Que?
"I've actually performed quite a few hot taps on pressurized lines myself, and the procedure you suggest isn't valid.
Being a welder, along with your active imagination and a $1, will get you a cup of coffee in most truck stops. To perform a hot tap, you NEED some very specialized and expensive equipment not available at your local Rental City. So stop blowing smoke and take a chill pill. I'm sure that you think your next in line to the Prince of Darkness, but I'm here to tell you you're not even in the same ballpark...
Have a nice day."(subsea06)
Not quite sure what your talking about, pal, "Prince of Darkness" comment and all. Also, I never described the "hot tap" procedure I witnessed on a 8" water main recently. It was actually quite simple. The water company used a specialized drill bit. It had a drill bit on the tip which was hollow, after that it had a tap, as in tap and die to cut some threads, after the tap was a valve in the off position, after that was a length of pipe which was plugged into the drill. The whole mess was spun into the pipe, the tap bottomed out, a little water came out, the drill was detached and a pressure gauge was attached. At this point there was a little weeping around the now emmbedded tap section. It was welded in place and the leakage stopped. We opened the valve and we could now see how much pressure the mistery pipe we were working on had in it. It took 5 minutes. I doubt there was much pressure dropage in the line. We could have used that "port" to pump in whatever we wanted.
I am chill, I was wondering what the BS part was? Remember we are talking H2O pipes here, not NG, oil, explosive, etc.
Also, please lose the attitude and name calling, we are all on the same team here. I'm not blowing smoke (though I am having a cig right now). I found an odd post and brought it here. Not looking for confrontation, just analysis, and some FR-iends. I don't recognize your screenname either.
Good evening to you.
...........having a cig right now.............
LOL...........me too.
We, choke choke, are a dying breed. Literally, but isn't everyone.
Sorry, Imp. I was posting to 'CNR'.
The procedure you describe is closer to reality. A hot tap machine is required.