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25 Cards in this Set
- Front
- Back
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When NDTs are specified, the specifications or standards for final acceptance will include the qualifications of which of the following people? A. The welders B. The persons making the tests C. The persons evaluating the results of the tests D. Both B and C |
Both B and C |
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Assume that you welded the high-strength materials that are undergoing a final acceptance radiography test. What part of the test, if any, may you perform if you are NOT certified in nondestructive testing, but you have had the required formal training? A. Evaluate the results of the tests B. Inspect the welds C. Help to prepare an item for inspection under the direction of a person qualified to make the test D. None |
Help to prepare an item for inspection under the direction of a person qualified to make the test |
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Prior to starting any nondestructive test of a weld, you should visually inspect the welded area for which of the following conditions? A. Arc strikes B. Undercutting C. Cracks D. All of the above |
All of the above |
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A void in a solid metal object that is being tested by film radiography shows on the developed film as a dark spot. What is the reason? A. Radiation is absorbed by the void and does not reach the film B. Radiation is deflected by the void and does not reach the film C. Less radiation reaches the film by passing through the object by way of the void than by other ways D. More radiation reaches the film by passing through the object by way of the void than by other ways |
More radiation reaches the film by passing through the object by way of the void than by other ways |
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What is the best single way to protect yourself against the hazards of x rays and gamma rays? A. Stay far enough away from the source B. Surround yourself with a circular lead screen C. Stay behind a lead shield placed between you and the source D. Wear protective clothing |
Stay behind a lead shield placed between you and the source |
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Lead is the best material to use as a shielding material for which of the following reasons? A. Its dense structure B. It is a soft material C. Its ability to be easily formed D. Its weight |
Its dense structure |
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What MIL-STD covers nondestructive testing acceptance criteria for interpreting radiographic inspections? A. MIL-STD 0272 B. MIL-STD 2167 C. MIL-STD 2555 D. MIL-STD 2035 |
MIL-STD 2035 |
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What causes a distorted and enlarged shadow formation to appear on radiographic film? A. The radiating source is not in an ideal position B. The film is not flush with the object being tested C. The shadow that is cast is not at a right angle to the film or the object being tested D. The metal is too thick for the power source |
The film is not flush with the object being tested |
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What defect on radiographic film shows up as round dark areas? A. Gas cavities B. Circular discontinuity C. Tungsten inclusion D. Slag |
Gas cavities |
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Which of the following metals especially needs the de-magnetized process during inspection? A. Copper B. Stainless steel C. Nickel D. Steel |
Steel |
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Magnetic particle testing can detect defects in a metal up to what maximum depth? A. 1/2 inches B. 1/4 inches C. 5/16 inches D. 3/8 inches |
B. 1/4 inches |
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What step should you perform last in MT? A. Demagnetize the plate B. Mark all defects that you detect C. Pour a penetrating dye on the plate D. Magnetize the plate again |
Demagnetize the plate |
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You should conduct a liquid penetrant inspection on a finished weld for which of the following reasons? A. To check for subsurface defects B. To check for root fusion C. Both (A) and (B) above D. To check for surface defects |
To check for surface defects |
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When testing a piece of metal for defects using the liquid penetrant inspection, what minimum length of time should you let the penetrant wet the surface of the test piece? A. 5 – 10 minutes B. 10 – 15 minutes C. 15 – 20 minutes D. 20 – 25 minutes |
15 – 20 minutes |
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What is the purpose of applying developer to a test piece during a liquid penetrant test? A. To draw the penetrant from the defect B. To develop a colored background to aid in defect identification C. To clean excess penetrant from the test area D. To outline the test area |
To draw the penetrant from the defect |
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When conducting a liquid penetrant inspection, what percentage of questionable areas should you recheck for accuracy? A. 5 percent B. 10 percent C. 15 percent D. 25 percent |
10 percent |
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When testing a piece of metal using the ultrasound method, why would you use oil or glycerin between the transducer and the test metal? A. To prevent oxidation of the test surface B. To facilitate the transfer of sound waves between the two surfaces C. To prevent friction between the contacting surfaces D. To eliminate air pockets between the contacting surfaces |
To eliminate air pockets between the contacting surfaces |
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A calibration block is used in ultrasound tests to measure what factor? A. The beam frequency B. The effectiveness of the couplant C. The size of the defect D. The depth of a defect below the surface |
The size of the defect |
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The test symbols shown on row B indicate that nondestructive tests should be made on which, if any, of the following sides? A. On the side away from the reader B. On the side indicated by the arrow C. On both sides D. None of the above |
On the side away from the reader |
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You are conducting an “H” pressure test on a section of the firemain system that has a design pressure of 150 psi. What test pressure should you use? A. 125% B. 135% C. 150% D. 202% |
135% |
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How are pneumatic pumps that are used for hydrostatic pressure tests rated? A. By pressure output B. In pressure per minute C. By system design pressure D. In gallons per minute |
In gallons per minute |
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When performing a hydrostatic test on a piping system, you should always take the true hydrostatic test pressure reading from which of the following? A. Calibration gauge B. Backup gauge C. Master gauge D. Relief pressure gauge |
Master gauge |
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On a hydrostatic test rig, how is the primary relief valve operated? A. Manually B. Mechanically C. Hydraulically D. Hydrostatically |
Manually |
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When testing a section of the firemain piping system that has been repaired in the pipe shop, you must maintain the pressure for what minimum amount of time? A. 5 minutes B. 15 minutes C. 30 minutes D. 45 minutes |
15 minutes |
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A “J” pressure test should be performed on a piping system for which of the following reasons? A. To test for pressure drop B. To verify system design pressures C. To determine the integrity of the system D. To test relief valve settings |
To determine the integrity of the system |
