Satish,
It sounds like you have done all that is required (for those
valves)... but, usually one should check code stresses, sag,
displacements (pipe clashes), in-line equipment loads, loads acting
on all equipment connections. Assuming these all check out and that
you have no outrageously large restraint reactions all should be
well...
Of course is the model correct for geometry, SIFs, assumed boundary
conditions, pipe properties, temperature / pressure profiles? And
last but certainly not least are the load cases setup properly?
Seems pretty simple and straight forward (NOT) anyhow theres some
other stuff to think about....
- In PipingDesign@yahoogroups.com, sathish babu <togsb@y...> wrote:
>
> Hello Everybody,
> I will introduce myself to the group, i
am sathish babu working in ASLTOM Projects india Ltd in piping
department of plant engineering section.
>
> I am a Graduate Engineer and having a experience of three and Half
Years.
>
> Now i am working in CAESAR II stress analysis
>
> When a Forces and moments to be checked ?
> to my Idea i usually check on Equipment Nozzles where the piping
is to be connected for that i will be defining the nozzle node to
have displacement and check in the Restraints Summary for all
operating and sustained condition.
>
> Now i faced a small problem , i have angle valve ( Main steam
bypass valve dumped to condenser ) while doing analysis i have
defined it as rigid component and finished the analysis.
>
> After that the valve manufacturer produced the drawing and asked
me to check the allowable forces and moments on the valve.
>
> What i did was went to local element forces and moments and
checked the allowable forces and moments on the corresponding node
to be OK - Whether This is Right or I have to do anything more
>
> If anyone have any Idea about when this forces and mon=ments to be
checked and the basis please explain
>
>
> Thanking you
>
> Sathish Babu
>
>
>
Received on Thu Feb 24 09:53:00 2005