Continuing above -
One more question - I have to give solution to a situation created by one detailed Engineering consultant ,where piping is exposed to different operating conditions . Liquid phase with around 300 Deg C , gas phase with around 450 Deg C . Piping is mostly on springs with springs installed on vertical long runs. During commissioning it is observed that there is gas and temperature is high . Hence vertical expansion is more , but the springs are designed for liquid load and hence pull heavily. There are horizontal branches and trunnions can also be placed here. Is it possible to advice on following , i.e. whether the situation would be improved or would be disastrous with following option :-
Put sway braces with calculated pre loads which will account for difference between liquid and gas weights shared at spring locations. Put sway brace in vertical, during gas service the pre load of sway brace will prevent heavy pulls from springs ?
But then the sway brace would have to be locked in liquid service or else there will be pre set load of sway brace in addition to liquid weight which may be problematic?
Regards,
bag_piper