IWT-ECO-2000-1

1
ECOPRESS-OVERVIEW
Appendix 2 (p. 1/12)
Economical and safe design of pressure vessels
applying new modern steels
Sponsor EU-5th Framework, Project No
GRD1-1999-10640 Budget 3.9 MEURO, EU contrib
2.45 MEU (63) Co-ordinator SCIENTIFIC Dr. P.
Langenberg, IWT Aachen, ADMINISTR.Prof. W.
Bleck, RWTH Aachen, Duration 3 years, 1.1.2000
31.12.2002 Consortium 17 partners from
industry and research
2
ECOPRESS - AIMS
Appendix 2 (p. 2/12)

• Technically and economically optimised pressure
  vessels from modern steels QT-HSS, TMCP, DUPLEX
• Create conditions for removal of unnecessary
  conservatism of existing rules using modern
  reliability methods
• Apply modern design by analysis models instead of
  experienced based recommendations
• Propose recommendations for efficient design,
  manufacturing and testing for PV steels

3
ECOPRESS - CONSORTIUM
Appendix 2 (p. 3/12)
Industry Research centres University

Guy BAYLAC Consultant for Pressure Equipment
PSP
4
ECOPRESS WORKING CONCEPT
Appendix 2 (p. 4/12)
5
Status Report November 2000
Appendix 2 (p. 5/12)

• Workpackage 1 and 2 Review of limitations to
  modern steels for PV in design,
  manufacturing, testing and operation finished.
• Definition of example vessel for demonstration
  purpose of economic use of HSS ongoing.
• Material delivery finished in May 2000. Rolling
  finished. Delivery of material ongoing.
• Testing matrix for HSS, TMCP and DUPLEX decided.
• Type of welding decided mostly X-weld and some
  K-weld for qualification tests. WPS and PWHT
  conditions defined until end of year. Development
  of new S690 weld deposit for PWHT.
• Modelling of Limit State Design started and
  application of modern Structural integrity
  concepts decided (NOTE limit states are brittle
  fracture, ductiled fracture and ductile
  instability).

6
Preview 2001/1
Appendix 2 (p. 6/12)

1. Development of structural integrity models able
   to describe limit states of brittle
   and ductile fracture for PV.
2. FEM calculations serving for point 1.
3. Basic material characterisation of all plates.
4. Welding of the test plates QT and DUPLEX
5. Extended material testing of base metall and weld
   metal and PWHT weldments (fracture mechanics and
   wide plate), will go on through the year.
   Statistical data evaluation will serve as input
   to point 1.
6. Fabrication of dished ends from welded TMCP and
   testing of material taken after forming.
7. Biaxial tests on DUPLEX steels (only 6mm
   thickness possible)

7
ECOPRESS MATERIALS - DBF
Appendix 2 (p. 7/12)
8
ECOPRESS-MATERIALS-DBA
Appendix 2 (p. 8/12)
9
ECOPRESS DBF versus DBA
Appendix 2 (p. 9/12)
10
ECOPRESS Limit States
Appendix 2 (p. 10/12)
Limit state Design model Tests
Brittle Fracture Annex D (B), prEN 13445 Annex C, Eurocode 3 SINTAP small scale tests Fracture Mechanics Larges scale tests
Ductile Fracture Leak before break criteria New ideas SINTAP small scale tests Fracture Mechanics Larges scale tests
Ductile Instability Stress Limit criterion Influence Y/T-ratio Bi-axial tests small scale tests
Fatigue High cycle fatigue Low cycle fatigue No tests Literature only
11
ECOPRESS Test Matrix
Appendix 2 (p. 11/12)
12
ECOPRESS - EXPLOITATION
Appendix 2 (p. 12/12)

• Influence on prEN13445 (CEN TC 54)
• Seminar for PV designer, manufacturer and
  customer
• International discussion in EPERC
• CD-ROM and Internet presentation