I remember working with a young student engineer years ago. He was charged with preparing test packs for hydro and was having some difficulty with some of the symbols so he would ask me, a pipefitter. One day I asked where his pipefitter’s handbook was. He told me he didn't have one and had never heard of such a thing. On my next days off, I picked up a handbook and took it back to work with me and I gave it to him. When he started to look through it he quickly realized that all the things he had been asking were contained within the pages of the book. He looked at me and asked, "So why don't they tell you to get one of these in University?" I told him I didn't know. In any event, he was always referring to it from then on. One day he asked me how he could find something in the plant. I told him to use the northerlies and easterlies. Again, a blank look. I asked if he had ever been told about them and he said no, he hadn't. I told him to reserve a couple of hours that afternoon and we would take a couple of isometric drawings out and I would show him how to use the coordinates shown on the drawings. He very quickly learned how to use those drawing coordinates to find what he was looking for and thanked me for my assistance. When I left that job, I never expected to see him again but as fate would have it I ran into him about ten years later on another site. He was sitting at a desk in an office he shared with a student engineer when I walked in. On the top of his desk was a very dog-eared pipefitters handbook and I laughed when I saw it and commented that he still had it. He laughed and told me he never went to site without it. Just then his office mate came in and he introduced me. He told his office mate show me what he had given him. The student engineer reached into a desk drawer and pulled out, you guessed it, his own personal handbook. I asked if he found it useful and he said he couldn't do his job properly without it. I looked back to my friend with a grin and then he said to me with a smile, "We are not too busy right now. What do you say we grab some Iso's and take him out and show him how coordinates work." We did and it was a great afternoon. I guess that is why some teach for a living. It is very gratifying to see what happens when your charge grasps what you take for granted…………
Can I have the name of this handbook? Now, I'm a young student engineer. Maybe in the next few years, I would like to be the same character like the man in your story. vantonnguyen1997@gmail.com You can send to my email, Sir! Hope you will help me. I love sharing knowledge to the others
Very good story and as young engineer i can confirm that in one year working in company you learn much more than in 4 years university. Teachers are recommending dull books and do not teach some crucial things.
As a retired Journeyman Electrician, teaching is/was part of our job. It was my pride and joy to enlighten apprentices and watch their faces light up with every little trick of the trade. I remember each and every one of the men that helped me when I went through my apprenticeship. To teach is to touch lives forever.📖💪
I remember learning this stuff in College last year. A lot of us would get confused between P&ID and PID Control (Proportional, Integral & Derivative). Now it doesn't seem so confusing thanks to gaining work experience.
Shaine MacDonald I’m only in my junior year so I haven’t learned any of this stuff yet, but I just started a Co-op at a paper mill in process control and this channel has been helping so so much to get caught up on what’s going on
me, too. confused between the two. but I'm not an engineer. I'm working at a chemical company as a translator. I knew little of this kind of stuff and have been watching lots of these videos
Every automation engineer, technician, maintenance engineer should watch and Like the videos.. realpars team taking lots of effort to make automation article... Thanks you team... Viewer are in more than likes.
We have some major ones in my line of work, never take for granted that the piping goes in the direction of the drawing. Best advice for a starting point is to find a piece of equipment upstream and downstream of something major to determine you’re going in the right direction. Once you get the hand of them they are pretty simple. Just make sure when you are printing off them you have each page related to the start and end of the process you are following. Nothing worse than being on top of a 500ft structure that’s under construction to realize you didn’t bring all the right sheets. You only learn that lesson once when it’s like 45C in China and you’re a mile from the control room.
Thanks alot , you are ocean because iam watching your video alot but until now Iam not reach the end of real pars video and 90 percent of my information because rael pars you're great
It's really a big topic, and one that you will learn more and more about over a period of years while working in industry. This covered the basics well enough.
Aniket take a effort on one of your project which will be very detail and post the links here bro i wish to learn from it for your efforts.. definitely i share to my friends if that is more valuable than RealparS... hope you got that bro...
Good video, very basic. Our equipment P&IDs are very detailed, and lists the setpoints of controls, signaling direction and type (analog/digital) etc. We also have our valves separated by solenoid and pneumatic or hand control (isolation). Lots to learn but indispensable.
I have to say, I was looking for help understanding these diagrams for college, and in 5 minutes you resumed fairly well a good chunk of my classes whie keeping me engaged, great work. ^^
With regards to Instrument location, in the Video the dotted line inside the circle indicated that the device is located in the control room while the solid inside the circle indicates that device is inaccessible to the operator. As per ISA-5.1-1984-(R1992) Standard it should be the other way around.
Thank you for your feedback! I will happily go ahead and pass this on to our course developers, hopefully this is something we can create in the near future. Thank you again!
I think I mention before, the videos should be back to back, cause it to cause confusion, to look for what the viewer wants to watch, /, besides my comment great job guys.
Hi Carlos, Thanks for your comment and feedback! We try to cover varies topics on here by listening to our subscribers suggestions. Our course library www.realpars.com, does have the back to back system, teaching on topic from start to finish. Feel free to check that out, that might be interesting for you. Thanks again for sharing!
Thanks for this information it was very helpful, but i want to know which standard of P&ID instruments you followed at this video, and if you can support me with any link of references or material to have a deep knowledge of this topic.
Can you make a video about scada control in hydro power station and study of electric panel drawing in a hydro power station and thereby helping to trace faults in a organized manner.
Hi Mike, Thanks for your support! Great to hear your motivation, we hope to see you join the RealPars family soon! In the meantime, you could try out our free PLC Hardware course bit.ly/2XnnUrF Happy learning!
hi i love to watch your informative videos. please make videos on oil & gas EFI system and other thing related to oil & gas industry. thnx n waiting for kind response
Great work and excellent teaching method thank so much it's very useful for engineers, please help from where can I download the standard reference codes table waiting for your reply on this thank you once again
The applicable standard is ISA 5.1-2022. You can find PDF copies of earlier versions on the internet, but legally, the standard needs to be purchased from ISA (www.isa.org/products/ansi-isa-5-1-2022-instrumentation-symbols-and-iden).
"Not directly accessible" means that you cannot walk up to a panel and physically touch or manipulate the device. You have to pull out a rack, walk behind the operating panel, open an enclosure, etc. This is an older term, but it is still appropriate for field-mounted devices.
1 Identify in the P&ID the instruments that you consider for the measurement and control of the process. Explain. ? 2 Process variables being measured and / or controlled ? 3 Identify the process lines? 4 FO and FC what they mean for a control valve ? 5 Explain what the process consists of?
Hi Yanky, Thanks for your comment! These questions would make for a great topic of a new video course. I will happily pass this on to our course developers for possible future video courses. Thanks for sharing and happy learning!
I have a question hope to get answered. Is a pressure indicator (tagged as PI in P&ID) the same as PIT? I'm talking about the type of signal they send.
No. Per ISA 5.1, PI =- pressure indicator (local indicator, no signal to control system) PIT = Pressure Indicating Transmitter (local indication and signal to control system - either voltage or current) PT = Pressure Transmitter (no local indication [blind] and signal to control system - either voltage or current)
Hi Jam, Great question! This would actually make for an interesting topic suggestion for possible future video courses. I will happily pass this on to our course developers. Thanks for sharing and happy learning!
I have noticed that there are multiple controllers in the P&IDs I have encountered. These controllers control the various process variables(Temperature, Pressure, level, flow). With this distribution of autonomous controllers in the diagram, is it safe to say a plant uses DCS or multiple PLCs(ie one plc for each process variable). I understand PLCs can be used as DCS and in that case, does one plc control just one process variable?
Hi there, Thank you for your question! Yes, you are correct. You can have multiple PLCs controlling one process at a time or several PLCs controlling multiple processes simultaneously. It depends on your process, the type of PLC and manufacturer you pick, and the memory and I/O boards you install in your PLCs. Here is a link to help you learn more about PLC processes from Siemens, and you can compare them to other manufactures out on the market. support.industry.siemens.com/cs/document/90939626/tia-portal-an-overview-of-the-most-important-documents-and-links-safety?dti=0&lc=en-US Happy learning!
thanks for the video. it helps ,me a lot but what do you mean at 3:37 "not directly accessible?" what does the pipe symbol crossed with 2 bars? (for instance of the top right of your scheme. Could you advise me a handbook? thanks a lot
Instrumentation and piping symbols for P&ID drawings are defined in ISA 5.1-2009 (integrated.cc/cse/Instrumentation_Symbols_and_Identification.pdf). 'Not directly accessible' means that in order to access the device, you will need to open a panel or go behind a panel. I am not sure where you saw a "pipe symbol crossed with 2 bars" in the video. If you let me know at what time in the video it appears, I will be happy to help identify it.
For a fluid bed r4eactor, it is usually advantageous to put a back-pressure controller on the outlet stream of the reactor to maintain a constant pressure inside the reactor.
Thank you for your question! Currently, we do not have any lessons on Hazop or Hazid. But there is always room for more fun learning topics. Thank you for your suggestions and I will pass this suggestion on to our developers. Happy learning!
Thank you for your comment. Technically, you are correct. A full-blown P&ID would be much more "congested: and not as clearly convey the basic control elements of a P&ID. Much of what is presented on a full P&ID is information related to piping, insulation, and mechanical details, which have been removed in this video to make the automation elements more visible.
Excellent question! In order to do this correctly, you will need to thoroughly understand the P&ID symbology. Motors, VFD's, analyzers, and even valves may have multiple I/O points associated with them. The P&ID lead sheets and any "typical" that are contained in the P&ID's may offer some clues. For example, a typical valve may have one digital output (to move the valve) and zero, one, or two digital inputs to indicate position. A VFD may have a digital output to start the motor, an analog output as a speed setpoint, two analog inputs for actual speed and current, and several digital inputs to indicate status, alarms, "at speed", ramping, etc. When I do this exercise, I like to take a set of drawings, and for each item on the P&ID, I write the number of DI's, DO's, AI's, and AO's on the drawing in pencil. As I go through the process and learn more about the intent of the process, and through discussions with the process engineers, I can come up with an accurate I/O count. It also helps to understand the past philosophy of the plant as to how many I/O are typically used for a class of devices. When instrument busses like Profibus are used, and each I/O point is not associated with a separate wired connection, then those I/) should be accounted for in a separate list.
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I remember working with a young student engineer years ago. He was charged with preparing test packs for hydro and was having some difficulty with some of the symbols so he would ask me, a pipefitter. One day I asked where his pipefitter’s handbook was. He told me he didn't have one and had never heard of such a thing. On my next days off, I picked up a handbook and took it back to work with me and I gave it to him. When he started to look through it he quickly realized that all the things he had been asking were contained within the pages of the book. He looked at me and asked, "So why don't they tell you to get one of these in University?" I told him I didn't know. In any event, he was always referring to it from then on. One day he asked me how he could find something in the plant. I told him to use the northerlies and easterlies. Again, a blank look. I asked if he had ever been told about them and he said no, he hadn't. I told him to reserve a couple of hours that afternoon and we would take a couple of isometric drawings out and I would show him how to use the coordinates shown on the drawings. He very quickly learned how to use those drawing coordinates to find what he was looking for and thanked me for my assistance.
When I left that job, I never expected to see him again but as fate would have it I ran into him about ten years later on another site. He was sitting at a desk in an office he shared with a student engineer when I walked in. On the top of his desk was a very dog-eared pipefitters handbook and I laughed when I saw it and commented that he still had it. He laughed and told me he never went to site without it. Just then his office mate came in and he introduced me. He told his office mate show me what he had given him. The student engineer reached into a desk drawer and pulled out, you guessed it, his own personal handbook. I asked if he found it useful and he said he couldn't do his job properly without it. I looked back to my friend with a grin and then he said to me with a smile, "We are not too busy right now. What do you say we grab some Iso's and take him out and show him how coordinates work." We did and it was a great afternoon.
I guess that is why some teach for a living. It is very gratifying to see what happens when your charge grasps what you take for granted…………
Can I have the name of this handbook?
Now, I'm a young student engineer. Maybe in the next few years, I would like to be the same character like the man in your story.
vantonnguyen1997@gmail.com
You can send to my email, Sir!
Hope you will help me. I love sharing knowledge to the others
Very good story and as young engineer i can confirm that in one year working in company you learn much more than in 4 years university. Teachers are recommending dull books and do not teach some crucial things.
@@tonnguyen1531 Google Pipefitter's Handbook and you will see the book by Forrest Lindsey.
can anyone suggest me a plc handbook?
As a new engineer I can tell you that every lesson that I receive is well treasured. Glad you got recognized!
As a retired Journeyman Electrician, teaching is/was part of our job. It was my pride and joy to enlighten apprentices and watch their faces light up with every little trick of the trade. I remember each and every one of the men that helped me when I went through my apprenticeship. To teach is to touch lives forever.📖💪
That's beautifully said!
@@realpars Thank you
👍 appreciated for your efforts and hardwork.. thank you sir
My pleasure.
It's really sad that in an industry I was interning at, nobody even cares to look at me. I wish I had more people like you in industries.
I remember learning this stuff in College last year. A lot of us would get confused between P&ID and PID Control (Proportional, Integral & Derivative). Now it doesn't seem so confusing thanks to gaining work experience.
Shaine MacDonald I’m only in my junior year so I haven’t learned any of this stuff yet, but I just started a Co-op at a paper mill in process control and this channel has been helping so so much to get caught up on what’s going on
me, too. confused between the two. but I'm not an engineer. I'm working at a chemical company as a translator. I knew little of this kind of stuff and have been watching lots of these videos
Every automation engineer, technician, maintenance engineer should watch and Like the videos.. realpars team taking lots of effort to make automation article... Thanks you team... Viewer are in more than likes.
Thanks a million for your kind support, Kiran! We truly appreciate that.
We have some major ones in my line of work, never take for granted that the piping goes in the direction of the drawing. Best advice for a starting point is to find a piece of equipment upstream and downstream of something major to determine you’re going in the right direction. Once you get the hand of them they are pretty simple. Just make sure when you are printing off them you have each page related to the start and end of the process you are following. Nothing worse than being on top of a 500ft structure that’s under construction to realize you didn’t bring all the right sheets. You only learn that lesson once when it’s like 45C in China and you’re a mile from the control room.
Thanks for sharing your knowledge and experiences with us, Colin!
Thanks alot , you are ocean because iam watching your video alot but until now Iam not reach the end of real pars video and 90 percent of my information because rael pars you're great
Detail video on P&ID from symbol to complete diagram with an example would be great. Much to talk on this topic. Hope you will explore it more for us.
It's really a big topic, and one that you will learn more and more about over a period of years while working in industry. This covered the basics well enough.
Aniket take a effort on one of your project which will be very detail and post the links here bro i wish to learn from it for your efforts.. definitely i share to my friends if that is more valuable than RealparS... hope you got that bro...
Cannot learn only from a video.. Experience will help you more. This only for basic knowledge to introduce you to PID
Good video, very basic. Our equipment P&IDs are very detailed, and lists the setpoints of controls, signaling direction and type (analog/digital) etc. We also have our valves separated by solenoid and pneumatic or hand control (isolation). Lots to learn but indispensable.
Thank you for sharing, John!
I was wondering what those dotted lines meant🙏 you learn something new everyday.
Glad it was helpful!
I have to say, I was looking for help understanding these diagrams for college, and in 5 minutes you resumed fairly well a good chunk of my classes whie keeping me engaged, great work. ^^
Watch P&ID video using EdrawMax at @FODIC
th-cam.com/video/jHzYXW0r0AU/w-d-xo.html
Excellent tutorial. Please make more videos on P&ID.
Thanks for your support, Ashish! I will certainly forward your feedback to our course developers.
Happy learning!
I like the way you describe everything in detail. Thanks for these great contents. Much love and respect real pars.
We appreciate that!
With regards to Instrument location, in the Video the dotted line inside the circle indicated that the device is located in the control room while the solid inside the circle indicates that device is inaccessible to the operator. As per ISA-5.1-1984-(R1992) Standard it should be the other way around.
of course, great , I agree with you
aha! that's what I'm looking for! thanks mate!
Guys you have the best educational, thank you so much for that, just for that I signed up with you to check your library, when I needed
Thank you so much! We're very happy to read that.
Thank You Sir For This Videos , Your Videos are Very Informative& Knowledgeble For Us
You are very welcome! Happy learning.
Great video as always, can you guys please make a video regarding single line diagrams (for us non-electrical engineers)??
Hey Camilo!
Thanks for your comment and your suggestion. I will pass this on to our course developers!
Thanks for sharing and happy learning!
Hello You are a distinguished channel. It gives a distinct explanation and I wish you more success. Thank you for these informative craters.
Thanks a lot for your support, Habeb! Great to hear that.
How wonderful is this channel.......you really made it ......Thans you a lot.....
Thank you, Nickson! We appreciate such kind support.
@@realpars Thank you too......
I feel sorry for doctors and other courses for not having a channel like realpars for their courses, education should be in this way.
Thanks a million, we truly appreciate such support!
Appreciated but close loop open loop logic function etc. Should be in next Video. Thanks
Thanks a lot, Adnan! Happy learning!
Thanks for sharing the knowledge.
I love your videos...
You are very welcome, Asim! Great to hear that.
Many thaks,its very helpful information
Great to hear that!
Excellent video and information, as always. Thanks for sharing this !!
Great, Antonio! Thanks for sharing.
Watch P&ID video using EdrawMax at @FODIC
th-cam.com/video/jHzYXW0r0AU/w-d-xo.html
I was hopping for a more in-depth video on the symbols themselves
Thank you for your feedback! I will happily go ahead and pass this on to our course developers, hopefully this is something we can create in the near future.
Thank you again!
not a problem. Thanks for the initial content and the response@@realpars
Came here after seeing you guys on LinkedIn. Thanks
Thank you so much! Is this the ISA symbology you’re talking about?
I'm thanking you and appreciate for your efforts to a good and useful information
Great to hear that, Samir! Thanks for sharing.
Thank you so much for this intersting video ,please could you talk about how to read a electrical diagrame
Hey Fati!
Thanks for your comment and your suggestion. I will pass this on to our course developers!
Thanks for sharing and happy learning!
I appreciate the way how you explain the contents…I downloaded your app in AppStore, and don’t have a available course, How does it work ?
Thank you for your comment! Would you be able to email our support team with that question (support@realpars.com), they will happily further assist.
Very good presentation!
Thanks a lot!
Thank you for this great video. We would like more videos to learn Motion Control
Thanks for your support and feedback! We are always happy to hear that.
Very good👍
For my knowledge, I learned too much
Glad to hear that! Happy learning
Nice videos on automation .Realpars can you please make vidoes on VLSI and embedded systems
Hey Aashwin!
Thanks for your comment and your suggestion. I will pass this on to our course developers!
Thanks for sharing and happy learning!
thank you Sir Añora❤
I think I mention before, the videos should be back to back, cause it to cause confusion, to look for what the viewer wants to watch, /, besides my comment great job guys.
Hi Carlos,
Thanks for your comment and feedback!
We try to cover varies topics on here by listening to our subscribers suggestions. Our course library www.realpars.com, does have the back to back system, teaching on topic from start to finish.
Feel free to check that out, that might be interesting for you.
Thanks again for sharing!
Thank you so much! Your each video is very simple & helpful to understand & clear concepts. Keep making them!
I'm happy to hear that! Thanks for sharing.
this is all very simple things worked in a power plant engineer
Thanks for this information it was very helpful, but i want to know which standard of P&ID instruments you followed at this video, and if you can support me with any link of references or material to have a deep knowledge of this topic.
Can you make a video about scada control in hydro power station and study of electric panel drawing in a hydro power station and thereby helping to trace faults in a organized manner.
Hey Shahid!
Thanks for your comment and your suggestion. I will pass this on to our course developers!
Thanks for sharing and happy learning!
Thanks sir for this information
You are very welcome, Ankit!
Wish they taught this at my college.
This is a great video. I would like to be a Realpars student but I have little money because I am just a student and not employed
Hi Mike,
Thanks for your support!
Great to hear your motivation, we hope to see you join the RealPars family soon!
In the meantime, you could try out our free PLC Hardware course bit.ly/2XnnUrF
Happy learning!
Please make videos on how to read electrical circuit diagrams...
Hey!
Thanks for your comment and your suggestion. I will pass this on to our course developers!
Thanks for sharing and happy learning!
Watch P&ID video using EdrawMax at @FODIC
th-cam.com/video/jHzYXW0r0AU/w-d-xo.html
thank u for provide this information
You are very welcome, Asad!
hi i love to watch your informative videos. please make videos on oil & gas EFI system and other thing related to oil & gas industry. thnx n waiting for kind response
Hey!
Thanks for your comment and your suggestion. I will pass this on to our course developers!
Thanks for sharing and happy learning!
@@realpars thnx and waiting for more good
It's too informative.Thank You
You are welcome!
Thank you very much.
You're very welcome!
Very nice content , on thumb, one subscriber, one bell . Thanks Realpars
Thank you!
very good martial and tutorial
Glad you liked it!
great informations thanks for your effort can u make vedio about instrumentation sizing
Thanks for the topic suggestion, I will definitely go ahead and forward this to our creator team. Happy learning!
Great work and excellent teaching method thank so much it's very useful for engineers, please help from where can I download the standard reference codes table waiting for your reply on this thank you once again
The applicable standard is ISA 5.1-2022. You can find PDF copies of earlier versions on the internet, but legally, the standard needs to be purchased from ISA (www.isa.org/products/ansi-isa-5-1-2022-instrumentation-symbols-and-iden).
excellent video very informative and helpful
Thank you!
Hey Real pars if it is possible kindly make instrumentation troubleshooting solution in a practical way
Great video, thanks!☺️
Thanks a lot, Marcio!
Very useful, thank you
Great to hear that! Happy learning.
It is good explained thank you very mutch
You are welcome!
Thank you very much 👍
You are very welcome.✨
Nicely explained
Thank you, Henry!
As far as I know, the numbers represent the control loop
Thank you so much! Your videos are really good and useful!!!
Thanks for your support, happy learning!
Very good. 🎉
Thank you! Cheers!
Good job as always
Thanks a lot!
Thank you for your great explanation. I would like to ask, what does the "not directly accessible" really mean at the solid line?
"Not directly accessible" means that you cannot walk up to a panel and physically touch or manipulate the device. You have to pull out a rack, walk behind the operating panel, open an enclosure, etc. This is an older term, but it is still appropriate for field-mounted devices.
@@realpars Thank you so much
Watch P&ID video using EdrawMax at @FODIC
th-cam.com/video/jHzYXW0r0AU/w-d-xo.html
Very informative thank 🙏💕
You are very welcome!
fantastic video
Can you please make a video on how to create a electrical design of control panel using the PNID Drawing.
Thank you
Thanks for your topic suggestion, Vimal! I will happily pass this on as a topic suggestion to our course developers.
Happy learning!
Great video! Keep them coming!
Thanks a lot, we surely will! :)
Informative video
Glad to hear that! Happy learning
please upload video of oil and gas processing plant p and id
Hey Shohab!
Thanks for your comment and your suggestion. I will pass this on to our course developers!
Thanks for sharing and happy learning!
1 Identify in the P&ID the instruments that you consider for the measurement and control of the process. Explain.
?
2 Process variables being measured and / or controlled
?
3 Identify the process lines?
4 FO and FC what they mean for a control valve
?
5 Explain what the process consists of?
Hi Yanky,
Thanks for your comment!
These questions would make for a great topic of a new video course. I will happily pass this on to our course developers for possible future video courses.
Thanks for sharing and happy learning!
Watch P&ID video using EdrawMax at @FODIC
th-cam.com/video/jHzYXW0r0AU/w-d-xo.html
Thanks for making great and useful content.keep it up guys👌👌👌👍
You are very welcome, Syedmuzammil! Happy learning!
Watch P&ID video using EdrawMax at @FODIC
th-cam.com/video/jHzYXW0r0AU/w-d-xo.html
Sir please making calibration videos
Thanks for your topic suggestion, I will happily pass this on to our course developers.
please make a video about moter speed control throw plc in auto in help potentiometer.
Hey Manish!
Thanks for your comment and your suggestion. I will pass this on to our course developers!
Thanks for sharing and happy learning!
thank you
You're welcome
Thanks!
You are welcome, Nikolai!
THIS IS GREAT CHANNEL ON YOUR CHANNEL，AISO MY JOB IS MECHANICAL SUPERVISOR，I AM FROM TAIWAN
Thank you very much!
Thank you very much
You are very welcome!
Thanks 🙏
Welcome!
Another great one!
Thank you sir
You're very welcome, Suhail!
great video
Thank you very much!
Nice stuff !
Very useful.. Thanks
You are very welcome!
Merci à vous
Very good👍
I have a question hope to get answered.
Is a pressure indicator (tagged as PI in P&ID) the same as PIT?
I'm talking about the type of signal they send.
No. Per ISA 5.1,
PI =- pressure indicator (local indicator, no signal to control system)
PIT = Pressure Indicating Transmitter (local indication and signal to control system - either voltage or current)
PT = Pressure Transmitter (no local indication [blind] and signal to control system - either voltage or current)
@@realpars
You have no idea how this answer helped me.
Thank you...
May I know what was the relation of the pneumatic system below and the cracking process? For educational purposes only to describe the whole diagram.
Hi Jam,
Great question! This would actually make for an interesting topic suggestion for possible future video courses. I will happily pass this on to our course developers.
Thanks for sharing and happy learning!
Thank you.
You are very welcome, Charndeep!
Excellent !!
Thank you, Praveen!
I have noticed that there are multiple controllers in the P&IDs I have encountered. These controllers control the various process variables(Temperature, Pressure, level, flow). With this distribution of autonomous controllers in the diagram, is it safe to say a plant uses DCS or multiple PLCs(ie one plc for each process variable).
I understand PLCs can be used as DCS and in that case, does one plc control just one process variable?
Hi there,
Thank you for your question! Yes, you are correct. You can have multiple PLCs controlling one process at a time or several PLCs controlling multiple processes simultaneously. It depends on your process, the type of PLC and manufacturer you pick, and the memory and I/O boards you install in your PLCs.
Here is a link to help you learn more about PLC processes from Siemens, and you can compare them to other manufactures out on the market.
support.industry.siemens.com/cs/document/90939626/tia-portal-an-overview-of-the-most-important-documents-and-links-safety?dti=0&lc=en-US
Happy learning!
Please. Could you present video's ABB LST300. I mean that how to calibrate it.
Hi Shuhrat,
Thanks for the topic suggestion, I will definitely go ahead and forward this to our creator team. Happy learning!
I came here for PID and P&ID.
thanks for the video. it helps ,me a lot but what do you mean at 3:37 "not directly accessible?" what does the pipe symbol crossed with 2 bars? (for instance of the top right of your scheme. Could you advise me a handbook? thanks a lot
Instrumentation and piping symbols for P&ID drawings are defined in ISA 5.1-2009 (integrated.cc/cse/Instrumentation_Symbols_and_Identification.pdf). 'Not directly accessible' means that in order to access the device, you will need to open a panel or go behind a panel. I am not sure where you saw a "pipe symbol crossed with 2 bars" in the video. If you let me know at what time in the video it appears, I will be happy to help identify it.
Hi, can I know where to put pressure control system at a fluidized bed reactor?
For a fluid bed r4eactor, it is usually advantageous to put a back-pressure controller on the outlet stream of the reactor to maintain a constant pressure inside the reactor.
Thanks
You are very welcome, Derin!
Do you have Hazop and Hazid workshops?
Thank you for your question! Currently, we do not have any lessons on Hazop or Hazid. But there is always room for more fun learning topics.
Thank you for your suggestions and I will pass this suggestion on to our developers.
Happy learning!
This is not a PID. This is a PFD with some instrumentation tag numbers added. Where are the line numbers, intermediary valves, etc?
Thank you for your comment. Technically, you are correct. A full-blown P&ID would be much more "congested: and not as clearly convey the basic control elements of a P&ID. Much of what is presented on a full P&ID is information related to piping, insulation, and mechanical details, which have been removed in this video to make the automation elements more visible.
@@realpars understandable, but it might be worth mentioning in the video as many who are new to PIDs may get lost in the complexity of some drawings.
great .
How do you count Input and outputs from a P&ID? and this IO count will be used for PLC Programming.
Excellent question! In order to do this correctly, you will need to thoroughly understand the P&ID symbology. Motors, VFD's, analyzers, and even valves may have multiple I/O points associated with them. The P&ID lead sheets and any "typical" that are contained in the P&ID's may offer some clues. For example, a typical valve may have one digital output (to move the valve) and zero, one, or two digital inputs to indicate position. A VFD may have a digital output to start the motor, an analog output as a speed setpoint, two analog inputs for actual speed and current, and several digital inputs to indicate status, alarms, "at speed", ramping, etc. When I do this exercise, I like to take a set of drawings, and for each item on the P&ID, I write the number of DI's, DO's, AI's, and AO's on the drawing in pencil. As I go through the process and learn more about the intent of the process, and through discussions with the process engineers, I can come up with an accurate I/O count. It also helps to understand the past philosophy of the plant as to how many I/O are typically used for a class of devices. When instrument busses like Profibus are used, and each I/O point is not associated with a separate wired connection, then those I/) should be accounted for in a separate list.
@@realpars thanks for the reply. it mostly cleared my doubts on P&ID, once again thanks for your amazing efforts and educating us!!