Decommissioning and abandonment

48

Decommissioning and abandonment

C 3 C 4 C 5 C 6 C 6 C 6

H 8

Propane

H 10 H 12

Butane or isobutane Pentane or isopentane

H 5 H 6

CH 3

Toluene Benzene n-Hexane

H 14

H 8

Naphthalene

C 10 CA

Corrosion allowance

CAA CAD CAE

Civil Aeronautical Administration Computer-aided design Computer-aided engineering Catenary anchor leg mooring

CALM CAPEX

Capital expenditure (construction and installation costs) Cranfield automated pipe-welding system

CAPS CATS CBM CBR CCTV

Central Area Transmission System Conventional buoy mooring

Catenary bundle riser Closed circuit television

CD

Chart datum (often defined at LAT)

CDM

Construction design and management regulations (UK implementation of European Directive)

CDR CDST CDTM CDUs CDT

Composite drilling riser Controlled-depth surface tow Controlled-depth tow Controlled-depth tow method Crude oil distillation units Computational fluid dynamics Concrete gravity based

CFD CGB CH 4 CHP CHS CIPS

Methane

Combined heating and power

Circular hollow section (structural steel tubing)

Close interval potential survey Closed-in tubing head pressure Concentric leg hybrid riser Central nervous system Central North Sea Chlorine

CITHP

Cl 2

CLHR

CNS

CNOOC

China National Offshore Oil Corporation

CO

Carbon monoxide

COOEC

China Offshore Oil Engineering Corporation

CO 2 CoB CoG

Carbon dioxide

Centre of buoyancy Centre of gravity

COMAH

Control of major accident hazards Concentric offset riser (see CLHR)

COR

CP

Cathodic protection Code of practice

Centipoise (1 cP = 1 x 10 -3 Pa·s) Central processing facility

cP

CPF