BOM, BOQ, MTO

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17 years 2 weeks ago - 17 years 2 weeks ago #8626 by sabir
BOM, BOQ, MTO was created by sabir
Hi gentlemen,

Thanx a lot for your valuable suggestions...it helped me a lot.....

I would like to know something about
Bill of Materials (BOM)/Material To be collected (MTO)/Bill of Quantities (BOQ).
I guess this BOM, MTO, BOQ all are same...

Now, how to start with this ..... I mean some use full tips to make a BOM, MTO, BOQ...like what are the things to be considered, what all are mandatory... etc etc

Regards

Sabir

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17 years 2 weeks ago - 17 years 2 weeks ago #3956 by Jop
Replied by Jop on topic BOM, BOQ, MTO
Okay, here are some answers based on my working history.

MTO= Material Take Off
This can be a noun and a verb. The MTO is the finished product of a work activity (i.e.:Let me see the Material Take Off). In this case the "MTO" is a rather thick stack of computer print-outs that reflect all of the (piping) material requirements for the Area, Unit or total job depending on how the "MTO" was executed.
MTO is also the activity itself (i.e.: Okay lets start the Material Take Off). In this case the "MTO" is the action of doing a mass download of all the material from the computer models design data base.

BOM= Bill of Material
This is a noun. A Bill Of Material is (normally) the listing of material required for one pipe line or segment thereof, such as an Isometric. Each Isometric should have a BOM attached.

BOQ= Bill of Quantities
This would be a noun. I have never used this term. Where I worked we used the term "Material Summeries." These documents were the result of taking all the material collected in the "MTO" and after sorting it by type, material, size, etc. it is printed out in a form that would be forwarded to the purchasing department for the actual purchase.

I hope this helps.
Regards

Do it once and Do it Right

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17 years 2 weeks ago - 17 years 2 weeks ago #3957 by alegvold
Replied by alegvold on topic BOM vs. MTO
A BOM (Bill of Material) is just that. A list of material for a particular spool or iso or portion of piping.

A MTO (Material Take-Off) is the process of collecting the information for the BOM. When finished it is then a document called the MTO or BOM.

I have never used the BOQ, possibly it stands for Bill of Quote?

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17 years 2 weeks ago - 17 years 2 weeks ago #3958 by alegvold
Replied by alegvold on topic BOM vs. MTO
Also, sometimes there is a preliminary MTO, secondary MTO and final MTO. This would be used when you want an estimate early on the job (Prelim MTO), an estimate as the job is a certain percent complete (secondary MTO), and the end of the job or completion of design for final purchase (Final MTO).

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17 years 2 weeks ago - 17 years 2 weeks ago #3959 by Jop
Replied by Jop on topic MTO, BOM & BOQ
Now let's take the second part of your request.

"Now, how to start with this ..... I mean some use full tips to make a BOM, MTO, BOQ...like what are the things to be considered, what all are mandatory... etc etc.

The information that alegvold has given is very good and you should remember it and consider it in your planning.

Preliminary MTO -
Why is it done? - A preliminary MTO is normally done for two reasons. The first is to assist with the early "order-of-magnitude" (+/- 10%) estimate for the overall project. The second reason is to issue early order of magnitude "RFQ's" (Request for Quote) for piping materials
When is it done? - The preliminary MTO is only possible when there is a Plot Plan that is "Approved" by the Client or has been issued to the client for approval. This is done long before there is any detailed work started on the 3D design model.
Who does it? - A preliminary MTO is best done by very strong well experienced senior piping designers who are familiar with the project.
How is it done? - For the preliminary MTO we used a formatted form on which we could indicate the number or amount of material required for each line. On the form I would identify the line number along with the line class. I would then look at this line on the P&ID and on the Plot Plan and determine the routing of the pipe. Then in the boxes (on the form) I would then mark the amount of pipe required for each size required for that line. Then I would count the number of fittings required, starting with 90 degree elbows. Continuing through the other inline fittings and online fittings. After the fittings I would count all the flanges by size. Then I would count all the valves from the P&ID. The high point vents and low point drains would be made last based on an educated guess. Then I would take another form and do another line. As I did each line I would "Yellow" off the line on the P&ID so at the end all the lines are accounted for. As the forms were completed they would be reviewed by the Area Supervisor and then forwarded to the Material Control Group who would process the data to produce the RFQ's

Secondary MTO -
Why is it done? - The primary reason for the Secondary MTO is to update quantities for the issue of the actual Purchase orders for piping material. A second reason is to update the project estimate.
When is it done? - The Secondary MTO can only be done when there is significant progress completed on the 3D design model (or other electronic design method). However it must be done early enough to insure that the procurement (purchase and delivery) of the piping material to the field will fit the overall project schedule.
Who does it? - The Material Control Group
How is it done? - The Material Control Group would access the electronic data base and down-load all the material available at that time. Some factoring would be done by the Material Control Group and the Piping Design Leads to allow for work not done yet.

Final MTO -
Why is it done? - The final MTO is done first to identify any item added late in the project or anything that was missed on the Preliminary or Secondary MTO's. The second reason for the Final MTO is to get a fix on the final piping job costs.
When is it done? - The Final MTO is done when the last Isometric has been issued.
Who does it? - The Material Control Group
How is it done? - The Material Control Group would access the electronic data base and down-load all the material. Any differences between the Final MTO and the Secondary MTO would be identified. Purchase orders would be issued for the updated quantities.

Please remember this is only how it was done where I was. Use it as a guide but please do not be misled that this is the only way an MTO can be done.

Do it once and Do it Right

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16 years 10 months ago - 16 years 10 months ago #4006 by 11echo
Replied by 11echo on topic ...I think that at this
...I think that at this point "we" maybe splitting hairs here. A material list, or what ever you want to call it is a listing of materials to do the job. One thing I'd like to suggest, and this is more of an "edict" type thing, is to try to list your materials in a group/order. When I compile my MTOs I list all the pipe first, is order of size/importance. Then all the valves by size/rating, fittings by size/rating, all the small stuff below 2", any specialty items, and lastly the stud bolts/nuts & gaskets.
This type of structure help the purchasing guys get this stuff on order and to keep tabs on it. My $0.02 anyway, Good Luck! ...Mark

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