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overview, fixed offshore structure - Coggle Diagram
overview
geometrical classification
monopod/tripod
4 legged
6/8 legged
proprietary designs
tarpon
arup concept elevator
SeaHorse
Zeeoid
SIP 1
functional classification
Central Processing Platform (CPP)
wellhead platform
process platform
riser platform
living quarters (LQ)
flare support system/vent
fixed offshore structure
3 major parts
Topside
members
deck beams
vertical/horizontal braces
deck plates & grating
boom @ tower structures - venting/flaring purposes
helldeck structure
miscellaneous items
topside column
configuration
large & central processing
modular deck
integrated deck
small wellhead/non-wellhead
Jacket
components
jacket legs
foundation system
braces
turbular joints*
runners (launch/associated)
appurtenances
monopod/tripod - minimum facility
4-legged - satellite wellhead platform/single purpose plat
6/8 legged - CPP/integrated facilities (bigger)
vertical bearing configuration
K-brace
vertical diagonal brace
X-braced
Foundation
freestanding conductor & wellhead support structure (WSS)
less stiff structure --> connected to Mobile Offshore Production Unit (MOPU)
WSS able to stand by itself
MOPU may be decom - drydock for inspection/repair
criteria
In-Service Condition
100-years storm condition (>5-years service life)
50-years storm condition (<5-years service life)
30-years fatigue life/field service life *whichever lower
Damaged Condition
1-year operating condition
1-year fatigue life