CWB WELDING INSPECTOR EVALUATION EXAMS
QUESTIONS AND ANSWERS 2025/2026
✔✔cluster porosity - ✔✔A localized array of porosity having a random geometric
distribution.
✔✔cold cracks - ✔✔cracks that occur under150 degrees C
✔✔dark straight line - ✔✔in a radiograph, ibncomplete penetration appears as:
✔✔Piping porosity - ✔✔A form of porosity having a length greater than its width and
that is approximately perpendicular to the weld face.
✔✔elongated porosity - ✔✔wormhole porosity is also known as
✔✔undercut - ✔✔A groove melted into the base metal adjacent to the weld toe or weld
root and left unfilled by weld metal.
✔✔laminations - ✔✔base metal discontinuities caused by non-metallic inclusions in the
steel when it is being roled
✔✔ACGIH (American Conference of Government Industrial Hygienists) - ✔✔american
national body that sets allowable levels of exposure to hazards eg. noise, welding fume
✔✔ANSI (American National Standards Institute) - ✔✔a national standard in the united
states that addresses health and safety in welding, cutting and allied processes
✔✔acute effects - ✔✔caused by a single exposure and results in an immediate health
problem
✔✔asphyxiant - ✔✔a gas that replaces oxygen in the air causing suffocation
✔✔Attenuation - ✔✔to weaken or reduce in force, intensity, effect or quantity
✔✔chronic reaction - ✔✔symptoms that develop and apear over a period of time usually
caused by a repeated exposure to low concentrations of a hazardous substance
(WHMIS)
✔✔coalescence - ✔✔the growing together, or growth into one body of the materials
being joined
✔✔Deoxidation - ✔✔the addition of anelement such as manganese, aluminum or silico
to molten steel to reduce the amount of oxygen below 0.2%
, ✔✔Ductility - ✔✔the ability of a substance to be plastically deformed to an extent
without fracturing
✔✔fatigue - ✔✔the progressive and localized structural damage that occurs when a
material is subjected to cyclical loading
✔✔ferrite - ✔✔A solid solution of iron with a small amount of carbon that has a body
centered cubic structure that dissolves very small amounts of carbon. Below 723
degrees C this structure is virtually pure iron
✔✔flash point - ✔✔The lowest temperature to which a substance must be heated in
order for the substance to give off vapors which will ignite
✔✔lamellar tearing - ✔✔a subsurface terrace and step like crack in the base metal with
a basic orientation para;;e to the wrought surface caused by tensile stresses in the
trough thickness direction of the base metal weekend by the presence of small
dispersed, planar shaped, non metallic inclusions parrallel to the metal surface
✔✔latency - ✔✔the time between first exposure to a substance and first appearance of
a disease (WHMIS)
✔✔material safety data sheet - ✔✔MSDS stands for:
✔✔metastable - ✔✔a relatively unstable, transient, but significant state or condition of a
chemical or physical system
✔✔Odour threshold - ✔✔The level in ppm at which most people will be able to smell the
substance
✔✔strain - ✔✔a measure of the change in size or shape of a body of material in relation
to its original size or shape
✔✔Vacuum Degassing - ✔✔ingot mold is melted in an evacuated chamber and then is
poured through a vacuum to suck out dissolved gases such as hydrogen and oxygen
✔✔yield strength - ✔✔the point at which a material begins to deform permanently
✔✔ faying surface - ✔✔the mating surface of a member that is in contact with or in
close proximity to another member to which it is to be joined.
✔✔joint - ✔✔the junction of the workpieces that are to be joined
✔✔supplementary welding symbols - ✔✔____ ___ are used to provide complementary
information to the basic elements of a basic welding symbol
QUESTIONS AND ANSWERS 2025/2026
✔✔cluster porosity - ✔✔A localized array of porosity having a random geometric
distribution.
✔✔cold cracks - ✔✔cracks that occur under150 degrees C
✔✔dark straight line - ✔✔in a radiograph, ibncomplete penetration appears as:
✔✔Piping porosity - ✔✔A form of porosity having a length greater than its width and
that is approximately perpendicular to the weld face.
✔✔elongated porosity - ✔✔wormhole porosity is also known as
✔✔undercut - ✔✔A groove melted into the base metal adjacent to the weld toe or weld
root and left unfilled by weld metal.
✔✔laminations - ✔✔base metal discontinuities caused by non-metallic inclusions in the
steel when it is being roled
✔✔ACGIH (American Conference of Government Industrial Hygienists) - ✔✔american
national body that sets allowable levels of exposure to hazards eg. noise, welding fume
✔✔ANSI (American National Standards Institute) - ✔✔a national standard in the united
states that addresses health and safety in welding, cutting and allied processes
✔✔acute effects - ✔✔caused by a single exposure and results in an immediate health
problem
✔✔asphyxiant - ✔✔a gas that replaces oxygen in the air causing suffocation
✔✔Attenuation - ✔✔to weaken or reduce in force, intensity, effect or quantity
✔✔chronic reaction - ✔✔symptoms that develop and apear over a period of time usually
caused by a repeated exposure to low concentrations of a hazardous substance
(WHMIS)
✔✔coalescence - ✔✔the growing together, or growth into one body of the materials
being joined
✔✔Deoxidation - ✔✔the addition of anelement such as manganese, aluminum or silico
to molten steel to reduce the amount of oxygen below 0.2%
, ✔✔Ductility - ✔✔the ability of a substance to be plastically deformed to an extent
without fracturing
✔✔fatigue - ✔✔the progressive and localized structural damage that occurs when a
material is subjected to cyclical loading
✔✔ferrite - ✔✔A solid solution of iron with a small amount of carbon that has a body
centered cubic structure that dissolves very small amounts of carbon. Below 723
degrees C this structure is virtually pure iron
✔✔flash point - ✔✔The lowest temperature to which a substance must be heated in
order for the substance to give off vapors which will ignite
✔✔lamellar tearing - ✔✔a subsurface terrace and step like crack in the base metal with
a basic orientation para;;e to the wrought surface caused by tensile stresses in the
trough thickness direction of the base metal weekend by the presence of small
dispersed, planar shaped, non metallic inclusions parrallel to the metal surface
✔✔latency - ✔✔the time between first exposure to a substance and first appearance of
a disease (WHMIS)
✔✔material safety data sheet - ✔✔MSDS stands for:
✔✔metastable - ✔✔a relatively unstable, transient, but significant state or condition of a
chemical or physical system
✔✔Odour threshold - ✔✔The level in ppm at which most people will be able to smell the
substance
✔✔strain - ✔✔a measure of the change in size or shape of a body of material in relation
to its original size or shape
✔✔Vacuum Degassing - ✔✔ingot mold is melted in an evacuated chamber and then is
poured through a vacuum to suck out dissolved gases such as hydrogen and oxygen
✔✔yield strength - ✔✔the point at which a material begins to deform permanently
✔✔ faying surface - ✔✔the mating surface of a member that is in contact with or in
close proximity to another member to which it is to be joined.
✔✔joint - ✔✔the junction of the workpieces that are to be joined
✔✔supplementary welding symbols - ✔✔____ ___ are used to provide complementary
information to the basic elements of a basic welding symbol
