API 571/ 570 PRACTICE QUESTIONS
What does "L" mean in Austentic SS, like 304L?
A) Has a low carbon content
B) has a low chrome content
C) has a low nickel level
D) has a low toughness level
E) is lousy steel - Answer -A
What does "H" mean in Austenitic SS, like 316 H?
A) Has a high carbon content
B) has a high chrome content
C) has a high nickel level
D) has a high toughness level
E) is horrible steel - Answer -A
A Brittle Fracture:
A) is caused by stress cycles
B) is always the result of thermal stresses
C) Grows very rapidly with minimum deformation prior to failure
D) grows slowly and is dependent on time and stress - Answer -C
Which of the following materials is LEAST affected by Brittle Fracture?
A) carbon steel
B) chromes
C) 300 series stainless steel
D) 400 series stainless steel
E) all stainless steel - Answer -C
Which of the following is NOT a critical factor that contributes to a Brittle Fracture?
A) the material's fracture toughness
B) Maximum operating temperature
C) stress concentration at a flaw
D) magnitude of the residual stresses - Answer -B
Resistance to Brittle Fracture is called:
A) charpy
B) embossment
C) strength
D) Toughness - Answer -D
Which of the following increases the likelihood of Brittle Fracture?
A) Larger grain size.
B) operational temperatures above 800°F.
C) steels lees that ¼ " thick
D) the additional of nickel in the material - Answer -A
,Which of the following increases the likelihood of Brittle Fracture?
A) smaller grain size
B) operating above transitional temperature
C) Thicker materials
D) the additional of nickel in the material - Answer -C
What test is used to determine a material's toughness?
A) Charpy impact test 4.2.7.3.e
B) guided bend test
C) metallography
D) tension test
E) physical fitness test - Answer -A
Most brittle failures occur:
A) Below the impact transition temperature
B) on thinner materials
C) on "clean" steel
D) while in operation at elevated temperatures - Answer -A
ASME Section VIII had few limitations concerning Brittle Fracture prior to:
A) 1955
B) 1962
C) 1973
D) 1987 - Answer -D
Which of the following is NOT a Ferritic Steel?
A) 300 Series SS
B) 400 series SS
C) Chromes
D) carbon steel
E) none of the above - Answer -A
Low alloy steel can contain up to:
A) 5% chrome
B) 9% chrome
C) 12% chrome
D) 18% chrome
E) 30% chrome - Answer -B
Which of the following is an Austenitic SS?
A) Type 316
B) type 2205
C) type 405
D) type 410 - Answer -A
, Which of the following is a Ferritic SS?
A) type 316
B) type 2205
C) Type 405
D) type 410 - Answer -C
Which of the following is a Martensitic SS?
A) type 316
B) type 2205
C) type 405
D) TYPE 410 - Answer -D
Nickel alloys are materials that have over :
A) 18% nickel
B) 25% nickel
C) 30% nickel
D) 50% nickel - Answer -C
A 4" thick 5 Chrome vessel operates at 1200 psig and 900°F. When is this vessel least
likely to fail by Brittle Fracture?
A) hydrotesting
B) Normal Operation
C) shutting down the unit
D) starting up the unit - Answer -B
Most brittle failures appear as :
A) branched cracking
B) intergranular cracking
C) ductile tears
D) Cleveage - Answer -D
Which of the following is NOT a method used to prevent Brittle Fracture?
A) Thorough inspections
B) strict controls on selecting construction materials
C) post weld heat treatment
D) controlling minimum operating temperatures - Answer -A
Thermal Fatigue is caused by:
A) Cyclic stresses that come from temperature variations.
B) long term operation at elevated temperatures
C) excessive thermal growth
D) hours of physical activity during a hot summer day - Answer -A
Time to failure by Thermal Fatigue is primarily affected by :
A) magnitude of stress and operating temperature
B) Magnitude of stress and number of cycles
What does "L" mean in Austentic SS, like 304L?
A) Has a low carbon content
B) has a low chrome content
C) has a low nickel level
D) has a low toughness level
E) is lousy steel - Answer -A
What does "H" mean in Austenitic SS, like 316 H?
A) Has a high carbon content
B) has a high chrome content
C) has a high nickel level
D) has a high toughness level
E) is horrible steel - Answer -A
A Brittle Fracture:
A) is caused by stress cycles
B) is always the result of thermal stresses
C) Grows very rapidly with minimum deformation prior to failure
D) grows slowly and is dependent on time and stress - Answer -C
Which of the following materials is LEAST affected by Brittle Fracture?
A) carbon steel
B) chromes
C) 300 series stainless steel
D) 400 series stainless steel
E) all stainless steel - Answer -C
Which of the following is NOT a critical factor that contributes to a Brittle Fracture?
A) the material's fracture toughness
B) Maximum operating temperature
C) stress concentration at a flaw
D) magnitude of the residual stresses - Answer -B
Resistance to Brittle Fracture is called:
A) charpy
B) embossment
C) strength
D) Toughness - Answer -D
Which of the following increases the likelihood of Brittle Fracture?
A) Larger grain size.
B) operational temperatures above 800°F.
C) steels lees that ¼ " thick
D) the additional of nickel in the material - Answer -A
,Which of the following increases the likelihood of Brittle Fracture?
A) smaller grain size
B) operating above transitional temperature
C) Thicker materials
D) the additional of nickel in the material - Answer -C
What test is used to determine a material's toughness?
A) Charpy impact test 4.2.7.3.e
B) guided bend test
C) metallography
D) tension test
E) physical fitness test - Answer -A
Most brittle failures occur:
A) Below the impact transition temperature
B) on thinner materials
C) on "clean" steel
D) while in operation at elevated temperatures - Answer -A
ASME Section VIII had few limitations concerning Brittle Fracture prior to:
A) 1955
B) 1962
C) 1973
D) 1987 - Answer -D
Which of the following is NOT a Ferritic Steel?
A) 300 Series SS
B) 400 series SS
C) Chromes
D) carbon steel
E) none of the above - Answer -A
Low alloy steel can contain up to:
A) 5% chrome
B) 9% chrome
C) 12% chrome
D) 18% chrome
E) 30% chrome - Answer -B
Which of the following is an Austenitic SS?
A) Type 316
B) type 2205
C) type 405
D) type 410 - Answer -A
, Which of the following is a Ferritic SS?
A) type 316
B) type 2205
C) Type 405
D) type 410 - Answer -C
Which of the following is a Martensitic SS?
A) type 316
B) type 2205
C) type 405
D) TYPE 410 - Answer -D
Nickel alloys are materials that have over :
A) 18% nickel
B) 25% nickel
C) 30% nickel
D) 50% nickel - Answer -C
A 4" thick 5 Chrome vessel operates at 1200 psig and 900°F. When is this vessel least
likely to fail by Brittle Fracture?
A) hydrotesting
B) Normal Operation
C) shutting down the unit
D) starting up the unit - Answer -B
Most brittle failures appear as :
A) branched cracking
B) intergranular cracking
C) ductile tears
D) Cleveage - Answer -D
Which of the following is NOT a method used to prevent Brittle Fracture?
A) Thorough inspections
B) strict controls on selecting construction materials
C) post weld heat treatment
D) controlling minimum operating temperatures - Answer -A
Thermal Fatigue is caused by:
A) Cyclic stresses that come from temperature variations.
B) long term operation at elevated temperatures
C) excessive thermal growth
D) hours of physical activity during a hot summer day - Answer -A
Time to failure by Thermal Fatigue is primarily affected by :
A) magnitude of stress and operating temperature
B) Magnitude of stress and number of cycles
