Chapter 6.pptx - ORDER PICKING METHODS Richards Chapter 6...

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ORDER PICKING METHODS Richards Chapter 6
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Order picking methods The following picking methods are currently in use in today’s warehouses: Paper pick lists Pick by label Pick by voice Barcode scanning Radio frequency identification Pick by light/pick to light Put to light Automated picking
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Order picking methods 1. Paper pick - order number, location, product code, description and quantity. WMS will have pick sequence. Picker will utilise trolley, cage, pallet truck or fork truck. Has low accuracy and require validation 2. Pick by label - labels given to picker who attaches to items in trolley etc. 3. Pick by Voice - Operators are issued with a headset and a microphone together with a small terminal that is attached to a belt or can be worn on the wrist. The WMS sends messages to the computer via radio frequency (RF) transmissions, utilizing transmitters installed throughout the warehouse, and these messages are converted into voice commands. The operator also uses voice to communicate back to the system.
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Benefits increased accuracy increased productivity reduction in paper usage reduction in errors through elimination of re-keying data improved safety through hands- and eyes-free operation reduction in damage real-time stock updates leading to fast and accurate replenishment real-time updates regarding potential shortages increased operator time on the warehouse floor reduced training times multilingual, accommodating a diverse workforce easy to integrate with other systems potential reduction in employee turnover and normally a quick ROI
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Figure 6.1 Benefits of voice picking (courtesy of ARC Advisory Group)
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Figure 6.1 Benefits of voice picking (courtesy of ARC Advisory Group) For example, a warehouse that picks half a million cases per week with a 99.8 per cent accuracy level (two errors per thousand) incurs 52,000 errors per annum. Increasing accuracy to 99.96 per cent or 0.4 per thousand, for example, will reduce errors by 41,600 per annum. If we accept that the cost of a mis-pick is approximately £25 ($39), this can be an overall saving of £1,040,000. ($1,627,000).
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Figure 6.2 Why voice outperforms scanning
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Case Study Waitrose `10% productivity improvement. E.g. 36,000 cases ÷ 7.5 hours per day ÷ 35 operators = 137 cases per hour per operator. A 10 per cent productivity gain would raise the cases per hour to 151. To calculate the reduction in operators, take the same equation and solve for X as the number of operators: 36,000 cases ÷ 7.5 hours per day ÷ (x) operators = 151 OR × = 36,000 ÷ 7.5 ÷ 151 = 32 operators .
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