API 510 Study Plan: 30, 60 and 90 Days

Start with a score and a window

Find your starting point. Before you block any time, take the free 10-question check. It takes a few minutes and shows which areas to study first, so you spend week one on your real gaps instead of your favorite topics.

Log each miss under one of the five Body of Knowledge sections: thickness and integrity calculations, welding procedure review, nondestructive examination, general practical knowledge and specific practical knowledge. The Body of Knowledge guide explains each section. Add one more note per miss: did you not know the idea, set up the math wrong, or take too long finding the reference? That note decides what you practice.

Pick your window and confirm the editions. Count backward from the testing window you plan to sit, not forward from today. Windows, application deadlines and the six-month validity rule live in the exam schedule and fees guide, so check it before you commit to a date. Then open the effectivity sheet guide and confirm the editions for that window. Studying from the wrong edition wastes the exact hours you are trying to protect.

Work out how many weeks remain and choose a plan:

• Under 6 weeks: the 30-day plan.
• 6 to 10 weeks: the 60-day plan.
• 10 weeks or more: the 90-day plan.

Three plans: 30, 60 and 90 days

The 30-day plan, calculations first. This plan is for inspectors who work vessels daily and need to sharpen, not start from scratch.

• Week 1: Work the Section I calculations: minimum thickness, MAWP, corrosion rate, remaining life and inspection interval. Do five problems per type with fresh numbers. The calculations guide lists each area, and the MAWP and thickness calculator lets you check your working.
• Week 2: Run the open-book lookup drill. Pick a topic, find the governing section in your own copy of the reference, and time yourself. Log every lookup that takes longer than you'd like.
• Week 3: Cover your lowest two sections from the check. Short daily sessions beat one long weekend push.
• Week 4: Retake a timed block of mixed practice, review every miss and rebuild your one-page method sheets.

The 60-day plan, adding mechanisms and welding review. Use the 30-day plan as the spine, and add two topics that tend to take longer to build.

• Weeks 1 to 3: Calculations, as above, plus the edition check for your references.
• Weeks 4 to 5: Damage mechanisms. The damage mechanisms guide lists the RP 571 paragraphs on the current sheet. For each one, write where it shows up and how it is found.
• Weeks 6 to 7: Welding procedure and qualification review. The WPS and PQR review guide gives you a step order you can reuse.
• Week 8: Mixed review, then a timed block.

The 90-day plan, adding closed-book recall and full timed runs. This plan suits inspectors starting from a thinner base, or anyone who wants room for a slow week at work.

• Weeks 1 to 4: Calculations and the lookup drill, with a retake of the check at the end of week 4 to see which section moved.
• Weeks 5 to 8: Damage mechanisms, NDE methods and welding review.
• Weeks 9 to 11: Closed-book recall. The exam's closed-book part has no code PDFs, so turn each Body of Knowledge line into a question you answer from memory. The closed-book guide shows how.
• Weeks 12 to 13: Two full timed runs, one a week, with a day of review after each. Practice at the exam's pace: 110 closed-book questions in 2.75 hours, then 60 open-book questions in 3.75 hours.

The shift-worker version

Rotating shifts break the "one hour every evening" model, so build the plan from blocks you can protect.

• Three 45-minute sessions on your best days, each on one topic only.
• One weekend block of two to three hours, reserved for a timed set and its review.
• Keep a pocket list of lookups and formulas to rehearse on breaks. Recall improves with short, frequent repetition.
• Plan for outages. If your site has a turnaround before the window, front-load the plan so the busy weeks only need review.

Take whichever plan length you chose and add two weeks if your shift pattern changes monthly.

Weekly review and the final week

End every week with the same ten minutes: list what you missed, tag each miss as concept, setup or lookup, and choose next week's first session from that list. Every few weeks, retake a short check and compare the section breakdown with your first one. The weakest section tells you where to move. Pair the plan with the reading order so each week's sessions use the right documents.

In the final week, stop adding new content. Spend it on lookups in the sections on your window's effectivity sheet, one timed calculation set per day and a calm last evening. Confirm your appointment, your travel and your ID the week before so nothing competes with your study time.

FAQ

How long should I study for API 510?

Plan for the weeks between your start date and your window, usually 4 to 13. The requirements and cost guide suggests eight weeks as a starting point. Take the free check, then add time if calculations or lookups need more reps.

Which Body of Knowledge section should I start with?

Start with whichever section scores lowest on your check. If the results are close, begin with Section I, the calculations, because they follow set methods and improve fastest with repetition.

Can I study for API 510 while working shifts?

Yes. Use the shift-worker version above: three 45-minute sessions and one weekend block, with extra weeks added if your rotation changes often. Consistency matters more than session length.

When should I apply relative to my study start?

Apply by the window's deadline, and remember that an application is valid for six months from the first exam date you request. The schedule and fees guide has the dates. Many inspectors start studying first and file the application once their plan length is clear.