Flashcard · Fabrication
What decides when a line-up clamp may come off?
How much of the root bead is complete, under the standard's rule as the procedure applies it.
API 1104 22nd ed., joint preparation for production welding: line-up clamps
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- What decides when a line-up clamp may come off?
- How much of the root bead is complete, under the standard's rule as the procedure applies it.API 1104 22nd ed., joint preparation for production welding: line-up clamps
- What is the risk of pulling a line-up clamp early?
- Cracking the root bead.API 1104 22nd ed., joint preparation for production welding: line-up clamps
- What must be done to each bead before the next?
- Clean off slag and scale.API 1104 22nd ed., joint preparation for production welding: cleaning between beads
- Why may the time between the root and second bead be limited?
- A delay can let the root crack. The procedure may set a limit.API 1104 22nd ed., qualification of welding procedures: time between passes
- Bad weather on the right-of-way. What applies?
- Welding stops when the weather would harm the weld, unless the joint is protected.API 1104 22nd ed., joint preparation for production welding: weather
- The joint is below the procedure's preheat. What happens?
- Welding waits until the joint reaches the procedure temperature.API 1104 22nd ed., joint preparation for production welding: preheat
- Why is each welder's work identified?
- So a rejected weld can be traced to the welder.API 1104 22nd ed., joint preparation for production welding: identification
- Pipe ends arrive with a damaged bevel. What is done?
- Repair or re-prepare the bevel to the procedure's joint design before welding.API 1104 22nd ed., joint preparation for production welding
- Electrodes have been rained on. Use them?
- No. Damp or damaged consumables are not used.API 1104 22nd ed., specifications: filler metal storage and handling
- What is checked about alignment of pipe ends?
- That high-low stays within the standard's limits and is spread around the joint.API 1104 22nd ed., joint preparation for production welding: alignment
- Is joint design part of the procedure?
- Yes. Bevel angle, root face, root opening and joint type are recorded in it.API 1104 22nd ed., qualification of welding procedures: joint design
- What is the repair path?
- Classify against the acceptance standards, authorize where required, use a qualified repair procedure, confirm removal, reweld, reinspect.API 1104 22nd ed., repair and removal of defects