QC 1
The International Organization of standards defines quality as ???????
The degree to which a set of inherent characteristics fulfills requirements Page 6
The quality of a weld maybe defined as the weld's ability to do what?
Preform reliably throughout its intended service life.
Page 6
A discontinuity can be characterized by a lack of consistency in ?
Mechanical , Metallurgical or physical characteristics.
Page 7
The term defect is used to designate ?
Rejectability
A discontinuity is always considered a defect TRUE?FALSE
False Page 7
When determining if a discontinuity is a defect consider ?
Type, Quantity,Type of weld,and service condition
What are the two types of inspection methods that can be preformed to identify discontinuities .
Destructive testing and non destructive testing
What is a common destructive test ?
Bend test Page 7
NON destructive test what are they
(VT) (LP) (MPI) (UT) (RT)Visual,Liquid Penetrant,Magnetic particle,Ultrasonic
Radio graphic
The most important form of NDT for a welder is ?
Visual Inspection
CSA W 47.1 certification is used for
Fusion welding of steel
What is ASME B31.1 used for
Power piping
What is ASME B31.3 used for?
Process Piping
The two main fit up dimensions to inspect are?
The alignment of the parts or mating surface
The gap between the pieces to be welded
Page 10
Misalignment my lead to ?
Considerable rework, issues with final assembly
Replace part,
Misalignment can be measured with ?
A rule or misalignment tool
Welding gauge cam gauge
Hi low gauge
How should you measure longitudinal seams in a pressure vessel?
Always use the gauge at an angle that is close to parallel with the weld seam.
Page 11
Gaps can be measured using ?
A tapered wedge
Feller gauges
Page 15 Table 2 Root not gouged with steel backing is?
+6mm(+1/4)-2mm(-1/16)
An included bevel angle 75degrees is subject to workmanship tolerance of +10,-5 on the shop floor the included angle range would be ?
75 + 10= 85 degrees max
and 75-5=70 degrees minFillet weld size is specified by the _________________
Leg length of the largest equal legged triangle that can be drawn within the cross section of the weld
Page 19
Weld bead reinforcement can be measured with?
Depth gauges or bridge cam gauges
What is a (ITP) plan?
Inspection and test plan
Page 27
Prior to welding taking place a welding inspector must ensure ?
The correct base metal ,consumables
Storage and handling procedures comply with codes
The shop has approved welding procedures
Welders are qualified
The welding inspector has three primary responsibilities during welding what are they?
Written procedures are being followed
Workmanship requirements are met.
Watch the welding operation and product for any signs of non-conformance.Page 28