Caisson (sump / pump caisson)
Company / operator legend practice (API 6A, API 521, API 537) / PIP PIC001
Drawn as
A long vertical tube hanging down from the deck through the sea surface (a wavy line), open at the bottom.
Meaning
Deck-hung caisson: seawater lift and firewater pump caissons, open drain and produced-water disposal caissons. Becomes caisson.
Variants
- Pump caissons show a vertical turbine or submersible pump inside
- Disposal caissons show the inlet near the top and an open end
Tags
CS · X