API-571 Dumps API-571 Braindumps API-571 Real Questions API-571 Practice Test API-571 Actual Questions API API-571 Corrosion and Materials Professional https://killexams.com/pass4sure/exam-detail/API-571 Question: 285 With steam blanketing, failure occurs as a result of _________ in the tube from the internal steam pressure at the elevated temperature. A . Stress risers B . Velocity C . Hoop stress D . Tensile strength Answer: C Question: 286 Carbon dioxide corrosion results when COČ dissolves in water to form _________ acid. A . Sulfuric B . Hydrochloric C . Carbonic D . None of the above Answer: C Question: 287 Protection in a boiler from boiler feed water corrosion is accomplished by: A . Injecting chlorines to kill microbiological bugs. B . Injecting caustic to lower the ph to < 4.0. C . Lowering solids content in boiler feed water to less than 50 ppm. D . Maintaining a protective corrosion layer of magnetite (Fe3O4). Answer: D Question: 288 Susceptibility to hydrogen stress cracking __________ with __________ hardness. A . Increases, increasing B . Decreases, increasing C . Decreases, Decreasing D . Both A and C Answer: D Question: 289 With sour water corrosion, corrosion increases with __________ NH4HS concentration and __________ velocity. A . Increasing, Decreasing B . Increasing, Increasing C . Decreasing, Decreasing D . Decreasing, Increasing Answer: B Question: 290 _________ is the main concern during start-up, shutdown and/or hydro testing for equipment/piping operating at elevated temperatures. This event can also occur in an auto refrigeration event in units processing light hydrocarbons. A . Stress fracture B . Carburization C . Spheroidization D . Brittle fracture Answer: D Question: 291 With creep, increased stress due to loss in thickness from corrosion will ________ time to failure. A . Increase B . Reduce C . Not affect D . None of the above Answer: B Question: 292 With hydrofluoric acid corrosion, corrosion rates increase with _______ temperatures and ______ HF concentrations. A . Increasing, decreasing B . Decreasing, increasing C . Increasing, increasing D . Decreasing, decreasing Answer: A Question: 293 To prevent hydrogen embrittlement, use lower strength steels and _________ to temper the microstructure, improve ductility and reduce residual stresses. A . Alloys B . Preheat C . PWHT D . All of the above Answer: C Question: 294 The level of creep damage is a function of the material and the coincident _________ level at which the creep deformation occurs. A . Pressure/Temperature B . Pressure/Stress C . Temperature/Stress D . None of the above Answer: C Question: 295 A form of corrosion that can occur at the junction of dissimilar metals when they are joined together in a suitable electrolyte is __________. A . Galvanic corrosion B . Anodic corrosion C . Cathodic corrosion D . All of the above Answer: A Question: 296 The primary factors affecting high temperature oxidation are metal temperature and _______. A . Pressure B . Alloy composition C . Stress D . Oxygen Answer: B Question: 297 Sulfuric acid promotes general and localized corrosion of carbon steel. Carbon steel heat affected zones may experience severe corrosion. Acid concentration, temperature, alloy content and ____________ are critical factors affecting sulfuric acid corrosion. A . Pressure B . Stress C . Velocity D . Ductility Answer: C Question: 298 Which of the following materials is affected by high temperature corrosion? A . Carbon steel B . 300 Series SS C . 400 Series SS D . All of the above Answer: D Question: 299 Many thermal fatigue cracks are filled with: A . chlorides. B . hydroslime. C . oxides. D . sulfides. Answer: C Question: 300 Ammonium chloride corrosion is the general or localized corrosion, often pitting, normally occurring under ammonium chloride or amine salt deposits. All commonly used materials are susceptible to ammonium chloride corrosion. A small amount of _________ can lead to very aggressive corrosion. A . Ammonium chloride B . Amine C . Water D . Salt Answer: C 6$03/( 48(67,216 7KHVH TXHVWLRQV DUH IRU GHPR SXUSRVH RQO\ )XOO YHUVLRQ LV XS WR GDWH DQG FRQWDLQV DFWXDO TXHVWLRQV DQG DQVZHUV .LOOH[DPV FRP LV DQ RQOLQH SODWIRUP WKDW RIIHUV D ZLGH UDQJH RI VHUYLFHV UHODWHG WR FHUWLILFDWLRQ H[DP SUHSDUDWLRQ 7KH SODWIRUP SURYLGHV DFWXDO TXHVWLRQV H[DP GXPSV DQG SUDFWLFH WHVWV WR KHOS LQGLYLGXDOV SUHSDUH IRU YDULRXV FHUWLILFDWLRQ H[DPV ZLWK FRQILGHQFH +HUH DUH VRPH NH\ IHDWXUHV DQG VHUYLFHV RIIHUHG E\ .LOOH[DPV FRP $FWXDO ([DP 4XHVWLRQV .LOOH[DPV FRP SURYLGHV DFWXDO H[DP TXHVWLRQV WKDW DUH H[SHULHQFHG LQ WHVW FHQWHUV 7KHVH TXHVWLRQV DUH XSGDWHG UHJXODUO\ WR HQVXUH WKH\ DUH XS WR GDWH DQG UHOHYDQW WR WKH ODWHVW H[DP V\OODEXV %\ VWXG\LQJ WKHVH DFWXDO TXHVWLRQV FDQGLGDWHV FDQ IDPLOLDUL]H WKHPVHOYHV ZLWK WKH FRQWHQW DQG IRUPDW RI WKH UHDO H[DP ([DP 'XPSV .LOOH[DPV FRP RIIHUV H[DP GXPSV LQ 3') IRUPDW 7KHVH GXPSV FRQWDLQ D FRPSUHKHQVLYH FROOHFWLRQ RI TXHVWLRQV DQG DQVZHUV WKDW FRYHU WKH H[DP WRSLFV %\ XVLQJ WKHVH GXPSV FDQGLGDWHV FDQ HQKDQFH WKHLU NQRZOHGJH DQG LPSURYH WKHLU FKDQFHV RI VXFFHVV LQ WKH FHUWLILFDWLRQ H[DP 3UDFWLFH 7HVWV .LOOH[DPV FRP SURYLGHV SUDFWLFH WHVWV WKURXJK WKHLU GHVNWRS 9&( H[DP VLPXODWRU DQG RQOLQH WHVW HQJLQH 7KHVH SUDFWLFH WHVWV VLPXODWH WKH UHDO H[DP HQYLURQPHQW DQG KHOS FDQGLGDWHV DVVHVV WKHLU UHDGLQHVV IRU WKH DFWXDO H[DP 7KH SUDFWLFH WHVWV FRYHU D ZLGH UDQJH RI TXHVWLRQV DQG HQDEOH FDQGLGDWHV WR LGHQWLI\ WKHLU VWUHQJWKV DQG ZHDNQHVVHV *XDUDQWHHG 6XFFHVV .LOOH[DPV FRP RIIHUV D VXFFHVV JXDUDQWHH ZLWK WKHLU H[DP GXPSV 7KH\ FODLP WKDW E\ XVLQJ WKHLU PDWHULDOV FDQGLGDWHV ZLOO SDVV WKHLU H[DPV RQ WKH ILUVW DWWHPSW RU WKH\ ZLOO UHIXQG WKH SXUFKDVH SULFH 7KLV JXDUDQWHH SURYLGHV DVVXUDQFH DQG FRQILGHQFH WR LQGLYLGXDOV SUHSDULQJ IRU FHUWLILFDWLRQ H[DPV 8SGDWHG &RQWHQW .LOOH[DPV FRP UHJXODUO\ XSGDWHV LWV TXHVWLRQ EDQN DQG H[DP GXPSV WR HQVXUH WKDW WKH\ DUH FXUUHQW DQG UHIOHFW WKH ODWHVW FKDQJHV LQ WKH H[DP V\OODEXV 7KLV KHOSV FDQGLGDWHV VWD\ XS WR GDWH ZLWK WKH H[DP FRQWHQW DQG LQFUHDVHV WKHLU FKDQFHV RI VXFFHVV 7HFKQLFDO 6XSSRUW .LOOH[DPV FRP SURYLGHV IUHH [ WHFKQLFDO VXSSRUW WR DVVLVW FDQGLGDWHV ZLWK DQ\ TXHULHV RU LVVXHV WKH\ PD\ HQFRXQWHU ZKLOH XVLQJ WKHLU VHUYLFHV 7KHLU FHUWLILHG H[SHUWV DUH DYDLODEOH WR SURYLGH JXLGDQFH DQG KHOS FDQGLGDWHV WKURXJKRXW WKHLU H[DP SUHSDUDWLRQ MRXUQH\ 'PS .PSF FYBNT WJTJU IUUQT LJMMFYBNT DPN WFOEPST FYBN MJTU .LOO \RXU H[DP DW )LUVW $WWHPSW *XDUDQWHHG