API 574 for API 570; Questions & Answers 100% Correct
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Course
API 570
Institution
API 570
API 574 for API 570; Questions & Answers
100% Correct
API Recommended Practice 574, Inspection of Piping, Tubing Valves, and
Fittings, does not cover:
a. control valves.
b. piping smaller than 2" NPS.
c. tubing smaller than 1.5" diameter.
d. fittings smaller than 2" NPS Answer-A
The refini...
API 574 for API 570; Questions & Answers
100% Correct
API Recommended Practice 574, Inspection of Piping, Tubing Valves, and
Fittings, does not cover:
a. control valves.
b. piping smaller than 2" NPS.
c. tubing smaller than 1.5" diameter.
d. fittings smaller than 2" NPS Answer-A
The refining industry generally uses what type piping for severe service?
a. brass
b. cast
c. seamless
d. longitudinal seam welded Answer-C
Piping made by rolling plates to size and welding the seams is larger than ______
inches outside diameter.
a. 10
b. 16
c. 14
, API 574 for API 570; Questions & Answers
100% Correct
d. 12 Answer-B
Steel and alloy piping are manufactured to standard dimensions in nominal pipe
sizes up to ______ inches.
a. 24
b. 36
c. 48
d. 50 Answer-C
Steel and alloy piping are also manufactured to standard thicknesses designated
as schedules in nominal pipe sizes up to _______ inches.
a. 24
b. 36
c. 48
d. 50 Answer-B
The actual thickness of wrought piping may vary from its nominal thickness by a
manufacturing under tolerance of as much as _________ percent.
, API 574 for API 570; Questions & Answers
100% Correct
a. 12.5
b. 12.0
c. 10.0
d. 10.5 Answer-A
Cast piping has thickness tolerance of + ______ inch and - _______ inch.
a. 1/16, 0
b. 1/16, 1/16
c. 1/32, 1/32
d. 3/64, 0 Answer-A
For all nominal pipe sizes of ______ inches and smaller, the size refers to the
nominal inside diameter.
a. 10
b. 12
c. 14
d. 16 Answer-B
, API 574 for API 570; Questions & Answers
100% Correct
Under tolerance of welded pipe often used in refinery service is ________ inch.
a. 0.125
b. 0.050
c. 0.010
d. 0.005 Answer-C
For what service is cast iron piping normally used.
a. Nonhazardous service, such as lube oils
b. Nonhazardous service, such as water.
c. Corrosive service, such as acids.
d. Noncorrosive service, such as low temperature caustic. Answer-B
Tubing is generally seamlessly drawn, but it may be welded. Its stated size is its
actual:
a. outside radius.
b. inside diameter.
c. outside diameter.
d. inside radius. Answer-C
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