Question 1

Caustic embrittlement cracking can be effectively prevented by means of PWHT at a temperature of _______.

Accepted Answer

A)  1100º F 
B)  1150º F 
C)  1200º F 
D)  1250º F 
A)  1100º F 
B)  1150º F 
C)  1200º F 
D)  1250º F

Question 2

Refractory anchors must be resistant to __________ in high temperature services.

Accepted Answer

A)  Thermal fatigue 
B)  Thermal cracking 
C)  Stress cracking 
D)  Oxidation 
A)  Thermal fatigue 
B)  Thermal cracking 
C)  Stress cracking 
D)  Oxidation

Question 3

Cadmium and lead will cause LME on _____________.

Accepted Answer

A)  Copper alloys 
B)  300 Series SS 
C)  Aluminum alloys 
D)  High strength steel 
A)  Copper alloys 
B)  300 Series SS 
C)  Aluminum alloys 
D)  High strength steel

Question 4

A form of fatigue cracking in which cracks develop under the combined effects of cyclic loading and corrosion is called _______. Cracking often initiates at stress concentrations such as a pit in the surface.

Accepted Answer

A)  Cyclic cracking 
B)  Corrosion fatigue 
C)  Stress fatigue 
D)  Stress cracking 
A)  Cyclic cracking 
B)  Corrosion fatigue 
C)  Stress fatigue 
D)  Stress cracking

Question 5

Damage from sigma phase appears in the form of ________.

Accepted Answer

A)  Corrosion 
B)  Hardness 
C)  Cracking 
D)  Ductility 
A)  Corrosion 
B)  Hardness 
C)  Cracking 
D)  Ductility

Question 6

Cracking of dissimilar weld metals occurs on the _________ side of a weld between an austenitic and a Ferritic material operating at high temperatures.

Accepted Answer

A)  Austenitic 
B)  Ferritic 
C)  Anodic 
D)  Cathodic 
A)  Austenitic 
B)  Ferritic 
C)  Anodic 
D)  Cathodic

Question 7

Most brittle failures appear as:

Accepted Answer

A)  Branched cracking. 
B)  Intergranular cracking. 
C)  Ductile tears. 
D)  Cleavage. 
A)  Branched cracking. 
B)  Intergranular cracking. 
C)  Ductile tears. 
D)  Cleavage.

Question 8

Which of the following materials is least affected by brittle fracture?

Accepted Answer

A)  Carbon steel 
B)  Chromes 
C)  300 series stainless steel 
D)  400 series stainless steel 
E)  All stainless steels 
A)  Carbon steel 
B)  Chromes 
C)  300 series stainless steel 
D)  400 series stainless steel 
E)  All stainless steels

Question 9

Annealed steels are more resistant to Spheroidization than normalized steels. _________ grained steels are more resistant than ______ grained steels.

Accepted Answer

A)  Fine, Course 
B)  Course, Fine 
C)  PWHT, Non-PWHT 
D)  Non-PWHT, PWHT 
A)  Fine, Course 
B)  Course, Fine 
C)  PWHT, Non-PWHT 
D)  Non-PWHT, PWHT

Question 10

The rate of creep deformation is a function of the material, load and temperature. The rate of damage is sensitive to both load and temperature. Generally, an increase of about _______ or an increase of ________ on stress can cut the remaining life in half.

Accepted Answer

A)  25º F, 15% 
B)  50º F, 10% 
C)  50º F, 15% 
D)  25º F, 10% 
A)  25º F, 15% 
B)  50º F, 10% 
C)  50º F, 15% 
D)  25º F, 10%

Question 11

PWHT is ___________ in preventing caustic SCC.

Accepted Answer

A)  Effective 
B)  Not effective 
C)  Not practical 
D)  None of the above 
A)  Effective 
B)  Not effective 
C)  Not practical 
D)  None of the above

Question 12

NAC may be found in hot hydrocarbon streams downstream of the crude and vacuum units, __________ any hydrogen mix point.

Accepted Answer

A)  Upstream of 
B)  Downstream of 
C)  Adjacent to 
D)  Around 
A)  Upstream of 
B)  Downstream of 
C)  Adjacent to 
D)  Around

Caustic embrittlement cracking can be effectively prevented by means of PWHT at a temperature of _______.

Refractory anchors must be resistant to __________ in high temperature services.

Cadmium and lead will cause LME on _____________.

A form of fatigue cracking in which cracks develop under the combined effects of cyclic loading and corrosion is called _______. Cracking often initiates at stress concentrations such as a pit in the surface.

Damage from sigma phase appears in the form of ________.

Cracking of dissimilar weld metals occurs on the _________ side of a weld between an austenitic and a Ferritic material operating at high temperatures.

Most brittle failures appear as:

Which of the following materials is least affected by brittle fracture?

Annealed steels are more resistant to Spheroidization than normalized steels. ___ grained steels are more resistant than grained steels.

The rate of creep deformation is a function of the material, load and temperature. The rate of damage is sensitive to both load and temperature. Generally, an increase of about _ or an increase of __ on stress can cut the remaining life in half.

PWHT is ___________ in preventing caustic SCC.

NAC may be found in hot hydrocarbon streams downstream of the crude and vacuum units, __________ any hydrogen mix point.

Risk Based Inspection

Filters

Exam 1: Corrosion and Materials

Caustic embrittlement cracking can be effectively prevented by means of PWHT at a temperature of _______.

Refractory anchors must be resistant to __________ in high temperature services.

Cadmium and lead will cause LME on _____________.

A form of fatigue cracking in which cracks develop under the combined effects of cyclic loading and corrosion is called _______. Cracking often initiates at stress concentrations such as a pit in the surface.

Damage from sigma phase appears in the form of ________.

Cracking of dissimilar weld metals occurs on the _________ side of a weld between an austenitic and a Ferritic material operating at high temperatures.

Most brittle failures appear as:

Which of the following materials is least affected by brittle fracture?

Annealed steels are more resistant to Spheroidization than normalized steels. _________ grained steels are more resistant than ______ grained steels.

The rate of creep deformation is a function of the material, load and temperature. The rate of damage is sensitive to both load and temperature. Generally, an increase of about _______ or an increase of ________ on stress can cut the remaining life in half.

PWHT is ___________ in preventing caustic SCC.

NAC may be found in hot hydrocarbon streams downstream of the crude and vacuum units, __________ any hydrogen mix point.

Risk Based Inspection

Filters

Annealed steels are more resistant to Spheroidization than normalized steels. ___ grained steels are more resistant than grained steels.

The rate of creep deformation is a function of the material, load and temperature. The rate of damage is sensitive to both load and temperature. Generally, an increase of about _ or an increase of __ on stress can cut the remaining life in half.