| 摘要 |
<p>Provided are a testing method and a testing device capable of simultaneously subjecting a plurality of porous hollow-fiber membrane modules to a pressure maintenance test in a shallow tank as part of a step for producing porous hollow-fiber membrane modules. A safety testing method for porous hollow-fiber membrane modules is provided with the following steps: a step for immersing a plurality of porous hollow-fiber membrane modules (6) in a tank (4) filled with a solution and arranging the modules (6) in the vertical direction in a manner such that the modules (6) each extend in the horizontal direction; a step for connecting a pressure pump (8) to each of the porous hollow-fiber membrane modules, and pressurizing the interior of the hollow-fiber membranes that configure the porous hollow-fiber membrane modules; a step for stopping the pressurization and sealing the interiors of the porous hollow-fiber membrane modules; a step for measuring the decline in pressure of the sealed space within each porous hollow-fiber membrane module; and a step for determining, on the basis of the measurement result, whether to accept or reject the porous hollow-fiber membrane modules, which have had the depth thereof in the tank corrected.</p> |
