ASME ASME Pressure Testing and Inspection 2

Question 1

In ASME pressure vessel inspection, what does 'corrosion allowance' represent?

Accepted Answer

Additional wall thickness added during design to allow for material loss during service life

Answer

Corrosion allowance is additional wall thickness intentionally added during design to compensate for anticipated material loss due to corrosion over the vessel's service life.

Question 2

Under ASME Section V Article 2, what is the purpose of radiographic 'image quality indicators' (IQIs or penetrameters)?

Accepted Answer

To demonstrate the radiographic sensitivity and ensure the technique can detect a specified minimum flaw size

Answer

IQIs (penetrameters) demonstrate that the radiographic technique has sufficient sensitivity to detect a minimum flaw size, ensuring the examination is meaningful.

Question 3

What is the purpose of an ASME 'U' (Universal) stamp on a pressure vessel?

Accepted Answer

It identifies the vessel as manufactured to ASME Section VIII Division 1

Answer

The ASME 'U' stamp on a pressure vessel data report certifies that the vessel was manufactured in accordance with ASME Boiler and Pressure Vessel Code Section VIII Division 1.

Question 4

Under ASME Section VIII, what is 'MAWP' for a pressure vessel?

Accepted Answer

The maximum pressure at the most severe coincident temperature for which the vessel is designed

Answer

Maximum Allowable Working Pressure (MAWP) is the maximum pressure at which the most severe coincident temperature can be applied to a completed vessel, as determined by the weakest element's Code-allowable stress.

Question 5

In ASME Section V UT examination, what is 'calibration' of an ultrasonic instrument?

Accepted Answer

Setting the gain and time base using a reference reflector of known size to establish sensitivity and range

Answer

Calibration in UT involves using a reference block with known reflectors to set the instrument's sensitivity and distance calibration so that indications can be accurately characterized.

ASME - American Society of Mechanical Engineers Practice Test

ASME - American Society of Mechanical Engineers Practice Test

ASME ASME Pressure Testing and Inspection 2