A-Frame Removal from Offshore Substation - Case Study

ARB Wind successfully engineered and delivered the safe dismantling and removal of a redundant cable pull-in A-Frame from an offshore substation, overcoming multiple access and lifting challenges — with zero incidents and no structural damage.

Overview

The project required the removal and disposal of a cable pull-in A-Frame from two offshore substations (OSS). ARB Wind was engaged to engineer a bespoke solution, supply all equipment and provide offshore personnel to execute the dismantling and removal works in a controlled and efficient manner.

Key Challenges

The project presented several operational constraints:

• Restricted access: Limited space around the A-Frame and platform boundaries.

• Height limitations: Overhead structures restricted conventional lifting methods.

• Offshore environment: Live Substation, Weather and logistics added complexity to planning and execution.

Solution

ARB Wind’s engineering and operations teams along with local access solutions supplier i-Scaff developed a custom removal methodology tailored to the site’s constraints.

Our approach included:

Designing a lightweight, modular rigging and lifting system built within a scaffold structure

Sequencing dismantling in controlled stages to maintain stability

Conducting comprehensive risk assessments and safety reviews

Deploying experienced offshore technicians for all hands-on activities

Every phase was monitored under ARB Wind’s integrated safety management system, ensuring compliance with offshore safety regulations and client HSE standards.

Results & Achievements

✅ A-Frame safely dismantled and removed without incident

✅ No damage to the substation or live equipment

✅ All lifting operations executed safely within restrictions

✅ A-Frame demobilised to shore for environmentally responsible recycling

✅ Completed on schedule, reinforcing ARB Winds reputation for safe, efficient offshore work

Outcome

This project highlights ARB Wind’s engineering adaptability and commitment to safety-first delivery in complex offshore environments.

Our integrated design-to-execution model ensures each project is delivered efficiently, with minimal risk and maximum control — even in the most restricted offshore conditions.