CODE/CERTS
Symbols
GTAW
Pipe
MISC.
100
The structural steel welding code, with prequalified weld joints for specific processes such as SMAW, SAW, FCAW, and GMAW.
What is AWS D1.1
100
This consists of a reference line, an arrow, and a tail.
What is a standard welding symbol
100
This must be done once a weld is contaminated by the tungsten touching the weld pool.
What is cleaning tungsten and weld
100
This is the optimal groove angle for pipe welding.
What is 75 degrees
100
The terms arrow side, other side, and both sides are used to indicate this.
What is Weld location with respect to the joint
200
In a PQR, flow rate should be recorded in this.
What is CFH, or cubic feet per hour.
200
In the standard welding system this line is used to apply weld symbols and other data.
What is a reference line
200
This is the best torch angle for visibility while heliarc welding.
What is 0-15 degrees from perpendicular
200
Failure to remove the root edge of a pipe may result in this.
What is suck back or concave root surface
200
A welder's qualification is normally considered effective for this period.
What is indefinitely......
300
The form used to document the welder performance qualification test is called this.
What is Welding Qualification Test Record or WQTR.
300
Applying this letter to a contour symbol signifies any method of finish may be used.
What is a U
300
These are the most common types of contaminants.
What is oxides, oil, and dirt
300
These are the two most common root defects
What is incomplete fusion and concave root surface
300
These are changes considered to affect the mechanical properties of the weldment to the point of requiring requalification of the procedure
What is essential variables
400
1G, 2G, 3G, etc. are examples of this.
What is material position
400
This term indicates removal of weld metal and base metal from the other side of a partially welded joint.
What is back gouge
400
With this metal cleanliness is a critical factor.
What is aluminum
400
Filler passes should fill the groove as much as possible but no more than this.
What is 1/4"
400
In a visual inspection under cut should not exceed 1/32 or this percentage of the base metal thickness.
What is 10%
500
A weld must pass both face and root bends to be acceptable. After bending there can be no single defects larger than...
What is 1/8"
500
These welds are not made in the shop and are indicated by a flag on the break of a welding symbol.
What is field weld
500
Exceeding the maximum gas flow rate will do this.
What is cause weld contamination
500
To purge the air out of a 5ft section of 12 inch diameter pipe, if the flow rate is CFH the flow time will equal this.
What is 9.35 min round up 9min 30sec.
500
The scum or unwanted material that forms on the surface of the backside of molten metal during the PAC or OFC process.
What is dross
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