Subsea Expo

The voice of the UK subsea industry

Driving Subsea Environmental Innovation

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11 December 2014

A leading north-east UK subsea engineering firm has developed what it calls an environmental first for the UK subsea industry - re-usable subsea mats for the seabed which help to save money and protect the environment.

SETS said that the mats represent a significant cost saving to operators and environmental benefit because they eliminate the use of permanent concrete mattresses to land equipment on during subsea operations. They can also be used as a seabed working platform.

Chris Tierney, managing director, SETS, said: "We are paving the way for a new approach to subsea engineering. IRM and construction projects need to consider long-term environmental and project costs and leaving concrete constructions at the bottom of the sea can now be avoided in part. Subsea engineering has changed and we are at the forefront of maximising life of field workscopes.”

The new mats, which consist of an aluminium or stainless steel frame and a canvas covering, are manufactured by SETS’ sister company, PDL, based in Derry, Northern Ireland. The mats, weighting 47kg in air and 30kg in water, are placed and removed within minutes and do not harm the seabed or sea environment during use. Consisting of a 2 x 4m aluminium frame and canvas, each mat is capable of spreading a 10 tonne load.

They are easily stored and handled onboard a vessel and can be overboarded and in place subsea in a short space of time, saving operators time and money.