BROKEN CASE PICKING SYSTEMS

Chapter seven RightStore Pieces: Piece Picking Principles, Systems, and Best Practices

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Figure 7.40 Person-aboard ASRS picking operation

depending on order size. The order picker can sort on board if enough containers are provided on the storage/retrieval machine. A person-aboard ASRS offers significant floor space savings over the systems described so far. The floor space savings are available because the storage system heights are no longer limited by the reach height of the order picker. Shelves or storage cabinets can be stacked as high as floor loading, weight capacity, throughput requirements, and/or ceiling heights permit. The key to achieving good picking productivity is intelligent slotting and pick tour sequencing. If there are 10 or fewer picks per aisle traversal, then the objective is to keep most of the picks at or near floor level. If there are more than 10 picks per aisle traversal, the operator most likely should be sequenced to make a sweep of the upper and lower levels of the aisle. In this case, bands of fast-moving items should be located in the upper and lower levels. The operator should traverse along the lower band on the way out from the input-output point and along the upper band on the way back to the input-output point.

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