As far as I am aware, there are two different codes that can be used for buried pipe design underneath a road crossing: API RP 1102 for Steel Pipelines Crossing Railroads and Highways AND ASCE Guidelines for the Design of Buried Steel Pipe.
I am having trouble coming up with any major...
Thanks LittleInch,
You seem to always have sound advice. So I appreciate your comments as an avid forum-lurker.
I will look in to both of these options more in detail. At first glance, the polyolefin only protects to 230F (on-shore) and 285F (off-shore). I am not sure what the driving...
Hello all,
I am in the process of looking for a product to use as corrosion / moisture protection on a steel pipeline at the air-to-soil interface. The line will be running at approximately 240+ Deg. F filled with decant oil. The pipe will be covered with a polyurethane thermal insulator...
I recently helped design one of these. You will be welding "bars" in to a pup piece and then welding the pup piece to the "teed" section of pipe forming your tee. There's no true standards to help guide you during this.
A couple issues we ran in to were:
1) fabricating and cutting the bars...
I work for a relatively large employee-owned company. We also expect our employees to help find their own work, but that by no means meant that employees are expected to find ALL of their own work. You may ask for someone to redefine what they meant by it.
I've worked here close to a year and...
The flow is from 0.375" to 0.500" - wall thickness gets larger (aka ID gets smaller in the diretion of flow). I haven't gotten as far with the valve - I am attempting to get in contact with the valve manufacturer to see their recomendations as well.
Their cut sheet has the nominal bore of...
All -
I'm preparing to order a through-conduit gate valve (24") to replace in a 24" line. On the downstream side the wall thickness is STD (0.375") on the upstream side of the valve the pipe is XH (0.500").
Since the bore of the line is changing, do I need to make any special considerations...
All -
I am currently in the process of designing a piping system that offloads LNG from a railcar. The simplified version of this is that I have an 8" pipe with a swivel-arm setup that can attach to the railcars as they approach to offload. I am currently creating a stress analyis model...
I just moved cities myself. This will be the 3rd time in 5 years, so I'd like to think I've gotten pretty good at it. The key to enjoying any place is determining what makes YOU happy and meeting the right people. You seem to be striving to find some social connections - so I'm going to...
In my experience, typical installation temperature is 70 deg. F while the operating temperatures depend on your aparatus. In Ethanol lines I've seen weather temperatures applied for the area which were something along the lines of 0-120F, but for a heated butane vapor line I've seen up to 220F...
In my experience, operating pressures are not the driving cause for increasing resultant stresses in most cases - generally the highest stresses are going to occur during your Gravity+Temperature(Max,Min) cases.
I'm under the impression that you should ALWAYS negotiate offers. Like you said, the worst case scenario would be that they say no. You won't ruffle feathers or get off on a bad foot if you do it in the correct manner. In fact, you may even show that you are a "go-getter".
I'm making the...
Is this an opportunity that you already have on the table and are thinking about accepting?
My experience is that it is incredibly hard to switch from any field in to the Oil and Gas production side of things. Facilities may be a little easier, but I know that the completions/reservoir...
We are going to talk with the client today about possible options. They've already stated that they don't like the idea of using a 24" valve and that they can't bury ball valves. This replacement is sort of like pulling teeth at this point, eventually an option will have to be decided upon...
The only thing we know is that they have to replace the valve. They said it is entirely not functioning currently.
They requested that we replace the valve because according to the company's specs they have to have positive isolation before leaving their lease.
I'm all for just scrapping the...
The 22" valve that is being replaced is some unknown distance off the launcher (most likely in the neighborhood of 50-100'). It's an isolation valve before the line goes off-site.
I think their preference is to use Gate valves, although one of the options we're going to present is swapping to...
I'm running in to the following problem:
I've been asked to replace the old valves on a 22" Pigable liquid line. Currently they are using 22" Slab Gate Valves and they were wanted to replace the valves with essentially the same setup.
The problem is that it seems 22" Gate valves are quite...
