Samenvatting

Operations management summary H9 inventory management

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Operations Management

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Hogeschool Windesheim (HW)

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Operations Management

Deze samenvatting gaat over inventory management. Lot sizing principles en redcution tactics worden benoemd.

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Wat is er van het boek samengevat? H9
Geupload op 13 september 2021
Aantal pagina's 7
Geschreven in 2020/2021
Type Samenvatting

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Operations management samenvattingen H1 t/m H12 Supplement B

€ 35,91 € 14,85 9 items

1. Samenvatting - Operations management summary supplement b
2. Samenvatting - Operations management summary h11 resource planning
3. Samenvatting - Operations managment summary h10 operations planning and scheduling
4. Samenvatting - Operations management summary h9 inventory management
5. Samenvatting - Operations management summary h7 projects
6. Samenvatting - Operations management summary h4
7. Overig - Operations management begrippenlijst
8. Samenvatting - Operations management summary h1 using operations to create value
9. Samenvatting - Operations management summary h2 process strategy and analysis
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OPM H9 Inventory Management
Inventory management = the planning and controlling of inventories to meet the
competitive priorities of the organization
Inventory = stock of materials used to satisfy customer demand or to support the
production of services or goods
Inventory Trade-Offs
 Level of inventory = the difference between
input flow rate and the output flow rate

Pressures for small inventories:
- Inventory holding cost
- Cost of capital
- Storage and handling costs
- Taxes
- Insurance
- Shrinkage
o Pilferage (diefstal)
o Obsolescence (veroudering)
o Deterioration (verslechtering)

Pressures for large inventories:
- Customer service
- Ordering cost
- Setup cost
- Labor and equipment utilization
- Transportation cost
- Payments to suppliers (kortingen, speculatie op prijs)

Type of inventory:
- Accounting inventories
o Raw materials
o Work-in-process (halffabricaten)
o Finished goods
- Operational inventories
o Cycle inventory  varies directly with lot size
o Safety stock inventory  surplus inventory to protect against
uncertainties in demand, lead time and supply changes
o Anticipation inventory  inventory used to absorb uneven rates of
demand or supply
o Pipeline inventory  is created when an order for an item is issued but
not yet received

, Lot sizing principles:
- Cycle inventory
o The lot size Q, varies directly with the elapsed time between orders
o The longer the time between order for a given item, the greater the
cycle inventory must be
o At the beginning of the interval, the cycle inventory is at its maximum =
Q.
o At the end of the interval, just before new lots arrive, the inventory drop
to its minimum 0.
o Average cycle inventory = the average amount of inventory a
business needs to meet the customer demand between the time it
orders more inventory form its suppliers/ production
Average cycle inventory = Q + = Q / 2
- Pipeline inventory
o Average demand during lead time =
o Average demand for the items per period =
o Number of periods in the item’s lead time = L

Pipeline inventory =
Inventory reduction tactics:
- Cycle inventory
o Reduce lot size
 Reduce ordering and setup cost and allow Q to be reduced
 Increase repeatability to eliminate the need for changeovers
 Repeatability = the degree to which the same work can
be done
- Safety stock inventory
o Place orders closer to the time when they must be received
 Improve demand forecasts
 Cut lead times
 Reduce supply uncertainties
 Rely more on equipment and labor buffers
- Anticipation inventory
o Match demand rate with production rates
 Add new products with different demand cycles
 Provide off-season promotional campaigns
 Offer seasonal pricings plans
- Pipeline inventory
o Reduce lead times
 Find more responsive suppliers and select new carriers
 Change Q in those cases where the lead time depends on the lot
size

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