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Flashcards in Article - 2 (RT) Deck (16):
1

A lead symbol "B," with minimum dimensions of _______ in height and _________ in thickness

1/2 in. (13 mm) , 1/16 in. (1.5 mm)

2

Densitometers shall be calibrated at least every ________days

90

3

Densitometers:
Periodic calibration verification checks shall be performed as described in T-262.1 at the beginning of ________whichever comes first

each shift, after 8 hr of continuous use, or after change of apertures

4

Where inaccessibility prevents hand placing the IQI(s) on the source side, the IQI(s) shall be placed on the film side in contact with the part being examined. A lead letter "___" shall be placed adjacent to or on the IQI(s), but shall not mask the essential hole where hole IQIs are used.

F

5

All radiographs shall be free from ____________ to the extent that they do not mask and are not confused with the image of any discontinuity in the area of interest of the object being radiographed.

mechanical, chemical, or other blemishes

6

Density Limitations: 1.8 minimum for single film viewing
for radiographs made with an ______ The maximum density shall be 4.0 for either single or composite viewing

X-ray source

7

Density Limitations: 2.0 minimum for single film viewing
for radiographs made with an ______ The maximum density shall be 4.0 for either single or composite viewing

gamma ray source

8

For composite viewing of multiple film exposures, each
film of the composite set shall have a minimum density
of ________

1.3

9

The density of the radiograph anywhere through
the area of interest shall not (1) vary by more than _____________ from the density through the body of the designated hole-type IQI adjacent to the essential hole or adjacent to the essential wire of a wire-type IQI

minus 15% or plus 30%

10

If a light image of the "B," as described in T-223, appears on a darker background of the radiograph, protection from backscatter is insufficient and the radiograph

unacceptable

11

Where are hole type |Q| placed when radiographing welds(1st choice)

adjacent to or on the weld but not in the area of interest (when possible)

12

Where are location markers placed if they are to appear as a radiographic image ?

Where are location markers placed if they are to appear as a radiographic image ?
on the part to be radiographed

13

|Q| is normally placed on which side of a part?

the source side expert when in accessibility prevents hand placement on that side.

14

What designation is used to indicate the |Q| is on the film side?

a lead letter "F" placed next to or on the IQ

15

How many |Q|s should appear on each radiograph?

it depends on the configuration used to set up the shot( panoramic multifilm, single shots , etc....)

16

Shims may be placed under |Q|s to stimulate weld reinforcement to assure the density in the area of interest is no more than ______ lighter than the density through the |Q|.

15%