CWB Welding Inspector Level 1 flashcards
CWB Welding Inspector Level 1 · Build recall with a focused review session.
32 cards. Read the term and the definition here. The deck at the top of this page is optional.
- Visual inspection definition
- A non-destructive examination method using the unaided eye and aids such as magnifiers and lighting to detect surface and near-surface discontinuities before, during, and after welding.
- Illumination requirement
- Inspection surface lighting should be at least 500 lux for general visual inspection and 1000 lux or more for fine detail; verify with a calibrated light meter.
- Undercut
- A groove melted into the base metal or previous bead along the weld toe that is not filled by weld metal; measured by depth and cumulative length against code limits.
- Overlap
- Weld metal that protrudes beyond the weld toe or root without fusing to the base metal; a surface discontinuity detectable visually and usually rejectable.
- Hi-lo misalignment
- Radial offset between the surfaces of two abutting parts; many structural codes limit it to 10% of thickness, not exceeding 3 mm (1/8 in).
- Weld reinforcement
- Weld metal in excess of the amount needed to fill the joint; measured on the weld face and limited by code, commonly 3 mm (1/8 in) for butt joints.
- Fillet weld leg
- The distance from the joint root to the toe of a fillet weld, measured on the fusion face; it determines the specified fillet weld size.
- SMAW electrode E7018
- A shielded metal arc electrode with 70 ksi minimum tensile strength, usable in all positions, and a low-hydrogen iron powder coating requiring dry storage.
- GMAW transfer modes
- Short-circuit, globular, spray, and pulsed transfer; short-circuit is used for thin and out-of-position work, spray gives high deposition in flat positions.
- FCAW self-shielded
- A flux-cored arc welding variant with flux inside the tubular wire and no external shielding gas; tolerant of wind and used outdoors.
- GTAW process
- Gas tungsten arc welding uses a non-consumable tungsten electrode, inert shielding gas, and usually separate filler wire; suited to thin material and root passes.
- Submerged arc welding
- An arc welding process in which the arc is hidden under a blanket of granular flux; high deposition but limited to flat and horizontal positions.
- DCEP polarity
- Direct current electrode positive; the electrode is the positive pole, giving deeper penetration and stable arc, and is standard for GMAW.
- Shielding gas purpose
- An inert or active gas that displaces air around the molten weld pool, preventing oxidation and porosity; selection depends on process and metal.
- Welding current effect
- Higher current increases penetration and deposition but can cause undercut, spatter, and burn-through; lower current risks lack of fusion.
- CWB certification
- A Canadian program administered by the Canadian Welding Bureau under CSA W47.1, W47.2, and W186, covering fabricator certification and welder qualification.
- CSA W47.1 Divisions
- Fabricator certification categories for steel; Division 1 requires the highest in-house engineering and quality control capability, Division 3 the least.
- Welding Procedure Specification
- A written document describing the welding variables and parameters required to produce a weld that meets code; it must be supported by a qualified procedure qualification record.
- Procedure Qualification Record
- The documented record of the test weld and destructive or nondestructive test results that prove a welding procedure specification produces sound welds.
- ASME Section IX
- The ASME Boiler and Pressure Vessel Code section governing qualification of welding procedures and welders for pressure equipment.
- AWS D1.1
- The American Welding Society structural welding code for steel, defining prequalified joints, procedure requirements, and visual acceptance criteria.
- Welder requalification
- A welder must be requalified after an extended interruption of welding, a change of process or position, or production weld failure, per code rules.
- Inspection sequence
- Verify materials and consumables, check fit-up, monitor preheat and interpass temperature, observe root and fill passes, then perform final visual and dimensional checks.
- Preheat verification
- Preheat is confirmed with temperature-indicating crayons, contact thermometers, or infrared devices, measured at a code-specified distance from the joint.
- Fillet weld gauge
- A measuring tool with blades used to check the leg length and throat of fillet welds against the specified size.
- Bridge cam gauge
- A multi-purpose gauge used to measure undercut depth, weld reinforcement, pit depth, and fillet weld leg and throat dimensions.
- Theoretical throat
- For an equal-leg fillet weld at 45 degrees, the theoretical throat equals 0.707 times the leg length.
- Nonconformance report
- A document recording the location, description, and severity of a discontinuity, routed to the responsible engineer for disposition of repair, accept, or reject.
- Inspection and Test Plan
- A project document listing inspection activities, hold points, and witness points where the inspector must sign off before work proceeds.
- Welding helmet shade
- A filter lens rated by shade number, typically shade 10 to 13 for common arc welding currents, protecting eyes from ultraviolet and infrared radiation.
- Hot work fire watch
- A designated person who monitors for fire during and after hot work, typically for at least 30 minutes after completion, per permit requirements.
- Welding fume control
- Local exhaust ventilation or respiratory protection used to keep welding fume exposure below occupational limits; galvanized steel requires additional precautions.