API 653 Cert Prep - API 575 Study Guide Exam Questions and Correct Answers
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.
A tank pad is installed with cinders. What chemical in the cinders can cause
bottom-side corrosion when the pad gets wet? - Answer-Sulfur
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.
A tank pad is installed with cinders. What chemical in the cinders can cause
bottom-side corrosion when the pad gets wet? - Answer-Sulfur
