Denholm Zholdas offers a range of solutions to suit any tank or vessel cleaning application. Workscopes undertaken include:

• General Cleaning of Vessels and Separators
• Tank Pit Cleaning
• Tube Bundle Cleaning (Internal & External)
• Desludging and Sludge Treatment
• Inspection
• Refurbishing the Internals of Storage Tanks
• LSA Decontamination
• Surface Preparation and Coating of Tanks
• Cold Cutting

Wherever possible Denholm Zholdas avoid people entering tanks and vessels and have a range of specialist water jetting tools to allow them to clean tanks and vessels remotely, invariably using such equipment is quicker as well as reducing the health and saftey risks.

Where it is necessary for people to enter tanks and vessels Denholm Zholdas will undertake this with operatives who are fully trained and fully equipped with the latest breathing apparatus and other equipment for safe tank entry.

When cleaning crude oil tanks, a large amount of oil and oily sludge is often recovered. Removal of the sludge is completed using our Hydrodozer system, an intrinsically safe, hydraulically operated bulldozer system which can dramatically reduce the time required to clear the sludge from the bottom of the tank. The Hydrodozer can be operated either manually or by remote control and can be dismantled to fit through a standard 18" manhole. Denholm Zholdas offer the option of on-site sludge treatment. A mobile centrifugal separator system is used to split the recovered sludge into dry sand, oil and water. The oil can be re-injected into the production process, the sand and water can be disposed of via the normal waste and effluent systems.