Dissimilar weld metal cracking occurs because the coefficients of thermal expansion between ferritic steels and 300 Series stainless steels differ by ________ or more.
A. 10%Characteristic stress corrosion cracks have many branches and may be visually detectable by a __________ appearance on the surface.
A. Tree shapedWhich of the following inspection methods should primarily be used to identify naphthenic acid corrosion (NAC) in a piping system?
A. Radiographic testing followed by ultrasonic measurementsSteam blanketing is when the heat flow balance is disturbed; individual bubbles join to form a steam blanket, a condition known as Departure from Nucleate Boiling (DNB). Once a steam blanket forms, tube rupture can occur rapidly, as a result of _________.
A. Thermal fatigueWeld heat affected zone graphitization is most frequently found in the heataffected zone adjacent to welds in a narrow band, corresponding to the low temperature edge of the heat affected zone, In multi-pass welded butt joints, these zones overlap each other covering the entire cross section. Because of its appearance, this type of graphitization is called________.
A. Half-moonWhich of the following materials is susceptible to CO?corrosion?
A. Carbon steelDamage due to __________ is not visible and can only be observed by metallographic examination.
A. Galvanic corrosionA carbon steel bundle from the overhead condenser in the crude unit operates at 300?F and is in hydrochloric acid service. It showed severe pitting type corrosion when pulled for inspection. What type of material would be best suited for this service?
A. 5Cr-0.5MoA form of mechanical fatigue in which cracks are produced as a result of dynamic loadings is _______.
A. SpheroidizationAt a given pressure, the H睸 concentration in the sour water _________ as temperature _________.
A. Increases, increasesNowadays, the certification exams become more and more important and required by more and more enterprises when applying for a job. But how to prepare for the exam effectively? How to prepare for the exam in a short time with less efforts? How to get a ideal result and how to find the most reliable resources? Here on Vcedump.com, you will find all the answers. Vcedump.com provide not only API exam questions, answers and explanations but also complete assistance on your exam preparation and certification application. If you are confused on your API-571 exam preparations and API certification application, do not hesitate to visit our Vcedump.com to find your solutions here.