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Wilkinson Coutts & Matthews Integrity Training

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WILKINSON COUTTS / MATTHEWS INTEGRITY HUB: an up-to-the-minute information mix designed to help you with your lifework and career development in the asset integrity, inspection and NDE industries.

Matthew Petroleum Notes


Each of our technical quizzes is compiled to give you an insight into the technical coverage of codes and standards included in various certification exams in the integrity industry. We’ve also included areas of specific technical interest on other integrity topics.

There’s only 5 questions per quiz. Have a go at them first then check the answers at the bottom of the page to see how you’ve done. There’s a ‘5-minute coaching section’ at the end of each quiz set to guide you on the relevant technical subject.


Pressure Testing

Pressure testing is a key activity in helping to confirm the integrity of new or in-service vessels, pipework, pump casings and valves of all types. There are important safety and technical aspects to it and it is closely controlled by codes and company practices.

Try these five quiz questions about the technical aspects of pressure testing. You can find the link to the answers at the end but have a go at them first.

Qu1. Pressure testing of ASME pipework

According to ASME B31.3 terminology, a pressure test using water at 1.5 x MAWP is called a;

  1. Proof test
  2. Sensitive leak test
  3. Hydraulic test
  4. Hydrostatic leak test

Qu2. Test pressures

What pressure would be used for a B31.3 hydrostatic leak test on pipework with a design (MAWP) pressure of 500 psi and a maximum design temperature of 800 degF

  1. It can vary, but definitely less than 500psi
  2. 650 psi
  3. 750 psi
  4. Greater than 750 psi

Qu3. Code-specified test pressures

Test pressures listed in ASME pressure equipment codes are

  1. Minimum pressures allowed for the test
  2. Maximum pressures allowed for the test
  3. Allowed a +/- 3% tolerance
  4. Allowed a +/- 10% tolerance

Qu 4: Testing of storage tanks

What is the duration of a full hydrostatic test on a large above-ground cylindrical storage tank?

  1. 4 hours
  2. 8 hours
  3. 24 hours
  4. 48 hours

Qu5. Pressure testing temperature

The chances of brittle fracture during hydrostatic testing of a pressure equipment component are minimised by performing the test at what temperature?

  1. Below MDMT
  2. Above the grain transformation temperature
  3. Above the FATT transition temperature
  4. Below the FATT transition temperature

Once you have had a try at the questions, have a review of THE ANSWERS

If you didn’t get them all correct, have a look through our 5-minute coaching points below


Pressure testing

Pressure testing is not a complete test for integrity but provides an important check for leakage and gross design errors. It is equally undesirable to either over-pressurise or under-pressurise a component. The type and test pressures used for pressure testing are specified by construction and post-construction codes. Terminology and test pressures vary between codes and components so can be a little confusing.

See our short slide presentation covering this topic

Pressuse Testing presentation

Matthews Masterclass