Most ASNT UT Level II plans fail in the same spot: weeks of reading, a few days of calculation practice. The exam is built the other way round, because most of what you are asked is a setup decision or a small piece of arithmetic.
What should an ASNT UT Level II study plan contain?
Four phases, in order. ASNT’s central route has a General exam of 50 items in 2 hours and a Specific exam of 40 items in 2 hours, both closed book. ASNT publishes no fixed pass percentage, so a plan built around a target percentage has nothing to hold on to.
| Phase | What you do | How you know it is done |
|---|---|---|
| 1. Velocities | Carry the standard longitudinal and shear velocities in steel | You use them without looking them up |
| 2. Snell’s law | Work refraction and both critical angles | You sketch the beam path before the maths |
| 3. Quantitative core | Near field, impedance, decibels, angle-beam geometry | Your arithmetic slips shrink |
| 4. Supplied criteria | Apply acceptance criteria you are handed | You decide from the page, not from memory |
No hours appear in that table. That is deliberate. A technician with years on weld scans needs a shorter phase 3 than someone who has only run thickness gauges.
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What do you learn first, and why in that order?
Velocities first. Almost every later calculation starts from one: depth from time, angle from a wedge, wavelength from frequency. If you hesitate over the shear velocity in steel, you will hesitate on every angle-beam question that follows.
Snell’s law is next, and it is the one idea worth over-learning. Refraction explains why a wedge works, why there is a window between the first and second critical angles, and why a probe chosen for steel behaves differently on a different material. Our UT physics post covers the reasoning in more detail.
Then comes the quantitative core. Near field, acoustic impedance and reflection, decibel ratios, and the angle-beam geometry that gives surface distance, depth, second-leg depth and skip distance. Those four get a whole phase because they are where marks slip.
How do technicians learn this on the job?
Not from a syllabus. On a weld scan you meet it as a wedge that is worn, a root signal hiding under noise, a casting where the back wall fades. You learn Snell’s law because the beam is not where you thought it was.
Copy that. Take one real setup, say a single-V butt weld in plate, and walk it end to end: which probe angle, where the index point sits, what the half skip and full skip distances are, where the root should appear on the screen. One setup followed through teaches more than five separate chapters.
The classic field mistake is to fix a noisy scan with gain. Gain lifts signal and noise together. A worn wedge with rounded damping serrations needs replacing, then the exit point and angle need reverifying. That very situation is in our free questions, so try the sample and see how the stem is framed.
How do you practise phase 3 so it sticks?
Closed-book, by hand, with a calculator you are allowed to use. ASNT’s exam pages point to a computer-based testing and calculator demo, so practise on that format, not on scrap paper in your own style.
Do short blocks, not marathons. Ten minutes on impedance, then a break, then decibels. Write down every step, because the typical error is an order error: squaring too early, forgetting to subtract the reflected share, or reading a ratio as an energy figure. Our worked examples post shows that discipline step by step.
The ASNT UT Level II practice test bundle works these under timed conditions, with every answer explained.
Worked example: counting back from a January exam
Say you want to sit the General exam on 29 January 2027, so that the outline for exams before 5 February 2027 applies.
- ASNT asks you to allow 2 to 4 weeks for application review. Four weeks before 29 January is 1 January, so the application must be in by then, and earlier is safer.
- After approval you must schedule through MyCert and finish every exam you applied for within one year of the approval letter. Cancel or change at least 48 hours ahead, or you lose the fee.
- Now test the bad case. If you fail on 29 January, the 30-day waiting period runs to 28 February, and you also need a new approval letter. Your retake falls after 5 February, so it sits under the new outline.
That third step is the one people miss. A failed first attempt does not just cost money, it can move you onto a different list of topics. ASNT’s fee table gives a retake at $370 for members and $410 for nonmembers, against $740 and $820 for the initial UT exam.
What goes in the error log?
The log turns practice into progress. Tag each miss by type: a velocity or constant, a refraction sketch, an arithmetic order slip, a setup decision, or a criterion applied wrongly. Then write the line that settles it.
After a few blocks the pattern shows. Mostly arithmetic misses send you back to phase 3. Setup decisions mean phase 2, because the beam path in your head is wrong. Criterion errors mean phase 4, and the usual cause is relying on a limit you remember when the stem supplied a different one.
Where do candidates go wrong with study plans?
They study the wrong outline. ASNT’s pages list the UT General topics twice, once for exams prior to 5 February 2027 and once for exams after it, and our 2027 changes post lays them side by side. They also confuse ASNT central certification with employer SNT-TC-1A certification, which is a different route. And they skip the paperwork: the UT route lists 12 days of training and 120 days of experience in the method, and documents are checked before you can schedule. More traps are in the common mistakes post.
What to do next
Write your exam date at the top of a page, then draw the four phases backward from it, leaving the application window at the far end. Check which General outline your date falls under before you open a single note.
The certification guide has the domains and route facts, and the study guides hub lists the rest.
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