TV Coverage WaterJet Cutting and Cleaning- Jay Leno, History Channel, Learning Channel, National Geographics Channel

National Geographics, World’s Toughest Fixes “Cruise Ship Repair.”

Every so often, the industry gets “free” publicity via the television. There is an upcoming segment in December.

KMT Waterjet Systems has a Jay Leno connection. You can find clips on the web Look for Calypso Waterjet Cutter under “tools” in the videos.

Flow International was featured on the “American Chopper.” when a Flow special motor cycle was built and the Flow 6 axis cutting system was delivered. The double segment was aired on TLC on February 14 and 21st, 2007

NLB was featured on the History Channel- “Modern Marvels The Pump” in March, 2007. The camera crew photographed all day; about a minute got into the final cut. You can purchase this segment.

John Odwazny, of Chariot Robotics LLC, says that the National Geographic Channel is doing a segment on World’s Toughest Fixes featuring Cruise Ship Repairs.” They were in the Bahamas Shipyard to document the use of robotic ultrahigh pressure stripping on ship hull. Odwazny is not sure when it is to be aired or how much will be included. I just went to and they were having technical difficulties. I found the air time as Wednesday Dec 3 at 9:00 pm central time

Paint Removal

Seems like paint removal ought to be a simple concept, right? But how much paint do you remove to remove half of the paint? How do you sample an area to show that you left 75% of a coating?

Can you remove all of a top coating and leave all of the tightly adherent base coat? Are elastomeric coatings tightly adherent by abrasive blasting standards and easily removed by wet blasting?

The advantage of waste streams that contain only the original coating: Dams and tidal structures.

Paint removal that creates opportunity for corrosion. Brushing and scraping.


When is clean clean?

What is clean water?

What does profile really mean?

When is salt salt?

What are bulk properties versus surface properties?

These are just a few of the areas where terminology confuses standards languages.

Radioactive Contamination

Removal of Surface Radiation from Steel- Dry Blasting compared to Ultra-High Pressure Water

UHP WJ is routinely used to remove surface radiation from steel in nuclear plants.


John S. Oechsle Jr., who is now retired, worked with S.G. Pinney & Assoc. in Florida and prior to that in the 1950’s worked with Metalweld and DuPont in the nuclear industry.  IN 1999, he talked to me about what happened to the surface, removal of Corrosion, and surface radiation. The exterior surface of any metal starts to change as soon as it comes out of the mill.  The change is at the outer boundary and as you go into the material, you reach the bulk property region.

Metalweld and DuPont in the 1950’s showed that corrosion invades the surface by about 2.5 mils at the grain boundary. To remove all contamination by dry blasting, it required 5 consecutive blasts consuming 47.5 lb. of abrasive/ft.2 to remove enough steel to eliminate the surface corrosion contamination. NACE No. 1/ SSPC-SP 5 was the standard.

Ultrahigh-pressure water at 36000 to 55000 psi removed the surface contamination in one full pass. On a project in Japan, 28 tons of structural steel had been in immersion in a nuclear plant for 19 years. The steel was corroded and radioactive. The customer wanted to clean the steel to less than detectable radiation for removal from the site. All steel was ultrahigh-pressure blasted at 55000 psi. 27.5 tons were moved off site at less than detectable radiation so only one-half ton of steel was removed in total.