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Ammonium chloride salts may be whitish, greenish or _________.
Ammonium chloride salts may be whitish, greenish or _________.A . ReddishB . BrownishC . YellowishD . BluishView AnswerAnswer: B
Geometry, stress level, number of cycles and _________ are the predominate factors in determining the fatigue resistance of a component.
Geometry, stress level, number of cycles and _________ are the predominate factors in determining the fatigue resistance of a component.A . TemperatureB . Material propertiesC . PressureD . VelocityView AnswerAnswer: B
Inspection for wet H2S damage generally focuses on _____ and ______.
Inspection for wet H2S damage generally focuses on _____ and ______.A . Weld seamsB . NozzlesC . TraysD . Down comersE . A and BView AnswerAnswer: E
Which of the following materials are susceptible to polythionic acid SCC?
Which of the following materials are susceptible to polythionic acid SCC?A . 300 Series SSB . Alloy 600C . Alloy 800D . All of the aboveView AnswerAnswer: D
Cracking susceptibility increases with __________ pH and carbonate concentration.
Cracking susceptibility increases with __________ pH and carbonate concentration.A . IncreasingB . DecreasingC . LowD . HighView AnswerAnswer: A
What method is most used to assure boiler feed water corrosion is not occurring?
What method is most used to assure boiler feed water corrosion is not occurring?A . Spot UT readings at turbulent areasB . Profile RT at turbulent areasC . Profile RT at stagnant areasD . Laboratory analysis of boiler feedwaterView AnswerAnswer: D
SCC generally occurs below about _______.
SCC generally occurs below about _______.A . 150º FB . 180º FC . 210º FD . 240º FView AnswerAnswer: B
What structure is 304 stainless steel?
What structure is 304 stainless steel?A . MartensiticB . AusteniticC . DuplexD . FerriticView AnswerAnswer: B
In order to minimize and prevent amine SCC, PWHT all carbon steel welds in accordance with API RP _____.
In order to minimize and prevent amine SCC, PWHT all carbon steel welds in accordance with API RP _____.A . 751B . 912C . 510D . 945View AnswerAnswer: D
Oxidation of carbon steel begins to become significant above _________.
Oxidation of carbon steel begins to become significant above _________.A . 800º FB . 900º FC . 1000º FD . 1100º FView AnswerAnswer: C
