API 577 Exam Questions And Answers Graded A+
None! Number of welds to RT is established by the primary code
How many welds does 577 require to be RT'd
Arc blow
Deflection of an arc from normal path because of opposing magnetic forces
Arc length
Distance from the tip of the welding ele...
API 577 Exam Questions And Answers Graded
A+
None! Number of welds to RT is established by the primary code
How many welds does 577 require to be RT'd
Arc blow
Deflection of an arc from normal path because of opposing magnetic forces
Arc length
Distance from the tip of the welding electrode to the adjacent surface of the weld pool
Autogenous
Welds made without filler metal
Backing
Material or device placed on back side of a joint, to support and retain weld metal
Defect
A discontinuity that does not meet acceptance criteria, term designates rejecability
Discontinuity
The interruption of the typical structure of a material, discontinuity not necessarily a defect
Inclusion
Entrapped foreign solid material, such as slag, flux, tungsten, or oxide
Undercut
A groove welded into the base metal adjacent to the weld toe or weld root and left unfilled by weld
metal
Based on nature of the non-conformance
Corrective action of non-conformance
SMAW
Which welding process is most widely used
SMAW process
Arc between a covered electrode and weld pool. Heat of arc comes from tip of a consumable covered
electrode. Shielding comes from decomposition of the electrode coating.
SMAW (basic functions of electrode coating)
Shielding gas, prevent excessive grain growth, slag blanket to protect weld, sometime provides alloy
elements
, GMAW-short circuit
Which welding process is "fast freezing and prone to have LOF"
GMAW-spray transfer
Which welding process uses a direct stream of discrete drops
Essential & Non essential, Supp Essential when toughness testing required
Variables required on WPS
Essential, non essential are optional
Variables required on PQR
Manufacturer or contractor (owner of procedure)
Who supervises the testing of PQR coupon (per section IX)
Base metal, filler metal, fluxes & gases
What are welding materials
To reduce # of PQR's
What is the purpose of P-numbers
Usability characteristics
What is the basis for F-numbers
Qualified with all electrodes with the same F-number, with CS also qualifies with other F-numbers
A welder who qualifies for a specific F-number is also qualified for what
Titanium
What alloy is P-53
Analysis of chemical composition of the weld
What is the A-number
Warm holding ovens
Some electrodes are stored in
Separate from other electrodes
Low hydrogen electrode storage
Discard
What to do with wet fluxes or electrodes
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