Ship Hull Wet-Sandblasting

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PROBLEM

Removal of rust, paint and barnacles from ship hulls in dry dock.

 

SOLUTION

Use high pressure water blaster to clean and prepare vessels for repainting.

 

 

SPECIFICATIONS


Pressure....Varies up to 320 Kg/cm2 / 314 bar / 4550 psi
Flow .............................Varies up to 45 lpm / 11.8 US gpm
Temperature ...........................................................Ambient
Fluid.......................................................Water, rust inhibitor
Duty cycle...........................................................Intermittent
Drive...........................................................3 Cylinder diesel

 

BENEFITS

  • Portable for mobility.
  • Provides environmentally cleaner process than dry sandblasting.
  • Reduces manpower saving time and money.
  • Offers versatility from pressure cleaning to wet sandblasting.
  • Improves operation of ship saving time, fuel costs and prolongs life of ship.
  • Dependable low maintenance pump operation offers continuous 24 hour cleaning capability.

OPERATION

High  pressure water blasting is done above and below water.  It is a very controllable cleaning process.  The pressure and flow can be adjusted for any cleaning job from removing surface dirt to stripping chipped  paint  or barnacles.  High  pressure cleaning  is  a  flexible  cleaning system  also.  It  can  be  a  portable,  manual  system  with several  guns  to  accommodate hard-to-get-at  spots  or  a portable,  automatic  system  with  a  specially  designed oscillation  nozzle  arm  to  follow  the whole  contour  of  the ship’s hull.

 


A high pressure pump is part of a truck-mounted, diesel-powered manual system. The manual system was chosen because it can adapt to the varied cleaning jobs of this contractor who refurbishes small pleasure craft, as well as, larger commercial vessels. The pump delivers 45 lpm and 320 Kg/cm2 of water to remove the most stubborn attackers of these ship hulls. When paint is removed, a rust inhibitor is used to prevent further rust development until the vessel is repainted. It has been found that high pressure blasting is much more effective than the old by-hand method with brushes and scrapers in removing the rhizoid of weed spores or barnacles. The old cleaning methods didn’t get at the root of the problem and the growth quickly reappeared.  When the cleaning task is especially stubborn, this cleaning system can be quickly converted to a wet-sandblaster.

 
 
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