Vessels Data sheets!!!

[shahdadf]

hi,
i(as a supervision engineer)should check the vessel's data sheets which have been prepared by our consultants and contractors,,,, which items in data sheets i should focus on them and be more carefull about them???
thanks a lot

 

[MJCronin]

wahdid...

If you have no idea of what parameters are important to pressure vessel design, I suggest that you purchase some books on the subject and begin to read.

Excent books are offered by

http://www.asme.org

Also consider the "Pressure Vessel handbook" by Megussy
as well as the book by Bednar.

Tell us more about the particular type of vessels and the project,

-MJC

 

[dtn6770]

Relative to the size of some engineering document package I've had to monitor, vessel data sheets minuscule, if your talking about the U1-A forms. IMO evertyhing on them needs to verified.

The contractors probably have you weding through ever piece of paper they genererate (data sheets, outline drawings, specifications, etc.) before they send them out for bid. Then you're probably in a bid review loop. After the contract/PO has been issued you probably get to look at every fabrication drawing the comes out of the supplier's door. Let me know if your asking about what parts of all those documents you should focus on. I'll elaborate if that's the case.

Otherwise, the true vessel code data sheets are small potatoes and should be completely reviewed without too much trouble.

 

[shahdadf]

thanks a lot friends,
but really i want to know that in engineering data sheets which items are more important for paying more attention( for example dimensions, thickness, materials and...)

 

[vesselguy]

Shahdadf,

Like MJCronin says, all the information are important. In engineering all data have impact on each other. From what you discribed, you need to hire an experienced engineer for static equipment to address your need. Never practice in a field which you're not qualifed in. Best of luck.

 

[dtn6770]

Welllll how accountable you are for the consultants'/contractors' performance? That is, how big of a hicky are you going to get for their screw-ups that are publically recognized? You don't have to answer that.

What you will have to answer is, "what's important?" That answer will depend circumstance. For example, you'll probably wans a vessel that's replacing and existing vessel will have to have the same nozzel orientations and elevations. That may not be as big a deal in a larger project where you might be able to recover from an oops with piping modifications.

You'll also need time to become comfortable with the contractor staff and learn who's work you can trust more than ohters'. Early on I suspect you'll be reviewing more than later in the game after you've learned what warrents your attention.

The simplest rule to go by is to review everything you are competently able to and have the time to. Irrelevant information is rarely included on data sheets since they are usually the launch point for procurement and eventually fabrication activities. Always check that the correct design conditions are listed. Critical dimensions should be verified. Materials should be checked. Verify nozzle schedules and even that the identified flange classes are good for the vessel's design conditions.

I could never really bring myself to check thicknesses since that actually got into reproducing the contractors code calcuations. Actually those would have been the fabricators' code calcuations since the contractors left that to them. In theory the contractor should check the code calcs...but we're responsible for the contractor.

Sorry if I haven't been very helpful but its a very open ended topic.

 

[roca]

Without sounding too rude, if you don’t know what to check / look for on a vessel datasheet then you shouldn’t be doing it.
You wouldn’t ask a panel beater to review someones medical records would you.