Chapter 1. Installing Pipe Nozzles
12 T5 Flare Gas Transducer Installation Guide
1.2.5 Installing the Second Welding Boss (cont.)
3. Remember to orient the boss in the jig to maintain the proper contour location to the pipe for installation.
4. Place the spacer flange on top of the welded nozzle and then mount the second end of the alignment plate on
top of the spacer flange. Bolt the alignment plate into position with the remaining bolts.
5. The second welding boss should now be positioned over the second nozzle location scribe marks. Align the boss
scribe marks with the pipe scribe marks, and then tighten all of the nuts securely.
6. Check the boss alignment again, then tack weld the boss in each of the four grooves between the boss scribe
marks.
7. After tacking, check the boss alignment once more. If the boss is misaligned by 0.02 in. (0.5 mm) or more, remove
the boss by grinding off the welds, and then reinstall the boss.
8. Remove the threaded rod and the jig. Leave the alignment plate bolted to the first nozzle, with the spacer flange
sandwiched between them.
Jig
Spacer
Flange
Welded
Nozzle
End View
Top View
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