Tekmar Group - News and Events

Flare Stack Reinforcement from Design to Installation in 21 Days
26th November 2009

The purpose of the project was to urgently reinforce the annular cavity in three subsea flare stacks before the stacks became unstable.

Tekmar Subsea were commissioned to design and manufacture all equipment on a 21 day schedule. Our service engineers then successfully installed the equipment of the coast of Egypt.

This was the first ROV performed flare stack reinforcement project completed in the region. The ROV was initially fitted with 1-off clamp and the subsea drilling machine. After latching onto the flare stack subsea a 2" diameter hole was remotely drilled. The ROV disengaged from the clamp leaving the system on the pipe and returned to surface for another clamp. This procedure was repeated until three clamps were installed and holes drilled on each each flare stack.

The subsea drilling machine was then removed from the ROV interface shelf and the grouting stabs fitted. This allowed the ROV to reattach to the installed clamps. Grout was then pumped into the annular cavity from the topside spread. Following completion of the grouting operation an isolation was activated and the ROV recovered.

Client benefits provided by solution

Long term reinforcement of severely corroded flare stacks ROV remote installation.

Project Responsibilities