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Surface Preparation and Coatings Removal

Overview

Using ultra high pressure water jets to clean or prepare surfaces is known as “hydroblasting”.

This is the process in which ultra high pressure jets are used to remove paint, rust, bitumen, epoxies and other coatings from almost any surface. The process does not cause damage to the underlying facade or generate any heat or dust. Hydroblasting also creates a perfectly clean (free from chemicals and non-visual contamination) surface on which new coatings can be applied.

In many cases this offers a cheaper, safer and more cost-effective alternative to dry abrasive blast cleaning or mechanical surface preparation methods.



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The RGL “Limpet” Crawler is an innovative UHP remote control system offering surface preparation with built in vacuum recovery capability.

RGL’s Limpet Crawler system remotely delivers UHP water to remove coatings and corrosion under a ‘high’ vacuum seal. Here are some things you need-to-know about the system and how it works:

  • Remote controlled via ‘fly by wire’ umbilical line to ground based operator/control pedestal.
  • In-built vacuum blast head which enables the system to be self-propelled and crawl vertically to 30 metres.
  • Copes with rivets and lapped plates with 15-20m step.
  • High vacuum blast head also provides a controlled method of waste water, management of contaminants and removal of water.
  • Ultra high pressure water delivered via portable, diesel-driven units with working pressure up to 3000 bar.
  • Integrated vacuum head and waste filtration system.
  • Three person crew allocated per Limpet.
  • Winch system provides safety net in the event of vacuum failure. The system also deploys the Limpet to high levels quickly and safely.
  • In-house system that has been developed and refined over the past ten years.

Areas not suitable for the Limpet crawler system (e.g. brackets and vertical pipes) are manually cleaned/prepared via a handheld water jetting lance. However, this typically involves less than 0.5% of the total surface area.

For more information please see our ebrochure: Preparation & Protection for Steel Structures Brochure

 

Need a Coatings Removal & Surface Preparation quotation?

Briefing guide

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