API 653: tank inspection, repair,
alteration, and reconstruction Exam
Questions and Answers (Latest 2025)
What type of tanks does the standard apply? API 653 1.1.1 -
Correct Answer ✅ Steel storage tanks built to API 650 and
its predecessor API 12C
In case of a parent conflict between the requirements of API
650 and API 653 which standard Govern? API 653 1.1.2 -
Correct Answer ✅ API 653
What is meant by the term alteration? What are some
examples of alterations? API 653 3.1 - Correct Answer ✅
Anything that changes the physical dimensions
Man way 12" nozzles
What is the break over point? API 653 3.6 - Correct Answer
✅ The area on the tank bottom where settlement begins
What is meant by the term repair? What are some examples
of repairs? API 653 3.15 - Correct Answer ✅ Any work
necessary to restore and maintain a tank to a condition
suitable for safe operation
,API 653: tank inspection, repair,
alteration, and reconstruction Exam
Questions and Answers (Latest 2025)
What conditions would Necessitate the repair or replacement
of a roof plate? API 653 4.2.1.2 - Correct Answer ✅
Corrosion to a thickness of .09 in any 100 sq in area. Holes
What possibility must be given particular attention when
inspecting pipe columns supporting fixed roofs? API 653 4.2.2
- Correct Answer ✅ Severe internal corrosion
When a tank is to undergo a change in service what are five
factors that should be considered when evaluating the roof
and roof to shell junction? API 653 4.2.4 - Correct Answer
✅ A) internal pressure
B) external pressure
C) elevated temp
D) Low temp
E) normal and emergency venting
When determining controlling thickness in shell courses
widely scattered pits may be ignored provided that two
, API 653: tank inspection, repair,
alteration, and reconstruction Exam
Questions and Answers (Latest 2025)
conditions are met. What are these two conditions? API 653
4.3.2.2 - Correct Answer ✅ A) hope it being less than 1/2
the original shell thickness
B) The sum of dimensions does not exceed 2 inches in a 8
inch length
What are some typical forms of shell distortion? API 653
4.3.5.1 - Correct Answer ✅ Out of round, buckled sides, flat
spots, peeking and banding at weld joints
Do temperature cracks in concrete seriously affect the
strength of the concrete foundation? What can temperature
cracks in concrete eventually result in? API 653 4.5.1.2 -
Correct Answer ✅ No
Potential access points for moisture
What are 12 historical causes of tank bottom leakage listed in
this document? API 653 4.4.2 - Correct Answer ✅ A)
internal pitting
B) corrosion of weld joints
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Allivia. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.49. You're not tied to anything after your purchase.