CSA W47.1-Chapter 7 (Techniques of
Visual Inspection)-Test Questions and
Answers.
When using measuring devices, accuracy is how: - Answer close repeated measurements are
to the true value.
True or False? Systematic errors can always be avoided by using a sufficiently precise measuring
instrument. - Answer False.
Dimensions on a drawing should be measured from a common datum or reference line to avoid:
- Answer Cumulative errors.
True or False? When reading a meter with a pointer, always stand directly in front to avoid a
parallax error: - Answer True.
When making accurate measurements with a long steel tape, it is important that the tape be
held: - Answer Under the correct tension applied with a tension handle.
Vertical reference lines are easily checked using a: - Answer Plumb line.
True or False? The standard recognized temperature for checking steel tapes is 20 degrees. -
Answer True.
True or False? When using a string as a reference line to measure distortion in a plate, always
make the measurements horizontally from the string to the plate. - Answer True.
True or False? Tapered wedges are used for measuring the inside and outside of a edge of a gap.
- Answer False.
According to CSA Standard W59, at what distance from the weld must the minimum preheat be
maintained in a 44 mm thick plate. - Answer 75 mm.
Visual inspection of inaccessible areas may be carried out with the use of: - Answer
Boroscopes.
CSA W59 states surfaces and edges that are to be welded must be free of slag, rust, paint and so
forth within ____ of the weld to prevent weld contamination. - Answer 50 mm.
, There is a cost to poor fit-up since a gap of _____ mm or greater in a fillet weld requires the size
of the fillet weld to be increased by the amount of the gap. - Answer 2 mm.
_______ are normally required to be welded together to avoid a gap that may initiate cracks. -
Answer Backing bars.
Which dimension should be measured when visually inspecting a concave fillet weld? - Answer
The throat.
For fillet welds with unequal leg sizes, where an equal leg fillet was specified, always measure
the: - Answer Shorter leg length.
True or False? There is a simple relation between face width and throat size for flare welds that
can be used in all cases. - Answer False.
According to CSA W59, the maximum allowable depth of undercut for a weld under cyclic
loading where the direction of the load is transverse to the undercut is: - Answer 0.25 mm.
True or False? In CSA Standard W59, the acceptable porosity requirements are different for
static and cyclic loading. - Answer True.
The correct weld pass termination procedure to prevent craters is to: - Answer Hold the arc
over the end of the weld for a period of time before ending the weld.
True or False? If a camber diagram is specified it is necessary to check camber at only one point
only. - Answer False.
The maximum combined warpage and tilt of a flange permitted by CSA W59 is: - Answer 1/100
x flange width, 6 mm maximum.
A specified curvature in the plane of the flange is known as: - Answer Sweep.
Out-of-roundness of cylindrical sections can be checked by measuring the: - Answer Diameter
at different points.
True or False? It is possible to determine whether misalignment tolerances can be met by
measuring the circumference of the end of 2 pipes before welding. - Answer True.
Visual Inspection)-Test Questions and
Answers.
When using measuring devices, accuracy is how: - Answer close repeated measurements are
to the true value.
True or False? Systematic errors can always be avoided by using a sufficiently precise measuring
instrument. - Answer False.
Dimensions on a drawing should be measured from a common datum or reference line to avoid:
- Answer Cumulative errors.
True or False? When reading a meter with a pointer, always stand directly in front to avoid a
parallax error: - Answer True.
When making accurate measurements with a long steel tape, it is important that the tape be
held: - Answer Under the correct tension applied with a tension handle.
Vertical reference lines are easily checked using a: - Answer Plumb line.
True or False? The standard recognized temperature for checking steel tapes is 20 degrees. -
Answer True.
True or False? When using a string as a reference line to measure distortion in a plate, always
make the measurements horizontally from the string to the plate. - Answer True.
True or False? Tapered wedges are used for measuring the inside and outside of a edge of a gap.
- Answer False.
According to CSA Standard W59, at what distance from the weld must the minimum preheat be
maintained in a 44 mm thick plate. - Answer 75 mm.
Visual inspection of inaccessible areas may be carried out with the use of: - Answer
Boroscopes.
CSA W59 states surfaces and edges that are to be welded must be free of slag, rust, paint and so
forth within ____ of the weld to prevent weld contamination. - Answer 50 mm.
, There is a cost to poor fit-up since a gap of _____ mm or greater in a fillet weld requires the size
of the fillet weld to be increased by the amount of the gap. - Answer 2 mm.
_______ are normally required to be welded together to avoid a gap that may initiate cracks. -
Answer Backing bars.
Which dimension should be measured when visually inspecting a concave fillet weld? - Answer
The throat.
For fillet welds with unequal leg sizes, where an equal leg fillet was specified, always measure
the: - Answer Shorter leg length.
True or False? There is a simple relation between face width and throat size for flare welds that
can be used in all cases. - Answer False.
According to CSA W59, the maximum allowable depth of undercut for a weld under cyclic
loading where the direction of the load is transverse to the undercut is: - Answer 0.25 mm.
True or False? In CSA Standard W59, the acceptable porosity requirements are different for
static and cyclic loading. - Answer True.
The correct weld pass termination procedure to prevent craters is to: - Answer Hold the arc
over the end of the weld for a period of time before ending the weld.
True or False? If a camber diagram is specified it is necessary to check camber at only one point
only. - Answer False.
The maximum combined warpage and tilt of a flange permitted by CSA W59 is: - Answer 1/100
x flange width, 6 mm maximum.
A specified curvature in the plane of the flange is known as: - Answer Sweep.
Out-of-roundness of cylindrical sections can be checked by measuring the: - Answer Diameter
at different points.
True or False? It is possible to determine whether misalignment tolerances can be met by
measuring the circumference of the end of 2 pipes before welding. - Answer True.
