KMART CUTS OPERATIONAL COSTS BY MORE THAN $3 MILLION
It was the power of numbers at work: Vative’s supply chain and logistics expertise, Kmart’s Lean project teams and ultimately the entire Kmart distribution workforce involved in continuous improvement programs which delivered more than $3 million in savings to this huge Australian retailer.
Vative’s certified Lean training programs were used extensively, along with internationally certified Six-Sigma Green Belt training. A number of formal project teams then implemented major Lean projects to reduce internal process waste, improve utilisation of resources and enhance key metrics around quality, cost and delivery. A goal of every project was to make the entire workforce more aware of its responsibility in achieving business gains, rather than relying on specialists to bring about operational and business improvements.
The following sample projects show the significant scope of change involved.
Project 1: Utilisation of container cube
The common practice of building pallets which fell short of the full container height generally meant that 25% of container volume was not utilised. To break this legacy thinking, operators needed to understand how wasted space impacted on the business bottom line, as well as being given responsibility for adopting logical waste elimination initiatives.
Several improvements were made:
- New methods of packing pallets manually to full height required design and installation of new working platforms.
- Freight contracts were reviewed to incorporate higher 2.4 m pans. The freight lane rate was also reviewed.
- Loading bay roller doors in distribution centres were raised to allow for 2.4 m heights.
Achievements included reduced freight costs, less pallet use and greater consolidation of customer orders to satellite warehouses. Combined savings in excess of $900,000 for Perth and Brisbane distribution centres were achieved from a simple, low cost process improvement.
Project 2: Improve pick and pack overall work rate
The aim was to achieve a 13% increase in the average pick and pack rate for the Perth distribution centre, from 71 cartons to 80 cartons per hour. Value stream mapping of current processes enabled a number of issues to be rectified, including over-processing, double handling and transport and movement waste. The introduction of faster, simplified reporting from the warehouse management system also enabled more efficient picking.
A saving of $78,000 for the Perth distribution centre alone resulted from an investment of $25,000 in standardising new processes, training all personnel and utilising IT resources in designing better reporting systems.
Project 3: Quick changeover of cluster lines
Cluster changeovers in cross-docking operations were the largest contributor to significant downtime that affected process throughput. The strategy was to:
- Minimise the number of cluster changeovers through scheduling similar products into particular lanes.
- Determine the cluster needs of cluster separation processes.
- Reduce overall cluster changeover times from 13 to 10 minutes, through basic time and motion analysis.
- Reduced cluster changes to 4.6 changes per week
- Improve transport utilisation.
Total annual savings of $55,000 were achieved, and the cluster changeover times were more than halved from 13 to 5.9 minutes.
Project 4: Container management and control
Poor container management into and within distribution centres meant stock was held in containers rather than entering into the system. Sales were lost, and inventory problems resulted:
- Inventories were not promptly receipted, head office visibility into available and allocated stock was compromised and data integrity was questioned.
- Non-value adding email traffic increased from buyers and allocators.
- Inventory levels in distribution centres were incorrect, as stock was held in containers instead of being booked into the system.
Several initiatives based on visualisation and standardisation were implemented including:
- Process analysis and redesign for pre-receipting keycodes in containers.
- Containers with less than four keycodes were receipted and verified separately.
- A new database controlled containers and keycodes and improved visualisation of stock throughout the network.
- Database training for inventory staff increased stock availability and reduced excess inventories.
- Improved team work between receiving and inventory followed staff consultations and process reviews.
Kmart reduced operational costs by more than $3 million through engaging all levels of its workforce in Vative’s continuous improvement programs. While there were many tangible qualitative and quantitative changes, the intangible changes in the workforce were just as critical. Through its strategy of total staff involvement and shared responsibility for success, Kmart’s distribution centres began their Lean journey with a workforce that is integrated, mobilised and in alignment with the overall Kmart business plan.
Lost sales were cut by 80% due to earlier stock availability in the system.
Email traffic enquiries from head office dropped by 90%. Inventory holdings in distribution centres dropped by 30% due to greater stock turn. A $55,000 investment delivered savings of approximately $480,000.
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