Littleinch - you're right, the snow and ice don't stay around long on insulated steam piping, but any components I add will need to consider them. I have browsed the pipe bridge websites, I'll pursue that with a couple providers and see what light units cost.
Interesting, I might be able to make that work with the right cable and a ring every ten feet or so. I have to run about 400 feet through mostly open space, in that 400 feet there are structures for old chip lines about 50 feet apart. Trying to run almost horizontal, 1/4" per foot slope just...
That's wild, Kevin. Unfortunately this is for steam, so arched spans aren't practical from a condensate management point of view, and pipe deflection versus pitch need to be managed as well. We have chip blowlines that are up to 36" diameter, thin wall but have stays and guy-wires so they span...
I have a paper mill client that wants to replace about 750 feet of underground 3" steam piping with above-ground piping. One problem is that the structures he has available to hang pipe from are mostly 50 to 60 feet apart. I've been looking for either light pre-fab pipe bridges or some...
Thanks for the responses. Actually I had the original manufacturer check the shell rating, they came back and said it was good for 3 psig vacuum only. And yes, I used the latent heat of vaporization of the vapor to get to the timing. It makes sense when you cosider how little mass is in the...
I have a client that has an old shell and tube condenser that is not rated for full vacuum on the shell side. Based on the operating conditions, I've determined that the vapor mass could condense in about 1 second if the shell side were closed in and the cooling water left running, requiring...
I have a client that would like to decommission an old distillation column; it's unused and he wants to get it off his annual inspection list. I'm contacting my state boiler inspector for his input, but I'm surprised that I can find nothing in BPVC Section VIII or online on how to do this...
Thank you for the responses. Here's a sketch of the situation. In my stress analysis program I don't have the option to post this as an offset force and let it figure it out, so I need to input both force in the Y-direction and moment. Is it this simple - post the vector forces in the Y and Z...
I'm doing some analysis on a 24" steam line, it has an 8T10 safety mounted on top, side exit perpendicular to the pipe run with a 10" elbow turning vertically up and dumping into a 12" drip pan elbow. I calculated the API 520 Part II thrust force, and was just going to apply the moment created...
I noticed an unsuccessful search for this paper and had a copy, so I thought I'd post it. Even with Bodenheimer's help and 30 years experience, I find MC stock piping systems a continuing challenge to get...
Thanks, but that's kind of a generic response, I was hoping for something more specific from someone with direct experience with this manufacturer. All these high-performance butterfly valves are manufactured to meet API 609, API 598, API 607, MSS-SP-68, so theoretically they're tested far...
Anyone have any experience with these valves? I've been partial to a couple other log-standing manufacturers' high-performance butterflies, but I have vendors starting to quote these as a lower cost option.
Thanks for any feedback.