A) Is caused by stress cycles. B) Is always the result of thermal stresses. C) Grow very rapidly with minimum deformation prior to failure. D) Grows slowly and is dependent on time and stress. A) Is caused by stress cycles. B) Is always the result of thermal stresses. C) Grow very rapidly with minimum deformation prior to failure. D) Grows slowly and is dependent on time and stress.

Exam 1: Corrosion and Materials

300 Series SS, 400 Series SS and duplex SS are subject to pitting and localized corrosion under insulation. In addition, __ are also subject to SCC if chlorides are present, while _ are less susceptible.

Free

(Multiple Choice)

4.9/5

(64)

Question 1

Correct Answer:

Verified

At high temperatures, metal components can slowly and continuously deform under load below the yield stress. This time dependent deformation of stressed components is known as __________.

Free

(Multiple Choice)

4.8/5

(89)

Question 2

Correct Answer:

Verified

Caustic embrittlement is a form of stress corrosion cracking characterized by surface-initiated cracks that occur in piping and equipment exposed to caustic, primarily adjacent to non-PWHT welds. Which of the following materials is the most resistant to embrittlement?

Free

(Multiple Choice)

4.8/5

(66)

Question 3

Correct Answer:

Verified

A condition where steel loses strength due to the removal of carbon and carbides leaving only an iron matrix is called decarburization. This occurs during high temperatures, during PWHT and from exposure to fires. Which of the following materials is not affected by this?

(Multiple Choice)

4.8/5

(73)

Question 4

_______ is the primary alloying agent that affects resistance to oxidation.

(Multiple Choice)

4.7/5

(82)

Question 5

Which of the following materials is not susceptible to Cl SCC?

(Multiple Choice)

4.7/5

(70)

Question 6

Which of these cast irons are not susceptible to graphitic corrosion?

(Multiple Choice)

4.9/5

(92)

Question 7

The amplitude and frequency of vibration as well as the _________ of the components are critical factors in vibration-induced fatigue.

(Multiple Choice)

4.9/5

(76)

Question 8

Start-up and shutdown of equipment increase the susceptibility of thermal fatigue. There is no set limit on temperature swings; however, as a practical rule, cracking may be suspected if the temperature swing exceeds about _________.

(Multiple Choice)

4.8/5

(68)

Question 9

With decarburization, the decarburized layer will be free of carbide phases. Carbon steel will be ______.

(Multiple Choice)

4.9/5

(85)

Question 10

The major factors affecting high temperature sulfidation are the temperature, the presence of hydrogen, the H₂S concentration and the ________.

(Multiple Choice)

4.8/5

(62)

Question 11

Which of the following materials are the least susceptible to caustic embrittlement?

(Multiple Choice)

4.9/5

(76)

Question 12

All piping and equipment exposed to HF acid at any concentration with hardness levels above the recommended limit (237 BHN) are subject to _________.

(Multiple Choice)

4.8/5

(69)

Question 13

300 series stainless steel heater tubes in an oil-burning furnace in the hydrocracker began to leak and the furnace was brought down. What was the probable cause of the cracking?

(Multiple Choice)

4.7/5

(72)

Question 14

With CO₂ corrosion, increasing temperatures _________ corrosion rates up to the point where CO₂ is vaporized.

(Multiple Choice)

5.0/5

(83)

Question 15

General or localized corrosion of carbon steels and other metals caused by dissolved salts, gases, organic compounds or microbiological activities is called ________.

(Multiple Choice)

4.9/5

(81)

Question 16

Refractory anchor material must be compatible with the _________ of the base metal

(Multiple Choice)

4.8/5

(78)

Question 17

Nitriding is usually confined to the surface of most components and will have a dull, ______ appearance. In more advanced stages, the material will exhibit very hard surface hardness.

(Multiple Choice)

4.8/5

(80)

Question 18

With sulfuric acid corrosion, mix points with _______ cause heat to be released and high corrosion rates can occur where the acid becomes diluted.

(Multiple Choice)

4.8/5

(84)

Question 19

A brittle fracture:

(Multiple Choice)

4.8/5

(83)

Question 20

Showing 1 - 20 of 452

300 Series SS, 400 Series SS and duplex SS are subject to pitting and localized corrosion under insulation. In addition, __ are also subject to SCC if chlorides are present, while _ are less susceptible.

At high temperatures, metal components can slowly and continuously deform under load below the yield stress. This time dependent deformation of stressed components is known as __________.

Caustic embrittlement is a form of stress corrosion cracking characterized by surface-initiated cracks that occur in piping and equipment exposed to caustic, primarily adjacent to non-PWHT welds. Which of the following materials is the most resistant to embrittlement?

A condition where steel loses strength due to the removal of carbon and carbides leaving only an iron matrix is called decarburization. This occurs during high temperatures, during PWHT and from exposure to fires. Which of the following materials is not affected by this?

_______ is the primary alloying agent that affects resistance to oxidation.

Which of the following materials is not susceptible to Cl SCC?

Which of these cast irons are not susceptible to graphitic corrosion?

The amplitude and frequency of vibration as well as the _________ of the components are critical factors in vibration-induced fatigue.

Start-up and shutdown of equipment increase the susceptibility of thermal fatigue. There is no set limit on temperature swings; however, as a practical rule, cracking may be suspected if the temperature swing exceeds about _________.

With decarburization, the decarburized layer will be free of carbide phases. Carbon steel will be ______.

The major factors affecting high temperature sulfidation are the temperature, the presence of hydrogen, the H₂S concentration and the ________.

Which of the following materials are the least susceptible to caustic embrittlement?

All piping and equipment exposed to HF acid at any concentration with hardness levels above the recommended limit (237 BHN) are subject to _________.

300 series stainless steel heater tubes in an oil-burning furnace in the hydrocracker began to leak and the furnace was brought down. What was the probable cause of the cracking?

With CO₂ corrosion, increasing temperatures _________ corrosion rates up to the point where CO₂ is vaporized.

General or localized corrosion of carbon steels and other metals caused by dissolved salts, gases, organic compounds or microbiological activities is called ________.

Refractory anchor material must be compatible with the _________ of the base metal

Nitriding is usually confined to the surface of most components and will have a dull, ______ appearance. In more advanced stages, the material will exhibit very hard surface hardness.

With sulfuric acid corrosion, mix points with _______ cause heat to be released and high corrosion rates can occur where the acid becomes diluted.

A brittle fracture:

Risk Based Inspection

Filters

Exam 1: Corrosion and Materials

300 Series SS, 400 Series SS and duplex SS are subject to pitting and localized corrosion under insulation. In addition, __________ are also subject to SCC if chlorides are present, while _________ are less susceptible.

At high temperatures, metal components can slowly and continuously deform under load below the yield stress. This time dependent deformation of stressed components is known as __________.

Caustic embrittlement is a form of stress corrosion cracking characterized by surface-initiated cracks that occur in piping and equipment exposed to caustic, primarily adjacent to non-PWHT welds. Which of the following materials is the most resistant to embrittlement?

A condition where steel loses strength due to the removal of carbon and carbides leaving only an iron matrix is called decarburization. This occurs during high temperatures, during PWHT and from exposure to fires. Which of the following materials is not affected by this?

_______ is the primary alloying agent that affects resistance to oxidation.

Which of the following materials is not susceptible to Cl SCC?

Which of these cast irons are not susceptible to graphitic corrosion?

The amplitude and frequency of vibration as well as the _________ of the components are critical factors in vibration-induced fatigue.

Start-up and shutdown of equipment increase the susceptibility of thermal fatigue. There is no set limit on temperature swings; however, as a practical rule, cracking may be suspected if the temperature swing exceeds about _________.

With decarburization, the decarburized layer will be free of carbide phases. Carbon steel will be ______.

The major factors affecting high temperature sulfidation are the temperature, the presence of hydrogen, the H₂S concentration and the ________.

Which of the following materials are the least susceptible to caustic embrittlement?

All piping and equipment exposed to HF acid at any concentration with hardness levels above the recommended limit (237 BHN) are subject to _________.

300 series stainless steel heater tubes in an oil-burning furnace in the hydrocracker began to leak and the furnace was brought down. What was the probable cause of the cracking?

With CO₂ corrosion, increasing temperatures _________ corrosion rates up to the point where CO₂ is vaporized.

General or localized corrosion of carbon steels and other metals caused by dissolved salts, gases, organic compounds or microbiological activities is called ________.

Refractory anchor material must be compatible with the _________ of the base metal

Nitriding is usually confined to the surface of most components and will have a dull, ______ appearance. In more advanced stages, the material will exhibit very hard surface hardness.

With sulfuric acid corrosion, mix points with _______ cause heat to be released and high corrosion rates can occur where the acid becomes diluted.

A brittle fracture:

Risk Based Inspection

Filters

300 Series SS, 400 Series SS and duplex SS are subject to pitting and localized corrosion under insulation. In addition, __ are also subject to SCC if chlorides are present, while _ are less susceptible.