Course Modules - Offshore Inspection
Module Leader
Dr Fuat Kara
Aim
To provide students with an in depth understanding of the underlying science and application of a variety of inspection techniques used on structures in the offshore environment.
Syllabus
- Underlying principles defining why inspection is necessary
- Marine growth/cleaning technique, standards
- Underwater inspection - visual, by diver and ROV. inspection requirements, and planning. flooded member detection
- NDT - introduction
- Ultrasonics: Properties of sound waves: probe construction: systems A-scan , B-scan, C-scan, arrays and other data display/collection methods; defect sizing; weld inspection
- Eddy currents: principles of eddy current formation; interaction with material inhomogeneities; the impedance plane as a basis of understanding the possibilities of the method; effects of depth of penetration and frequency.
- Radiography: principles of x-ray production. gamma sources; use of both exposure variables; use of IQIs to size defects; safety
- Electrical methods: ACFM and APCD, resistance (ac and dc) measurements
- Magnetic particle inspection: production of high magnetic fields; use of particles, relative directions of field and flaw; demagnetisation
- Dye penetrant: principles of cleaning, dyes, developers and interpretation of passive stress wave production and detection
- Internals and external pipeline inspection.
Intended learning outcomes
On successful completion of this module the student will:
- Understand the basic physics behind the various NDT techniques.
- Be able to select appropriate techniques for an application.
- Understand the capabilities and limitations of each method.
- Be competent in assessing new techniques and the likelihood of their use.
- Understand the problems caused by working underwater and on pipelines.
