52 × fpso   12 × drilling   8 × hull
29 × valve   11 × relief   8 × dehydration
25 × riser   11 × corrosion   8 × material
18 × pump   10 × sour   8 × pipeline
16 × subsea   10 × tank   7 × simulation
16 × compressor   9 × control-valve   7 × methanol
13 × psv   9 × h2s   7 × tree
12 × flare   9 × offshore   7 × load
12 × heat-exchanger   8 × control-system   7 × fire
12 × pressure   8 × seal   7 × vessel
...