Non pressurized method for heat exchanger internal leak detection

摘要

A non pressurized internal separator leak test method is disclosed for a two pass condenser (10) in which helium is injected below a vertical manifold tank separator (22), allowed to rise, and detected or not detected above the separator (22). The helium cannot reach the upper side of the separator (22) other than through a separator leak path, because it will not flow sideways down the flow tubes (16).