API 577 2014 Latest Questions With Correct Answers

API 577 Which of the following statements is correct? - ANS API 577 provides guidance to the API authorized inspector on welding inspection. The actual throat of a weld is best described as: - ANS The shortest distance between the weld root and the face of a fillet weld. The term "arc blow" refers to which of the following? - ANS The deflection of the arc due to magnetic forces. An autogenous weld is a weld that is best described by which of the following? - ANS A weld made without filler metal. In welding, a discontinuity is defined as: - ANS An interuption of the typical structure of a material. The heat affected zone of a weld is best described by which of the following? - ANS That portion of the base metal whose mechanical properties or microstructure have been altered by the heat of welding or thermal cutting Welding inspection includes which of the following? - ANS Visual and nondestructive examination of the welds, Review of specifications, welding procedures, and welder qualifications, Review of joint designs and cleaning procedures. Which of the following tasks are not normally performed by the inspector prior to welding? - ANS Check the appearance and size of welds. . Who is responsible for the "quality craftsmanship" of weldments? - ANS The welder. During welding operations, the inspector should: - ANS Confirm welding parameters and techniques are supported by the WPS and WPQ, Complete physical checks, visual examinations, and in process NDE, Establish a quality control and quality assurance umbrella with the welding organization. Following the completion of welding, and before the completed welds are placed in service, the inspector should: - ANS a. Verify post weld acceptance and that NDE was performed at the selected locations, Verify that post weld heat treatments and pressure testing were performed, if required, and that the results were acceptable, Audit the inspection files to identify inaccuracies and incomplete information If at any time during welding inspection the inspector discover defects or nonconformances, he/she should: - ANS The defects or nonconformances should be brought to the attention of those responsible or corrected before the work proceeds further. If ASME Section V, Article 1 is specified by the referenceing code, NDE personnel: - ANS Shall be qualified in accordance with ASNT SNT-TC-1A or ANSI/ASNT CP-189. API 577 requires that inspectors should be aware of the hazards associated with welding and take steps to avoid injury while performing inspection tasks. As a minimum, the inspector should: - ANS Follow all site safety rules and regulations. API 577 describes all but which of the following welding processes? - ANS Electro Slag Welding. Which of the following weld processes uses a flux coated electrode? - ANS SMAW. Which of the following weld processes uses a non consumable electrode? - ANS GMAW. Which of the following weld processes uses a flux filled tubular electrode? - ANS FCAW. Which of the following is not an advantage of SMAW? - ANS The deposition rate is higher than for GMAW or SAW. Which of the following is not an advantage of GTAW? - ANS GTAW is tolerant of contamination of the base metal or filler metal. Which of the following is not a mode of metal transfer for gas metal arc welding? - ANS Resistance Transfer. Which of the following modes of metal transfer for the GMAW process uses the highest energy? - ANS Spray Transfer. Which of the following modes of metal transfer for the GMAW process uses the lowest energy? - ANS Short Circuiting Transfer. Which of the following is not an advantage of the GMAW process? - ANS Deep penetration when using the short circuiting metal transfer mode. Which of the following is not an advantage of the FCAW welding process? - ANS The equipment is less complex and costly than for SMAW. Which of the following is not an advantage of SAW? - ANS The weld is highly visible during welding. SW is typically used for which of the following applications? - ANS Attaching studs and insulation pins to tanks and pressure vessels. The purpose of the WPS is: - ANS To provide direction to the welder when making production welds to code requirements. The purpose of the PQR is: - ANS To record the welding data and variables used to weld a test coupon. The purpose of the WPQ is: - ANS The establish that the welder is capable of making a quality weld. The WPS must address which of the following? - ANS Essential variables, Non essential variables, Supplementary essential variable, when notch toughness testing is required. Under the ASME code, an essential variable is which of the following? - ANS A variable which affects the mechanical properties of the weld if changed beyond the range permitted. Under the ASME code, a non essential variable is which of the following? - ANS A variable which does not affect the mechanical properties of the weld. Under the ASME code, a supplementary essential variable is which of the following? - ANS A variable that applies on if notch toughness testing is required by the referencing code section. Which of the following are required to be addressed on the WPS? - ANS The supporting PQR, The welding process, The name of the welder making the qualification test coupon. Which of the following is not required to be recorded on the WPS? - ANS The name of the welder making the qualification test coupon. To whom shall the WPS be available? - ANS The inspector and welder. The PQR must address, at a minimum, which of the following items? - ANS Essential and supplementary essential variables, when notch toughness testing is required. Which of the following may be used to qualify a welding procedure? - ANS Mechanical tests. To whom shall the PQR be available? - ANS The inspector. Which of the following require a certification signature and date? - ANS PQR and WPQ. What does a P number represent in reference to ASME Section IX? - ANS Usability characteristics which fundamentally determine the ability of welders to make satisfactory welds with a given process and filler metal.. What does an F number represent in reference to ASME Section IX? - ANS Usability characteristics which fundamentally determine the ability of welders to make satisfactory welds with a given process and filler metal. What does an A number represent in reference to ASME Section IX? - ANS The chemical composition of the deposited filler metal. What purpose does the AWS classification of filler metals serve? - ANS To identify the filler material. Which of the following are considerations when selecting a filler metal? - ANS Chemical composition and tensile strength, The effect of dilution from the base metal and hardenability, Susceptibility to hot cracking and corrosion resistance. Which of the following filler materials are particularly susceptible to moisture pickup? - ANS Coatings on low hydrogen and stainless steel electrode. To reduce exposure to moisture, coated filler material should: - ANS Be stored in a warm holding oven after removal from the manufacturer's packaging, Not be stored in an oven where food is kept or cooked, Not be stored in an oven where higher hydrogen electrode is stored or damp electrode is being reconditioned. What is the purpose of welder performance qualification? - ANS To demonstrate the welder's ability to deposit sound weld metal. Which of the following may be used to qualify a welder? - ANS Mechanical tests, Radiography of a test coupon, Radiography of the first production weld Which of the following is not required on a welders performance qualification? - ANS Nonessential variables. If radiographic examination is used to qualify a welder, the minimum length of coupon to be examined is: - ANS 6". When does a welder's performance qualification expire? - ANS When he does not use a welding process for six months or more, When there is reason to question his ability to make sound welds, When his employment with the employer who qualified him is terminated. Which of the following is not considered a nondestructive examination? - ANS Tensile testing. Which of the following discontinuities would you expect to find in the base metal? - ANS Lamination. Which of the following NDE techniques is not suitable for detecting cracking in a 300 series stainless steel weld? - ANS MT. Which of the following discontinuities is not typically associated with austennitic stainless steels? - ANS Hydrogen cracking. Which of the following maybe be used by the inspector to identify materials used in welded construction? - ANS Certified Mill Test Report, Reviewing stamps and markings on the materials, PMI testing. Which of the following is the most extensively used NDE technique for welds? - ANS VT. Which of the following best describes the requirements for conducting a "Direct Visual Examination"? - ANS The eye must be within 6" to 24" and at an angle not less than 30 degrees Remote visual examination is: - ANS Conducted using a borescope, telescope, or camera. Which Article of ASME Section V addresses visual examination? - ANS Article 9. In accordance with Article 9 of ASME Section 9, how often must visual examination personnel be subject to a vision test? - ANS Annually. In accordance with ASME Section V Article 9, what is the minimum light intensity required for performing a visual examination? - ANS 100 foot candles or 1000 lux Magnetic particle examination is used for locating which of the following discontinuities? - ANS Surface and near surface. Which of the following statements regarding magnetic particle testing is false? - ANS The best results are obtained when the lines of magnetic flux are oriented parallel to the discontinuity. When performing magnetic particle examinations, the best sensitivity is obtained when using which of the following? - ANS Fluorescent particles. Which of the following NDE techniques requires the least amount of surface preparation? - ANS ACFM. ACFM can be used at temperatures up to: - ANS 900 F. Liquid penetrant examination is used for locating which of the following discontinuities? - ANS Surface Which of the following are the two general liquid penetrant techniques? - ANS Color contrast and fluorescent. Which of the following is not a liquid penetrant system? - ANS High temperature. Whish Article of ASME Section V addresses liquid penetrant testing? - ANS Article 6. Which of the following NDE techniques has limited use in weld inspection? - ANS Eddy current examination is used for locating which of the following discontinuities? - ANS Surface and near surface. Eddy current testing works on which of the following types of materials? - ANS Electrically conductive Radiographic examination is used for locating which of the following types of discontinuities? - ANS Surface, sub-surface, and opposite surface. Whish Article of ASME Section V addresses radiographic testing? - ANS Article 2. How many wires are contained within a wire type image quality indicator as used in radiographic testing? - ANS 6. How many holes are there in a hole type image quality indicator? - ANS 3. A hole type image quality indicator as used in radiography is: - ANS Normally 2% - 4% of the thickness of the object being radiographed. Image quality indicators used in weld inspection are selected based upon which of the following? - ANS The thickness of the base metal plus weld reinforcement. Which of the following may be used for performing radiography? - ANS Iridium 192, Cobalt 60, X-ray machines Iridium 192 is normally used for radiography of steel with a thickness range of: - ANS 25" to 3". Cobalt 60 is normally used for radiography of steel with a thickness range of: - ANS 1.5" to 7". Prior to performing radiography: - ANS Weld ripples or other irregularities that can mask or be confused with the image of a discontinuity should be removed to the degree necessary. Which of the following radiographic techniques is the most effective? - ANS Single wall technique. Which of the following best describes the single wall technique for performing radiography? - ANS The radiation beam is positioned so that the radiation passes through a single thickness of material and the film is in contact with the surface opposite the source side. Which of the following best describes the superimposed technique for performing radiography? - ANS The radiation is directed perpendicular to the weld and passes through two walls and both walls are viewed for acceptance. Which of the following best describes the double wall exposure ellipse technique for performing radiography? - ANS The radiation is offset from the weld ceterline and passes through two walls and both walls are viewed for acceptance. Which of the following best describes the double wall exposure, single wall viewing single wall technique for performing radiography? - ANS The radiation passes through two walls and only the material on the film side wall is viewed for acceptance. A radiograph is rejectable when: - ANS Any blemishes in the area of interest are present on the film, The transmitted density is outside the range of 1.8 to 4.0 for X-ray or 2.0 to 4.0 for Gamma ray, A light image of a B appears on a darker background. What is the purpose of the lead letter "B" that is attached to the back of the film cassette when performing radiography? - ANS To indicate if backscatter radiation is exposing the film. Which of the following is cause for rejecting a radiograph? - ANS A light image of a "B" on a darker background. Ultrasonic examination is used for locating which of the following types of discontinuities? - ANS Surface, sub-surface, and opposite surface. Straight beam ultrasonic techniques are used for which of the following? - ANS Thickness measurements. Angle beam ultrasonic techniques are used for which of the following? - ANS Identification of flaws in welds, Flaw sizing, Location of through thickness cracks in base metals. Which Article of ASME Section V pertains to the general requirements for ultrasonic examinations? - ANS Article 4. When should calibration checks be performed when conducting an ultrasonic inspection in accordance with ASME Section V? - ANS Before conducting the examination, After conducting the examination, After any change in the examiner, cabling, or search unit. When calibrating for an ultrasonic examination, the temperature of the calibration standard should be within how many degrees of the test object? - ANS 25 degrees. When performing an ultrasonic examination of a weld, how much overlap is required with each pass of the transducer? - ANS 10% What is the maximum scanning speed during the ultrasonic examination of a weld? - ANS 6 inches per second, unless a higher scanning speed is verified during calibration. When performing an angle beam inspection of a weld, which of the following is required? - ANS All scan surfaces must be free of weld spatter, surface irregularities and foreign matter, A straight beam examination must be performed adjacent to the weld prior to the angle beam examination, The angle beam examination must be performed in a manner that locates discontinuities oriented both parallel and transverse to the weld. Which of the following UT methods is very effective for sizing flaws that are open to the ID or OD surface and are shallow to mid wall? - ANS Tip diffraction. Which of the following UT methods is very effective for sizing flaws that are open to the ID surface in the mid wall region, 30% to 60% through wall depth? - ANS Bimodal. Hardness testing performed as part of a PQR uses which type of equipment? - ANS Laboratory equipment. How long is a pressure test required to be held? - ANS Long enough for a thorough visual inspection, typically at least 30 minutes. Which Article of ASME Section V addresses the requirements for leak testing? - ANS Article 10. How long are weld inspection reports usually maintained? - ANS For the life of the weld or part being inspected. Which of the following statements as regards metallurgy is false? - ANS Metals in a molten state maintain an orderly arrangement of atoms. Small grain size in metals: - ANS Increase strength and toughness. Steels described as "killed" or "fully killed" undergo which of the following treatments during processing? - ANS The use of an oxygen scavenger, such as aluminum is added to the melt. Which of the following best describes the "Heat Affected Zone"? - ANS That portion of the base metal that is not melted, but whose mechanical properties or microstructure have been altered. For carbon steels, the HAZ includes those regions heated to greater than which of the following temperatures? - ANS 1350 F. Which of the following is not considered to be a "physical property" in reference to metals? - ANS Tensile strength. The tensile strength of a metal is best defined by which of the following? - ANS The maximum stress in a metal before fracture occurs. The yield strength of a metal is best defined by which of the following? - ANS The maximum stress in a metal before permanent deformation occurs. Strain in a metal is best defined by which of the following? - ANS The amount of deformation of a metal. The yield strength of a metal is best defined by which of the following? - ANS The maximum stress in a metal before permanent deformation occurs. The hardness of a metal is best defined by which of the following? - ANS The resistance to plastic deformation by indentation. The toughness of a metal is best defined by which of the following? - ANS The ability of a metal to absorb shock and deform plastically without fracture. The primary purpose for preheating carbon and low alloy steels is best described by which of the following? - ANS Reduce the tendency for hydrogen induced delayed cracking. Preheating should be applied and extend at least how many inches on either side of the weld? - ANS 2". When making a weld comprised of two dissimilar base metals for which there is a code required minimum preheat temperature, which of the following statements is correct? - ANS The higher of the two preheat temperatures typically governs. The primary reason for performing post weld heat treatment is which of the following? - ANS To relieve residual stresses in a welded fabrication. Why is hardening of the weld and base metal HAZ considered important? - ANS Because of hydrogen assisted cracking in carbon and low alloy steels. Which of the following statements regarding carbon as an alloying agent in steel is not true? - ANS Higher carbon content decreases susceptibility to delayed cracking problems from hydrogen. When welding austenitic stainless steels, what is the minimum amount of ferrite required to prevent solidification cracking? - ANS 5% to 20%. Carbide precipitation can occur in non stabilized grades of austenitic stainless steels if held within which of the following temperature ranges for a long enough period of time? - ANS 800 F to 1650 F. Carbide precipitation in austenitic stainless steels is unfavorable for which of the following reasons? - ANS Loss of corrosion resistance. Which of the following are the two primary concerns when welding on in service piping and equipment? - ANS Burn through and cracking. When welding on in service equipment, when should extra low hydrogen electrodes be used? - ANS When the carbon equivalent is greater than .43%, When welding on cold worked parts, When welding on high strength materials or areas with high restraint. When welding on liquid piping systems in service, what is the range of flow rates that shall be maintained? - ANS 1.3 to 4 feet per second. When welding on a piping system in gas or vapor service, what is the minimum and maximum flow rates that are permissible? - ANS 1.3 feet per second minimum, there is no maximum provide preheat can be maintained. When welding on equipment in service less than .25" thick, the first weld pass should be made with what size electrode? - ANS 3/32" or smaller. When making the first weld pass on equipment in service, what type of technique should be avoided? - ANS Weave beads. When qualifying a welder on GMAW-S under the requirements of ASME Section IX, which of the following statements is true? - ANS The welder may qualify by mechanical testing of a test coupon. When qualifying a welding procedure for GMAW-S under the requirements of ASME Section IX, which of the following statements is true? - ANS The maximum base metal thickness is 1.1 times the coupon thickness for coupons less than .5" thick.