Sound Advice Newsletter

The Ultrasound Newsletter published by UE Systems, Inc.

Information… Product News… Advice… Dialog

Volume 8, Issue 3       May, 2007

T O P I C S

Leak Detection Is Hard Work

Ultraprobe Tip

–The Value of Sound
 Recording

Comments & Contributions

Sound Contest

Training Schedule


This newsletter is dedicated to you, the reader with the goal of improving your ultrasonic inspection skills and enhancing your value to your company or clients. As always, we welcome your participation. If you have questions or seek advice about your inspection techniques or programs, or if you wish to share your experiences with others, please e-mail your contributions to us at info@uesystems.com.

Leak Detection Is Hard Work

Whether you’re looking for a leak on a routine basis or you have to find a leak that just happened, leak detection is not easy. It takes planning, skill and even a bit of luck. Sometimes you just happen upon the leak. You scan around, hear it and there it is. Other times, it can take a long, long time. It is important to note that one technology isn’t applicable for every type of leak. You have to be aware of the type of leak you are looking for and the type of system in which leak is occurring. We all know how effective ultrasonic technology is when it comes to locating leaks. The problem is that many users, especially those who have no experience or training, often mistake their instrument for a magic wand. They assume that all they have to do is wave the “wand” around and they’ll locate the leak instantly. Knowledge, planning, experience, training and using the right tool for the job all come in to play when looking for a leak.

Knowledge:  If you understand how leaks form, what types of leak have a better chance of producing ultrasound and the various methods for leak detection, then you have a good probability of success.

Planning:  One common mistake is that an inspector starts to look for a leak without any planning. Planning is a very important element for success, whether the leak detection process is for a leak that must be found immediately or as part of a scheduled PdM check. The first step is to understand the type of leak as well as the system or component in which the leak may be. The next step is to review the leak system. Check blue prints or pipe layouts to get a better understanding of how and where leaks might occur. The next is to walk through the areas you will test to be sure the diagrams and prints match up. This is also a good opportunity to view what additional equipment you will need to bring such as keys to open locked cabinets, flashlights, ladders or any special modules or tools such as the flexible probes, Long Range Module, Close Focus Module or Liquid Leak Amplifier. This walk through will also help you plan your inspection route.

Experience:  The more you use your ultrasound instrument, the better you’ll get. It’s that simple. As you gain experience you will learn what techniques work in specific cases and what won’t work, you’ll have a better understanding of how to look for the leak, confirm the leak and extrapolate the potential savings of your test. You’ll develop shielding techniques and possibly short cuts that will take you directly to the leak. In essence you’ll be come more efficient and more effective.

Training:  To help you start off in the right direction and, even if you do have experience, to help you re-discover techniques and concepts that can help, training is always advisable. As you are probably aware, UE Systems has been offering training courses, some to help with certification, for over ten years. Our course curriculum has increased to provide courses that meet specific needs. To review all the courses offered, try this link: http://www.uesystems.com/training.asp

The Right Tool for the job:  Ever since our first Ultraprobe, we have been modifying the product and adding accessories to help meet specific inspection needs. There are always unique problems that inspectors encounter. Over the years we have developed a number of accessories based on recommendations from users. The Close Focus Module was created to met the need for locating vacuum leaks in vacuum bags used by the composite industry, the Ultrasonic Wave Form concentrator (Parabolic Dish) came about to help locate leaks at a distance. The Long Range Module (LRM) actually was designed by a scientist working for the National Aeronautics Space Administration: NASA to help locate leaks on the space shuttle. Our flexible probes were suggested as a way to help some inspectors locate leaks occurring at odd angles in difficult areas and the concept of Liquid Leak Amplifier came about to help locate low level leaks that were out of the normal detection range of standard ultrasonic equipment.

Ultraprobe Tip:
The Value of Sound Recording

Sound recording is an important component of ultrasound inspection. As users of the technology understand, being able to observe changes in intensity levels is only part of the advantage of inspection. Listening to the sounds produced by operating equipment, leaks and electrical emissions provides an added dimension that helps determine the location and criticality of a condition which can influence the action levels needed to either repair a problem or relegate the sound as irrelevant with no need for action.

With the addition of sound recording, inspectors have a new tool that can enhance their inspection programs. They can create a library of sounds to be used as both a reference and a training resource. A sound recording can be used to help new members of the maintenance inspection team learn to recognize “normal” operating sounds as well as typical “problem” sounds before they go out on a route. When there is a question as to whether a change in condition has occurred, a baseline sound can be played in the spectral analysis software and then compared with a new sound to determine if in fact any change has occurred. As an example, if a valve flow condition is important to a particular process, a typical “baseline” sound can be recorded along with the specific decibel data of the valve. The valve can be monitored on a routine basis using baseline parameters to be sure that all tests follow the same procedure. Should a change in amplitude occur a sound sample can be taken and compared with the baseline sound. If there is a correlation between the amplitude change (either up or down) with a sound quality change, the operators can make a decision as to when or if a repair is needed. The same can be true of any critical equipment be it a bearing, pump, motor, gearbox or transformer.

We have a series of sound samples that can be used as a learning tool to help you get started. They include sounds of bearings in typically “good” and failure stages, steam traps and electrical faults to name a few. If you would like to receive some of these sounds, let us know by email: info@uesystems.com , or call us: 800-223-1325 to learn more about sound sampling.


Comments and Contributions:

You may notice that the name of our newsletter is changing from Tech Tips to Sound Advice. The reason is quite simple. UE Systems has and will continue to offer “sound advice” to all our customers. UE prides itself in providing you with the most reliable means of achieving success in your inspection routines. This includes a number of quality components: our products (hardware and software), training, product support (over the phone from our highly knowledgeable in-house support group and in the field from our regional managers) from our information-filed web site and from our affiliated service providers; the Service Partners. As an extension of this concept, we will be offering “Sound Advice” with our email newsletter.

Sound Contest:
Every month we’re going to set up a new sound for you on our web site. All you have to do is read the clue and identify it. All successful entries will be placed in a monthly drawing for a prize. This month’s prize is a UE Watch.

Send us one of your sounds with a brief description. If we select it for use we’ll put your name up on the site to give you the recognition you deserve plus we’ll happily send you one of our famous UE shirts as a thank you. info@uesystems.com

Last Month’s winners: Congratulations to last month’s winners. You all had great sound recognition. The sound was listed as non-industrial and was recorded on an Ultraprobe 10,000. The clue was: “A flying mammal gets sound advice.” The answer: A bat’s sonar. While many of the contestants identified the bat, they did not specifically identify the sonar, which was the clicking sound we heard. However, there were many of you who did and for that reason there were 17 winners!

Winners that have entered their mailing address will receive a famous UE watch as their prize.


Training Schedules:

The schedule below lists our standard Level I and Level II airborne/structure borne ultrasound technology course plus the new 1-Day Software courses and the Steam Examiner course. Please be sure to register early for the course of your choice to be sure to save your place.

Level I and Level II
DATES CLASS LOCATION
May 7 -11 Level I Des Moines, IA
May 22 -23 Steam Examiner Ames, IA
May 28 - June 1 Level I Monterrey, Mexico
June 11 - 15 Level I Milwaukee, WI
July 9 - 13 Level I Singapore
July 16 - 20 Level I Seattle, WA
August 6 - 10 Level II Elmsford, NY
September 3 - 7 Level I Mexico DF, Mexico
September 10 - 14 Level I Houston, TX
October 15 - 19 Level I Louisville, KY
November 12 - 16 Level I Birmingham, AL
December 3 - 7 Level I Honolulu, HI
To register: email: info@uesystems.com
or register on-line: http://www.uesystems.com/forms.asp?frmID=10


1-Day Software Class Ultratrend DMS & UE Spectralyzer
DATES CLASS LOCATION
May 16 Software I Day Birmingham, AL
June 20 Software I Day Detroit MI
July 25 Software I Day Albany, NY
August 15 Software I Day Springfield, MA
September 19 Software I Day Philadelphia, PA
October 24 Software I Day St. Louis, MO
To register: email: info@uesystems.com
or register on-line: http://www.uesystems.com/forms.asp?frmID=21



More articles will be posted periodically. Please check back.
If you do not wish to continue to receive this newsletter, please let us know via email. Contact us at info@uesystems.com.

UE SYSTEMS, INC.
Toll Free: 1.800.223.1325
Phone: 914.592.1220
Fax: 914.347.2181
e-mail: info@uesystems.com


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