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Forum / General Discussion: Structured Packing – General / Structured packing damage?

Structured packing damage?

Feb 22, 2017
By: Joe Sumner

While installing 500 m2/m3 structured packing, the installers did not use walking boards and walked directly on the layers of packing. No visible damage was seen. Should we be concerned before starting up?


3 thoughts on “Structured packing damage?

  1. MCavett says:

    How soon is the start-up? Is there replacement packing available to install without delaying startup?  At FRI, we are currently preparing for a test where we installed structured packing (Montz 350MN) without using walking boards, and we should have preliminary results as soon as the end of next week. We also intentionally damaged the packing to simulate dents from the heel of a boot or knee before installation.  The following are observations from the install, the installer could dent the packing when forcefully pressing down on the packing with his feet and cause the top of the packing to bend when his feet would slide across the packing.  Unfortunately, we do not have a value on the expected effects on capacity and efficiency at this time. 

    1. jrandall says:

      For structured packing installations, FRI always strongly recommends using walking boards and guide plates to ensure the packing is not damaged.
      By directly walking on the packing, the heel of a boot or knee can create high local pressure to damage the packing.
      The installer could also dent the packing when forcefully pressing down on the packing with his feet and cause the top of the packing to bend when his feet would slide across the packing.
      FRI is currently conducting an extensive test program to investigate how the structured packing installation affects the packing performances.
      One of the tests in this program is to study the effect of damaged packing on the packing performance, where the structured packing was installed without using walking boards and guide plates.
      We should have preliminary results as soon as the end of next week. If you have questions about joining FRI, please contact

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