Ask X3What does 49 CFR 178.708 (Standards for fiberboard IBCs) require?
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Based on 49 CFR 178.708, the standards and requirements for fiberboard IBCs (designated as type 11G, intended to contain solids loaded or discharged by gravity) include:
* Design & Capacity: They consist of a fiberboard body (with or without separate top and bottom caps, service/structural equipment, and an optional inner liner, but no inner packaging). Their volumetric capacity must be between 450 L (119 gallons) and 3,000 L (793 gallons). Top lifting devices are prohibited.
* Material Construction: They must be built from strong, solid or double-faced corrugated fiberboard (single or multiwall) suited for the IBC's capacity and use, with proper bending qualities. The outer surface must be water-resistant (measured by the Cobb method over 30 minutes, showing a mass increase of no more than 155 grams per square meter). Fluting must be firmly glued to facings, and the material must be cut, creased, and slotted to assemble without cracking, surface breaks, or undue bending.
* Puncture Resistance & Joints: The walls, top, and bottom must have a minimum puncture resistance of 15 Joules (11 foot-pounds). Manufacturers' body joints must overlap and be secured via taping, gluing, stitching with metal staples, or an equally effective method. Glued or taped joints require water-resistant adhesive. Metal staples must pass completely through all fastened pieces and be protected to prevent abrading or puncturing any inner liner.
* Liners: If an inner liner is used, its material strength and construction must fit the IBC's capacity and use. Its joints and closures must be sift-proof and able to withstand normal handling and transport pressures and impacts.
* Pallets and Bases: Any integral pallet base or detachable pallet must be suitable for mechanically handling a fully loaded IBC and must avoid protrusions that could damage it. Detachable pallets must be secured to the outer packaging for stability, and their top surfaces must be free of sharp protrusions. Strengthening devices (like timber supports) must be external to the inner liner. Load-bearing surfaces for stacked IBCs must evenly and stably distribute loads.