waterjetting – Page 2 – Advisory Council

Microscopic Analysis of Steel after Waterjet Cleaning

In the late 1990’s, I received a report from Materials Evaluation Laboratory. The report is copyrighted. The pump company had cleaned UHP WJ on panels supplied by a major oil company. Materials Evaluation Laboratory analyzed the substrate with microscopy and metallurgy compared to abrasive blasting. This was at the time that UHP WJ was scarce and people were wondering what was happening at the surface. Would the surface be stressed?

Their conclusions:

1. Pressurized water effectively removed rust and other corrosion products from metal surfaces. This was done
with minimal disturbance of microstructural features.
2. Methods using abrasive particles were necessary for the removal of adherent mill scale. Those techniques cause
severe distortion of the metal surface.
3. The pressurized water method was considered the best preparatory cleaning for non-destructive inspection.
It offered a more “authentic” representation of the surface than the other methods evaluated.

This material is copyrighted. Please acknowledge the source. The Advisory Council can use it for educational purposes. It is not considered an endorsement nor recommendation.

Materials Evaluation Lab effect on surface 1991

Materials Evaluation Lab effect on surface 1991 Page 1 sanatized

Lydia Frenzel – A Life Devoted to Excellence

Cleaner Times writer Adia Walker wrote an extensive feature on Lydia and Charles Frenzel upon the occasion of Lydia being presented the SSPC John D. Keane Award at their 2015 convention. Cleaner Times has a long history of writing for the service companies with safety and business hints as well as technical articles on pressure washing, and high pressure waterjet cleaning. http://www.cleanertimes.com/

Lydia Frenzel, A Life Devoted to Excellence, includes the philosophy of Lydia and Charles Frenzel (writing as L.C. Frenzel) as they have developed an influence network, the Advisory Council, to build a greener industry- and a principle of actions reflecting our values.

for the article, upload this link

2015-04 Lydia Frenzel-ward opt

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 comments which I received on the WJ standards documents came from Singapore: The complaint was that we didn’t advocate cleaning with brackish or filtered seawater.” Just recently in 2015, a Sherwin Williams representative talked about the methodology in Brazil where WJ was being used for primary surface preparation, and not just potable water. However, I also received call in the mid 190’s where contractors said that they could tell the difference of quality of water between municipality sources. The better the quality of water, the better the removal, and the less flash rust.

As a task group leader for NACE and SSPC, the task groups finally defined surface preparation water. Surface Preparation water is water of sufficient purity and quality that it does not prevent the surface being cleaned from achieving the WJ-1 degree of surface cleanliness or nonvisible contaminant criteria when contained in the procurement documents. SP water should not contain sediments or other impurities that are destructive to the proper functioning of the cleaning equipment.

The following is a monograph on

The Quality of Water to be used in Surface Preparation and to Protect the Pumps.

Quality of Water 2015-12-14

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 the download.

frenzel deangelis bates 1983 White Paper

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 product was a series of reports- found on the Advisory Council downloads page and an excel sheet so that contractors, specifiers, and owners could plug in their own numbers.

A cost model for bridge painting maintenance was developed to aid specifiers in
evaluating the costs associated with currently available painting technologies. A myriad
of design approaches, surface preparations, and coating systems are currently available to
engineers tasked with maintaining painted bridges. This cost model allows quick and
easy comparisons between many of the current options for steel bridge painting. The
information used for the model is based on actual field observations1 and current industry
practices. This “User’s Guide” describes the model’s primary components and features
and the basic operation of the cost model.

The following are two powerpoint presentations given on this project by Corrpro. The reports are found on Advisory Council Downloads page which is in the upper left as I appear to have two different pages entitled “downloads”.

corrpro_TNRCC FHWA LBP July-2002

97C26 overview presentation Corrpro FHWA LBP Bridges Costs

The Only Pipeline Integrity Congress Focused Specifically on Crude: Houston 19-Nov-2014

This year’s inaugural Crude Pipeline Asset Integrity Congress is the only event designed specifically for crude oil pipelines.

With the continual emergence of new shale plays across the US, crude production has continued to soar and crude takeaway capacity with it. Tens of thousands of miles of crude pipelines now traverse the United States and Canada and as pipeline infrastructure continues to expand at this rapid pace, it has become absolutely imperative for pipeline operators to maintain the highest level of integrity in these pipelines to maintain flow rates, avoid hazardous leaks and expensive repairs.

Crude pipelines and facilities require specific tools and considerations for maintenance. In order to deliver operators with the most comprehensive understanding of the latest, most effective integrity management tools relevant to their operations, solutions designed specifically for crude pipelines need to be presented.

“This is the only conference focused specifically on crude oil pipelines and 100% focused on the pipeline operator’s experience. We’ve put together a select group of pipeline operators and academics to deliver practical case studies on optimizing the main pipeline integrity plan. This is really a very valuable opportunity for operators to learn from each other and apply that knowledge to their day to day work.” Says Diana Franco, Conference Director.

Kinder Morgan, BP, ExxonMobil, Centurion Pipeline, Buckeye Partners and more are also confirmed to speak at the conference on 19-20 November in Houston.

For more information, please visit the event website here:

http://www.crude-pipeline-asset-integrity-2014.com/