QUESTION: 33

Carbon steel is susceptible to SCC when used in ___________ service.

Hydrogen
Ammonia
High temperature
High pressure

Answer(s): B

The grain size has an important influence on the high temperature ductility and on the reheat cracking susceptibility. A ________ grain size results in _______ ductile heat affected zones, making the material more susceptible to reheat cracking.

Large, more
Small. Less
Large, Less
Small, More

Answer(s): C

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QUESTION: 35

Equipment that is temper embrittled may be susceptible to _______ during start-up and shutdown.

Creep
Thermal fatigue
Brittle fracture
Stress fatigue

Answer(s): C

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QUESTION: 36

Amine stress corrosion cracking is a term applied to the cracking of steels under the combined actions of ________ and __________ in aqueous alkanolamine systems used to remove/absorb H²S and/or CO² and their mixtures from various gas and liquid hydrocarbon streams.

Temperature, pressure
Pressure, stress
Temperature, corrosion
Tensile stress, corrosion

Answer(s): D

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QUESTION: 33

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QUESTION: 36

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