3.4u Day 1 Homework Flashcards
A vertical steel pipe carrying crude oil away from a production platform is called?
An Export Riser
A Gas bubble trapped in the molten metal can cause what type of defect in a steel plate?
A Lamination
Which of the following may cause metal fatigue?
Cyclic loading and unloading
A small conical depression in a concrete surface is known as?
A Popout
Since 2005 how often must a ‘Safety Case’ be reviewed?
At Least every 5 years
Who is responsible for ensuring sufficient inspection is carried out on an offshore structure under UK legislation?
Duty Holder
What aspects of QA are encompassed into an Activity Monitoring System?
Full certification for component locations through as-built drawings
Full material certification
Non-destructive testing (NDT) and inspection certification
Personnel qualifications
What prevents the steel reinforcement in a concrete structure from corroding?
Passivation - pH12.5
List 6 major items that are inspected regularly on offshore FPS’s and FPSO’s?
Moorings and Risers
Mooring Chains
Visual Hull Surveys (ROV)
Turret Inspection
Mid Water-arch
Lazy S configuration
What are the 6 categories of steel structure deterioration?
Gross structural damage.
Corrosion and erosion.
Fouling defects.
Coating defects
Scour
Metal and weld defects.
List the 8 Category ‘A’ defects appearing in the UK Government’s Offshore Technology Report
The category A (defects) are:
Cracks.
Impact Damage.
Popouts.
Delamination.
Variables Cover.
Exposed Reinforcement.
Tearing.
Poor Repairs.