Welding and Materials Science Quiz
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Questions and Answers

What is a vessel considered during a process outage?

  • Out of service (correct)
  • Under repair
  • In maintenance
  • Major repair

When should a Management of Change (MOC) work process be completed?

  • Before either physical or process changes (correct)
  • Before personnel, physical or process changes
  • Before physical changes
  • Before process changes

What is the definition of MAWP?

  • Maximum pressure at the vessel's top
  • Maximum pressure at the vessel's mid-point
  • Maximum pressure at the vessel's bottom
  • Maximum pressure anywhere on the vessel (correct)

What is internal distributor piping considered as?

<p>A non-pressure boundary vessel component (C)</p> Signup and view all the answers

What is a vessel called if it was built to a recognized standard but has lost its nameplate or stamping?

<p>A non-code vessel (C)</p> Signup and view all the answers

What type of work is defined as removing and replacing a major part of the pressure boundary?

<p>Major repair (D)</p> Signup and view all the answers

What are the two primary factors of Risk in an RBI assessment?

<p>Consequence of Failure &amp; Probability of Failure (B)</p> Signup and view all the answers

What is the primary difference between plate lining and strip lining?

<p>Plate lining is welded inside the vessel, strip lining is welded outside the vessel. (C)</p> Signup and view all the answers

What is the term for physical activities conducted to check conformance with specifications?

<p>Quality Control (D)</p> Signup and view all the answers

Who issues a 'R-Stamp' used for repairs?

<p>A Pressure Vessel Engineer (C)</p> Signup and view all the answers

What is the condition in which temper embrittlement occurs in certain materials?

<p>When the operation temperature is within 30 °F of the vessel's MDMT (B)</p> Signup and view all the answers

What is the typical rating of an unfired steam boiler drum?

<p>12 psig at 400°F (C)</p> Signup and view all the answers

What is the term used to describe the base metal whose mechanical properties or microstructure has been altered by welding or thermal cutting?

<p>Heat Affected Zone (D)</p> Signup and view all the answers

What is the purpose of an Examination Point during repairs and alterations?

<p>To stop the work and perform an examination (B)</p> Signup and view all the answers

Which of the following is correct concerning Examination Points?

<p>These are locations where work is stopped to perform an examination (D)</p> Signup and view all the answers

What is an imperfection?

<p>A flaw that may or may not exceed acceptance standards (B)</p> Signup and view all the answers

What is the term used to describe a defect?

<p>Any discontinuity found that may or may not exceed acceptance standards (B)</p> Signup and view all the answers

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