Code Requirements Flashcards
7 cards from real API 510 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Code Requirements flashcards as text
When API 510 refers to an 'alteration' to a pressure vessel, which of the following best describes this term?
Answer: A physical change to a pressure-containing component that affects its design
An alteration is a physical change to pressure-containing parts that affects the design conditions or the pressure-containing capability of the vessel.
According to API 510, what is the primary purpose of the corrosion rate established from inspection data?
Answer: To set the next inspection interval and predict remaining service life
The corrosion rate is used to calculate remaining life and to set the next inspection interval based on when the vessel will reach minimum required thickness.
Under API 510, a vessel owner wants to use a higher allowable stress than the original code of construction allowed. This would constitute:
Answer: A rerating of the vessel requiring engineering review and documentation
Using higher allowable stress to increase MAWP constitutes a rerating that requires engineering calculations, documentation, and review per API 510.
API 510 specifies that weld repairs on pressure vessels must be performed using:
Answer: Procedures and welders qualified in accordance with the applicable construction code
Weld repairs must use procedures and welders qualified per the applicable construction code (typically ASME Section VIII and Section IX).
According to API 510, what post-weld heat treatment (PWHT) requirement applies to weld repairs on vessels that required PWHT during original fabrication?
Answer: PWHT is required unless an approved alternative procedure is used
Vessels that required PWHT during fabrication generally require PWHT after repair welding unless an approved alternative (such as temper bead welding) is documented and approved.
Under API 510, the term 'fitness-for-service' (FFS) assessment is used to:
Answer: Evaluate whether a vessel with a flaw or damage can continue in service safely
FFS assessment evaluates whether a vessel containing flaws, damage, or degradation can continue to operate safely under defined conditions.
When API 510 requires a pressure test after a repair or alteration, the default test is a:
Answer: Hydrostatic test at 1.3 times MAWP (or per the applicable construction code)
The default pressure test after repair or alteration is a hydrostatic test at the pressure specified by the applicable construction code, typically 1.3 times MAWP for ASME vessels.