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Families of Information - Radiography
Terms in this set (31)
Length of RT on Vert or Horizontal tank weld?
Length of RT at tank intersections: Vertical
Length of RT at tank intersections: Horizontal
2" each side of vertical
If there's a weld defect in a spot RT, how many more RT's are required?
2, unless 3" of good weld
Method for RT: RT is shot to:
ASME Section V
Personnel requirements for shooting an RT on a tank:
Acceptance Criteria for RTs is found in:
ASME Section VIII
A rounded indication is one that's length is less than or equal to how many times it's width?
100% of new vertical welds should be RT'ed if the shell thickness is greater than:
How many RT's are needed when a rectangular insert plate is installed in the shell?
Which RT Exposure Technique is preferred?
A nozzle circ weld is being completely radiographed using a Double-Wall Technique with a Single-Wall view. A minimum of how many RT's is required?
A nozzle circ weld is being completely radiographed using a Double-Wall Technique with a Double-Wall view. A minimum of how many RT's is required?
The maximum pipe size when RT'ing a pipe using Double-Wall Technique with Double-Wall viewing is?
3 NPS (3.5" O.D.)
Wire type IQIs are placed in which orientation?
Perpendicular to the weld
Hole type IQIs are placed in which orientation?
Adjacent to the weld
If a hole type IQI is used, which hole must be seen in the RT?
The preferred location for the IQI is which side?
If an IQI is placed on the film side, which letter should be placed near the IQI?
If a shim is under a hole type IQI, then how many sides of the IQI should be distinctly visible in the RT?
When using a gamma radiation source, what are the film density limits for the IQI and weld?
2.0 - 4.0
Densitometers should be calibrated how often?
What is an indication of unacceptable backscatter?
Faint / light "B"
Iridium 192 is used on what material wall thicknesses?
0.250" - 3.0"
Cobalt 60 is used on what material wall thicknesses?
1.5" - 7.0"
When qualifying a welder with RT, what 3 indications are always unacceptable?
Cracks, Lack of Fusion, Incomplete Penetration
When can RT not be used to qualify a welder? (What process?)
GMAW Short-circuiting mode
How much RT is required to qualify a welder using a coupon?
How much RT is required to qualify a welder using the first production weld?
How much RT is required to qualify a welding operator using a coupon?
How much RT is required to qualify a welding operator using the first production weld?
THIS SET IS OFTEN IN FOLDERS WITH...
Data Sheets - Thicknesses
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API RP 575 Terms & Definitions
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