Transco had a problem with one of their gasholders in the North of England, which was currently out of service due to a failure in the water seal. The brickwork that held the water seal in place had become porous just under the coping stone and two brick levels down. Transco was concerned about the impact to the environment should a leak occur.
Visit the Specialist Coatings (GB) Ltd website for more information on Transco: Tank Lining