We have a Gas Chiller with a stamp that reads Temperature -50/150 Pressure 100/250 REST pressure 350 psig. The vessel is dated 1981, I know it isnt SA214 that had serious issues with low temperature. Since the chiller fluid is propane and the minimumtemperature cant really get to -50 without...
our new field construction manager, having only build pipelines under B 31.8, has a new idea for testing refinery piping he is working on. The person is building all the piping on the pipe racks and doing 100% xray. After the lines are complete, they will dismantle all the pipe and rejoin it...
I'm looking for a 50 gpm 1 to 2 feet head water pump. I was hoping to find a screw type to power in a ditch and raise the water up to a new ditch that I could use with a small solar panel. Once i find the pump, the conversion to solar is not a problem.
My colleagues and I remembered seeing a video, well an 8mm film, of a lab where they had glass tubes to show you what happens in multiphase flow.
One of the most interesting was the split flow. When a two phase flow in a line comes to a tee branch the flow can go straight, or take a 90 turn...
the Internet is going wild with non engineers claiming to know that they know how to fix the BP blow out. I have been trying to tell non-engineers that the hydraulics of oil coming from 500 feet deep are such:
5000 feet of salt water has about a 2500 psi at the wellhead. The oil, if captured...
as usual I always get the tough problems, well at least in my area.
A collegue has a cliant in Ireland that is interested in buying a new surplus packaged gas treater in the US and ship it to Ireland.
The packaged unit has pressure vesels and piping. The original U1A's and MTR's are...
As a PE I'm very aware of ethics and am required by my jurisdiction to take continuing education. But the message from the industry is just terrible I am to sensitive or are other caught like me. Here is the problem.
I recently submitted a bid to supply equipment and services along with...
I first came across some old (circa 1950's) distillation columns that had the water exchangers on top of the column. Water was pumped up to them and the condensed (iso-pentanes) just gravity flowed back to the column.
I then came across a similar deethanizer column with a intergal chiller. The...
I have always been taught that backwelding threaded pipe actually does more harm than good. If you cut and make the threads per ASME B1.20.1, then back welding should not be required. The theory I was told was that the welding just creates a heat affected zone and you end up with lower strenght...
I've reviewed all the DOT papers and guidance and interpertations on the demarcation where a DOT pipeline starts and where the OSHA/EPA regulated plant ends.
Heres what I get. We have a seperate overpressure protection system with a pilot operated valve that isolates the pipeline just upstream...
Does anyone out there clasify natural gas piping as either lethal or severe cyclic service duty. Or, is a reciprocating compressing triggering a severe cylic service on all the piping connected to it?
I'm being told by a vendor that if we use a static var device that we can start very large (1000HP) motors across the line and the power company would not see droop on their system. I can't imagine that the rack of capacitors could be big eneough or if big enough, it would be cheaper to install...
As viewers know, i'm a skeptic on wierd stuff coming out (radio frequecy to burn water). Our local news paper had an editorial on this link and NREL. http://www.stirlingenergy.com/whatisastirlingengine.htm
Through out the literature they quote effiecies of 25% to 29% for conversion to...
We have a vessel in cryogenic service at our plant. The vessel has 8" insulation. For some reason back in the 80's when it was installed, someone took the name plate off because it was going to be covered with insulation. A seach of the facility has not turned up the name plate. The vessel...
I don't have all the details so I'm just checking on a proceedure needed to accomplish the following. I have an air cooled exchaner rated at 1050 psig AT 650F. I want it in a new service rated at 1150 psig at 250 F. Can I redo the calculations for the box and nozzel with the stress allowed by...
I don't have all the details so I'm just checking on a proceedure needed to accomplish the following. I have an air cooled exchaner rated at 1050 psig AT 650F. I want it in a new service rated at 1150 psig at 250 F. Can I redo the calculations for the box and nozzel with the stress allowed by...
We need to pump brine into several disposal wells over a long time period, say 4 years. We need to move the lines every 3 to 6 months. The brine is saturated but has never been in contact with air so O2 should be in ppm range. The pressure is 300 psig. I've look at fiber glass, polyethylene...
We need to pump brine into several disposal wells over a long time period, say 4 years. We need to move the lines every 3 to 6 months. The brine is saturated but has never been in contact with air so O2 should be in ppm range. The pressure is 300 psig. I've look at fiber glass, polyethylene...
