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AFT President & Founder | ASME Fellow - Trey founded AFT in 1993. He was the original developer of AFT Fathom (including the GSC and XTS modules), AFT Arrow and AFT Impulse. He was active in software development until 2011 and still works with the development team in addition to managing AFT. He has taught hundreds of training classes on AFT’s...

AFT President & Founder | ASME Fellow - Trey founded AFT in 1993. He was the original developer of AFT Fathom (including the GSC and XTS modules), AFT Arrow and AFT Impulse. He was active in software development until 2011 and still works with the development team in addition to managing AFT. He has taught hundreds of training classes on AFT’s software products in twelve countries across every populated continent. He worked previously for General Dynamics in cryogenic rocket design and Babcock & Wilcox in steam/water equipment design. He holds a BSME (1985) and MSME (1986), both from the University of California, Santa Barbara. He is a registered Professional Engineer.  

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Trey Walters

The United States Government Is Shut Down. Does Anyone Care?

Those living outside the USA may not know that our government has been shut down for about a month now. Those inside the USA may or may not have seen the effects and, for some of us, may be completely oblivious. For those who work for the US government, I am sure all of you know about the shut down very well as you have gotten an unscheduled vacati...
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Recent Comments
Guest — Lynn Conrad
Trey, no one is working without pay. Their pay checks have been delayed until the shutdown is over, but all government workers wi... Read More
Wednesday, 23 January 2019 17:53
Trey Walters
Hi Lynn: Sorry if I offended you or anyone else. I myself approved your comment here for public view on this blog. When I came th... Read More
Wednesday, 23 January 2019 21:14
Guest — Steve
What percentage of those workers affected by the shutdown are contractors, rather than government employees, and what is the likel... Read More
Thursday, 24 January 2019 13:39
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  3 Comments
Trey Walters

The Powerful Yet Frail Human Mind: Reality, Cognitive Biases, and Collective Hallucinations

Every once in awhile I read a book that really influences me. One such book is The Undoing Project by Michael Lewis (author of several other books that have been made into major Hollywood films – including The Blind Side and The Big Short). The Undoing Project discusses the insightful and innovative work of psychologists Daniel Kahneman and Am...
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Trey Walters

What Do the New AFT Impulse 7 and Bordeaux, France Have in Common?

I think this is the third monthly blog article I have written this year from an airplane over the Atlantic Ocean. Truly I do not save my monthly blogs for airplanes. I am really busy most all the time these days. Being on an international flight means having a long, forced time disconnected from the Internet and more free time than normal to write....
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Trey Walters

A Trillion Dollar Waterhammer Problem? Oh My!

An article published this month in the AWWA Opflow trade magazine relates that America has a trillion dollar problem with our municipal water distribution system due to pipe failures. This information is old news to the water industry. What is novel about this article is that it suggests the issue is largely caused by waterhammer (see Stop Costly W...
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Trey Walters

Turning Negative Experiences Into New Directions

Twenty-five years ago I did something I thought I would never do. My job at the time had become pretty bumpy and I was not happy. With hard work and good luck, I turned that negative experience into a new direction for me personally and professionally. That new direction involved starting a whole new company. On September 14, 1993. So, I have been ...
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Guest — Michael Shahrokhani
congratulations for 25th anniversary of your company and your fantastic products, I am not your customer but I have been following... Read More
Monday, 01 October 2018 09:12
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  1 Comment
Trey Walters

Did you know that New Jersey is a barrier in Spain?

It is true. New Jersey is a barrier in Spain. I saw it with my own eyes. Bear with me and I will explain.

When I travel internationally I find the people, cultural and language differences fascinating. Last month I was fascinated once again. My blog last month was written while on an airplane as I travelled to Europe (see my July blog When Pipe Stress Analysis Meets Waterhammer Hydraulics: New Waterhammer Guidelines for Engineers). Before going to the ASME PVP conference in Prague (check out this video one of our staff made) I stopped in Spain for 4 days. While there I was fortunate to visit the location of an AFT Impulse project by one of our customers that was a Platinum Pipe Award Winner this year. This case study was published in April. See AFT Impulse™ Matches Data For Pumping Station Check Valve Closure. That pump station photo in the case study is where I visited. Below is a photo of me and the PPA winner David Lozano Solé of AQUATEC – SUEZ Group. For those interested, this project is being presented as a technical paper by David at the 2018 Pressure Surges Conference in Bordeax, France in November. I will be there to help and also present two other papers of my own. So where does New Jersey come into this?

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Recent Comments
Nicholas Matthews
I grew up in Nebraska, far from the influences of Spain and from as far back as I can remember, we called those blocks "Jersey Bar... Read More
Thursday, 23 August 2018 17:17
Trey Walters
Wow, I have lived in California, Ohio and now Colorado and this is news to me! I am sure Pedro will be happy to here this!
Thursday, 23 August 2018 17:36
Guest — Javier Garrido
The aunt of my father introduced the "new jersey" protections for the roads in spain! At that moment he was the President of high... Read More
Thursday, 23 August 2018 19:27
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  4 Comments
Trey Walters

When Pipe Stress Analysis Meets Waterhammer Hydraulics: New Waterhammer Guidelines for Engineers

I am sitting on an airplane at this moment somewhere over the Atlantic Ocean and I am excited. Something that has been in the works for 22 years will happen next Monday, July 16 in Prague, Czech Republic. That is where the ASME PVP 2018 Conference will happen and I get to make a presentation.

Last year I helped AECOM, an AFT customer and AFT Impulse user, develop a set of pragmatic internal design documents for their project on handling radioactive fluid transport. Two of these documents provided their engineers guidance on interpreting and applying transient cavitation predictions. 

We proposed these two documents to the ASME PVP Division and they liked them enough to allow us to publish two new papers at their conference. I will be presenting these papers on behalf of AECOM and AFT.

But why I am so excited about this?
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Recent Comments
Guest — Colin D.
Is there anyway to get the complete papers? All I'm seeing are the Abstracts. Regards, Colin, DuPont Engineering... Read More
Tuesday, 24 July 2018 14:25
Trey Walters
Yes, the link in the blog now points to the full papers here: http://www.aft.com/technical-papers... Read More
Tuesday, 24 July 2018 14:47
  1380 Hits
  2 Comments
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