Vent and drain
Vent and drain
(OP)
Hello everyone, is there any rule of thumbs about the clearance of one vent pipe or drain pipe to another in liquid pipeline system? How far we must put one vent pipe or drain to another one?
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
|
RE: Vent and drain
**********************
"Pumping accounts for 20% of the world's energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: Vent and drain
RE: Vent and drain
**********************
"Pumping accounts for 20% of the world's energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: Vent and drain
RE: Vent and drain
**********************
"Pumping accounts for 20% of the world's energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: Vent and drain
RE: Vent and drain
**********************
"Pumping accounts for 20% of the world's energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: Vent and drain
RE: Vent and drain
I2I
RE: Vent and drain
**********************
"Pumping accounts for 20% of the world's energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: Vent and drain
RE: Vent and drain
I don't believe you need any vents or drains in the line, but, I have certainly not seen your PFDs. I just highly doubt it. Near metering or sampling or in various segments of the plant near pumps, for FREQUENT maintenance purposes you might want to install drains running to a closed hydrocarbon-oily water drain system. You may also need small temperature expansion PSVs in segments of the line that can be blocked and exposed to fire or other high temperatures to run to those drains. Those should be located only at low points. Vents may be needed at pig launchers and some other locations where air must be removed from the launching barrel, or where segments of pipe must be removed frequently for operation purposes, not for infrequent maintenance.
**********************
"Pumping accounts for 20% of the world's energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: Vent and drain
I don't how the vent and drain points have any relationship with potential thermal expansion. The tank should be designed with the proper venting system that applies and if the piping system in question has the potential to be blocked in and over pressured a thermal relief valve and piping system needs to be developed. In my experience, this should be developed by a process engineer.
RE: Vent and drain
RE: Vent and drain
RE: Vent and drain
Locate your 3/4" drains and vents on threadolets for hydrotest at high and low points within each test section and Hex Plug them when you're finished.
**********************
"Pumping accounts for 20% of the world's energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies) http://virtualpipeline.spaces.live.com/