Hi All,
There is a 3 phase separator with oil bucket and water weir "accidentally" set at the same level. The water weir is supposed to be a bit lower to let water enter the water chamber from under the bucket. Have anyone experienced this and how did you solve it...How can one solve this...
Tried attachement again, I believe it should work this time. Sorry about that.
As much as possible, do it right the first time...https://files.engineering.com/getfile.aspx?folder=a80e8e45-ed5f-4eaf-abce-bd039a1c628c&file=B_block_bleed.pdf
Hello all,
In the attached drawing, there is a control valve with isolation valves on either side of the control valve. A bybass is used to continue to flow gas if the control valve is to be maintained or worked on. each of the isolation valves have bleeds to bleed off pressure before working on...
Hello, The min thickness for PWHT to be required used to be 3/4 inches. I only have the 2012 version of the document. Has it increased? I saw a document where 0.98 inches was required as minimum, but there was no reference. Has it changed from 0.75 inches?
Thank you in advance
As much as...
Hello,
when you know the oil specific gravity, expected percentage water content (i.e., mostly oil), OD and lenght of the heater treater, expected heated temperature, specific gravity of the water, etc. What is the equation to estimate the barrel per day for a horizontal heater treater (or a...
Hello,
Is there any requirements for pipe material to be PSL2 in the process, gas, or liquid pipeline codes? if so, any reference will be greatly appreciated.. Thank you
As much as possible, do it right the first time...
Hello,
sometimes during gas hydraulic calculations, one may meet the recommended velocity margin, but the pressure drop may be a bit on the high side, other time, one may get the pressure drop per 100feet just right, but the velocity may be lower than typical recommendations.
Because the source...
@1503-44, Yes sir, it was one of those MOCs that was not MOC'ed. installed without consent, lesson learned.
and about my last post, I meant to say "...50psig can now be seen upstream of both the new and existing problematic check valve"
As much as possible, do it right the first time...
Thanks for all the post.
The suspicion was correct. we put another line of just 4" parallel to the existing one with a regular full check valve and the 50psig can not be seen upstream of both the new and existing problematic check valve. Therefore, the check valve had too small opening and...
@Danschind. I agree, the 50 psig is the responsibility of the control valve to the compressor. The dilemma is, that 50 psi should be able to keep the line upstream of the check valve relatively low too. Hence the suspicion that the check valve and its small opening and flapper is causing that...
Thanks for all the response:
@danschwind: yes, upstream and downstream of the check valve, we just happen to have gauges at those points. the gauge downstream of the check valve (which is upstream of the control valve) is the same as the one downstream of the control valve, i.e., 50 psig. But...
SORRY, HERE
As much as possible, do it right the first time...https://files.engineering.com/getfile.aspx?folder=347c3ef6-542c-4833-a78d-e82cea6c3d05&file=WAFER_CHECK.pdf
Hello,
I have never used a wafer check valve before. My Operators used it for the first time on a line feeding the suction of a compressor for natural gas (not dehydrated yet).
The suction control valve is set at 50 psig (or the suction pressure is 50 psig), this keeps the suction header at 50...
Hello,
For liquid: Most of the equipment that I have seen operate in pressures where the DP will almost always yield critical flow. My question is, if the P1 and P2 across a liquid control or dump valve create critical flow and the downstream vessel can not be operated at a higher pressure to...
