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Development of Quantitative Radiographic Tomography technology for the in-situ Inspection of welded austenitic safety critical pipework in the nuclear power generation and petrochemical industries

Objective

Austenitic stainless steel is often used in the construction of critical pipework in nuclear power plant and petrochemical plant due to its resistance to corrosion and its high fracture resistance. Pipelines are usually constructed by joining sections of pipe together, using welding. These welds can host many types of defects that may go undetected if not inspected and in-service and under stress these defects can grow and lead to mechanical failure through mechanisms such as fatigue.

Currently inspecting austenitic welds using ultrasonic techniques is difficult due to the materials inhomogeneity and anisotropy that causes the beam to scatter at grain boundaries. Conventional Film Radiography is the current technique used for inspecting these materials as the grain structure does not significantly affect the radiographic results. Film radiography is limited due to its long exposure times and the information available from the inspection results because the output provides a 2D image of a 3D object. This causes the superimposition of internal features (reducing the contrast sensitivity) and the inability to position the depth of defects in the direction of the X-ray beam.

The TomoWELD project proposes to develop a robust mobile X-ray tomographic system for the accurate inspection of austenitic steel welds at the sensitivity levels required in the nuclear industry. The application of X-ray Computed Tomography will overcome the limitations of current inspection techniques by providing 3D information of the internal structure allowing detailed cross sectional analysis and dimensional measurements to be obtained.

The design and manufacture of this system requires further development of existing X-ray tomography techniques and algorithms, hardware (mobile X-ray source and digital detector arrays) and robust field manipulators for easy onsite operation.

Field of science

  • /humanities/arts/modern and contemporary art/film
  • /medical and health sciences/clinical medicine/radiology/medical imaging/x-ray radiography
  • /medical and health sciences/clinical medicine/radiology/medical imaging/computed tomography

Call for proposal

FP7-SME-2012
See other projects for this call

Funding Scheme

BSG-SME - Research for SMEs

Coordinator

TWI LIMITED
Address
Granta Park Great Abington
CB21 6AL Cambridge
United Kingdom
Activity type
Research Organisations
EU contribution
€ 84 223
Administrative Contact
Debbie Mcconnell (Ms.)

Participants (6)

OY AJAT LTD
Finland
EU contribution
€ 269 481
Address
Tietotie 3
02150 Espoo
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Administrative Contact
Klaus Härkönen (Mr.)
PRODUCT TECHNOLOGY PARTNERS
United Kingdom
EU contribution
€ 158 277
Address
Cowley Road William James House
CB4 0WX Cambridge
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Administrative Contact
Rachel Wood (Mrs.)
NEXUS ENGINEERING OOD
Bulgaria
EU contribution
€ 150 521
Address
Ul. Riben Bukwar, Bldg. 12, Wh.9,
1330 Sofia
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Administrative Contact
Svetoslav Kulzarov (Mr.)
INNOSPEXION APS
Denmark
EU contribution
€ 302 281
Address
Horseager 14
4330 Hvalso
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Administrative Contact
Joergen Rheinlaender (Dr.)
BUNDESANSTALT FUER MATERIALFORSCHUNG UND -PRUEFUNG
Germany
EU contribution
€ 64 200
Address
Unter Den Eichen 87
12205 Berlin
Activity type
Research Organisations
Administrative Contact
Eva-Maria Mueller (Mrs.)
AREVA GMBH
Germany
EU contribution
€ 55 017
Address
Paul-gossen-strasse 100
91052 Erlangen
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Administrative Contact
Christian Weisse (Mr.)