UG-22 Checklist for vessel required?

[JAYDEE23]

We design tanks based on general conditions supplied by our customer.
Basic Section VIII tanks with some nozzles.
My AI just recently requested a UG-22 checklist.
I am never provided with these "supplementary" conditions.
What do i tell my AI?
Am I responsible for UG-22 loadings if they are not provided to me?
Am i required to request them?

 

[metengr]

You, as the Designer, needs to consider the loading in UG-22. This is fundamental to the design adequacy for any Section VIII, Div 1 stamped pressure vessel.

How you consider is based on what is described in your Quality Manual - this activity can be outsourced under your control or by use of a check sheet or computer software. All it means is that you considered the loads in design.

 

[JAYDEE23]

What if my customer does not have information relative to performing the points listed under UG-22?

What about tank manufacturers that fabricate and sell off the shelf Sect VIII stamped tanks for unknown end applications?

 

[SnTMan]

JAYDEE23, you should, of course, include all reasonable, relevant loadings per UG-22. You should probably not invent loadings that are more severe than actual or are unrealistic. Examples might be seismic loading and wind loading to a standard of your choice. Some might be disregarded, for example wind loading on horizontal vessels is usually negligable.

In a perfect world, the buyer would inform you of all applicable loadings. This rarely happens.

I suspect that your AI is looking for some kind of statement that you have considered UG-22 loadings, even if only informally. I doubt he is looking for anything more than that, i.e the actual calculations.

Regards,

Mike





The problem with sloppy work is that the supply FAR EXCEEDS the demand

 

[JAYDEE23]

SnTMan,
Yes. The AI was not pushing hard for it, just like you said, looking for a statement of consideration. I just have an issue filling out a UG-22 checklist when the reality is i dont have the data required. I suppose requesting it is all i can do.