Inventory Control Management & Spare Part Inventory Control for Railways
Inventory Control
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Transcript of Inventory Control
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Inventory is the idle resource of an enterprise.
A certain amount of inventory is essential for smooth running of an organization.
Inventory control technique is used to strike a balance between operations and demand.
Raw material and spares
Work in process
Finished goods inventory
Total inventory cost = purchasing cost + Set up cost + Holding cost + Shortage cost
Purchasing cost
Set up cost
Holding cost
Shortage cost
Holding (or carrying) costs. Costs for capital, taxes, insurance, etc. (Dealing with storage and handling)
Setup (or production change) costs. (manufacturing) Costs for arranging specific equipment setups, etc.
Ordering costs (services & manufacturing) Costs of someone placing an order, etc.
Shortage (backordering) costs. Costs of canceling an order, customer goodwill, etc.
ABC (AFTER BETTER CONTROL) ANALYSISA-items are small in quantity but high in price.
B-moderate in quantity and moderate in price.
C-are required in high quantity but low price.
Class Item No.
Percentage
Value in Million Rupees
Percentage
A 136 4.2 3.12 73.7B 531 16.8 0.92 21.8C 2509 79.0 0.19 4.5
Total 100.0 4.23 100.0
HMLThese items are listed out in the descendingorder of unit- high, medium, low volume.VEDIt stands for vital, essential and desirable. It ismostly done in spare parts.GOLFThese items are imported which are
channelizedthrough the state trading corporations.
FSNThe pattern of issue from store. Fast
moving,slow moving, near moving.SDE In this items are classified on the basis of
scaresitems ,difficult to get, easy to get the
product.
EOQ (economic order quality)Economic order quality deals when the cost
ofprocurement and handling of inventory are
atoptimum level and total cost is minimum.
QUALITY
COST
INVENTORY
AnnualHolding
CostTotal Annual Cost =
AnnualPurchase
Cost
AnnualOrdering
Cost+ +
SQ
DH
QDCTC
2
A little bit of calculus…
H
DSEOQ
2
TC = Total annual costD = DemandC = Cost per unitQ = Order quantityS = Cost of placing an order or setup costH = Annual holding and storage cost per unit
of inventory