MEZGA Consulting Engineering | OFFSHORE STRUCTURES

Offshore Structures

Gas Gathering & Compression Platforms
Processing Platforms
Drilling Platforms
Jackets & Topsides (PILED)
Arctic Topside Structures (GRAVITY BASE)
FPSO Topside Structures (FLOATING)
Flare Towers & Vent Towers
Bridges (Personnel & Utilities)
Helidecks

Greenfield offshore jacket structure mezga consulting engineering r1

Greenfield ~ Consulting Engineering

Full Cycle Engineering: Providing consulting structural engineering services for all phases of your new build offshore project.

Phases:

Concept
Preliminary Estimates
FEED (Front End Engineering Design)
Detail Design
Fabrication
Transportation
Installation

Offshore installation topsides mezga consulting engineering

Marine ~ Structural Engineering

Jackets / Topsides / Modules: Pre-Service structural engineering for the marine phases of offshore structures from Loadout at quayside, transportation by marine vessels and installation at site location.

Phases:

Loadout Analysis
Transportation Analysis
Installation Analysis (Lift & Float over)

Appurtenances:

Sea Fastening
Load Spreaders / Grillage
Installation Aids

Brownfield offshore structure mezga consulting engineering r3

Brownfield ~ Structural Engineering

Operational & Decommissioning: Consulting structural engineering services for existing offshore facilities during operations, expansion, and decommissioning phases.

Phases:

Operation & Maintenance
Facility Upgrades & Expansion
Facility Decommissioning

Global Structural Analysis

Global structural analyses are for the design of the primary structural framing and consist of Pre-Service and In-Service framing configurations and load scenarios.

Sacs primary steel structure model lift model jacket

Pre-Service Global Analysis

Pre-Service structural engineering analyses account for the varied support conditions, framing configurations, and environmental loadings that occur before platform integration at the final offshore site location. Pre-Service analyses govern a considerable portion of the structural framing over In-Service analyses.

Pre-Service Analyses:

Fabrication (Staged) Analyses
Loadout Analyses (Skidded & Trailered)
Lift Analysis
Transportation Analysis
On-Bottom Stability Analysis

In-Service Global Analysis

In-Service structural engineering analyses are performed on the fully integrated platform at the offshore site location. This includes gravity loads, the offshore loadings of wind, wave and current and (where applicable) seismic loadings.

In-Service Analyses:

In-Place Operating
In-Place Storm
Seismic
Fatigue

Local Structural Analysis

Local structural analyses are the remaining 'detailing' items such as connections, secondary steel, tertiary steel, and outfitting.

Local structural engineering finishes out the design details (Pre-Service / In-Service) and also provide the 'everyday' functionality to the facility. This includes incorporating human factors engineering guidelines as a best practice.

Typical Local Analyses:

Framing Connections
Deck Beams
Deck Plating & Grating
Access Platforms, Stairs, and Ladders
Fire / Blast Walls
Padeyes & Lifing Lugs
Lift Rigging (Preliminary Sizing & Selection)
Boat Landings
Barge Bumpers
Risers, Riser Clamps & Guards
Anodes
Mudmats
Pile Design
Pipe Racks & Pipe Supports
Equipment Supports
Electrical Supports
VIV (Vortex Induced Vibration)

Industry Codes & Standards

Work performed to project prescribed specifications, and industry codes and standards.

Codes & Standards

Project specifications are reviewed and standards adhered to unless specification deviation is requested and approved. The following are typical offshore codes & standards utilized.

API RP2A: Design of Offshore Platforms
API RP 2MET: Metocean Design and Operating Conditions
ISO 19901-3: Offshore Topside Structures
ISO 19902-7: Fixed Steel Offshore Structures
ISO 19906: Arctic Offshore Structures
AISC 360: Structural Steel Buildings
CSA S16: Design of Steel Structures