Chapter 1. Installing Pipe Nozzles
8 T5 Flare Gas Transducer Installation Guide
2. Clamp the boss in place, using a pipe strap or equivalent, so that it cannot move during tack welding.
3. Check the boss alignment again, and then tack weld the boss in each of the four grooves between the boss
scribe marks. Make sure you keep the boss contour flush with the pipe contour during the entire tack welding
operation. The boss is constructed of carbon steel.
4. Check the alignment again. If the boss is misaligned by 0.02 in. (0.5 mm) or more, remove the boss, grind off the
welds and reinstall the boss.
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