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Author Archives: Charles Frenzel
Quality of Water for Use in High Pressure Pumps
For 30 years, I have received questions about the quality of water that should be used for removal of coatings. How much dissolved material or minerals gets left on the surface? Just recently after an hour long webinar to 200 people, the questions was “What shoul the quality of the water be?” Among the first …
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EVALUATION OF 20,000 PSI WATER JETTING FOR SURFACE PREPARATION OF STEEL PRIOR TO COATING OR RECOATING
EVALUATION OF 20,000 PSI WATER JETTING FOR SURFACE PREPARATION OF STEEL PRIOR TO COATING OR RECOATING 1983 Dr. Lydia M. Frenzel, Dr. Robert DeAngelis, Dr. John B. Bates The original monograph which started the SSPC, NACE, and ISO to use waterjetting (hydroblasting, aquablasting) for coatings removal and surface preparation. Click on the link to get …
Surface Preparation- Why surfaces with more surface area look darker.
Surface Appearance with Surface Area. Back in the early 80’s, Dr. Lydia Frenzel and myself took a series of water-jet processed steel panels and examined them with a scanning electron microscope. We were hoping to receive confirmation of what our computer models told us; that is, water jetting at or above a threshold pressure produced …
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Lead Based Paint on Bridges- Cost Effective Alternatives- FHWA
I get questions about relative cost for various surface preparation methods and the pros and cons. I refer people to this study as they can plug in their own numbers. “COST EFFECTIVE ALTERNATIVE METHODS FOR STEEL BRIDGE PAINT SYSTEM MAINTENANCE” CONTRACT NO. DTFH61-97-C-00026 was published by the FHWA with Corrpro in September 2001. The final …
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Cleaner Times Article on Dr. Frenzel by Kathy Danforth
“This article is reprinted with permission from CleanerTimes/IWA, a monthly trade journal serving the pressure cleaning and waterjetting industries. For more information please visit www.cleanertimes.com or www.waterjettingdirectory.com . Article by Kathy Danforth June 2011, p. 42, Cleaner Times Dr. Lydia Frenzel has been a significant force in the waterjetting industry since her early work in …
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Evaluation, Repair and Rehabilitation of Pipelines Conference & Exhibition
Call for paper- (http://www.clarion.org/ERRP/ERRP-2011/index.php) Evaluation, Repair and Rehabilitation of Pipelines Conference and Exhibition October 31-November 3, 2011 Houston Marriott West Loop, Houston, Texas, USA Papers are now invited for this international forum which will address key issues in oil and gas pipeline-rehabilitation. The conference program will be divided into the following broad areas of interest: …
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Common Safety Errors Found in Pressure Washing, Hydroblasting, or WaterJetting
Common Safety Errors Found in Pressure Washing, Hydroblasting, or WaterJetting Reviewed: 2011-05-17 by Lydia Frenzel The Advisory Council compiled a Special Report of errors, accidents, incorrect assembly practices and faulty work habits in 2002. Luis Ortega Trotter, who is now deceased, from AcquaBlast in Brazil provided the photos to the Advisory Council WaterJet Workshop on …
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Test Protocol for Corrosion Inhibitors or Cleaners for Flash Rust
A Test Method for Corrosion Inhibitors or Cleaners for Flash Rust has been posted on flashrust.org. Dr. Frenzel prepared this protocol from a Proprietary Inhibitor and Cleaner in a generic form. Specific concentrations should be changed to those of the inhibitor/cleaner under consideration. This document provides guidelines for testing Proprietary Inhibitor and Cleaner used according to …
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Astronomy Bug
We usually deal with water jetting and industrial news, but it’s worth noting that many of our members are nuts about space and astronomy. I’m one of those people who stood out under the stars during the coldest winter nights in northern Oklahoma and froze my eyelids to the frosty eyepiece while staring at Jupiter’s …