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Free API-571 Exam Braindumps (page: 49)

Page 48 of 114
PDF with 454 Questions

The severity of hydrochloric acid corrosion ________ with _________ HCl concentration and increasing temperatures.

  1. Decreases, decreasing
  2. Increases, increasing
  3. Decreases, increasing
  4. Increases, decreasing

Answer(s): B



Corrosion from oxygen tends to be __________ type damage and can show up anywhere even if only very small amounts break through the scavenging system.

  1. General
  2. Localized
  3. Pitting
  4. Cracking

Answer(s): C



Vessels constructed after December, 1987 are subject to the requirements of ________ of ASME Section VIII, Division 1.

  1. UW-26
  2. UG-31
  3. UB-54
  4. UCS-66

Answer(s): D



In most cases, brittle fracture occurs only at temperatures below the Charpy impact transition temperature. Steel cleanliness and ________ have a significant influence on toughness and resistance to brittle fracture.

  1. Alloy composition
  2. Tensile strength
  3. Grain size
  4. Pressure

Answer(s): C






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