and monitoring of pipelines New research and technologies showcased at IIW conference New research into cost-effective laser-assisted cold spray New Sector Manager for Energy New specialist equipment and project to improve tidal energy New training course – Welding of Moulded Plastic Components New TWI article breaks down the changes to ISO 15614-1 New capabilities shown during seminars in China and Japan New TWI e-book collection available to Members New ultrasonic testing courses from the TWI Virtual Academy New version of RiskWISE® released New video takes an in-depth look at TWI underwater inspection courses New welding apprenticeship standards receive government approval New Welding of Moulded Plastic Components course New X-ray microscope strengthens TWI imaging capability New-look TWI website goes live CII and TWI awareness seminar in composites technology News from Weldasearch Nominations for The Welding Institute Annual Awards Nominations invited for the 2017 Welding Institute Awards Nominations invited for The Welding Institute Annual Awards 2016 Nominations now open for The Welding Institute Awards 2018 Nominations open for The Welding Institute Annual Awards 2015 Novel processing technique used for Made in Sheffield Awards NozzleInspect NSIRC invites PhD proposals from leading universities NSIRC welcomes first BP-sponsored PhD student NSIRC welcomes its first PhD student Nuclear construction lessons learned - report published Nuclear Meet-the-Buyer event brings companies together Offering expertise to tackle knife crime epidemic Offshore Wind Manufacturing Innovation Support Simulating real-world conditions for oil and gas research Online tool launched for electromagnetic field assessments Open Day sparks the start of a new era of research for TWI Young welders and metalworkers recognised at WorldSkills UK TWI offers extra provision for non-native English speakers TWI paper among most popular in Pipeline Engineering Journal Pedalling Revolution - TWI employee set to cycle from Wales to Greece Phased Array Ultrasonic Training – An Innovative Approach PhD student sponsored by TWI wins best paper at symposium Pioneer of CO2 laser development revisits TWI Pioneering tests being conducted on bespoke TWI rig Plant Integrity applies guided wave expertise to handheld device Plant Integrity exhibits at Middle East Corrosion Conference Plant Integrity exhibiting at the IPEIA Conference, Alberta, Canada Plant Integrity launches new promotional video Plant Integrity Ltd to exhibit at 2017 API Inspection Summit Plant Integrity team is at CORROSION 2017 Plastics welding experts answer your questions at Aquaculture UK 2014 Polymers expert delivers graphene talk at TWI PolyTank project tests joints in thermoplastic storage tanks Postgraduate courses unveiled at NSIRC Power news round-up - November 2011 Workshop review of industry concerns and perceptions Preparing students for industry: the Brunel Innovation Centre Benefits of Professional Membership of The Welding Institute Quality control project could transform laser welding Developing technology to reuse industrial waste heat Purpose-built pressure testing facility opens for business at TWI Purpose-built pressure testing facility to be constructed at TWI Raising our profile – TWI launches a new corporate brand Reducing impact of air transport using additive manufacturing Register for Welding Institute Structural Integrity Meeting Registration opens for TWI BS EN ISO 15614-1 (2017) training Registration open for 2017 Structural Integrity Conference Registration open for the UK's national welding competition Registration opens for 11th International FSW Symposium Reinforced concrete bridges get the NDT treatment - CROSS-IT Report examines state of engineering in the UK Industry hub focuses on finding solutions to real problems Rice and easy – Ranger risotto cook-off success Richard Dolby / Rolls-Royce Prize launched RJD Engineering gains Factory Production Control system Certification Robotic automated NDT inspection boost for the aerospace industry TWI celebrates National Women in Engineering Day TWI celebrates National Women in Engineering Day Rolls-Royce's Martin Boyd discusses the benefits of becoming an IEng SAFERAIL concludes to fanfare of approval Safety warning issued following catastrophic clamp failure Scale of TWI expansion captured in aerial photography Audit shows TWI as integral to innovation New building to house TWI's structural integrity expertise Sharc Matter: First -time market access to TWI's VitoNano Technology Shipbuilding industry moves towards friction stir welding revolution Showing expertise in corrosion safety, investigation and assessment SIRF drives £150m Structural Integrity Research Initiative at TWI SkillWeld medallist goes on to take gold at EuroSkills 2016 SOCAR and TWI celebrate new competence training partnership Tate Modern use solvent technology for art restoration Spaces available for workshop on waste-to-energy reliability Stainless steel fabrication seminar Aerospace inspection systems to feature at forthcoming event STEM Ambassador of the Year award open for entries STEM Fair workshops inspire next generation Stephen Kinnock MP supports new business initiatives at TWI Wales Strengthening links with Chinese industry Structural applications of ferritic stainless steels Budding engineers join Structural integrity project Students begin UK's first MSc in Structural Integrity College students learn a valuable lesson in engineering Progressing graphene as a supercritical fluid barrier Effective operation of undersea well control valve stacks Subsea testing from ROVs BS 7910 global training courses get underway Successful engineers graduate from EWF/IIW Diploma in Welding Event and website highlight additive manufacturing at TWI Successful event unites Scottish SMEs and nuclear companies Symposium highlights developments in linear friction welding Sue Dunkerton awarded OBE for Services to Health and Engineering Meadows children learn about cooking with TWI chef TWI Pakistan celebrates World Corrosion Awareness Day 'SUPERSLAB' to meet thicker high-strength steels challenge SurFlow: secure, robust, integrated data transfer through composites Symposium celebrates 25 years of friction stir welding Taking the next step as a CSWIP Welding Inspector Tame Plastics awards welding certificates to competent employees Tank Integrity Monitoring - non-invasive monitoring of storage tanks Team Romania scoops gold in WeldCup 2015 Technical Group Meetings in October Meeting discusses on North Sea oil and gas asset management Technical Seminar - Railway Asset Management Technician and STEM Ambassador of the Year awards open TWI and SSA deliver joint maritime event Technology Engineering - Widening Horizons Technology tournament inspires young engineers to fly high Teletest business transfers to Eddyfi Technologies Teletest Focus just gets better with WiFi TestPEP enters final year of tests for NDE of plastics pipes The 38th Aerospace Industry Panel meeting The 50-year view of fracture Plant Integrity Earns Award for Pipeline Corrosion Detection The Great British Weld-Off skill search launches for 2014 Engineering event attracts international delegation to TWI The Test House Gains UKAS Accreditation For Digital Radiography The Transport Systems Catapult and TWI Announce Partnership The Welding Apprentice Group Training Association (WAGTA) The Welding Institute Annual Awards and Dinner 2014 The Welding Institute Annual Awards and Dinner 2015 The Welding Institute Annual Awards and Dinner 2016 The Welding Institute Annual Awards and Dinner 2017 Welding Institute Annual Conference to focus on AM The Welding Institute Annual Dinner 2012 The Welding Institute Awards 2012 - Recognising Achievement The Welding Institute Awards 2013 The Welding Institute Awards 2018 – Applied Technology Award New 'trailblazer' helps transform apprenticeships in England The Welding Institute launches group for female engineers The Welding Institute promoting career development at NECR exhibition Meeting reinvigorates Welding Institute's Liverpool branch Welding Institute branch promotes welding careers Thousandth Members' report launches web-accessible archive Ties strengthened with Indian industry at UK–India Manufacturing Week Top 100 for TWI business performance in 2012 TowerPower to reduce costs for offshore wind inspections Training boosts welding skills for Murphy Group engineers Training workshop delivered to power company Eskom True Stress-True Strain Tensile Testing to Failure TWI – expanding its reach across India TWI acquires 3D printer capable of printing polymer material TWI agrees research and training collaboration with GMRI, China TWI and DNV collaborate to host 'Welding Experts' event New project aims to spread the use of additive manufacturing TWI and Lloyd's Register launch Fullagar Technologies initiative TWI and Lloyd's Register projects advance take-up of AM TWI and Rolls-Royce team up to develop Welding Engineering Diploma TWI and Swagelining Ltd advance CSWIP in subsea pipe lining TWI announces new selective laser melting training course TWI announces Technical Open Day in conjunction with WeldCup TWI announces upgraded Members' Showcase on its website Mike Russell appointed as TWI Operations Director TWI Arkwright Scholars a step closer to engineering career TWI at Materials Performance and Welding Technologies 2017 TWI at NACE Corrosion 2018 conference and exposition TWI attends tribology anniversary reception TWI attends UK-India Manufacturing Week TWI awarded SPARK grant with the University of Glasgow TWI celebrates 50 years of pioneering group research Signing ceremony seals TWI partnership with Yayasan Felda TWI opens a regional office in Calgary, Canada TWI gains independent status to certify structural steelwork TWI Certification chief executive to become president of EWF TWI Certification partners with construction skills scheme TWI Certification Ltd marks 20 years of accreditation TWI charters an active approach to IT TWI chef inspires next generation at school careers workshop TWI China TWI combines heritage with innovation for the Morgan Motor Company TWI commence 'SubSeaLase' decommissioning project TWI composites specialist to speak at National Space Centre TWI contributes to LIGHTer International Conference TWI helps grow Innovation, Research and Technology sector TWI delivers plastics welding training course to Fusion Marine TWI develops essential metallography training to ensure best practice TWI Doubles the Trevor Gooch Corrosion Laboratory Digital Twin Technology to monitor offshore assets TWI engineer wins international award for research TWI enters research centre agreement with AECC BIAM, China TWI agreement with AVIC Manufacturing Technology Institute TWI exhibits new construction materials at Ecobuild 2016 TWI expansion bringing jobs and investment to Teesside TWI expert on panel for Structural Integrity conference TWI experts available for consultation at NACE Corrosion 2015 TWI experts keep flying legend airborne TWI extends bespoke training course to Uganda TWI extends capability to test adhesives and composites TWI extends its training programme in South Africa TWI Finite Element Analysts achieve accreditation TWI flies high at Farnborough International Air Show TWI expert appointed visiting professor by top university TWI helping to spearhead skills initiative in India TWI helping UK businesses to 'Access India' TWI helps bring Philips Avent's thermoplastic nebulizer to market TWI helps Engineering College meet industry demand for staff TWI helps push European car body initiative TWI holds successful cold spray technology course TWI hosted Innovation Centres continue to grow TWI hosts Chinese delegation TWI hosts graduation ceremony for EWF/IIW Diploma engineers TWI hosts innovation and technology open day TWI hosts ISO meetings for plastic pipe use and production TWI hosts graduation ceremony for IIW/EWF Diploma engineers TWI hosts successful 3rd International Linear Friction Welding Seminar TWI hosts successful robotics challenge for primary school pupils TWI hosts successful exploration and production workshop TWI Industrial Members eligible for discounted rate at OMAE 2016 TWI Industrial Membership Survey 2013 TWI Industrial Trends Analysis - Free to Industrial Member Companies TWI Information Services on the move TWI adds to new standard for thermoplastic component joining TWI inspection team in high demand at JEC World, Paris TWI joins 'Integral' nuclear waste project TWI joins research centre for 'SIMPLE' nuclear project Project to detect hydrogen attack opens to partners TWI lands NDA innovation award for nuclear decommissioning TWI launches Award for Technology Engineering in International Markets TWI launches course for advanced digital radiography TWI launches new MSc in Engineering Leadership and Management TWI loaned new MIG welding robot by OTC Daihen Europe TWI Nigeria celebrates Grade 2 Painting Inspection course TWI NDT expert to speak at major Indian industry event TWI opens a new Training and Technology Centre in India TWI participates in welding software project TWI participates in welding software project TWI and leading university establish new innovation centre TWI to train Environment Agency landfill inspection staff TWI and Teesside University launch Health Innovation Centre New technology key to renewable energy and aerospace work TWI pioneers 'invisible weld' process TWI Pioneers New Dissimilar Weld for European Space Agency TWI placement student scoops innovation prize TWI plays its part in the World Land Speed Record attempt TWI plays its part in Working to Engineer a Better World TWI presents at Offshore Europe 2015 TWI provides fracture toughness training and consultancy in Singapore TWI provides support for Fracture Toughness Testing in China Ground-breaking developments for steel friction stir welding TWI reaches £1m US Membership TWI at committee meeting for international offshore standard Research Director gains Royal Academy of Engineering honour TWI rewards outstanding undergraduate engineering projects TWI to develop underground storage tank monitoring system TWI set to attend the 5th CERAMIC Network Partnership in France TWI set to exhibit at JEC World 2017 next month TWI set to exhibit at Offshore Wind Energy 2017 next month TWI to exhibit at 55th Annual British Conference on NDT TWI to exhibit at 56th Annual British NDT Conference TWI set to exhibit at the Farnborough International Airshow TWI set to present at AWS Conference on Plastics Welding and Joining TWI set for International Thermoplastics Joining Conference TWI showcases technical news and videos on Facebook TWI signs Memorandum of Understanding with Saudi Aramco International FSW Symposium technical programme available TWI South East Asia commended by Malaysian government TWI trainer flies 11,000 miles for plastics welding course TWI streamlines total asset management solutions Depositing silicon carbide coatings by thermal spraying TWI supporting the 2016 Royal Institution Christmas Lectures TWI supports A-level engineering students TWI Supports Underwater Laser Cutting Project TWI supports West Suffolk's Outstanding Apprentice of the Year Award TWI Technology Centre Wales secures over €1m through EU programme TWI Technology Fellow given Visiting Professorship at LSBU TWI technology used for ground-breaking SpaceX flight TWI to exhibit at SPE Offshore Europe TWI to join American Petroleum Institute Subcommittee TWI to launch aerospace inspection software at the Paris Air Show TWI to present at aerospace and defence event in India TWI to present at major industry conferences in India TWI to welcome nine PhD students from Brazil TWI Training success story - Vera Dragoi Success for TWI's first blended learning course candidates eLearning package for CSWIP 3.1 Welding Inspector launched TWI welcomes collaboration with the Confederation of Indian Industry TWI welcomes David Willetts MP TWI welcomes first Lloyd's Register Foundation NSIRC PhD student TWI wins funding for engineering research centre TWI welcomes on board two Chinese technical institutes TWI wins Cambridge Business Weekly Award for International Trade TWI wins major contract with F4E TWI wins NDA award for second year running TWI project to develop flat-panel display recycling process TWI wins RIBA Awards TWI tender from French Radioactive Waste Management Agency TWI working to progress composites in the automotive industry TWI and UK Aerospace unite for Laser Welding R&D Project TWI-led project to reduce costs and improve aircraft efficiency Coatings team supports construction and project management Dr Melissa Riley presents paper at international conference TWI's Dr Philippa Moore: A role model for female engineers TWI's Dr Shiladitya Paul called as guest editor of Coatings journal TWI's flow loop available again after three-year testing TWI's NDT Group at BINDT: 2012 Ultrasonic testing courses provide learning options for all TWI holds materials workshop at Cambridge sixth-form college Ubisense wins TWI Technology Engineering Award UKTI mission to India explores opportunities for UK aerospace sector New equipment boosts ultrasonic inspection capability UAE seminar demos TWI's unique PolyTest inspection system University of Leicester signs NSIRC partnership agreement Upgraded surface engineering facilities showcased Version 4.3 of CRACKWISE® software now available Video series sheds light on studying a PhD with TWI Vince Cable celebrates technology and innovation at TWI Vince Cable India visit promotes UK business successes Visit Plant Integrity Ltd booth at Corrosion 2016 exhibition Visit TWI at First World Congress on Condition Monitoring Volumetric testing of polyethylene pipe joints with PolyTest Friction Stir Welding inventor honoured with building Webinars demonstrate the success of TestPEP Welding Abstracts Journal available electronically Welding industry reacts to government's apprenticeships call Welding Institute Annual Awards 2018 Foundation Degree in Materials Fabrication and Engineering Welding sparks interest at WorldSkills UK Welding the unweldable: TWI friction stir welds ODS steel Training partnership adds value to Malaysian Govt programme Welsh Minister Edwina Hart visits TWI Wales TWI gives first certification for Factory Production Control WindTwin project to revolutionise wind turbine technology Highlighting women in engineering: Ángela Angulo Wonderstuff - TWI provides adhesives expertise for new TV series Workshop explores state of play of mooring chain research World of work - Build it! World's first training CD on counterfeit electronic components World's largest linear friction welded component produced World's most precise weld made at TWI Wuhan Iron and Steel Corp celebrates TWI tech secondment Young engineers abuzz with talk of manufacturing tour Young engineers inspire the technologists of the future Young engineers to visit TWI
 
16 March 2016
[ Zoom ]
A petrochemical processing facility

This article, written by TWI Technology Fellow John Wintle, was originally published in the November 2015 edition of Managing Aging Plants magazine.

It is now over ten years since an inspector from the UK's Health and Safety Executive Hazardous Installations Directorate (HSE HID) called Harry Bainbridge came to me and said that there were a lot of plants in a poor physical condition around and what industry needed was a guide to manage ageing. The result was the publication of Research Report 509 – Plant Ageing: Management of Equipment Containing Hazardous Fluids and Pressure (2006). The rest, as they say, is history.

Of course, the subject matter was not new and not confined to the hazardous chemicals and refining sector. By the end of the 1990s the International Atomic Energy Authority had set out the principles of ageing management and published a series of guides to the management of ageing of different nuclear components and the European ageing aircraft programme had been running for several years. For the process industries, HSE Research Report 509 changed a mind-set in their approach to integrity management, as the management of ageing became a holistic interdisciplinary activity.

Historically, engineering plant was designed and constructed to function without major failure or repairs for a pre-determined design life. The design life was based largely on prior experience of similar constructions in similar duty and provided designers with a target from which corrosion allowances and fatigue lives could be conservatively assessed. Plant inspection was largely qualitative, prescriptive, periodic and judgemental, designed to confirm that the design assumptions had not been breached by service conditions and misuse beyond the design specification. If some deterioration was found, it was normal to repair the damage or replace the component rather than to attempt a fitness-for-service assessment or re-rating of the degraded component.

A combination of technological development and economic factors brought about the management of ageing. Low prices for oil and bulk chemicals, competitive pressures from Far East producers and a lack of investor confidence forced Europeans and Americans to adopt leaner operations and to keep equipment in service when previously it would have been replaced with new. The need to operate older equipment, combined with developments in understanding degradation mechanisms, inspection planning practices and non-destructive testing (NDT) technology, fitness-for-service assessment and repair techniques, created the conditions for a change in thinking from a ‘find and fix’ culture to a ‘predict and preserve’ mentality.

Degradation mechanisms

The understanding of corrosion degradation mechanisms and rates has largely been driven by experience of plant operation and failures. It is generally difficult to replicate plant conditions over the long durations involved in the laboratory through accelerated testing. A catalogue of degradation mechanisms for the petrochemical and refining industry was published in API RP 579, but a comprehensive guide of degradation mechanisms for a wider range of material–environment combinations has yet to be produced. The dependence of the occurrence and rate of progression of degradation on a wide range of process and product composition variables and material factors, such as temperature, trace elements, microstructure and hardness, may make such a task intractable.

There have been significant developments in the understanding of degradation for particular material–environment combinations. Conditions for the avoidance of external corrosion of stainless steels from pitting and atmospheric-induced stress corrosion cracking in marine environments are now becoming established. The susceptibility of ferritic materials and welds to attack in corrosive environments and the problems of hydrogen-induced cracking are becoming better known.

Operators often need to rely on measures of wall loss, pitting depth and cracking over a period of service to determine the corrosion rates for particular plant conditions. Tools such as trending analysis and statistical techniques are vital to make appropriate predictions. Even so, the ability to characterise damage for analysis in its true geometric complexity is still in the early stages. Experience of plant failures informs us that the causes of degradation can occur throughout the life of a plant. Defects introduced during fabrication or installation can be the root cause of failure in service, while problems during commissioning can result in premature ageing.

The possibility of fatigue cracking in welds over extended periods of cyclic service should be assessed using modern fatigue design methods. The bathtub curve of ageing and failure rate remains a useful model but may not reflect the reality of modern plants where quality management of design and construction reduce early life failures, and interventions during service can yield extended periods of reliable operation.

Risk-based inspection

Risk-based inspection (RBI) is an inherent part of the management of ageing. From the mid-1970s regulators in the UK were placing the responsibility for maintaining health and safety on the shoulders of industry that created the risk and set high-level goals for the prevention of dangerous occurrences. In 1989 the Pressure Systems and Transportable Gas Containers Regulations removed any prescriptive requirement for periodic inspection by requiring simply that owners of pressure systems should have a written scheme of examination drawn up or certified by a competent person that would ensure the detection of a defect that could give rise to danger.

This requirement forced operators to start to think about the particular locations in a plant where degradation mechanisms might cause a defect and where a defect could give rise to danger. As the regulator did not prescribe inspection intervals, operators were encouraged to consider the mechanisms and rates of degradation for each particular plant component and to select intervals that were appropriate to reasonably address the risk from a defect by timely detection.

The Institute of Petroleum’s code of practice in the 1980s allowed inspection intervals to be extended for some equipment based on favourable experience and technical understanding, but the new regulation gave this opportunity to all operators of pressure systems. Some sectors preferred to keep to the fixed inspection intervals that they had traditionally used as the costs and knowledge required to adopt RBI were beyond their means and capability.

The move towards RBI gathered pace during the 1990s. The American Petroleum Institute gave RBI a major boost following a joint industry project which resulted in the publication of Base Resource Document 581 and Recommended Practice 580. In the UK, the HSE published Research Report 363 on RBI practices in 2001, and this was followed by similar publications from industry-led bodies such as EMMUA. Other European regulators have been slower to recognise RBI as the preferred approach and it is only now that practices are beginning to change.

Inspection and NDT technology

Developments in inspection and NDT technology also created the platform for the management of ageing. Ultrasonic testing, with the introduction of advanced transducers and computerised signal processing over the past 30 years, has improved the reliability and quantification of detection, sizing and characterisation of defects in plant. Long-range ultrasonic technology, time-of-flight diffraction and other screening techniques such as eddy currents, acoustic emission and thermography and magnetic induction methods have added to the armoury of NDT that can be deployed in particular circumstances. The PANI trials in the 1990s still showed deficiencies in the practical implementation of industrial NDT and these led to a series of guidance documents covering the main techniques.

Fitness for service methods

If physical or functional degradation due to ageing mechanisms is to be managed then it is necessary to know the impact of the degradation on the performance of the component and to assess its fitness-for-service now and in the future given that further degradation may occur. For active components like pumps, valves and motors, a functional test checked against specification may be all that is required. Deterioration in passive equipment like vessels and structures is harder to assess since a fall-off in performance is not usually evident until final failure.

The evolution of fitness-for-service assessment procedures is aligned to the development of fracture mechanics of crack-like defects. It was largely driven by the requirement to evaluate defects in welded fabrications, particularly for nuclear pressure vessels, and later by the need to determine the fatigue lives of offshore welded structures, pipelines and risers. The effect of non-crack-like defects, such as localised corrosion, pits and gouges requires a different approach, and methods are still evolving. Modern finite element stress analysis is allowing the modelling of real defects and the ability to have a seamless interface between NDT and fitness-for-service assessment is a real prospect.

API Recommended Practice 579 is a compilation of fitness-for service assessment methods applicable for refinery plant designed to the ASME Boiler and Pressure Vessel Code. It contains many useful methods including those for assessing hydrogen and creep damage and equipment damaged by fire. However, the methods need to be translated for equipment designed to other codes where different safety margins and criteria apply. More generalised fitness-for-service procedures have been standardised in publications such as BS 7910 and FITNET.

Ageing management process

While ageing is usually associated with the physical deterioration of equipment, its scope also encompasses non-physical issues and other changes with the passage of time. For example, obsolescence may mean that original parts are difficult to replace, whereas changes in standards or technology can challenge the adequacy of the original construction. Lack of knowledge of the physical condition in uninspectable areas or loss of original design data and key operating records can undermine the confidence necessary for continued safe production.

Against this background a philosophy for the proactive management of ageing has evolved. In some respects it can be regarded as a management- of-change process. The management of ageing is a process that requires foresight of changes that will occur in the future from the extrapolation of trends based on historic data and the application of technical knowledge.

In its essentials the ageing management process can be broken into five steps. It requires an organisation to recognise what assets it has, understand what they do, know how important they are, determine what condition they are in and how fast this may change in the future, and evaluate what happens should they fail. On this basis an ageing management programme can be created to understand, predict, minimise, find and remediate the effects of ageing, with appropriate feedback. Making this happen in a busy company is not easy and requires senior management to set the policies and create the roles to champion its implementation.

Ageing management is an activity requiring a team of plant engineers and technical experts in fields such as materials technology, integrity management, inspection and NDT. Some companies have appointed managers with a wider asset management remit to co-ordinate and direct the management of ageing, supported by systems engineers who are the custodians of particular assets and design authorities who are the discipline experts concerned with design intent functionality and fitness-for-service.

Link to asset management and asset integrity management

The ageing management process forms part of a wider process called asset integrity management, which itself is a subset of the global process of asset management. British Publicly Available Specification (PAS) 55-1 defines asset management as systematic and co-ordinated activities and practices through which an organisation optimally and sustainably manages its assets and asset systems, their associated performance, risk and expenditures over their lifecycle for the purpose of achieving its organisational strategic plan.

It translates the organisation's strategic plan and policies into long-term objectives and plans and activities over the lifecycle of the asset portfolio where assets are created or acquired, utilised, managed, maintained, renewed, decommissioned and disposed. Asset integrity management is the process by which an asset’s integrity is maintained to deliver required levels of functionality, availability, reliability, survivability and interdependence. As well as considering the management of ageing, integrity management focuses on maintaining asset integrity through operation controls, planned maintenance, testing, refurbishment, upgrading and replacement.

It is difficult to find references to ageing within the context of asset management. For many types of assets, ageing is regarded as a natural process that is accommodated through periodic replacement once the asset no longer performs to its required level or sustains some level of failure. This position on ageing is, however, usually not tenable for physical assets in the high hazard industry sectors, such as the petrochemical and nuclear industries, where the risk of failure cannot be tolerated and components are not easily repairable or replaceable. In these sectors the proactive management of ageing becomes a necessity and a benefit.

Conclusion

The need to manage ageing plant is not new. The ability to do so effectively has improved markedly over the past 20–30 years with developments in understanding materials behaviour and inspection and NDT technology and fitness-for-service assessment procedures. These technical developments are allied to the evolution of the formalisation of systems for lifetime asset management and more specifically the management of asset integrity.

Different industry sectors are managing ageing in a way that is consistent with their context, character and culture, although the basic principles are common across all sectors. Industry forums and networks through different media are vital components for learning from experience and sharing knowledge and information within and across industry sectors. The launch of Managing Aging Plants magazine is to be welcomed and will surely make an important contribution to this field.

To find out how TWI's expertise can help support the life extension of your company's ageing assets, contact us.

For more information please email:


contactus@twi.co.uk