API 653 CERTIFICATE PREP- API 575
STUDY GUIDE WITH QUESTIONS AND
ANSWERS WRITTEN CORRECTLY
Prior to conducting a tank inspection, the inspector should: - ANSWER✔✔✨---read previous
inspection records.Anchor bolts may be subject to what type of degradation?
The generic definition of atmospheric pressure is pressures up to: - ANSWER✔✔✨---15 psig
The inspection guidelines of API 572 should be followed when the operating pressure exceeds: -
ANSWER✔✔✨---2.5 psig
As the product temperature increases, the product's vapor pressure: - ANSWER✔✔✨---Decreases
only if specific gravity is less than 1.0.
A pressure-vacuum vent is installed on a tank. The PV vent will ensure that the inside pressure or inside
vacuum does not exceed: - ANSWER✔✔✨---A few ounces of pressure.
While in operation, which tank type roof is supported by internal members? - ANSWER✔✔✨---Cone
roof
Fixed-roof tanks are often self-supporting when tank diameter does not exceed: - ANSWER✔✔✨---
60 feet
Which is an advantage of a geodesic dome roof? - ANSWER✔✔✨---Keeps snow and rain off of an
internal floating roof and Can be used on any size of tank
, What is the primary reason for using a floating roof instead of a cone roof tank? - ANSWER✔✔✨---
Minimizes vapor emissions
Which type of external floating-roof is the most susceptible to sinking? - ANSWER✔✔✨---Pan
Floating-roof
Which type of external floating-roof is the least susceptible to sinking? - ANSWER✔✔✨---Double-
deck Floating-roof
Which is the most common type of floating-roof seal? - ANSWER✔✔✨---Mechanical shoe
Why are internal floating roofs sometimes used? - ANSWER✔✔✨---Reduces vapor loss or minimizes
effects of weather (rain & snow)
What kind of floating roofs is normally not constructed from steel? - ANSWER✔✔✨---Internal on
floats
Low-pressure storage tanks are those with a design pressure from: - ANSWER✔✔✨---2.5 - 15 psig.
Low-pressure storage tanks are normally used for products that have a: - ANSWER✔✔✨---High
vapor pressure.
API 620 Appendix R provides design rules for refrigerated tanks with design
temperatures between: - ANSWER✔✔✨----60 to 40 F.
API 620 Appendix Q provides design rules for refrigerated tanks with design
temperatures between: - ANSWER✔✔✨----270 to -60 F.
Hemispheroidal, spheroidal, and noded spheroidal tanks are commonly used when
the design pressure exceeds: - ANSWER✔✔✨---5.0 psig.
STUDY GUIDE WITH QUESTIONS AND
ANSWERS WRITTEN CORRECTLY
Prior to conducting a tank inspection, the inspector should: - ANSWER✔✔✨---read previous
inspection records.Anchor bolts may be subject to what type of degradation?
The generic definition of atmospheric pressure is pressures up to: - ANSWER✔✔✨---15 psig
The inspection guidelines of API 572 should be followed when the operating pressure exceeds: -
ANSWER✔✔✨---2.5 psig
As the product temperature increases, the product's vapor pressure: - ANSWER✔✔✨---Decreases
only if specific gravity is less than 1.0.
A pressure-vacuum vent is installed on a tank. The PV vent will ensure that the inside pressure or inside
vacuum does not exceed: - ANSWER✔✔✨---A few ounces of pressure.
While in operation, which tank type roof is supported by internal members? - ANSWER✔✔✨---Cone
roof
Fixed-roof tanks are often self-supporting when tank diameter does not exceed: - ANSWER✔✔✨---
60 feet
Which is an advantage of a geodesic dome roof? - ANSWER✔✔✨---Keeps snow and rain off of an
internal floating roof and Can be used on any size of tank
, What is the primary reason for using a floating roof instead of a cone roof tank? - ANSWER✔✔✨---
Minimizes vapor emissions
Which type of external floating-roof is the most susceptible to sinking? - ANSWER✔✔✨---Pan
Floating-roof
Which type of external floating-roof is the least susceptible to sinking? - ANSWER✔✔✨---Double-
deck Floating-roof
Which is the most common type of floating-roof seal? - ANSWER✔✔✨---Mechanical shoe
Why are internal floating roofs sometimes used? - ANSWER✔✔✨---Reduces vapor loss or minimizes
effects of weather (rain & snow)
What kind of floating roofs is normally not constructed from steel? - ANSWER✔✔✨---Internal on
floats
Low-pressure storage tanks are those with a design pressure from: - ANSWER✔✔✨---2.5 - 15 psig.
Low-pressure storage tanks are normally used for products that have a: - ANSWER✔✔✨---High
vapor pressure.
API 620 Appendix R provides design rules for refrigerated tanks with design
temperatures between: - ANSWER✔✔✨----60 to 40 F.
API 620 Appendix Q provides design rules for refrigerated tanks with design
temperatures between: - ANSWER✔✔✨----270 to -60 F.
Hemispheroidal, spheroidal, and noded spheroidal tanks are commonly used when
the design pressure exceeds: - ANSWER✔✔✨---5.0 psig.
