Hello folks,
In our 10-year old Sulfur Recovery Units, we encountered steam leaks in the acid gas preheaters (BXU-type exchangers), frequently.
The steam leak usually starts just after 1 month operation. Many measures were applied to stop this issue without successful:
Flange facing lapped to 3.2-6.3 Ra. Type of gasket changed many times. Tightening performed to ASME PCC-1. However, no improvement.
Could anyone advice about the root cause and preventive measures of this leak?
BV S-Inspection Engineer
In our 10-year old Sulfur Recovery Units, we encountered steam leaks in the acid gas preheaters (BXU-type exchangers), frequently.
The steam leak usually starts just after 1 month operation. Many measures were applied to stop this issue without successful:
Flange facing lapped to 3.2-6.3 Ra. Type of gasket changed many times. Tightening performed to ASME PCC-1. However, no improvement.
Could anyone advice about the root cause and preventive measures of this leak?
BV S-Inspection Engineer
