NDT News

How Low Temperatures Impact Dye Penetrant Testing

In this article, we look at how lower inspection temperatures affect the performance of dye penetrant testing cleaners, penetrant and developers

The operating temperature range for penetrant inspection as specified in ASTM E1417 Standard Practice for Liquid Penetrant Testing is 40°F to 125°F (4°C to 52°C), but how is the penetrant inspection affected at temperatures below 40°F (4°C) and can the inspection process be adjusted to achieve acceptable results?

To answer these questions, we evaluated SKC-S cleaner/remover, SKL-SP2 solvent removable dye penetrant and SKD-S2 non-aqueous developer at a range of temperatures in order to figure out what NDT inspectors can expect when using these, or similar quality dye penetrant products when inspecting at lower temperatures

Cleaning at lower temperatures

At lower temperatures in the range of 32°F – 50°F (0°C – 10°C), the solvent cleaner will take longer to dry.

We used 75°F (24°C) as our ambient, standard operating temperature, and observed how decreasing temperatures impacted how quickly the solvent cleaner dried. Below are our suggested drying time for solvent-based cleaner/removers at lower temperatures.
 

TemperatureCleaner Drying Time
75°F / 24°C Standard
50°F / 10°C 2 x Standard
40°F / 4°C 3 x Standard
32°F / 0°C 4 x Standard

It is critical to make sure the solvent has evaporated during the precleaning step either by wiping with a clean, lint free cloth or using air dryers to ensure a clean and dry part prior to penetrant application. Unevaporated cleaner remaining in indications can impede penetrant entry into the surface breaking indications.

Dwelling at lower temperatures

Penetration time should also be extended since the viscosity of penetrant increases with decreasing temperatures, which slows down penetration and can significantly impact the test results.
 

TemperatureDwell Time
75°F / 24°C Standard
45°F / 7°C 2 x Standard
32°F / 0°C 2.5 x Standard

Developer at lower temperatures

Developer drying time is more of a challenge and our tests showed the developing action is impeded because of the slower solvent evaporation. When the developer dries, the indications become fuzzy or show excessive bleed out.

Penetrant Developer

We were not able to get good results at 32°F (0°C) because the developer remained wet and did not dry within a reasonable amount of time. At 38 – 40°F (3 – 4°C), and with some air movement, developer film will dry at 5 times the standard time at 75°F (24°C).
 

TemperatureDeveloper Drying Time
75°F / 24°C Standard
40°F / 4°C 5 x Standard

A positive note is at low temperatures, we found good indications with extremely small and tight defects. The slow drying rate of the developer film allows greater bleed out of the penetrant from the defect. For large defects, longer development time caused excessive bleed out making indication interpretation more difficult.


Contact us if you need more help assessing your low temperature dye penetrant application, or have any questions on additional products for dye or liquid penetrant testing

Do you have any tips for low temperature dye penetrant testing or other non-destructive testing?
Share your ideas in the comments section below.

Source: https://magnaflux.com/Magnaflux/Blog/Low-Temperature-Dye-Penetrant-Testing?utm_source=linkedin&utm_medium=social&utm_campaign=Education&utm_content=Low-Temp-Dye-Penetrant

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Corporate NDT Training

Corporate NDT TrainingThe American Institute of Nondestructive Testing (AINDT) offers online and hands-on training for your company. Simply set up a corporate account with us for easy billing and additional discounts. All individual classes include study material, access to our online learning system, and instructor support via phone, video conference and/or email. Our online Level I and II final exams are fully proctored by Examity online proctoring services to ensure the highest level of integrity for your company's training needs. Unlike most NDT schools we have no minimum class size or limited training schedules. We will work with your schedule to get you the training you need. We are a fully-staffed NDT school, offering training in UT, RT, MT, PT, VT and radiation safety. Our 6,200 square foot facility includes all the equipment and flawed specimens you'll need to complete your hands-on training. Call us today (855) 313-0325 and we will work with you to customize an NDT program fits your budget and schedule!

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Personalized Hybrid Training School

If you are considering a new career in nondestructive testing, contact AINDT today. We are a personalized hybrid training school for nondestructive testing, that prides itself in top-notch education, a state-of-the-art facility, great relationships with top employers in the NDT industry, and more. AINDT is individualized—we take great strides to personally get to know each student--not only their learning style but their goals for a new career path. We are not a high-pressure sales company. We are passionate about what we do, and we do it well. You won't get an automated voicemail system. Our instructors are on hand to personally take your calls and answer all your questions. At AINDT, we want you to know our school, understand the career field of nondestructive testing, and make the right choice for you and your life. You will love your new career with NDT. Call us today to get started: (855) 313-0325 or visit us on the web at www.trainingndt.com

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Corrosion Under Insulation: The 7 Inspection Methods You Must Know About

Melissa Syvrais | Apr 14, 2016
https://www.linkedin.com/pulse/corrosion-under-insulation-7-inspection-methods-you-must-syvrais-1

April 4, 2016 - Author: Charles Tremblay

As we discussed in our previous article, corrosion under insulation (CUI) is one of the most difficult corrosion processes to prevent. The reason for that is, by and large, no matter the precautions taken, water invariably seeps into the insulation and begins its dirty work—sometimes unseen until process leakage occurs. Data shows that about 60% of pipe leaks are caused by CUI. That’s not good.

CUI is difficult to find because the insulation covers the corrosion problem until it is too late. Removing insulation, inspecting, and then reinstating the insulation after inspection is an expensive process. Inspecting without removing insulation and weather jackets greatly reduces the cost of inspections. Non-destructive testing methods to detect CUI in such a way is therefore a major benefit to the industry.

There are a number of methods used today to inspect for CUI. No one method is ever used by itself—several methods complement each other for optimal results, but that’s not the object of this article.

The most common and straightforward way to inspect for corrosion under insulation is to cut plugs in the insulation that can be removed to allow for ultrasonic testing. The other commonly used methods are radiography, and complete insulation removal. More advanced methods include pulsed eddy current. CLICK HERE to read the seven most common methods of inspecting for CUI with their pros and cons.

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NDT Certification

NDT CertificationAINDT offers your complete training and certification to get you started on a rewarding, high-paying career in nondestructive testing. NDT is a constantly-evolving field in high demand in all manner of industries, from transportation to utility and power. If you are looking for an NDT training school that offers all the training you need to get into a rewarding career in nondestructive testing, look no further than AINDT! Our blended learning program offers you the convenience of online NDT training from wherever you may live, followed by hands-on NDT training at our Baxter, MN facility. The combination of our online NDT curriculum, followed by 18 days of hands-on training using the most up-to-date NDT equipment will give you the skills needed to enter into a rewarding career in nondestructive testing. Our NDT training program includes all required study material and books for your online training, which takes approximately 6 months. Our training program will prepare you for NDT certification by an NDT employer. The online portion of your NDT training can be started at any time, and hands-on training is available 6 times per year (every other month starting in January) and will be scheduled at the student's discretion. With job placement assistance and an amazing new career waiting for you, call AINDT today for more information: (855) 313-0325. Instructors are waiting to speak with you!

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ASNT Level III Basic Exam Materials

ASNT Level III Basic Exam MaterialsAINDT's intensive exam prep course offers everything you need for success on your exam. You may want to get a jump on the materials you will need for your ASNT Level III Basic Exam prep course. There are four books required for this course. These books are available for purchase from ASNT.org or we can ship them to you when you enroll:

  • ASNT Level III Study Guide: Basic, Revised
  • Recommended Practice No. SNT-TC-1A: Personnel Qualification and Certification in Nondestructive Testing 2011
  • ASNT Standard for Qualification & Certification of Nondestructive Testing Personnel, ANSI/ASNT CP-189-2011
  • Materials and Processes for NDT Technology, Second Edition

Call AINDT today for more information or to speak to an instructor: (855) 313-0325. Your exciting new career awaits!

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ASNT Level III Basic Exam

ASNT Level III Basic ExamAt AINDT, our success is your success. We want you to have the best possible opportunities in this exciting field, so we prepare you with the most effective methods. Our ASNT Level III Basic Exam prep course is tailored to best prepare you for exam success. This online program covers the three main components of the ASNT Level III Basic Exam:

  • SNT-TC-1A/CP-189 comparisons and analysis to understand various programs which establish the criteria for NDT personal certification as well as their differences
  • Materials and processes for NDT technology, and
  • 11 various methods contained in Recommended Practice TC-1A

Call (855) 313-0325 today for more information on the ASNT Level III Basic Exam prep course and getting started with your new career in NDT.

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School For Thought

Oct02 InspirationalGraphicIf you're looking for a new direction in a rewarding new career, look no further than AINDT. AINDT offers the best, most affordable vocational school around. Non-destructive testing is a growing industry that is needed in just about every aspect of our daily lives from the auto industry, to bridges, to oil and gas development, to aerospace. AINDT offers the technical vocational training you need to get certified in a high-demand, well-paying career that will never become obsolete. Combining both interactive, trade school courses with hands-on training, AINDT also offers job placement assistance to find your perfect fit in your chosen field. Call 855-313-0325 today. Instructors are waiting to talk to you!
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What Does a Non Destructive Inspector Make?

Source: Chron, What Does a Non Destructive Inspector Make?by Fred Decker, Demand Media
http://work.chron.com/non-destructive-inspector-make-20299.html

"NDT certification requires a combination of formal training and practical experience. For example, candidates with a degree in engineering need only one year's experience to be eligible for API certification, while those with a high school education need three years' experience. Each certification must also be maintained through a regular program of continuing education. The PQNDT survey noted that unemployment in the field was approximately 5 percent in 2012, lower than the national average for all occupations, and salaries were up over the previous year. Most respondents to the survey felt confident in their job security, and 49 percent expected job prospects to be better than the previous year."

The American Institute of Nondestructive Testing is licensed as a private career school with the Minnesota Office of Higher Education pursuant to Minnesota Statutes, sections 141.21 to 141.32. Licensure is not an endorsement of the institution. Credits earned at the institution may not transfer to all other institutions.

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Steady Investment In Middle East and North African Energy Industry Powers Demand for NDT Inspection Services

Source: Company : Frost & Sullivan
Thursday, December 11, 2014 2:36PM IST (9:06AM GMT)b2ap3_thumbnail_bwi-logo.jpg

Read the article here.

"Steady Investment In Middle East and North African Energy Industry Powers Demand for NDT Inspection Services Focus will move from competing on price to competing on technology and quality of service, finds Frost & Sullivan Dubai, United Arab Emirates

Continued investment in new oil and gas as well as power generation projects is accelerating the need for nondestructive testing (NDT) inspection services in the Middle East and North Africa. Despite pressure on global oil prices and fears of a slowdown, the Middle Eastern oil and gas industry is expected to remain robust, offering immense growth opportunities for the NDT inspection services market.

Educating customers on the importance of quality over price will be vital to succeed in this competitive market. Participants must also explore the possibility of providing advanced NDT services to offset low profit margins."

The American Institute of Nondestructive Testing (Baxter, MN) prides ourselves in quality and price. If you are considering a career in nondestructive testing - call 855-313-0325 to talk directly to an instructor today!

Read the entire analysis from Frost & Sullivan here.

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Change Your Life with a New Career in NDT!

b2ap3_thumbnail_Dec01_CertificateProgram.jpg

 

The American Institute of NonDestructive Testing offers a Nondestructive Testing Technologies Certificate. This program includes 11 week online and 24 day hands-on training. 

Our Nondestructive Testing Technologies Certificate Program includes daily, live, instructor led question / answer session through gototraining.com. Join in with other students live and participate in the discussions.

Our online learning system allows students flexibility to meet their personal education goals.

The online portion of this certificate program can be started at any time. Hands-on training is available 5 times a year and will be scheduled at the students’ discretion.

To find out if a career in NDT is right for you, call an instructor today at 855-313-0325.

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