API-580

API-580 practice questions, page 3 of 6, with answer review and explanations.

Question 11

The models are evaluated _____________ to provide both qualitative and quantitative insights about the level of risk and to identify the design, site, or operational characteristics that are the most important to risk

  1. Probabilistically
  2. Statistically
  3. Linearly
  4. Logically

Question 12

Potential source of errors in RBI analysis regarding data quality are the following except

  1. If the base line thickness were not performed the nominal thickness may be used for the original thickness
  2. If original thickness not available, averaged at thickness readings may be used
  3. If the original thickness not available, maximum at thickness readings may be used

Question 13

Potential source of errors in RBI analysis regarding data quality are the following except

  1. Assumptions in equipment history
  2. Outdated drawings and documentation
  3. Inspector error
  4. Advanced inspection methods

Question 14

The following assumption can be made that significantly impact the calculated corrosion rate early in the equipment life

  1. If the base line thickness were not performed the nominal thickness may be used for the original thickness
  2. If original thickness not available, averaged at thickness readings may be used
  3. If the original thickness not available, maximum at thickness readings may be used

Question 15

________________ may result in the calculated corrosion rate appearing artificially high or low.

  1. Clerical error
  2. Measurement error
  3. Inspector error
  4. At scanning