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...
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...
Hello all,
1. Is their a minimum MAWP or design pressure that classified a vessel as pressure vessel?
2. I have worked with a lot of suppliers that IN THE PAST have built vessel "in accordance with ASME", as opposed to ASME stamped, is the stamp a code requirement or is it an operations...
Hello,
Is there a way to retrofit a HDPE line with tracer wire or a practice and/or technology that can be applied if such a line was installed without tracer wire?
Thank you for your responses.
As much as possible, do it right the first time...
Hello,
I am looking for on direction on how to do a dispersion analysis; for PSV relief (or tank hatch). Intent is to incoporate this into spacing of equipment and possible ignition source.
Any rule of thumb, document/standard/code, or general direction to start from?
Thank you.
As much as...
Hello,
When a compressor goes down or stops running, it seems the fuel gas or start gas continues to flow, does the compressor have an inbuilt system that stops taking the fuel gas or start gas? Some other engines have fuel injection systems that are run by the running of the engine (or part of...
Hello all,
This facility is for oil and gas production (upstream and midstream type facility). If the facility is finished and production was delayed or fluid/product is not flowing yet, for weeks or even a couple of months. Hydrotest water have been dried out, etc. Is it okay to leave the...
Hello,
I am writing a reference that contains math and engineering diagrams and equations. Word equation editor is good but very slow, and diagrams can also be long using visio or other tools.
For the purpose of equations and diagrams, can anyone recommend a tool that may be quicker and easier...
Hello,
We have API 12F tanks that operate from 1 to 12 ounce/sq-inch, trying to measure the vent gas to the flare at such a low pressure, any experience with measurement device at such low pressure?
As much as possible, do it right the first time...
Hell,
This question is for US onshore oil and gas production facilities and gathering flowlines.
For lines that are typically in the middle of nowhere, and in ranches where there are barely any houses. We use ASME B series as the governing code for our tank batteries and pipelines (31.3, 31.4...
Very often they are written as NACE MR-0175/ISO-15156, I that an "or" or are they really just the same document?
As much as possible, do it right the first time...
Hello,
for FBE coating, we use Denso Protol 7200 for field repair
for ARO coating, I have a couple of questions:
1. If Powercrete R95 a suitable coating repair/replacement in the field?
2. For the ARO, is it recommended to coat with Denso 7200 before applying the powercrete, if powercrete is a...
Hello everyone:
GAS: for short (50 to 400 feet) run of gas lines, especially in low pressure applications (50 - 150 psi), is formulas like Weymouth equation suitable if one knows the source pressure and deliver pressure (e.g. from a separator to compression suction)? or is there a better...
Hello,
I have a produced water tank (from oil and gas well) as shown in the attached diagram. This is a tank built to API 12F, MAWP 16 ounces/sq inch.
LIQUID INLET; is the liquid dump from a low pressure vessel
LIQUID OUTLET: pump at the grade level to pump the water to a pipeline
GAS OUTLETS...
Hello,
When a buried pipe is externally coated, is cathodic protection (sacrificial anode) still required?
and if it is, is it okay to limit the coated area used for calculation of the weight to the "estimated" bare pipe or all the pipe?
Thank you
As much as possible, do it right the first...
