Project Scope

The Jasmine jacket represents a substantial offshore structure featuring four primary legs with five horizontal framing levels designed to accommodate twenty-four conductor slots. The platform’s dimensions range from 32.0m x 35.0m at the top elevation to 51.0m x 35.0m at the seabed level, requiring careful engineering of the support and installation systems throughout the construction and deployment phases.

Structural Configuration

• Four-legged primary structure with five horizontal framing plans
• Top dimensions of 32.0m x 35.0m at elevation +21.0m
• Base dimensions of 51.0m x 35.0m for seabed interface
• Design capacity for twenty-four conductor slots distributed across framing levels
• Foundation system utilizing nine driven piles grouted into structural sleeves

Construction Support Engineering

• Design of temporary and permanent supporting systems for yard construction operations
• Engineering of roll-up operations for efficient assembly of structural subassemblies
• Lifting analysis and installation procedures for top plan and conductor clusters
• Integration of construction sequence with fabrication yard capabilities and constraints

Load-Out and Transportation

• Design of specialized yard skidways for controlled jacket movement during load-out
• Engineering of barge skidway systems for safe transfer to transportation vessel
• Development of upper grillage configuration for load distribution during transit
• Ballasting calculations and procedures for maintaining stability throughout load-out operations

Engineering Approach

TECON’s engineering methodology focused on ensuring structural integrity and operational safety throughout all construction and installation phases. The approach integrated detailed structural analysis with practical construction constraints, developing solutions that optimized yard efficiency while maintaining the highest safety standards. Special attention was given to the interface between temporary construction supports and permanent structural elements, ensuring seamless transitions through each project phase.

The engineering team conducted comprehensive load analysis for all temporary works, considering dynamic effects during lifting operations and environmental loads during transportation. This thorough approach ensured that all systems maintained appropriate safety margins while enabling efficient construction sequences that met the project’s demanding schedule requirements.