Material costs Flashcards
What types of materials are in inventory ? P41
- Raw materials - components
- brought for resale
- service/ consumable items
Who normally buys materials within a company ? P41
- Purchasing/ procurement department
- job - inventory control policies
- lowest possible costs - quality, quantity, sustainability measures
What would the adopted method on planning purchases and inventory control depend on ? P42
- Size and sophistication of business
- IMPORTANT - how much inventory
1. physical count
2. computerised records (physical verification)
3. when - reordering
4. quantity - reordering
What are the main methods of inventory control ? P42
- Perpetual inventory
- just in time
What is perpetual inventory ? P42
- Records receipts and issues of inventory - pass in/out
- reorders made
- Inventory records digitally kept by computers - activiated barcodes
What is just in time method ? P42
- components delivered- just when needed
- quality suppliers - manufacturing schedules
- inventory levels = kept low
What are formulas ? P43
- When to order and how much to order
What is the fixed quantity method of ordering ? P43
- in set amounts
What should the business know when ordering in fixed quantity? P43
- Maximum inventory level - storage space available
- Buffer inventory - not below
- Lead time -time it takes - new inventory delivery
- Reorder level - point new order placed
- Appropriate reorder quantity - maximum and minimum reorder quantity
How do you calculate the buffer inventory ? P44
- Reorder level - (average usuage * average lead time)
- meet unexepcted emergencies
- lead time known
How is the reorder level calculate ? P44
- (average usuage * average lead time) + buffer inventory
- replacement materials delivered - falls to buffer inventory
How is the maximum inventory level calculated ? P44
- Buffer inventory + maximum reorder quantity
- highest level
- obsolescnece
How is the maximum reorder quantity calculated ? P44
- Maximum inventory level - buffer inventory
- restores inventory - maximum level
How is the minimum reorder quantity calculated ? p44
Average usuage * average lead time
restore to re-order level ( further order placed )
What is critical to the efficiency of inventory holding? P45
- the reorder quantity
- too large = too much inventory = expense
- too small = costs of reordering < costs of saving for lower inventory = run out
What is the economic order quantity ? P19
SMALL BOOk
- optimum (most economical) amount
What is the formula for EOQ ? P46
2 * CO * D / CH
What do the different symbols in most economic calculation stand for ? P46
- CO - Ordering costs
- D - Annual usuage
- CH - inventory holding costs