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Hi everybody.
I am quite new in the field of oil and gas. My question is about interconnecting PIDs. In oil and gas refineries where there are various units, there are PIDs that show the coming and going of lines between units. I may be wrong but it is what I have understood. There are some rules in creating PIDs which dictates the necessary elements and data a PID must have. I'd like to know what interconnecting PID's exactly are and what elements must be shown in them. For example what must an interconnecting PID for Fuel Gas distribution contain? Must it show low pressure and high pressure fuel gas separatly? Does it just show only the operating lines or are lines with intermitten usage such as start-up lines shown? Does it just schematic or the order of branches on the header for various units is as well as they really are?
thanks a lot
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Interconnecting P&id
Started by luny, Feb 24 2010 01:01 AM
7 replies to this topic
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#2
fallah
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Posted 24 February 2010 - 01:56 AM
Hi everybody.
I am quite new in the field of oil and gas. My question is about interconnecting PIDs. In oil and gas refineries where there are various units, there are PIDs that show the coming and going of lines between units. I may be wrong but it is what I have understood. There are some rules in creating PIDs which dictates the necessary elements and data a PID must have. I'd like to know what interconnecting PID's exactly are and what elements must be shown in them. For example what must an interconnecting PID for Fuel Gas distribution contain? Must it show low pressure and high pressure fuel gas separatly? Does it just show only the operating lines or are lines with intermitten usage such as start-up lines shown? Does it just schematic or the order of branches on the header for various units is as well as they really are?
thanks a lot
As far as i faced with the issue in the projects,the general criteria of PID generation for units governs interconnecting PID generation.
Interconnecting PID for Process lines/Utility lines to be generated separately and depend on project volume PID of each group of utility lines being generated together.For example IA,UA (Air system)in one PID and DW,UW,SW,..(Water system) in another PID and.........
Hope above helps you out.
#4
luuquocdai
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Posted 25 February 2010 - 04:45 PM
Dear Luny
Please send me your email address, I will send you a file about this problem.
I think that it is helpful because we used it in many projects before.
Looking forwards the information from you.
Best regards.
Luu Quoc Dai
Email: luuquocdai@gmail.com
Please send me your email address, I will send you a file about this problem.
I think that it is helpful because we used it in many projects before.
Looking forwards the information from you.
Best regards.
Luu Quoc Dai
Email: luuquocdai@gmail.com
Edited by luuquocdai, 28 February 2010 - 06:42 PM.
#5
fallah
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Posted 26 February 2010 - 12:56 AM
Dear Luny
Please send me your email address, I will send you a find about this problem.
I think that it is helpful because we used it in many projects before.
Looking forward the information from you.
Best regards.
Luu Quoc Dai
Email: luuquocdai@gmail.com
Why you don't want to share your finding with all members in this forum?
#6
luuquocdai
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Veteran Member
Posted 28 February 2010 - 06:44 PM
Dear Luny
Please send me your email address, I will send you a find about this problem.
I think that it is helpful because we used it in many projects before.
Looking forward the information from you.
Best regards.
Luu Quoc Dai
Email: luuquocdai@gmail.com
Why you don't want to share your finding with all members in this forum?
Dear Fallar
I don't know how to share data in this forum.
Sorry about it. But can you intruduce how to do it?
#7
fallah
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Gold Member
Posted 01 March 2010 - 07:47 AM
Dear Luny
Please send me your email address, I will send you a find about this problem.
I think that it is helpful because we used it in many projects before.
Looking forward the information from you.
Best regards.
Luu Quoc Dai
Email: luuquocdai@gmail.com
Why you don't want to share your finding with all members in this forum?
Dear Fallar
I don't know how to share data in this forum.
Sorry about it. But can you intruduce how to do it?
Dear Luu,
You mentioned you have "...a find about this problem...." not data.If i were you i would share that find.But if you don't like to do the same,no problem.
#8
kkala
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Posted 01 March 2010 - 02:28 PM
[quote name='luny' date='24 February 2010 - 01:01 AM' timestamp='1266991918' post='36605']
I am quite new in the field of oil and gas. My question is about interconnecting PIDs. In oil and gas refineries where there are various units, there are PIDs that show the coming and going of lines between units. I may be wrong but it is what I have understood.
You are right in your understanding, these PIDs showing lines to connect Units are the interconnecting PIDs. Every line starts from the "BL" of a "Unit" PID and ends up to the "BL" of another "Unit" PID, often crossing several intermediate PIDs. All mentioned PIDs are interconnecting. "Unit" can also be (a group of ) tanks or a pump station.
There are some rules in creating PIDs which dictates the necessary elements and data a PID must have. I'd like to know what interconnecting PID's exactly are and what elements must be shown in them.
These are simple PIDs, with one difference: they are somehow "planimetric", that is they have an orientation on the plot plan (not on scale)so that you can go from one PID to the next by following the relevant line. The whole plant area is divided into several subareas, each one having its own interconnecting PID. All process lines of the plant passing from that subarea are shown on that interconnecting PID.
Utility lines are usually shown in a different set of interconnecting PIDs based on same logic.
For example what must an interconnecting PID for Fuel Gas distribution contain? Must it show low pressure and high pressure fuel gas separatly?
The fuel gas distribution lines should be shown on relevant interconnecting PIDs for all relevant subareas as above. Low pressure and high pressure fuel gas are in different lines, so these two lines shall be shown on the PID.
Does it just show only the operating lines or are lines with intermitten usage such as start-up lines shown?
All lines are shown including e.g. intermittent lines (like in all PIDs).
Does it just schematic or the order of branches on the header for various units is as well as they really are?
It can be considered as schematic, since there is no scale. But orientation withing one PID and between several (interconnecting) PIDs should be apparent. The branches of a header should show all connections in the correct sequence. A line leaving one PID at North side should meet this line of next PID at South side, same point on the sides. Same for West - East. Tanks, Units, pump stations may be shown as bloch diagrams to inform about their position and pipe connections.
Note Skillful draftsmen are required for making interconnecting PIDs. Over here new connections on the inerconnecting PIDs are made by Engineers. Isometrics are made after the interconnecting PIDs (usually one line per isometric drawing).
I am quite new in the field of oil and gas. My question is about interconnecting PIDs. In oil and gas refineries where there are various units, there are PIDs that show the coming and going of lines between units. I may be wrong but it is what I have understood.
You are right in your understanding, these PIDs showing lines to connect Units are the interconnecting PIDs. Every line starts from the "BL" of a "Unit" PID and ends up to the "BL" of another "Unit" PID, often crossing several intermediate PIDs. All mentioned PIDs are interconnecting. "Unit" can also be (a group of ) tanks or a pump station.
There are some rules in creating PIDs which dictates the necessary elements and data a PID must have. I'd like to know what interconnecting PID's exactly are and what elements must be shown in them.
These are simple PIDs, with one difference: they are somehow "planimetric", that is they have an orientation on the plot plan (not on scale)so that you can go from one PID to the next by following the relevant line. The whole plant area is divided into several subareas, each one having its own interconnecting PID. All process lines of the plant passing from that subarea are shown on that interconnecting PID.
Utility lines are usually shown in a different set of interconnecting PIDs based on same logic.
For example what must an interconnecting PID for Fuel Gas distribution contain? Must it show low pressure and high pressure fuel gas separatly?
The fuel gas distribution lines should be shown on relevant interconnecting PIDs for all relevant subareas as above. Low pressure and high pressure fuel gas are in different lines, so these two lines shall be shown on the PID.
Does it just show only the operating lines or are lines with intermitten usage such as start-up lines shown?
All lines are shown including e.g. intermittent lines (like in all PIDs).
Does it just schematic or the order of branches on the header for various units is as well as they really are?
It can be considered as schematic, since there is no scale. But orientation withing one PID and between several (interconnecting) PIDs should be apparent. The branches of a header should show all connections in the correct sequence. A line leaving one PID at North side should meet this line of next PID at South side, same point on the sides. Same for West - East. Tanks, Units, pump stations may be shown as bloch diagrams to inform about their position and pipe connections.
Note Skillful draftsmen are required for making interconnecting PIDs. Over here new connections on the inerconnecting PIDs are made by Engineers. Isometrics are made after the interconnecting PIDs (usually one line per isometric drawing).
