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API 653 Exam Prep Closed Book 2024
Questions & Answers | 100% Correct |
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API 653 defines a "Storage tank engineer" as: A) A registered professional engineer in structural steel fabrication B) Person or organization who is knowledgeable and experienced in the engineering disciplines associated with evaluating the integrity and reliability of aboveground storage tanks C) the engineering department of a contractor who makes repairs to aboveground storage tanks D) A professional engineer who is also an authorized API 653 inspector - ✔✔B Similar service is means of estimating corrosion rates that: A) Is Seldom used as a means of scheduling internal inspection intervals B) Ignores environmental factors in the determination of corrosion rates C) May be used in addition to or in lieu of actual measurement of corrosion rates D) Is generally considered as the best methodology for establishing the inspection intervals - ✔✔C Controlled Deposition welding methods, in lieu of PWHT, is limited to: A) P-1 materials B) P-1 and P-3 Materials only C) P-1, P3, and P4 materials only D) P-5A materials - ✔✔C Inspection hold points, for tank reconstruction, shall be designated by: A) The authorized inspector B) An engineer experienced in storage tank design C) Agreement between tank owner/user and reconstruction contractor D) Agreement between and engineer and the authorized - ✔✔A
All repair and alteration work shall be approved at all designated hold points and after completion: A) Need not be approved if approved will delay work progress B) By the repair organization of the repairs were done according to the specified repair and/or alteration procedures C) By the authorized inspector or experienced storage tank engineer D) By the authorized inspector only - ✔✔C Alterations to storage tanks, which comply with API 650, must be authorized by: A) The owner/user B) The storage tank engineer C) The authorized inspector D) The repair organization - ✔✔B A record of non-essential variables used during welding of the test coupon is: A) Optional on the PQR B) Optional on the WPS C) Required on the PQR D) Required on the WPQ - ✔✔A Cracks is the shell to bottom weld: A) Shall be evaluated per the "As built" Standard B) Shall be removed C) Shall be evaluated on a case by case basis D) Shall be evaluated per API 579 - ✔✔B What welding process is most widely used in the repair of process equipment? A) GMAW B) GTAW
API Publication 2201 on hot tapping and in-service welding covers: A) Welding requirements B) technical aspects C) Inspection requirements D) Safety aspects - ✔✔D A repair is completed on a nozzle that was originally postweld heat treated(PWHT). It has been determined that PWHT, of the repair, is inadvisable. Who is required to conduct a metallurgical review prior to applying one of the alternative methods permitted in API 653? A) A professional engineer registered in one or more states or provinces of Canada B) A Storage tank engineer C) The Authorized inspector responsible for the repair inspection D) A Metallurgical engineer experienced in alternative PWHT - ✔✔B What is another term used for "Stray currents"? A) Short circuits B) Positive currents C) Impressed Currents D) Interface currents - ✔✔D Thick-film linings are commonly reinforced with which of the following? A) Sand and small diameter gravel B) Copper wire, Stainless steel wire, and low alloy steel mesh fabric C)Chopped PVC piping, copped ABS Piping and resin beads D) Woven glass mat, chopped glass fibers, and organic fibers - ✔✔D How and to what extent are new welds for tank bottom plates required to be examined? A) Newly welded bottom joints shall be tested their entire length using liquid penetrate
B) Newly welded bottom joints shall be tested their entire length using a vacuum box and a solution film, or a tracer gas and detector C) Newly welded bottom joints shall be tested their entire length using visual examination D)Newly welded bottom joints shall be tested their entire length using wet fluorescent magnetic particle examination - ✔✔B According to API 653, no welding is permitted when the temperature of the base metal is below what value? A) Base metal temperature below - 20 F B) Base metal temperature below 0 F C) Base metal temperature below 20 F D) Base metal temperature below 30 F - ✔✔B IF an AST is fabricated of material of unknown toughness and meets the thickness and temperature exemption curve of API 653, the storage tank engineer must concur, in writing, with the alternative weld method in lieu of PWHT. Who is required to authorize the alternative and how must this be accomplished? A) The owner/operator in writing B) The Owner/operator verbally C) The Authorized Inspecor in writing D) The Authorized Inspector verbally - ✔✔A When must an evaluation, to determine the suitability for continued use, be conducted? A) Evaluations shall be conducted when a tank inspection reveals a change has occurred from the original physical condition of a tank. B) Evaluations shall be conducted at least annually C) Evaluations shall be conducted at an interval not to exceed the calculated tank inspection frequency D) Evaluations shall be conducted once each ten years of service - ✔✔A Inspection Hold points and minimum documentation to be submitted upon job completion for repairs and alterations will be designated by the:
The preheating method alternative to PWHT is limited to: A) P-1 materials that are required to be impact tested B) P-1 materials that are not required to be impact testes C) P-1 or P-3 materials that are required to be impact tested D) P-1 or P-3 materials that are not required to be impact tested - ✔✔B API 653 defines a "repair organization" as: A) an owner/operator of aboveground storage tanks who makes repairs or alterations to tanks owned by others. B) Anyone who makes repairs or alterations to aboveground storage tanks that is authorized by the appropriate jurisdiction to make repairs in accordance with ASME Section VIII C) Any contractor who repairs or alters aboveground storage tanks. D) An owner/operator of aboveground storage tanks who repairs or alters his/her own equipment in accordance with API 653 - ✔✔D Which of the following dimensions would be acceptable for lap-welded patch plate repair according to API 653? A) Four inches by five inches B) Eight inches by two inches C) Two inches by two inches D) Six inches by three inches - ✔✔A When a welders test coupon fails by radiography, how is the welder re-tested? A) The immediate re-test shall be by visual examination B) The immediate re-test shall be by radiography C) The immediate re-test shall be by mechanical testing D) The immediate re-test shall be by both mechanical testing and radiography - ✔✔B
The owner/operator requires and NPS 3-1/2 nozzle to be installed in an in-service tank. The tank is 110 feet in diameter, 60 feet maximum fill height, shell thickness at the point of hot tap is 0.75", and the material is of unknown toughness with a minimum design metal temperature of 38 F. This nozzle is to be installed adjacent to an existing nozzle. Using the formula Spacing = √(RT) what is the minimum spacing between these nozzles? A) 22.24" B) 9.08" C) 19.08" D) 2.24" - ✔✔A What is the maximum surface temperature, of the part being examined, permitted for Magnetic Particle examination using dry particles? A) As determined by the particles manufacturer B) 600°F C) 125°F D) 135°F - ✔✔A After an aboveground storage tank is completed, what shall be done with the radiographs? A) They shall become the property of the insurance company B) They shall become the property of the manufacturer C) They shall become the property of the purchaser D) They shall become the property of the API - ✔✔C If it is decided to change the service to a more severe service, it is necessary to: A) Consider the need for pneumatically testing the entire tank B) Consider the need to recalculate the effectiveness of all reinforcement of openings C) Consider the need for hydrostatic testing D) Consider removing all previous welded repairs and have them redone - ✔✔C
C) Engineer experienced in storage tank design and the evaluation methods used D) Exemption of hydrostatic testing for repairs can only be given by the jurisdiction - ✔✔C Tack welds used in the assembly of vertical joints in tank shells may remain in place when the joints are welded manually provided: A) They are properly cleaned of all weld slag B) They are sound C) Liquid Penetrant or Magnetic Particle examination is performed D) They shall not reamain - ✔✔D New reinforcing plates shall be installed in accordance with Fig 9-3 of API 653. However, in order to maintain weld spacing, what reinforcing plate is permitted? A) Oval B) Diamond C) Tombstone D) Circular is the only permitted shape - ✔✔C The thickness of the bottom plate projection beyond the shell, measured at the toe of the weld of the outside bottom-to-shell fillet weld shall be not less than? A) 0.250" B) 0.100" C) 0.500" D) 0.010" - ✔✔B According to API RP 575, What ultrasonic method can be used to assit in the discrimination between inclusions in the metal and laminations? A) A Scan B) B Scan C) Straight beam D) Shear wave - ✔✔D
The addition of carbon to a metal: A) Generally makes the material easier to weld B) Generally makes the material more difficult to weld C) Has no effect on the weldability of the material D) Reduces the susceptibility of the material to delayed cracking from hydrogen - ✔✔B Ultimate responsibility for compliance with API Standard 653 rest with _____? A) The owner/operator B) the owner/operators' inspector C) The repair organization of the Owner/operator D) the manufacturing of the AST - ✔✔A Of the following what has historically not been a cause of bottom failures? A) Non-homogeneous fill under the tank bottom B) Rock or gravel foundation pads with inadequately filled-in surface voids C) Inadequate inspection frequency D) Inadequately supported sumps - ✔✔C No known tank failures attributed to brittle fracture have occurred at shell metal temperature of ___°F and above A) 60 B) 40 C) 20 D) - 20 - ✔✔A Internal inspections are primarily required to do all but which of the following? A) ensure the internal surfaces of the tank are thoroughly cleaned periodically B) Identify and evaluate any tank bottom settlement
D) Non-corrosive - ✔✔D How many settlement survey points are required for an AST that is 180 feet in diameter? N=D/ A) 12 B) 19 C) 18 D) 10 - ✔✔C What welds do not require welder's identification? A) All welds require identification B) Vertical welded joints which are located within the final shell course since this course will be subjected to relatively low stresses C) Roof plate welds and flanges-to-Nozzle-neck welds D) Roof Plate welds and bottom plate welds - ✔✔C When shall measurements be taken to verify tolerances of reconstructed tanks? A) After hydrostatic testing B) Before hydrostatic testing C) After lay out of all plates D) After fit-up and tack welding used for alignment purposes - ✔✔B Under what condition may magnetic particle examination be performed on a part with a coating such as paint left on the part? A) It must be demonstrated, in accordance with Mandatory Appendix II, that indications can be detected through the maximum coating thickness applied B) It must be demonstrated, in accordance with ASME Section VIII, Div 2, that indications can be detected through the maximum coating thickness applied C) It must be demonstrated, in accordance with Mandatory Appendix I, that indications can be detected through the maximum coating thickness applied D) All coatings shall be removed prior to magnetic particle examination, the coatings could mask discontinuities - ✔✔C
A properly selected, applied, and maintained internal bottom lining proves leak prevention by____. A) Limiting internal corrosion of the steel tank bottom B) Creating a cathodic protection barrier on the internal surface C) Enhancing the effectiveness of the external cathodic protection system D) Limiting internal corrosion of the support columns and landings pads - ✔✔A Each welder and welding operator shall be assigned____. A) only one joint to ensure traceability B) An identifying number, letter, or symbol C) A specific welding machine D) Weld joints on only side of the tank - ✔✔B Soil corrosion appears as external thinning with localized losses due to: A) Grooving B) Acid Etching C) Erosion D) Pitting - ✔✔D The use of oiled sand beneath tank bottoms does not eliminate the need for cathodic protection and in fact may cause cathodic to be less effective because: A) the oiled sand has higher resistivity B) The sand is unable to conduct electrical current C) The oil acts as an insulator and block current flow D) The oil creates a vapor bearer entrapping water and contaminants next to the tank bottom. - ✔✔A Welder qualification tests conducted by one manufacturer: A) Qualifies a welder or welding operator to do work for another manufacturer
C) Site D) Local jurisdiction - ✔✔C Atmospheric corrosion can occur on all external parts of a tank. During your inspection, you notice considerable damage to the protective coating and accelerated corrosion rates. What would you suspect the cause to be? A) Sulfurous, acidic, marine atmosphere B) Hydrogen and oxygen rich atmosphere C) Nitrogen and Oxygen rich atmosphere D) Carbon dioxide and nitrogen rich atmoshere - ✔✔A Why is inspection for crack-like flaws of the lower shell-to-sketch-plate weld critical? A) This area is more susceptible to cracking because it is subjected to internal and external atmosphere B) This area is critical because in relatively large or hot tanks, it has more potential for cracking C) This area is critical because in relatively large or hot tanks, it has more potential for corrosion D) this area is critical because in relatively small or cold tanks, it has more potential for cracking. - ✔✔B Lapped patch shell repairs are not permitted on shell courses exceeding what thickness? A) 1/2 inch B) 3/4 inch C) 1 inch D) 1-1/4 inch - ✔✔A Unless an entire shell plate is replaced, the replacement plate may be circular, oblong, square or rectangular provide the corners are: A) provided with a radius of at least 1 inch B) Provided with a radius of at least 3% of the short dimension of the plate C) Provided with a radius of at least 3 inches D) Provided with rounded corners - ✔✔D
The preferred methods of detecting Chloride Stress Corrosion Cracking are: A) Liquid Penetrant and Phase analysis Eddy Current B) Liquid Penetrant and Ultrasonic Shear Wave C) Liquid Penetrant and Radiography D) Liquid Penetrant and Visual - ✔✔A According to API 653, which of the following would not be considered a major repair? A) Installing a bottom penetration within 12" of the shell B) Installing shell penetration larger that NPS 12 beneath the design liquid level C) Removing and replacing or adding a shell plate beneath the design liquid level where the longest dimension of the replacement plate exceeds 12" D) Removing and replacing the entire roof of a cone roof tank - ✔✔D Based on the following information, what is the calculated ciritical lenfght L? Tank diameter 175ft. least thickness in the area of corrosion, exclusive of pits, 0.761" L=3.7√(Dt2) A) 42.7" B) 40" C) 11.54" D) 492.7" - ✔✔A Replacement and new penetrations, in reconstructed tanks, shall be designated, detailed, welded, and examined to meet what requirements? A) The current applicable standard B) The original standard construction C) The requirements of the Authorized Inspector D) The requirements of the owner/operator - ✔✔A All shell plates and bottom plates welded tot he shell shall be identified. Material identified by any of the following except _____ does not require further identification?
D) 6G - ✔✔D
If existing plates are to be used to reconstruct the tank, they shall be checked for which of the following? A) Chemical compatibility with other plates used in the reconstruction B) excessive corrosion and pitting C) Mechanical strength including impact properties D) Inadequately reinforced openings - ✔✔B Inspection reports, as a minimum, shall include which of the following? A) Type of inspection, scope of inspection, repairs, conditions found, settlement measurements, and recommendations B) Type of inspection, repairs, operational upsets, settlement measurements, and recommendations C) Type of inspection, repairs, conditions found, name of organization performing environmental impact study, and recommendations D) Type of inspection, list of all personnel who have worked on the tank since the last inspection, conditions found, settlement measurements and recmmendations - ✔✔A Of the following, which is not a consideration that must be addressed in determining inspection intervals for AST's? A) Corrosion prevention systems B) Inspection Interval of other equipment located near the tank under consideration C) Changes in service(Including changes in water bottoms) D) Previous inspection results - ✔✔B What two methods may be used in quantifying the remaining thickness of tank bottoms? A) Drilling and actual measurements B) Ultrasonic and radiography C) minimum remaining thickness calculation and probabilistic D) Detailed stress analysis and plate deformation measurements - ✔✔C
The completed welding procedure specification shall describe all but which of the following? A) Essential Variables B) Welder's Essential Variables C) Supplemental Essential Variable, when required D) Non-essential Variables - ✔✔B According to ASME Section IX, When may an IQI be placed on the film side of the part? A) Never B) Where inaccessibility prevents hand placing the IQI on the source side C) Anytime D) Only with the concurrence of the ourchaser - ✔✔B What are the two systems of cathodic protection? A) Galvanic and repressed current B) Galvanic and impressed current C) Galvanic and reversed current D) Galvanic and induced current - ✔✔B Packaged galvanic anodes should be back-filled with ____. A) Compacted special backfill material such as coke breeze B) Compacted sand C) Compacted limestone or clam shell backfill material D) Compacted native soil - ✔✔D What should be done if an indication of leakage through a crack is discovered on an in-service tank? A) A soft patch should be app;lied over the crack and the area observed for 24 hours B) It may be possible to caulk the crack to stop the leakage C) The tank shall immediately be removed from service, drained, opened, and repaired
