Allowable Loadings at Piping Terminal Points
Allowable Loadings at Piping Terminal Points
(OP)
Hi,
In the Plant Design Procedure, when dealing with equipment nozzles, following steps is done:
1- Equipment designer, designs its nozzles by hand or software (such as NozzlePro) and reach to thicknesses for reinforcing plate so that this nozzle can bear loadings defined in specification tables as maximum allowable loadings (3 force and 3 moment components).
2- These allowable loadings will be declared in equipment drawing, so that piping designer, arrange and design its supports so that not exceeding these values (by use of software such as Caesar II).
Now, my question is:
There is a document, named, Piping Terminal Point List (or something like that), which list piping battery limits with other parties and in it, there are lots of information, such as:
1- E, N, El. of connection point
2- Type of connection (flange, weld, screw,...)
3- Design pressure and temperature at the connecting point
4- Fluid type and status
5- Reference P&ID number
6- Tie-in number with regard to reference P&ID
...
Also, it seems by above similarity, there should be additional columns dealing with allowable loadings. Therefore, connecting party can design and arrange its supports so that not exceeding these values.
Am i right? If so, from where these values come?
In the Plant Design Procedure, when dealing with equipment nozzles, following steps is done:
1- Equipment designer, designs its nozzles by hand or software (such as NozzlePro) and reach to thicknesses for reinforcing plate so that this nozzle can bear loadings defined in specification tables as maximum allowable loadings (3 force and 3 moment components).
2- These allowable loadings will be declared in equipment drawing, so that piping designer, arrange and design its supports so that not exceeding these values (by use of software such as Caesar II).
Now, my question is:
There is a document, named, Piping Terminal Point List (or something like that), which list piping battery limits with other parties and in it, there are lots of information, such as:
1- E, N, El. of connection point
2- Type of connection (flange, weld, screw,...)
3- Design pressure and temperature at the connecting point
4- Fluid type and status
5- Reference P&ID number
6- Tie-in number with regard to reference P&ID
...
Also, it seems by above similarity, there should be additional columns dealing with allowable loadings. Therefore, connecting party can design and arrange its supports so that not exceeding these values.
Am i right? If so, from where these values come?





RE: Allowable Loadings at Piping Terminal Points
It depends on the project specific requirements.
Sometimes you have to anchor your tie-in at the terminal point so not to impose any load, moment and displacements to the other side but if that's not doable then you need to find the anchor point downstream your terminal point and include that section in your stress analysis making sure your counterpart is comfortable with the load and moment results.
RE: Allowable Loadings at Piping Terminal Points
So, it seems you are not in favor of including additional columns about allowable loadings, isn't it?
Also, it seems there isn't anything, in this regard, in the existing standards and codes (flange codes). Am i right?
RE: Allowable Loadings at Piping Terminal Points
It might be better to put a note about it in the tie-in list to be on the safe side but i haven't seen any tie-in list having the allowable loads and moments listed.
But having said that it doesn't mean that it can't exist, that's my experience.
Cheers.
RE: Allowable Loadings at Piping Terminal Points
Great, now there's another useless list.
That can be you're job McDermott.
Independent events are seldomly independent.
RE: Allowable Loadings at Piping Terminal Points
RE: Allowable Loadings at Piping Terminal Points
I totally agree with Frank.
Independent events are seldomly independent.