API 571 Practice Exams Questions And Guaranteed Correct Answers

Three of the steels listed below are susceptible to brittle fracture. Pick the one that is not. a. Carbon steel. b. 300 series of stainless steels. c. Low alloy steel. d. 400 series of stainless steels - correct answers 300 series of stainless steels. What year did the ASME boiler and Pressure Vessel Code, Section VIII, Division 1 begin to require thoughness as a criteria for vessels operating at cold temperatures? a. 1987 b. 1942 c. 1995 d.1963 - correct answers 1987 Thermal fatigue cracking has been a major problem in: a. depropanizer vessels b. coke drum shells c. boiler feed water tanks d. catalyst storage drums - correct answers coke drum shells Since cracking is usually surface connected, effective methods of inspection are: a. WFMT and LT. b. ET, and AE. c. VT, MT and PT. d. AET, ET. and RT. - correct answers VT, MT and PT. Equipment that is exposed to moving fluids an/or catalyst are subject to erosion and erosion-corrosion. What unit is most often damaged by gas borne catalyst particles? a. Desalting Unit b. Motor Oil Unit c. Crude and Vacuum Unit d. Fluid Catalytic Cracker - correct answers Fluid Catalytic Cracker What type of unit suffers severe erosion-corrosion due to exposure to naphthenic acids in some crude oil? a. Catalytic Reformer Reactor piping b. FCCU Fractionator overhead lines c. Hydroprocessing reactor effluent piping d. Crude and Vacuum unit piping and vessels - correct answers Crude and Vacuum unit piping and vessels Erosion-corrosion is best controlled by using ________ and/or altering the process environment to reduce corrosivity? a. Corrosion inhibitors b. Wear plates c. Hard-facing by weld overlays d. More corrosion-resistant alloys - correct answers More corrosion-resistant alloys What type of material offers improved resistance to naphthenic acid corrosion? a. Higher chrome containing alloys b. Higher nickel containing alloys c. Higher molybdenum containing alloys d. Higher columbium containing alloys - correct answers Higher molybdenum containing alloys Inspection methods for detecting the extent of metal loss due to erosion and erosion-corrosion are: a. AE, MT and ET b. VT, UT and RT c. PT, ET and AET d. LT, ET and WFMT - correct answers VT, UT and RT What type of on stream inspection method can detect the loss of refractory on an operating unit? a. Visual inspection b. Infrared scan c. Ultrasonic scan d. Eddy Current - correct answers Infrared scan What is the typical erosion-corrosion rate in mpy on Monel immersed in seawater flume with the seawater traveling over it at 4fps? a. 0.2 mpy b. 0.2 mpy c. 1 mpy d. 0.3 mpy - correct answers 0.2 mpy Three types of equipment with mechanical loading that are affected by mechanical fatigue cracking are listed below. One is not correct, pick the incorrect item. a. Rotating shafts on centrifugal pumps that have stress concentrations due to key ways. b. Small diameter piping that vibrates because of adjacent equipment. c. Large, heavy cast steel compressor plates. d. High pressure drop control valves or steam reducing stations that have serious vibration problems. - correct answers Large, heavy cast steel compressor plates. NDE techniques such as _______, _______ and ______ can be used to detect fatigue cracks at known areas of stress concentration. a. ET, AE, LT b. PT, MT, SWUT c. AET, WFMT, RFEC d. RT, PMI, FMR - correct answers PT, MT, SWUT If a bare carbon steel line is located next to a cooling tower with mist from the tower on the line, what would you expect to happen if the pipe is only protected by poorly coated aluminum paint? a. Severe external oxidation due to atmospheric conditions. b. The paint will protect the line and no corrosion will occur. c. Minor atmospheric corrosion could be expected. d. Nothing will happen. The conditions for corrosion are not present. - correct answers Severe external oxidation due to atmospheric conditions. If insulation has chlorides in it to cause CUI related to stress corrosion cracking, what type material or equipment would be the most susceptible to damage? a. 400 series SS b. 300 Series SS c. Carbon and low alloy steels. d. Duplex SS - correct answers 300 Series SS For CUI, which of the following items would not be of concern? a. Insulated piping operating at 350°F b. Areas with damaged insulation c. Deadlegs d. Equipment with leaking steam tracing - correct answers Insulated piping operating at 350°F A small pressure vessel made of 316 SS is to be insulated. It operates at 220°F in an area subject to a lot of water vapor. The inspector checks the insulation that is to be used and finds that it contains chlorides. What should he do? a. Stop the installation of the insulation and make arrangements to have low/no chloride insulation installed b. Make sure the area is covered during the installation of the insulation to avoid moisture being trapped c. Nothing is required, the insulation is satisfactory d. Heat the vessel to 300°F during the installation of the insulation - correct answers Stop the installation of the insulation and make arrangements to have low/no chloride insulation installed If wet insulation is suspected on a vessel or if damaged and missing insulation is suspected beneath an aluminum jacket on a vessel, what inspection method would be best to find the locations? a. Strip the insulation completely and renew it b. Infrared thermography c. Radiograph the equipment d. Magnetic flux leakage - correct answers Infrared thermography Sulfur compounds react with carbon steel in high temperature environments. This reaction causes corrosion., The presence of __________ accelerates the corrosion. a. Water b. Carbon dioxide c. Oxygen d. Hydrogen - correct answers Hydrogen