Ultrasonic Testing Method- level II Practical Examination
Figure 4
(8)In figure-4 indication D represents (a) (b) (c) (d)
1st back surface reflection 1st indication front discontinuity 2nd back surface reflection 2nd indication from discontinuity
(9) While testing a signal-V butt weld, using a 45º search unit, a high amputated reflector is detected from one side of the weld in the first leg, and is calculated to be at a depth of one-half of weldment thickness. Testing from the other side of the weld, a reflector calculated to be in the same location is detected in the second leg, with only slightly diminished amplitude, when amplitude is corrected for distance losses. Which type of discontinuity is this reflector most likely to be? (a) (b) (c) (d)
(10) A 10-foot long turbine shaft is to be inspected from one end with 0 degree longitudinal for radial, circumferential fatigue cracks in an area between 90 and 110 in. from the inspection end. The available instrument screen can display a maximum of 80 in. How should the operator proceed? (a) (b) (c) (d) (e)
Use a delay line. Use the stuffing box immersion technique. Decrease rep rate. Set up an 80 in. screen and delay the start to 30 in. Set up 20 in. screen and delay the start to 90 in
No. Qcon-QAC-NDT-GNRL-RT-II-01/2014
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Ultrasonic Testing Method- level II Practical Examination
(11).
A single Vee, butt weld in a 3 in. plate is being examined using a 60-degree shear wave. An indication on the CRT appears at a sound path distance of 9 in. At the same time the exit point of the transducer is 7.8 in. from the centerline of the weld. This suggests the reflector could be__________. (a) (b) (c) (d) (e)
(12).
A crack in the near side HAZ. Lack of fusion at the weld/base material interface. Inadequate penetration at the toe of the weld. An undercut condition on the far side of the weld. A slag inclusion in the center of the weld.
Under the conditions above, the reflector is at a depth of __________ (measured from the transducer side). (a) (b) (c) (d) (e)
1.5 in. 1.0 in. 2.0 in. 2.25 in. 2.50 in
(13). Under the conditions above, but with the indication at a 6 in. sound path distance and with the exit point 5.2 in from the weld centerline, another strong indication is received indicating a probable reflector in the __________ the weld. (a) (b) (c) (d) (e)
(14).
Root area of. Crown area of. Midsection of. Base metal adjacent to. Backing strip beneath.
Under the conditions above, but with the indication at a sound path distance of 9 in. and with the exit point 8.1 in. from the weld centerline, the reflector lies in a plane that is ________ in. from the center of the weld. (a) (b) (c) (d) (e)
on the far side 0.3 (on the near side). 0.3 (on the far side). 0.5 (on the near side). 0.6 (on the far side).
No. Qcon-QAC-NDT-GNRL-RT-II-01/2014
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Ultrasonic Testing Method- level II Practical Examination (15)
During angle beam inspection of a flush ground single V-groove butt weld, a discontinuity echo signal can be maintained as the transducer is orbited 360º with the sound beam directed at a fixed point on the weld axis. However, the echo signal is rapidly lost as the transducer is moved parallel to the weld axis, with the beam directed perpendicular to the weld axis. The echo is most likely to represent:
(a) (b) (c) (d)
Crack. Inadequate root penetration. Lack of sidewall fusion. Porosity.
Good Luck Kamel, Mohamed Karim Ramy Qcon NDT Level III ASNT ID: 187350
