1.I have a vaporizer drum connecting to two reboilers
2.The Bottom tan line of drum and reboiler support(rigid support) location is exactly at the same elevation.
3.Process requirement is to connect the drum and reboiler with single elbow and a valve inbetween. so i have a fitting to fitting connection.
4.With both reboilers at operating condition, nozzle loads for the drum are within the allowable.
5.If reboiler tubes are clogged they close the valve and disconnect the clogged reboiler after cooling (may be 8 hrs), with other reboiler in normal operating condition.For this operating standby case i have more nozzle loads on the drum nozzle (5 time higher than the normal case) due to expansion of the vertical drum
6.Is there any option to accomdate these huge nozzle loads for a period of time for the drum nozzle occasionaly.