Dear all,

I have some quite stupid question,

I have large bore routing line connect with column with temperature 20 Degree C, the content is gas with low density.
Nozzle of column is located at the high elevation above ground (approx. 20 m.). I put the spring hanger at the last support before nozzle point (away from Nozzle approx. 5 m. I really can not put it closer).

The solution are spring was automatically selection by program accordance with normal operating temperature. The nozzle load of operating case, design case and sustain case are acceptable. But the problem is nozzle load of WNC case are very large because spring absorbed load only 5% of normal operating condition load then nozzle load are quite large.

I found this problem twice time in 2 systems. But for other are normal.

Please clearified this problem for me.....

Best regards.