Tech Tips Newsletter

UE SOUND BITES . . . The Ultrasound Newsletter published by UE Systems, Inc.

Information… Product News… Advice… Dialog

Volume 7, Issue 2       February, 2006

T O P I C S

Do a Walk Around

Ultraprobe Tip

Comments & Contributions

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.

Do a Walk-Around

Performing a walk-around prior to testing can be extremely useful. There’s a lot that can be accomplished with this simple procedure that can save time and prevent injury. What can be accomplished during a walk-around? This is a question we ask our Level I students during the course and we get some great answers. Here is a sample of their responses.

Safety Issues: A walk-around can help identify potential hazards. Typically when out in the plant, an inspector will be wearing hardhat and safety glasses and will be focused on the test items along the route. Failure to note objects that can be the cause of tripping, bumping or slipping can result in injury. In addition, there might be other hazardous conditions such as exposure to toxic chemicals, electrical hazards or a potential for burns that an inspector can note before entering the test area on the day of the test.

Note obvious failure conditions: During the walk-around there are opportunities to identify obvious anomalies such as gross leakage, discoloration indicating corrosion or a bearing in a catastrophic failure condition. These can be noted and scheduled for repair in advance of the inspection if warranted.

Plan the inspection logic: By objectively observing the test area during the walk-around the logic of the test progression can be noted. Where will you begin, how will you follow your route without interfering with production, where will you finish up? Sometimes routes are set up to follow a numerical sequence such as “pump 1, pump 2”, but there might be instances in which pump 1 is not physically followed by pump 2. It is possible that pump 20 is right next to pump 1. The walk-around will allow you to adjust your test route sequencing to accommodate this logical progression.

Another part of the inspection logic includes the optimum time to perform the test. During the walk-around a brief interview with operators and with the supervisor in charge of the test area can help you identify the optimum time for inspection. Is it when all equipment is in use or during an off-time?

Note if test marks are present: If your inspection is to be something that is to be repeated routinely, it is important to minimize variables to note deviations. One simple approach is to be sure that test points are marked for test reliability/repeatability. If test marks are not present, be sure to set them. If the survey is mechanical, test points can be marked with such items as epoxy bonding a washer to the point, spot drilling, denting (carefully) the test point or marking the test point with an indelible magic marker. If it is a leak survey, and therefore not possible to note a leak you don’t know exists, set up a tagging method in advance.

What You need to bring during the test: As you walk around the test area, you will have the opportunity to note what equipment you will need to bring along with you in addition to your test materials. This might be a flashlight for poorly lit areas, keys to open locked cabinets or doors, a ladder or lift for elevated test areas.

Now it's your turn. We've listed a few suggestions here, what do you suggest can be accomplished with a walk-around? We’d like to hear from you. We'll publish your responses in up-coming issues. In addition, we'll happily send you a famous UE hat for your contribution.

Ultraprobe Tip:
Due to sonic deflection in which a leak sound can bounce off a solid object giving an inspector a false indication as to the location of a leak, it is important to use a confirming method. The confirming method will assure the inspector that the leak site is the actual site. To confirm there are a few standard procedures: 1. Scan around the area in all directions (up, down, around the back and around the front of the site. The leak site should be louder than when the probe is moved in any other direction. 2. Seal the suspected leak site with the tip of the rubber-focusing probe. If the leak is present, you will continue to hear it; if the leak is not there, the sound will drop off. 3. Use a bubble solution. If the leak is there, (assuming it is a moderate to large leak), you'll see the bubbles form. 4. Try a clip board or pad. Move the scanner close to the suspected leak site and then move the pad in back of the site, angle it up and down. If the sound is due to sonic deflection, the sound level will drop as you move the pad. If the sound stays steady, that’s the leak site.


Comments and Contributions:

We often receive calls with questions related to the technology and procedures for various applications. One of the best vehicles for getting good, solid “how-to” tips is from your peers. Our web site has a new feature that you are invited to use. We have a bulletin board in our "Community" section. Here you have an opportunity to share your thoughts, ask questions or contact Level I alumni and inspectors in the ultrasound community. You will have to register first. So try this now: Go to www.uesystems.com/forum and log in.

Another way to get some interesting ideas about how the technology is being used is to review the proceedings from the last Ultrasound World conference. Ultrasound World II proceedings are available in a CD and can be requested either on our web site: http://www.uesystems.com/forms.asp?frmID=11 or directly by calling us at 800-223-1325.


Training Schedule:

This year has started off with an unbelievable response for our training classes. In addition to our standard, highly regarded Level I and Level II classes, we have instituted two new courses: Steam Examiner and an in-plant 2-day Technology Implementation course. All courses are receiving inquiries and reservations. We strongly suggest that you register early to assure your place in the course of your choice.

DATES CLASS LOCATION
April 3 - 7 Level I Nashville, TN
April 11 - 12 Steam Examiner Cedar Rapids, IA
May 2 - 3 Steam Examiner Edmonton, Canada
May 8 -12 Level I Charlotte, NC
June 12 - 16 Level I Portland, OR
June 12 - 16 Level II Elmsford, NY
July 17 - 21 Level I Milwaukee, WI
August 7 - 12 Level I Rochester, NY
September 11 - 15 Level I San Jose, CA
September 11 - 15 Level I Toronto, Canada
October 16 - 20 Level I Kansas City, MO
November 13 - 17 Level I Phoenix, AZ
November 13 - 17 Level I UK
December 4 - 8 Level I Birmingham, AL
To register: email: info@uesystems.com
or register on-line: http://www.uesystems.com/forms.asp?frmID=10



More articles will be posted periodically. Please check back.
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e-mail: info@uesystems.com


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