/when welding equiment from high-alloy austenitic, it has to keep the chemical composition of the weld for a while, to make sure that the weld hasReliability corrosionReliability of mechanic strengthworking conditions of equiment /who can do welding work on a pressure vesselanyonelicenced welderweld inspectordesign engineer/in welding process,penetration zone is defined asheat affected zonetransformation zonecoarse-grained HAZ/following failure forms are usual respectively for an internal pressure vesselbuckingleakagelarge plastic deformation or rupturebursting/which failures are to consider for a rotary kilnkiln shell warpinglength of kilnelongation the length of kilnpressure/a common use of ultrasonic testing isdetecting of sub-surface indicationsdetermination of the test piece ductilitycommunicationscleaning/to calculate the thickness of the glazed reactor made of compound materials(caremic and steel),which factor is to be considered for the calculationMAWP of reactorthe strength of both materialsallowable stress of ceramicthe strain of both materials/the roles of transverse baffles of a heat exchanger areincreasing the heat transfer and avoiding the vibrationincreasing the heat transfer and avoiding the corrosionincreasing the heat transfer and guiding the flow /which is the most influent factor in the considering of piping systemtemperatureflangespressurefitting/the most important safety device on a pressure vessel isover-pressurization devicepressure regulatorventilation valvepressure gauge/if welding is done on a pressure vessel, what documention do you needpayment billrequirements and standards of national boardpurchase orderwork order/which of the follwing is a function of a developer of liquid penetrant testing methodaccentuates presence of discontinuities by causing a penetrant indication to spread out over a larger areaproviding a contrasting background for visible dye indicationsprovides capillary paths to aid the bleed out process all of them/the minimum shell thickness for carbon steel(inclusive of corrosion allowance) depends on shell diameter and is in the range of......mm for shell and tube heat exchanger3-55-1112-188-15/which are the usuful impurity elements in carbon steel areCr.MgPb.HgMn,SiCa,Mo/The structure of equipment consist from many welded sections/components, the design wl be based on: Standard dimensions of steel plates or steel tubesDimensions of components Dimension resulted from calculation plus additional value of corrosion and abrasionDimensions resulted from calculation/which of the following discontinuity types could typically be found with a liquid penetrant test? Sensitization in austenitic stainless steel Internal slag in a weldInternal slag in a casting Fatigue cracks /In the phase of design of equipment, the designer must: appoint the method of weldingchoose the welder prepare the edgeHow many statement(s) of above is (are) right?/For a 23 mm hole driled in plates to be riveted, the shank diameter of the rivet should be 19 21 23 25/The main causal producing edge stress in a vessel isEccentric loadsFalse welding formDiscontinuous structureExternal pressure/A cylindrical storage tank can have a self supported conical roof,if its diameter is less than 15-20 meters.if the thickness of the roof is more than that of the cyindrical shel. if its diameter is more than 50 meters. irrespecve of its diameter./A liquid penetrant process in which excess penetrant is removed with an organic solvent is called: Water washablePost-emulsiedsolvent removableDual method/Saddle supports are used for supporting vessels.horizontal cylindricaltal verucalthick sphericalthick waled vertical/which of the following is the most desirable method of pre-cleaning a test piece prior to liquid penetrant testing?Sand blastingVapour degreasingWire brushing Emery cloth/Movement of pipeline caused by thermal expansion is compensated byguide railnone of theseexpansion jointfastening cables/The most effective NDT method for locating surface cracks in ferromagnetic materials is: Radiographic testingLiquid penetrant testingMagnetic particle testingUltrasonic testing/The circumferential (hoop) stress in a thin walled cylindrical vessel under internal pressure is pd/2tpd/3tpd/4tpd/t

/Objectives of the regulations and standardization are :Reduction of production costs Facilitating communication between operators and manufacturersIncreased reliabityHow many statement(s) of above is (are) right?/To change the direction of a pipeline , a/an is used.angeelbowunioncompensator/The hydrostatic test may be replaced by a pneumatic test?No, the hydrostatic test should be used onlyNo, hydrostatic test must be followed by a pneumatic testYes, when the hydrostatic test cannot be done.How many statement(s) of above is (are) right?/The units of Young's modulus of elasticity and are the same.forcestrainstressmodular ratio/In a thin cylindrical shell, the hoop stress is stress.radiallongitudinalcircumferential tensiecompressive/while testing with liquid penetrant, a wire brush should be used for pre-cleaning :when rust is to be removedwhen grinding burrs must be removedOnly as a last resortwhen grease and oi must be removed/Cheap buit, simple shapes, easy manufactured, correct tolerances and uses standard parts etc are features of equipment, whichcan be considered as:Ensure engineeringLogical structureEasy operationHow many statement(s) of above is (are) right?/Large process vessels operating under extreme temperature and pressure conditions are normally clad/ lined with materials likestainless steel, aluminum, nickel &its alloys, copper &its alloys and titanium. The cladding thickness is generally about.....percent of the total thickness.30 to 401 to 540 to 5010 to 20/ Rivets are generally specied by thehead diameternone of theseoveral lengthshank diameter/The necessary wall thickness for a metallic storage vessel is a function of theultimate tensile strength (or yield point) of the material and operating temperature.operating pressure.diameter of the vessel.Quaty of welder and welding/joint efciency/........shapedroof is the most commonly used roof for cylindrical storage tanks. FlatDomesphericalConical/ when steel is often added to some other metals such as chromium, nickel, molybdenum, manganese, silicon, titanium...thecharacter of the steel wl have:changes and becomes stainless steelno changesQuality reductionHow many statement(s) of above is (are) right?/Flanges are connected to pipes byscrewingal of them trueweldingbrazing, soldering/which following factors could be Indices for deciding the method of machining?1/ Technologies that fabricated materials2/ Infrastructure of worlshop3/ materialsHow many answers of above are right?/Is a container with a vacuum inside a pressure vessel?No, that is notif vacuum is deep enoughOnly in special casesYes, that is/C2H2 and 02 cyinders (containers) and hoses haveDifferent screw threadsSame screw threadsDifferent colorsHow many statement(s) of above is (are) right?/Cylindrical pressure vessels in horizontal condition is generally supported on a support.lugsaddlecraneskirt/Spherical shaped pressure vessel is considered to be the most ideal, because it canbe fabricated very easiy.be designed without wind load considerations.be supported very easilywithstand higher pressure for a given metalc shel thickness./There is a jacketed vessel. Its inner vessel is subjected to full vacuum, and its jacket is subjected to internal pressure 0.5 MPa,The working temperature is less than 100C. Determine the following parameters:The hydrostatic test pressure of the inner vessel is 0.65 MPa and the hydrostatic test pressure of lf the jacket is 0.65 MPa.The hydrostatic test pressure of the inner vessel is 0.65 MPa and the hydrostatic test pressure of the jacket is 0.75 MPa.The hydrostatic test pressure of the inner vessel is 0.75 MPa and the hydrostatic test pressure of the jacket is 0.65 MPa.The hydrostatic test pressure of the inner vessel is 0.75 MPa and the hydrostatic test pressure of the jacket is 0.75 MPa./What is the symbol of low carbon steel , which have following property : 0 =450 N/mm2CF45C45CCT 45BCT4S/The buckling tendency of compression members is always in the direction of theperpendicular to the axis of the load.axis of the load.least radius of gyration.Vlnd load./How many bolts are used for the ange?6multiple of 4multiple of 25/Lug support isthe most suitable for thick vertical vessel.same as bracket support.provided usually for vessels of much smaller height than skirt supported vessels.How many statement(s) of above is (are) right?/Wind load consideration in the design of a support can be neglected, when the vessel istall (~ 30 meters), but is full of liquid.tall (~ 30 meters) but emptyshort (5 >330How many statement(s) of above is (are) right?/Why are name plates of pressure vessel so important?a. give the informations of safetyb. for advertising purpose of suppierc. worker can recognise the name of the vesseld. It is just a decoration/Consumable electrodes used in Arc Welding is added to weld joint asa. electrodesb. ller materialc. SlagHow many statement(s) of above is (are) right?/Steel classication according to the quality area. - Carbon steelStainless steel- Alloy steelb. - Killed Steel- Rimmed Steel- semi killed steelc.- low carbon steel - medium carbon steel - high carbon steeld. common steel- high grade steel- super high grade steel/what are the expansion joint for the pressure vessel?a. Floating headb. Open ] jointc. Communicatord. compensator/Stress corrosion cracking is a failure mechanism that is caused by environment, susceptible material, and......a. hoop stressb. Torsional shear stressc. tensie stressHow many statement(s) of above is (are) right?/Main characteristics of Nickel in alloy steel are :a. Improves hardnessb. Improves strength at high Temperaturec. Increases corrosion resistanced. increases toughness at low temperaturesHow many statement(s) of above is (are) right?/To examine integral strength and seaing of a vessel, the suitable test is hydrostatic testa. hydrostatic testb. Magnetic test.c. Liquid testd. Ultrasound test/155 which plastic can be used until 250C ?a. Polypropyleneb. Polytetrauoroethylenec. Polyvinyl chlorided. Polyethylenes/155 who has the absolute competence over your pressure vessels?a. International standardb. Statec. Policed. Testing company/For a rolled cylindrical shell, the nominal diameter isa. The outer diameter of the shellb. The inner diameter of the shel.c. The design diameterd. The diameter of the midine of the shel/How many statement(s) of following statements is (are) false?a. Riveting provides a permanent fastening method.b.The joint made by overlapping of one plate over the other, and then riveng the two plates together with two rows of rivets iscalled double riveted butt joint.c. Shank diameter of the rivets should be less than the size of the hole drilled in the plate for riveting.d. The efficiency of a riveted joint is the ratio of the strength of the riveted joint to the strength of the solid plate./The plate edge preparation before welding depends on:1/ Method of welding2/ welding joint3/ Thickness of materialHow many statement(s) of above is (are) right?

/Steel classication according to the content of carbon (C/o) area. - Austenite - Martensit- Ledeburitb. - Low Carbon Steel- Medium Carbon Steel- High Carbon Steelc. - Carbon steel- Stainless steel- Aloy steeld. Mid carbon steel- rimmed steel- kied steel/The solutions to decrease thermal stress in xed-tubesheet type of heat exchanger area. Reducing difference of the temperature between tubes and the shell and welding the tubes to tubesheet.b. Increasing difference of the temperature between tubes and the shel and setting an expansion jointc. Reducing difference of the temperature between tubes and the shell and setting an expansion joint to the shel.d. setng expansion joint to the tubes/Circumferential (hoop) stress in a thin cylindrical vessel under internal pressure isa. halfb. twicec. eight timesthe longitudinal stress.d.equal to/Maximum temperature at tip of inner cone of Oxyacetylene Torch can reach toa. ~34000Cb. ~1400Cc. ~2400Cd. ~4400C/which one is the main character of austenitic steel:a. magneticb. non magneticc. non weldabled. brittle/The shear strain in a pressure vessel is zero.a. That is falseb. It depends from loadsc. That is trued. Just only under internal pressure/which following failure forms are usual respectively for a anged joint?a. bucklingc. plastic deformationb. ruptured. leakage/Stainless Steels are nickel-chromium alloys of iron witha. chromium content must be >18/ob. chromium content must be >12/oc. chromium content must be >10/od. chromium content must be >16/o/Following loads should be considered, when designing a tall vessel,a) eccentric massb) wind load, seismic loadc) Internal mass.How many statement(s) of above is (are) right?/which are the harmful elements in Carbon steel?a. S,Pb. Cr, NIc. Mn,Sid. Mb, M0/head is the strongest of all.a. Torisphericalb. Conicalc. Hemisphericald. Eiptical/Vertical storage vessels are never supported by support.a. saddleb. lugc. bracketd. skirt/Arc Welding Processes which use consumable electrode, area. Electrogas Weldingb. none of thesec. Gas Tungsten Arc weldingd. Plasma Arc Welding/Annealing and normalizing are the treatment of steel by usinga. Weldingb. Roingc. Machiningd. Heating/which are the impurity elements may make respectively carbon steel hot brittleness and cold brittleness?a. S, Pb. Si , Mnc. Ni, Mnd. Mg, Cr

/What is ASME ?a. American Science of Measure Engineersb. American Society of Mechanical Engineersc. Australian Society for Music Educationd. American Society of Mechanical Engine/In order to ensure the sealng of bolted anges, the gasket must have the good properties ofa. None of themb. Hardnessc. Adhesiond. Deformation and Resiency/pressure vessels are :a. Thinned wall vesselsb. Thick walled, Propane bottles Gas cylindersc. storage tanks, Transportable Containersd. beer bottlesHow many above staement(s) is (are) correct?/The ends of a cylindrical vessel can be closed by a head, which can be one of the four shapes. For the same thickness, choosethe one which can withstand the highest pressure.a. Flat plateb. Hemisphencalc. Torisphericald. Elipsoidal/Fields generated in ferromagnetic material with AC current are useful for locating:a. All discontinuitiesb. Subsurface discontinuitiesc. Surface cracksd. Internal porosity/Why we need to know the operation temperature (high temperature) for the design of rotary kiln?a. to calculate the thickness of shellb. to choose isolation materialc. mechanical properties of material change with temperatured. temperature relates with pressure

/Flange faces used as contact surfaces to seat the seaing gasket material must bea. Covered with rubber layerb. rough surfacesc. Oiled before setting the gasketd. Coated with a glue layer/Common limitations of use of plastics are :a. low temperatureb. high temperaturec. high pressured. corrosionHow many statement(s) of above is (are) right?/The value of Poison's ratio of steel isa. 0.27 0.3b. 0.3 - 0.4c. 0.4-0.5d. 0.1 0.2./Arc shielding material used in Submerged Arc Welding isa. Gasb. Electrode coatingc. an of thesed. granular ux/Main characteristics of Chromium in alloy steel are :a. increasing corrosion resistance, strength, hardness, wear resistance, oxidation resistanceb. increasing harden-ability temperaturec. Decreasing plasticity and toughnessd. Decreasing weld abilityHow many statement(s) of above is (are) right?/The stress corrosion cracking is caused froma. an externally applied loadb. false operationc. operatorsd. Temperature/ Oxyacetylene Welding is performed by a high temperature ame from combustion of acetylene and oxygen. It is a/ana. Fusion weldingb. AI of thesec. Solid State weldingd. Resistant welding/ which following details are not considered as shell:a. Casing wall of bag lterb. The rotor of the centrifugal sedimentationc. Body, bottom head of equipment of reaction, mass transfer, heat transfer, evaporatorHow many statement(s) of above is (are) right?/A rupture disc is provided in chemical equipments as an accessory meant fora. creating turbulence.b. avoiding leakingc. relieving excess pressure.d. enhancing mixing rate./A head comprises of straight ange section, corner torus, section and central dished section. Crown radius and knuckle radius in a head is related respectively to thea. central dished section and corner torus section.b. corner torus section and central dished section.c. central dished section and straight ange section.d. straight ange section and corner torus section./Common types of failures of pressure vessels, chemical equipments in reneries, chemical processing plants area. Faulty designb. Damage during eld fabrication and erectionc. Welding problemsd. wrong measure equipmentHow many statement(s) of above is (are) right?/what are subjects of the welding Sequence in manufacturing of chemical equipment ?a. Minimizing the weld distortionb. Getting better cooling ratesc. making a complete joint penetrationd. Showing the difficulties of manufacturingHow many statement(s) of above is (are) right?/Chemical equipment is used tin the chemical process. It a. contains only liquidb. contains gasc. contains solidsHow many statement(s) of above is (are) right?/stress affected to the joint types of tube to tube sheet is caused by a. Temperatures inside and outside of tubesb. An externaly appied loadc. False operationd. AI of them/To calculate the tensile strength of equipment , it must rst determine:a. The allowable stress of the material to making equipmentb. Manufacturing Technologyc. The technical parameters of the equipmentd. Choosing the qualied welder/A column is 15.000 mm tall with atmospheric pressure at the top and contains full water. How much pressure [kPa] is at the bottom of the tank?a. ~ 53-kPab. ~ 150 kPac. 0-kPad. ~ 250 kPa/Cylindrical shell thickness of rotary drier is generally mm.a. 12-15b. 18-22c. 6-8d. 2-3/Maximum working pressure of a boiler is (are) :a.The maximum allowable working pressure for a vessel is the maximum pressure permissible at the bottom of the vessel in itsnormal operating position at the designated coincident temperature specied for that pressure.b.The maximum allowable working pressure for a vessel is the maximum pressure permissible at the top of the vessel in its normaloperating position at the designated coincident temperature specified for that pressure.c.the pressure that wil create stresses in the shell that equal the allowable stresses given in the material section of the codeHow many denition(s) is (are) correct?/An internal rupture caused by working steel at improper temperatures is called a:a. Forging burstb. Slag inclusionc. Lapd. Cold shut/After welding is complete, to increase the corrosion resistance of welds, it must doa. Cleaning the weld and tempering the weldb. Cleaning the weld but not removing the oxide scales because they protect the weld surface.c. none of thesed. Cleaning the weld, removing the oxide scales on the weld/Di/t of Thin-walled vessels should bea.0.2% - Alloy elements :1. *Mn 2~2.5%2. *Si Cr TI V Nb Ni Al... 0.15~0.6%b. - C >0.2%- Alloy elements :1. *Mn 1~2.5%2. *Si Cr 1': V Nb Ni Al... 0.015 ~ 0.6%c. - C