Welding P5A-P5A GTAW/SMAW High Humidity
Welding P5A-P5A GTAW/SMAW High Humidity
(OP)
Need some help here guys. Working down in the Dominican Republic watching a pipe spool replacement. 10" sch 160 P22 joint. Pressure above 2000 and temperature probably close to the calculated maxiumum allowable for the material. Welding performed by locals without a whole lot of experience welding anything other than cs.
Tig root, smaw fill, electical resistance pre-heating, stress, RT.....were doing it by the book. My concern here is with the extremely high humidy effecting the dryness of the electrodes. Its like 90% humidiy when it isnt raining with no change coming for at least several days.
Is this a concern? Using Linclon H4 rods with mill certs from hermicily sealed containers, rod ovens....
I am almost temped to use tig for the whole joint but thats going to take forever.
Advisement appreciated
Tig root, smaw fill, electical resistance pre-heating, stress, RT.....were doing it by the book. My concern here is with the extremely high humidy effecting the dryness of the electrodes. Its like 90% humidiy when it isnt raining with no change coming for at least several days.
Is this a concern? Using Linclon H4 rods with mill certs from hermicily sealed containers, rod ovens....
I am almost temped to use tig for the whole joint but thats going to take forever.
Advisement appreciated





RE: Welding P5A-P5A GTAW/SMAW High Humidity
Sounds like all bases are covered with using H4 electrodes and rod ovens. Unless you have RT rejects, continue on.
RE: Welding P5A-P5A GTAW/SMAW High Humidity
RE: Welding P5A-P5A GTAW/SMAW High Humidity
and long extension chords so no excuse why the caddy is not warm.
RE: Welding P5A-P5A GTAW/SMAW High Humidity
We make sure each welder has an individual rod carrier either plastic or leather.
RE: Welding P5A-P5A GTAW/SMAW High Humidity
You could get a weld joint finished quicker with two welders on the joint. It reduces heat exhaustion from the pre-heat 350 deg F.(or as called for in WPS)
There was one construction superintendent that called it, "brother-in-law" welding.