The Additional Living Quarter platform for North Field Bravo represents a significant enhancement to offshore accommodation infrastructure in Qatar’s North Field. Commissioned by QATARGAS and contracted through Rosetti Marino, this project addresses the growing need for improved living standards and increased capacity for offshore personnel working in one of the world’s largest natural gas fields.

The North Field Bravo platform required additional accommodation to support expanding operations while maintaining the highest offshore safety and comfort standards. The challenge was to design a fully integrated living quarter that could accommodate 90 personnel while connecting seamlessly to the existing infrastructure through multiple linking bridges, all within the constraints of an active offshore facility.

Project Scope

The Additional Living Quarter platform is a comprehensive offshore structure designed to provide world-class accommodation facilities while integrating with existing infrastructure. The project encompasses structural design, foundation engineering, topside facilities, and brownfield modifications to enhance the existing platform capabilities.

Structural Components

• Jacket Structure: A robust 750-ton dry weight jacket fixed to the seabed through driven piles in the main four legs, designed for minimum water depth of 53 meters
• Foundation System: 300 tons of foundation piles providing stable support in challenging marine soil conditions
• Topside Structures: 2,500 tons of topside dry weight including six deck floors optimized for accommodation layout
• Supporting Infrastructure: Helideck for personnel transfer, pedestal crane for logistics, and three laydown areas for operations support
• Integration Bridges: Six linking bridges connecting the new ALQ to the existing Living Quarter platform

Accommodation Facilities

• 90-person capacity with modern offshore living standards
• Six-deck configuration with optimized space utilization
• Enhanced galley and mess room facilities through brownfield modifications
• Recreation and welfare amenities meeting international offshore regulations

Installation Design

• Topside structure designed to stab directly into jacket pile tops below the cellar deck
• Comprehensive lifting and installation procedures for offshore construction
• Structural framings developed specifically to optimize accommodation layout requirements

Engineering Approach

TECON’s engineering methodology encompassed detailed structural design across all project phases, from in-service operations through construction and installation. The design process incorporated advanced structural analysis to ensure compliance with offshore standards while optimizing weight and material efficiency. Special attention was given to the integration challenges, requiring precise engineering of the connection points between the new and existing structures.

The structural design addressed multiple load cases including environmental loads from wind, waves, and currents, as well as operational loads during normal service. Material specifications and construction procedures were developed to ensure quality and safety throughout fabrication and installation. The brownfield modification aspect required careful planning to minimize disruption to ongoing platform operations while implementing improvements to the existing galley and mess facilities.