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TTF2 High Strength Steels

EPERC. Appendix 7 (p. 1/9). TTF2 High Strength Steels. European Pressure Equipment Research Council. TTF2 REPORT TTF2 – HIGH STRENGTH STEELS 87 members from 12 countries Chairman : Pierre Bocquet (Usinor Industeel) – F Deputy Chair : Stefan Winnik (Exxon Chemical) – UK

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TTF2 High Strength Steels

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  1. EPERC Appendix 7 (p. 1/9) TTF2High Strength Steels European Pressure Equipment Research Council TTF2 REPORT TTF2 – HIGH STRENGTH STEELS 87 members from 12 countries Chairman : Pierre Bocquet (Usinor Industeel) – F Deputy Chair : Stefan Winnik (Exxon Chemical) – UK Co-Chairman : Franz Hukelmann (JRC Petten) – EU 1 EPERC General Assembly, Milan, 27th and 28th November 2000

  2. EPERC Appendix 7 (p. 2/9) TTF2High Strength Steels European Pressure Equipment Research Council TTF2 – OBJECTIVES • Achieving economic advantage by thickness reduction of HSS • Determination of regulatory and fabrication limitations to the use of HSS • Optimisation of the design rules based on materials data and in-service experience • Damage analysis and life assessment at plant of PE components fabricated of HSS. 2 EPERC General Assembly, Milan, 27th and 28th November 2000

  3. EPERC Appendix 7 (p. 3/9) TTF2High Strength Steels European Pressure Equipment Research Council TTF2 – CONTRIBUTION IN KIND • Determination of regulatory and fabrication limitations to the use of HSS = collection of case histories. • Technical exchanges on priority themes: • Environmental effects : Hydrogen (May 2000) --> TTF7 • Matching problems of welding consumables (Nov. 2000) • Cracking sensitivity of welds – To plan : 2001 • Yield strength/tensile strength ratio (Nov. 2000). 3 EPERC General Assembly, Milan, 27th and 28th November 2000

  4. EPERC Appendix 7 (p. 4/9) TTF2High Strength Steels European Pressure Equipment Research Council PROJECTS SUPPORTED BY EU • HSD – Coordinator IS (F) – DG III – 01/1999 – 02/2001 • ECOPRESS – Coordinator RWTH (D) – DG XII – 01/2000 – 12/2002 • ALIAS-RDC – Coordinator JRC Petten – DG III – 09/2000 – 10/2001 • ELIXIR – Coordinator MBEL (UK) – DG XII – 01/2001 – 12/2003 fusion of a TTF2 proposal : SIMPHISS and a TTF5 proposal : AMIROWS 4 EPERC General Assembly, Milan, 27th and 28th November 2000

  5. EPERC Appendix 7 (p. 5/9) TTF2High Strength Steels European Pressure Equipment Research Council HSD PROJECT - STATUS • Demonstrate the present design codes may be adapted to TMCP and QT steels, and provide informations/recommendations for standardisation. • Most relevant problems addressed : PWHT and Procurement of flanges and fittings. • Prototypes ready for testing. Coordination with ECOPRESS project. 5 EPERC General Assembly, Milan, 27th and 28th November 2000

  6. EPERC Appendix 7 (p. 6/9) TTF2High Strength Steels European Pressure Equipment Research Council ECOPRESS PROJECT - STATUS • Aims : Create conditions of removal of unnecessary conservatism of existing rules using modern reliability methods (DBA) and propose recommendations for efficient design, manufacturing and testing of PV steels. • Step 1 – Analysis – completed • Step 2 – Material characterisation – on going 2000/2001 • Step 3 – Modelling – concepts selected – on going 2001 • Step 4 – Validation on large scale tests – 1st semester 2002 • Step 5 – Application – safety concept and design recommendations 2002. 6 EPERC General Assembly, Milan, 27th and 28th November 2000

  7. EPERC Appendix 7 (p. 7/9) TTF2High Strength Steels European Pressure Equipment Research Council ALIAS-RDC PROJECT - STATUS • Aims : Apply new statistical methods to reduce the conservatism of design values. • Detailed software specification are made and the data content is specified. • Data collection starts. 7 EPERC General Assembly, Milan, 27th and 28th November 2000

  8. EPERC Appendix 7 (p. 8/9) TTF2High Strength Steels European Pressure Equipment Research Council ELIXIR PROJECT - STATUS • Aims : Demonstrate the possibility to avoid PWHT when using advanced repair or fabrication methodology. • Industrial applications : • PE : petrochemical/energy generation • Non PE : maritime transport / offshore structure. 8 EPERC General Assembly, Milan, 27th and 28th November 2000

  9. EPERC Appendix 7 (p. 9/9) TTF2High Strength Steels European Pressure Equipment Research Council FUTURE ACTIONS • Prepare an EPERC Bulletin and a workshop on HSS / materials. • Determine an action plan on the welding problems of HSS. • Prepare design recommendations from results of HSD. 9 EPERC General Assembly, Milan, 27th and 28th November 2000

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