CSA W59 welding inspector level 1Exam Questions And Answers

CSA W59 welding inspector level 1Exam Questions And Answers 3.1 Contractors In the absence of specific requirements in the governing design standard , at the option of the engineer what other standards shall the contractor be certified too ? If no standard is required what shall the contractor prove ? - ANSWER -W47.1 The contractor must prove their compentency to the engineer. 3.1.2 Welding processes What processes are covered by this standard ? - ANSWER -SMAW, GMAW, MCAW, FCAW, SAW, ESW, EGW, SW Filler metals and allied materials are classified under what standard ? - ANSWER -CSA W48 What processes filler metals and other materials not covered under CSA W48? - ANSWER -Stud welding is not covered under CSA W48. It shall conform to the requirements of clause 3.1.2.2 Any welding process not covered by CSA W59 or not written into this standard shall be covered under the acceptance criteria of what other standard ? - ANSWER -CSA W47.1 3.1.3 Prequalified joints What processes are deemed pre qualified as long as they conform to what clause ? And therefore are approved for use with out joint welding qualification providing that welding procedures also conform to clause 4,5,10 - ANSWER -SMAW, SAW, FCAW, MCAW (spray transfer) and GMAW (spray transfer) as long as they conform to clause 10 shall be deemed as prequalified . 3.2 Base metal Steel base metal to be welded under this standard shall conform to what standard? *equivalent welding quality shall be established on the basis of composition and carbon equivalent - ANSWER -Steel material to be welded should conform to CSA or ASTM requirements What CSA standard shall steel base metal that is to be welded conform to ? - ANSWER -CSA G40.21 4.1 Design of welded connections Welded structures should be designed to permit what ? during construction - ANSWER -adequate accessibility Inspection requirements should be defined where ? - ANSWER -On the plans or in the specifications In the case of partial joint penetration groove welds. where shall it specify the effective throat ? - ANSWER -The design drawing shall specify the required effective throat Usually the weld symbol will dictate this by showing (CJP) or (PJP) in the weld symbol notes 4.1.3 requirements for welds What is the definition for CJP - ANSWER -Complete joint penetration What is the definition of PJP - ANSWER -partial joint penetration Define a flare groove weld - ANSWER -A flare grove is when one or both sides if the joint to be welded has a radiused edge. What must be done when corners of slots are provided for fillet welding ? - ANSWER - The corners must be fillet welded, and the welds shall extend completely around the periphery of the slots. Unless specified or approved by the engineer What is the range of angle that fillet welds may be used in CJP joints - ANSWER - 60deg - 135deg angles less than 60 shall be considered PJP joints angles more than 135deg should not be relied upon to transmit calculated loads What can plug and slot welds be used for in lap joints ? - ANSWER -They can be used to transmit shear force or prevent buckling and separation of lapped parts. 4.3 effective weld area, length, throat and fillet size Where is the effective throat measured for shearing forces of a PJP groove weld reinforced with a fillet weld. - ANSWER -It shall be measured at the shortest distance between the root of the groove and the surface of the fillet. Less 3 mm (1/8) where such reduction is required by clause 4.3.1.4 When can groove welds be considered CJP groove welds ? - ANSWER -Only when they are welded with a backing bar When flare bevel groove welds are made with a backing bar what would be the thickness of the effective throat ? - ANSWER -The effective throat should be equal to the lesser of the thicknesses of the material being welded. What should be considered the thickness for a PJP flare bevel groove weld in a butt joint? - ANSWER -Shall not be greater than the wall thickness of the HSS member or 60% of the thickness of the planar edge. What is the maximum a fillet weld T-joint can have for a radii until it is considered a flare bevel? - ANSWER -T-joint edges with radii less than or equal to 10mm (3/8) can be considered fillet welds but are referred to as flare bevel fillet welds. When is it not necessary for flare bevel groove welds in T-joints to not be flush with the tangent of the curve that is perpendicular to the horizontal planar ? - ANSWER -When the radii measured is greater than 10mm (3/8). *The welds may be entirely with in the flare, flush with it or extend beyond by means of a fillet. What is the design factor of each process for specifying the effective throat. - ANSWER -SMAW , factor & = 1.7 SAW,FCAW-G,MCAW and GMAW, factor & = 1.5 Where should the effective throat and weld face width for a flare bevel be indicated on the welding symbol? - ANSWER -The effective throat should be in brackets to the left of the flare bevel symbol. The weld face width should be noted below the flare bevel symbol What is the obtuse angle from the cross section of the fillet weld face to the horizontal planar surface? - ANSWER -The angle of the fillet weld face to the horizontal weld surface shall be greater than or equal to 90 degrees and no more than 140 degrees What is the effective throat for flare bevel grove T-joints welded flush to the edge of the radii? - ANSWER -The effective throat can be figured out with 0.3 x Radii of the rounded edge. What is the minimum effective throat size for flare bevel groove T-joints ? - ANSWER - Minimum effective throat is 0.25 x Radii of rounded member. What is the range of effective throat for flare V groove welds? - ANSWER -The effective throat is 0.5 X Radii of rounded member and cannot be smaller than 0.3 X Radii 4.3.2 Fillet welds