Advisory Council

The objective of this project was to perform a survey of U.S. shipyards and similar industries to determine what technologies are currently being implemented or planned to prevent or reduce air emissions and wastewater discharges from facility operations.

There are numerous reports available, summarizing and comparing various “clean technologies”, which have potential application in the shipyard environment.

Biological treatment capabilities include activated sludge, nitrification and denitrification, anaerobic and aerobic digestion, and wetlands.

Internet Address: http://terrassa.pnl.gov:2080 Pacific Northwest National Laboratory works in all phases of the technology development cycle from Research and Development to industrial implementation.

They are studying carbon dioxide (CO2) pellet blasting, FLASHJETTM coating removal, laser paint stripping, plastic media blasting, sodium bicarbonate wet stripping, water blasting and wheat starch blasting.

The final product contains approximately 20% alumina (attributes to the abrasives hardness of 6-7 Mohs) and 54% silica (provides fracture characteristics) and other components including calcia and soda.

Carbon dioxide pellet blasting is a paint removal and/or cleaning technology that turns liquid carbon dioxide into pellets and blasts them through a nozzle or centrifugally towards the surface being cleaned.

As the dry ice pellets strike the surface, they induce an extreme temperature difference between the coating and the underlying substrate, weakening the chemical and physical bonds between the surface materials and the substrate.

– difficult to focus and control laser beam to allow stripping of curved or complex parts [1] – coating removal efficiency is affected by coating color and gloss [1] – requires use of Class 1 laser enclosure to ensure worker protection [1] – see the contact points in the the Bibliography cooresponding to the references below for more information [1] U.S. EPA.

Plastic media blasting (PMB) is a dry stripping process that projects plastic media at a surface through either low-pressure air (10 to 60 psi) or centrifugal wheels.

This month, we will focus on the positive characteristics of the nine personality types from the Enneagram. Individuals react to their inner obsessions and accept them as a truth governing personal behavior.

Understanding personality can help you smooth over problems and make sales.

Recently I missed the mark badly when 1 was lecturing on “Coatings Removal and discovered that the jetters I was addressing; had only experienced scarifying concrete with blast pots or waterjetting.

With this new equipment, the company can now clean concrete, take grime off of asphalt, take tile off floors, and remove rust from tube bundles.

Many industrial cleaning companies complete projects all year long that DON’T involve repainting.

· take paint and rust off steel where it will be repainted.

Have we established a pressure waterjetting (UH P WJ) or wet measurement from top of the peak to the bottom of the valley in steel surfaces or provided a “clean” mortar-pebble surface in concrete?

In any project, all three of these components are addressed whether you are using low pressure water cleaning (LP WC) or ultra-high abrasive blasting (WAB).

As the paint and rust were removed, it was obvious that the original hot-roll mill scale was present.

It revealed the profile under the paint and rust.