Back to Case StudiesDecommissioning
Koscon & Mooring Chain -- Indian Ocean
Indian OceanC1-24 Chopsaw500-850m
10 min
Chain Cut Time
40-50 min
Koscon Cut Time
13 over 40+ cuts
Total Blades
Project Overview
In September 2023, Decom Engineering was engaged by Technip for a comprehensive cutting operation in the Indian Ocean targeting flexi risers, mooring chains, and Koscons at 500-850m depth. The C1-24 was crane deployed and powered via WROV. Mooring chain cuts were completed in just 10 minutes (vs. 40-60 minutes with a super grinder), while Koscon cuts took 40-50 minutes (vs. 90 minutes for DWS methods).
Key Highlights
- Mooring chain cuts 4-6x faster than super grinder methods
- Koscon cuts completed in half the time of DWS alternatives
- Independent clamping system for safe 20-degree angled cuts
Project Gallery







