6 replies to this topic

Hi,

I am working on a Oil and Gas project and my client has given more than hundred P&Ids to check and review.

As i know this job takes some time to check all the process lines connections, flows, valves and instruments, but they need in very short period of time. Is there any tips from the seniors to check the P&IDs in a faster way to check more efficiently.

Thanks in advance for the help

Regards

Ram

[joerd]

It really depends on what they mean by "check and review." Do they want you to check them in the field ("as-built") or do they just want you to verify if they have used the right symbology, put line numbers on all lines, etc.
The classic parameters for every project are time, money and quality. If they don't give you adequate time and money, quality will suffer - and I would tell them that I wouldn't put my signature on the work. If they want quality, they need to give you more time, or more money so that you can find others to help you.
Some people may be able to check P&IDs faster than others, in particular because of their experience. But there is no shortcut that gives you the same quality.

[Art Montemayor]

Ram:

Joerd has provided a wise and accurate answer to your query. It all depends on the Scope of Work that is either being specified or, worse, inferred. You have not been specific in your query when you state “my client has given more than hundred P&Ids to check and review”. We don’t know WHAT, specifically, you are to check and review.

I’ll take Joerd’s excellent comments a little further: Are you expected to confirm that ALL the engineering is correct and safe? In other words, are you to review and confirm that the process is inherently safe? Are you to confirm that the equipment and piping sizes are appropriate for the expected performance? Are you to confirm that all alloys selected and specified on the P&ID (such as piping class, codes) are correct and safe according to the clients desires or needs? I could continue on ad infinitum, but I believe these questions are sufficient to give you the type of concern that can arise when there is no SPECIFIC identification of the problem or need.

If you have not been issued a written specification on exactly and specifically what it is that you are supposed to be “checking”, you have a very serious problem on your hands at present. You should either be specific or demand specific instructions on how to proceed.

Art / Joerd:

Many thanks for your valuable answers, actually client have issued me the P&IDs and asked me to check in the process areas and piping areas before they will issue these drawings for IFC.

In the SOW they have mentioned that i have to check the drawings in the process side and piping side to check whether the drawings are correct or not.

Thanks in advance

Ram

[Art Montemayor]

Ram:

I think I failed in concretely defining what joerd and I both recommend:

You should get a SPECIFIC and well-defined instruction on WHAT it is that you are supposed to be checking. I think we gave you plenty of examples in the forms of questions.

You still have failed to make me feel comfortable that you have been issued specific instructions. If you are going to Issue For Construction (IFC) after your check, this means that you are checking for correct engineering size, safe startup and operation, correct basic data used, correct process calculations employed, safe operation from hazards, etc., etc.. Is that what is meant by "whether the drawings are correct or not"????

If the above is a correct assumption, I wouldn't take on the responsibility of doing the checking on a time fuse. Your description of what the client is asking for is just not practical nor logical. I consider it too risky and a jeopardy for you. I would not accept being intimidated into doing such an important function with a minimum of funds and time.

Sorry.

[Neelakantan]

hi
i am neelakantan; and i saw this post and desired to reply for two reasons: 1) typically a fresh /jr engineer is asked to "check" the drawaings and he being junior fails to elicit clearly the SOW from the client / superiors. 2) i happen to do assign such jobs to my juniors and most of the times i help them by telling what i expect as i never had my senior explain that clearly to me!

though you have not mentioned who really passed the work to you ( you simply said my client gave!), i presume it is your seniors.

both montemayor and joerd are jedi level people who can demand clear SOW and job instructions, and many may not have that capacity or will.

first clarify on: have you / has your company been party in preparing these p&IDs then you should have previous revisions and check the changes, assuming your drafting team didnot mess with the "unmarked" areas also.

If these are fresh p&IDs to you /your company, you have to define the complexity of the drawings; when you say these drawings have to be issued for IFC and also clear the process and piping areas; these areas cannot be marked in the drawings, what i presume is that the plant is divided in to process areas, piperack, utility, common areas, flare etc.

if this presumption is right, you need to sift from the 100 odd drawings, the drawings which are for these areas and clear them (so make a list and get it cleared from your senior)
secondly, within the drawings at AFC or IFC (issued for construction!? or issued for comments?) open an xl sheet to mark out the incoming and outgoing arrows (drawing numbers and line numbers) run an xl sort and see the sort matches them.

the second check is to cross check line numbers with line list (this may sound tedious, but not really so if the drawings are developed in your company; else again a table may help)

third is checking for notes, interlocks and holds; check they match with the numbers and that they convey what they intend to convey

as montemayor said, each drawings would consume some time and i would rather cover fewer drawings completely than clear more drawings incomplete in some respects

best wishes

[benoyjohn]

Hi,

Preparing a check list based on the items you think your client wants you to be done. Agree on the checklist with the client.

The checklist will come in handy, especially if you plan to divide the work among others as it will help in getting some sort of consistency.

regards,
Benoy