Practice Test Geeks(API 510) Certified Pressure Vessel Inspector Practice Test
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Pressure Vessel Design & Fabrication Standards Flashcards

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  1. Per ASME Section VIII Div. 1 UW-11, when is spot (10%) radiographic examination required rather than full radiography for Category B and C butt welds?

    Answer: When the designer selects spot RT for the joint efficiency credit of 0.85

    Spot RT per UW-11(b) is selected at the designer's option to obtain a joint efficiency of 0.85, rather than full RT (E=1.00) or no RT (E=0.70).

  2. What is the primary purpose of the Manufacturer's Data Report (Form U-1) required by ASME Section VIII Div. 1?

    Answer: To certify that the vessel was designed, fabricated, and inspected in accordance with the Code

    The U-1 form is the Manufacturer's Data Report certifying that the pressure vessel was designed, fabricated, and inspected in full conformance with ASME Section VIII Div. 1.

  3. When calculating the required shell thickness for a horizontal vessel, which load combination per ASME VIII-1 UG-22 must the designer consider in addition to design pressure?

    Answer: Weight of vessel contents, weight of vessel itself, and wind or seismic loads

    UG-22 requires consideration of internal/external pressure plus weight (vessel, contents, attachments), wind, seismic, and other applicable loadings when determining required thickness.

  4. A weld joint between a nozzle neck and a shell is classified under ASME VIII-1 as which weld joint category?

    Answer: Category D

    Category D per UW-3 covers welds connecting nozzles, communicating chambers, or other connections to the main shell, head, or side plates.

  5. In ASME Section VIII Div. 1, what is the minimum thickness (t_min) for a flat unstayed circular head attached by welding per UG-34?

    Answer: t = d × sqrt(CP / SE)

    UG-34(c) gives the formula t = d × sqrt(CP/SE) for flat circular heads, where C is a coefficient based on attachment method.

  6. What does ASME Section VIII Div. 1 UG-116 require to appear on the pressure vessel nameplate?

    Answer: MAWP, design temperature, MDMT, Code year of construction, U symbol, and serial number among other items

    UG-116 specifies that the nameplate must include the U symbol, manufacturer's name, serial number, year built, MAWP, design temperature, MDMT, and other required markings.

  7. Per ASME Section VIII Div. 1 UCS-57, what NDE method is required for detecting laminations in plate material thicker than 2 in. (50 mm) used in pressure vessel shells?

    Answer: Ultrasonic examination (UT)

    UCS-57 requires ultrasonic examination of plate material over 2 in. thick to detect internal laminations or discontinuities that could compromise vessel integrity.