Chapter 1 Flashcards
Contractor
Includes the primary contractor and any subcontractors engaged in work covered by this standard.
Company
The owner company or the engineering agency in charge of the construction
Weld
Refers to the completed weld joining two sections of a pipe, a section of pipe to the fitting, or two fittings.
Qualified welding procedure
A tested and proven detailed method by which sound welds with suitable mechanical properties can be produced.
Welder
A person who makes a weld.
Qualified welder
A welder who has demonstrated his ability to produce welds that meet the requirements
See section 2 or 3
Root bead
The first or stringer bead that initially joins two sections of pipe, a section of pipe to a fitting, or two fittings.
Position welding
Welding in which the pipe or assembly is held stationary.
Roll welding
A welding in which the pipe or assembly is rotated while the weld metal is deposited at or near the top center.
The term “shall” and “should”
Shall - indicates a mandatory requirement
Should - indicates a recommended practices
Automatic welding
Refers to an arc welding with equipment that performs the entire welding operation without manual manipulation of the arc or electrode other than guiding or tracking and without a manual welding skill requirement of the operator
Semiautomatic welding
Refers to arc welding with equipment that controls only the filler-metal feed. The advance of welding is manually controlled.
Internal concavity
A bead that is properly fused to and completely penetrates the pipe wall thickness along both sides of the bevel, but whose center is somewhat below the inside surface of the pipe wall.
Magnitude of concavity
Is the perpendicular distance between an axial extension of the pipe wall surface and the lowest point on the weld bead surface.
Repair
Is any rework on a completed weld that requires welding to correct a fault in the weld that has been discovered by visual or nondestructive testing and is beyond this standard’s limits of acceptability.
