The supply chain process

The supply chain process involves managing the flow of materials and products from initial production through to delivery to customers. It ensures that businesses handle resources efficiently to meet demand while minimising disruptions.

Key elements of the supply chain process

• Raw materials to finished goods - This includes overseeing the storage and transport of raw materials, partly completed items, and final products from the starting point of sourcing to the end consumer.
• Management focus - Effective supply chain management coordinates logistics to avoid delays, reduce waste, and maintain smooth operations.
• Risks of poor management - A lengthy or inefficient supply chain can raise expenses and increase the likelihood of breakdowns, such as delays in delivery or stock shortages, which harm business performance.

Just-in-time (JIT) stock control

Just-in-time (JIT) is a method of managing inventory where materials arrive exactly when required for production, avoiding the need to store large amounts of stock. This approach helps businesses cut unnecessary expenses and improve efficiency.

Features of just-in-time stock control

• Timing of deliveries - Supplies are ordered and received only as they are needed, eliminating the buildup of inventory.
• Dependence on suppliers - Success relies on nearby, dependable suppliers who can provide quick and reliable deliveries to prevent production halts.
• Cost savings - By not holding stock, businesses avoid expenses related to storage, upkeep, protection against theft, and potential spoilage.

Advantages of just-in-time stock control

• Reduced stock management costs - No buffer stocks are needed, lowering expenses for holding inventory.
• Improved cash flow - Avoiding stockpiles frees up working capital for other uses.
• Enhanced efficiency - Promotes streamlined production processes and better use of resources.

Disadvantages of just-in-time stock control

• Reliance on external suppliers - Any supplier delays can stop production entirely.
• High setup costs - Implementing the system involves significant administrative and planning expenses.
• Limited flexibility - Struggles to handle sudden spikes in demand without advance notice.

Just-in-case (JIC) stock control

Just-in-case (JIC) is an inventory management system that maintains extra stock to prepare for unexpected increases in demand or supply issues. This method prioritises readiness over minimal holdings, making it suitable for certain types of products and industries.

Features of just-in-case stock control

• Buffer stock maintenance - A reserve level of inventory is kept to allow quick increases in output if demand rises suddenly.
• Associated costs - Includes expenses for insurance, maintenance, and security to protect against damage or theft.
• Suitability for products:
  • Works well for durable, non-perishable items like synthetic materials, oil-based products, ceramics, or matured drinks.
  • Not suitable for items that spoil quickly, such as fresh food or dairy.
• Industry considerations - Less effective in fast-changing sectors like technology or fashion, where trends shift rapidly and stock can become outdated.

Advantages of just-in-case stock control

• Flexibility for demand changes - Allows quick responses to unexpected customer needs without delays.
• Continuity during disruptions - Production can continue even if supplier deliveries are late.
• Better customer satisfaction - Ensures products are available immediately, reducing wait times and retaining buyers.
• Prevention of lost sales - Avoids turning away customers, unlike systems with no reserves.
• Bulk buying benefits - Enables purchasing in large quantities to gain discounts from suppliers.

Disadvantages of just-in-case stock control

• Premium pricing from suppliers - Urgent orders may incur higher charges.
• Increased operational costs - Expenses rise for storage, maintenance, security, and insurance.
• Risk of obsolescence - Large stockpiles could include items that become outdated or unsellable.
• Vulnerability to loss - Stocks may suffer damage or theft while in storage.
• Cash flow challenges - Ties up significant working capital that could be used elsewhere.

Stock control charts

Stock control charts are visual tools used to monitor inventory levels over time, helping businesses avoid shortages or excesses. They plot key elements like order timings and quantities to maintain optimal stock.

Key terms in stock control charts

• Lead time - The duration from placing an order to receiving the stock; longer times require earlier re-orders or larger quantities to prevent gaps.
• Buffer stock - The lowest safe inventory level kept as a safeguard against delays, damage, or demand surges.
• Re-order quantity - The amount of stock ordered each time to replenish supplies.
• Re-order level - The inventory point at which a new order is triggered to avoid running out.
• Usage rate - The pace at which stock is used up in production or sales, which varies with busy periods (higher) or slow times (lower).
• Stock-out - A situation where inventory drops to zero, halting production or sales; businesses may stock up before peak seasons to prevent this.
• Stockpiling - Accumulating excessive inventory, which can lock up funds and lead to waste if not managed properly.