Abstract: Compressible fluid-impermeable berm devices that self-adhere to surfaces such as ground, pavement and floors are disclosed. The compressible containment berm devices include one or more compressible containment wall sections formed from a flexible shell and a compressible filler material. A pre-applied adhesive layer at least partially covers the underside of each compressible containment wall, and is used to adhere and seal the containment wall to the containment surface. Corner joints may be used to connect the compressible containment wall sections together to thereby form the berm devices with a closed perimeter that contains leaks and spills. The compressible fluid-permeable berm devices can be easily removed or repositioned after use leaving little or no adhesive residue.

Abstract: Self-raising drive-over entranceways for containment berms are disclosed. The entranceway includes a horizontal bottom panel and a collapsible sidewall that is held in a partially collapsed position forming a void between the bottom panel and sidewall. During a spill or the filling of the containment berm with a fluid, the void area between the partially collapsed sidewall and the horizontal bottom panel fills with the fluid and exerts hydrostatic pressure against the partially collapsed sidewall, forcing it to rotate upward. The higher the fluid level, the more hydrostatic pressure is applied against the sidewall, forcing it up higher until the sidewall obtains a vertical orientation. The sidewall may be restrained either by straps, braces or the like to prevent the fluid from escaping the containment area.

Abstract: A bladder-containing wall assembly for use in containment berms is disclosed. A bladder contained in the wall assembly communicates with the interior area of the containment berm via one or more inlet ports. The bladder self-deploys from the wall upon a substantial spill or leak inside the containment berm in order to increase the fluid containment volume of the containment device. The bladder-containing wall assembly may be substituted for a wall section of either permanent or portable containment berms.

Abstract: A bladder-containing wall assembly for use in containment berms is disclosed. A bladder contained in the wall assembly communicates with the interior area of the containment berm via one or more inlet ports. The bladder self-deploys from the wall upon a substantial spill or leak inside the containment berm in order to increase the fluid containment volume of the containment device. The bladder-containing wall assembly may be substituted for a wall section of either permanent or portable containment berms.

Abstract: Self-raising drive-over entranceways for containment berms are disclosed. The entranceway includes a horizontal bottom panel and a collapsible sidewall that is held in a partially collapsed position forming a void between the bottom panel and sidewall. During a spill or the filling of the containment berm with a fluid, the void area between the partially collapsed sidewall and the horizontal bottom panel fills with the fluid and exerts hydrostatic pressure against the partially collapsed sidewall, forcing it to rotate upward. The higher the fluid level, the more hydrostatic pressure is applied against the sidewall, forcing it up higher until the sidewall obtains a vertical orientation. The sidewall may be restrained either by straps, braces or the like to prevent the fluid from escaping the containment area.