Thanks Faizal for response,
I was waiting some one give some reply desperately.
I guess my question appeared that I sent without doing homework I am sorry for the same

The point is I have already gone through the help.

"
Static snubbers are translational restraints designed to provide resistance to dynamic loads
such as seismic and wind. Snubbers are activated by checking the Snubbers Active? check
box for the appropriate load case (the one that contains the occasional load) on the Load Case
Options tab in the Load Case Editor. The figure below shows that snubbers will be active in
load case L2 to restrain the pipe against the uniform load.
Figure 20: Load Case Options Tab
Static snubbers, or static analysis snubbers, have SNB following the translational direction that
displays in the restraint Type box (located on the Classic Piping Input dialog box). After you
enter a snubber, Gap and Mu are no longer available.
Static snubbers can be directional. That is, they can be preceded by a plus (+) or minus (-) sign.
To model static snubbers, follow the steps below.
1. Run the operating case without defining a snubber.
2. Note the displacements, in all six degrees of freedom, at each snubber location.
3. In the Classic Piping Input dialog box, add each snubber with a distinct CNode.
4. Place the displacements from Step 1 on all snubber CNodes.
5. Modify the load cases by including D1 everywhere that T1 displays.
6. Activate snubbers in the Load Case Editor for all load cases containing occasional loads.
"

but this process is not giving correct results to my expectaions.

As D1 is added in Ope case, and Still T1 is present it gives additional displacements
for ex. if +X direction displacement is 2 mm in Ope case, after Adding D1 it gives 4 mm as D1+T how is this correct?

same happens in occ case as the D1+T1 is present.

also if I provide X insted of XSNB it gives me same loads in restraint summery, then how to check what use of Snubbber?

What I expect,
In restraint summery
Snubber must show that it takes load only in occ cases and Ope case is no load. and thus nozzle to not show occasional loads as it was showing earlier without snubber.

Please solve my problem, Thanks Million