Surface Preparation

The use of High Pressure Water Jetting for the surface preparation of steel surfaces is now accepted in the marine, oil and gas, and petrochemical sectors. In conjunction with surface tolerant primers which are now available from all major paint manufacturers water jetting has proven advantages over conventional grit blasting. Apart from the obvious factors of less mess and the problems caused by grit contamination of sensitive equipment, water jetting effectively removes salts from steel surfaces and does not cause inclusions of corrosion.

During the last decade, Dyna - Jet has used High Pressure Water Jetting to prepare steel surfaces on several million square metres of steel in tanks, decks, pipework and structures. As part of a joint-venture with Jurong Shipyard the company worked on up to 50 ships a year, and has undertaken work for many major clients: Mobil, Chevron, BP, JO Tankers, Shell, Tanker Pacific, Stolt Nielsen, Vela, National Iranian Oil Company, Maersk, NedLloyd, Clough and many others.

The National Association of Corrosion Engineers (NACE), the Steel Structures Painting Council (SSPC) have accepted High Pressure Water Jetting as a valid surface preparation technique and issued standards for its use.