Exam (elaborations)
CSA W59-18 EXAM QUESTIONS AND ANSWERS
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CSA W59-18 EXAM QUESTIONS AND ANSWERS
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CSA W59-18 EXAM QUESTIONS AND ANSWERSCSA Standard W59 covers the welding requirements for what type of steel
construction? - Answers-(Cl. 1.1, 1.2) The welding requirements of CSA W59 can be
applied to carbon and low-alloy steel construction, except where other special codes
such as those of the API, ASME, or AWWA govern.
(Cl. 1.4) This Standard is not intended for use with steels having a minimum specified
yield strength over 700MPa (100,000 psi)
What types of structures are covered in CSA Standard W59? - Answers-(Cl. 1.1) CSA
Standard covers Statically- and cyclically- loaded (Repetitive loading) Structure. Clause
11 deals with provisions that are applicable to statically loaded structures only an d
Clause 12 deals with provisions that are applicable to cyclically-loaded structures only.
The provisions of Clause 3 to 10 are applicable to all structures.
What is the definition of low hydrogen? - Answers-Low hydrogen - A term applied to
consumables manufactured to deposit weld metal having a specified maximum limit to
the diffusible hydrogen content or to a process having inherently low diffusible hydrogen
levels.
Who is the engineer as described in CSA Standard W59? - Answers-Engineer - The
professionally qualified person representing the regulatory authority or the purchaser.
What Standard specifies the requirements for welding symbols? - Answers-(Cl. 3.4)
Welding symbols shall be shown in AWS Standard A2.4. Additional conventions
developed for CSA Standard are shown in Annex D.
What information is required on a design drawing? - Answers-(Cl. 4.1.1.1.1, Cl.
4.1.1.1.4 and Cl. 4.1.1.1.5) A design drawing should contain:
All information necessary for the preparation of fabrication and erection documents.
The effective throat thickness for partial joint penetration groove welds, fillet welds and
groove welds in skewed joints.
What typical welding information would you expect to find on an erection or detail
drawing? - Answers-(Cl. 4.1.1.2.1, Cl 4.1.1.2.2, Cl. 4.1.1.2.3, and Cl. 4.1.1.2.4) An
erection or detail drawing shall contain the following information:
Location, type, size, and length of all welds.
Distinguish between shop and field welds.
Identify groove welds as either CJP or PJP.
For partial joint penetration groove welds, the groove depths and joint preparations and
position for welding.
For skewed joints, the effective leg size for fillet welds and the effective throat for groove
welds.
Any notes required, e.g. welding sequence, control of distortion, etc.
, What requirements are specified in CSA Standard W59 to minimize the possibility of
lamellar tearing? - Answers-(Cl. 4.1.2.1, 4.1.2.2) Corner of T-joint detailscausing
through thickness tensile stresses resulting from welding under conditions of restraint
shall be avoided when possible. If this type of joint cannot be avoided, measures shall
be taken to minimize the possibility of lamellar tearing, such as the selection of using
single bevel or J-grooves, the prefered preparation is as shown in Figure 4.1 An nex Q
for additional information on lamellar tearing.
What are the types of welds as specified in CSA Standard W59? - Answers-(Cl.
4.1.3.1.1) Welds are classified as groove, fillet, plug, or slot welds.
What is a complete joint penetration (CJP) groove weld? - Answers-(Cl. 4.1.3.1.2) A
complete joint penetration groove weld is defined as one having fusion of weld and base
metal throughout the thickness of the joint.
What are the requirements for the certification of contractors? - Answers-(Cl. 3.1.1)
When mandated in the contract or in the governing design standard*, all contractors
performing work under this Standard shall comply with CSA Standard W47.1 for welded
fabrications.
*Examples: CSA S6 and CSA S16.
Which welding processes are covered in CSA Standard W59? - Answers-(Cl. 3.1.2.1)
This standard covers the SMAW, SAW, GMAW, GTAW, FCAW, MCAW, ESW, EGW,
and SW processes.
Does CSA Standard W59 specify requirements for stud welding procedures? -
Answers-(Cl. 3.1.2.2) Yes, Clause 6 and Annex H.4 contain provisions for stud welding
provisions.
Does CSA Standard W59 contain provisions for pre-qualified joints? - Answers-(Cl.
3.1.3.1) Yes, Clause 10 provides joint geometry details that are pre-qualified, provided
the welding procedures also conform to Clauses 4, 5, and 10 of CSA Standard W59.
There are pre-qualified joints for SMAW, SAW, FCAW, MCAW, (spray transfer mode)
GTAW, and GMAW (spray transfer mode and pulse transfer mode) processes.
What base metals can be welded under CSA Standard W59? - Answers-(Cl. 3.2, 3.2.1,
3.2.2, 3.2.3, 3.2.4) Clause 3.2.1 states that steel base metal to be welded under this
Standard shall conform to the requirements of the CSA or ATSM Standards listed in
Clauses 3.2.2, 3.2.3, and 3.2.4 or other recognized specifications of equivalent welding
quality as determined by the contractors engineer and approved by the engineer.
What is a partial joint penetration (PJP) groove weld? - Answers-(Cl. 4.1.3.1.3) A partial
joint penetration groove weld is defined as one having a joint penetration less than the
thickness of the joint.
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