GVA7500 Semi-Submersible

DP3 Deep Water Drilling Unit for Moderate Environment

Customers: GVA Consultants

Owner: Petroserv SA

Shipyard: Daewoo Shipbuilding & Marine Engineering Co

Main dimensions:

LOA116.6 m
Beam over all	96.7 m
Beam outside pontoons	78.1 m
Height, baseline to upper deck	45.0 m
Length of pontoons	108.8 m
Draught, operating	23.0 m
Air gap operation / survival	13.5 / 17.5 m
Capacities	Variable deck load capacity in excess of 8500 metric tonnes.
Accommodation	152 persons (Temporary 174)
Electric power system with 8 x diesel generators	5000 kW each
Propulsion power with 8 x thrusters	3800 kW each
Regulatory requirements	DNV Offshore Codes, IMO DP class 3

Commission:

Subcontracted personnel to GVA-C for participation in the following scope of work under GVA-C management for the GVA7500 semi-submersible drilling unit:

Basic engineering arrangements, calculations, system PIDs, system descriptions, conceptual routings and preliminary weight estimations for machinery, ventilation and HVAC.
El. equipment arrangements, load analysis, system descriptions, block diagrams and single line diagrams for electric and instrumentation.