Decisions are based on
capital intensity
process flexibility
Capital Intensity
mix of equipment and labor
Process Flexibility
how easy it is to adjust the system for changes in design, volume, or technology
Benefits of the Right Process
increases productivity
reduces waste
increase profits
Two Main Factors that Influence Process Selection
how much volume does the process need to handle?
how much variety does the process need to handle?
Job Shop Process Type
high variety, low volume
mechanics
Batch Process Type
medium variety, medium volume
bakery
Assembly/Repetitive Process Type
low variety, high volume
Continuous Process Type
low variety, extremely high volume
gas pipelines
Project Process Type
extremely high variety, low volume
renovating a house
Repetitive Processing: Product Layout (assembly, continuous)
all products follow same or similar sequence
achieve large volume through standardization
organize equipment, activities for step-by-step flow
Intermittent Processing: Process Layout (job shop and services)
high degree of variety in job processing requirements
causes discontinuous workflow
activities, equipment organized by type or department
Fixed Layout (project)
large/bulky products, low volume, highly customized
equipment is transported to/products are built on-site
Two Primary Criteria for Process Selection of a Service
degree of customer contact
degree of customization
Warehouse Layout: two important considerations
frequency of orders or use of items
correlation between items
Retail Layout: two important considerations
traffic patterns and flow
way the layout influences customer attitude
Make-to-Order (job shop, batch)
when a customer orders a product, it is produced to their specifications
Assembly-to-Order (assembly, job shop, batch)
when a customer orders a product, it is produced from a standard set of modules and components to their specifications
Make-to-Stock
products are sold to customer from finished goods inventory
Low Cost Producer
reduce production costs in low labor cost area
reduce transportation costs by locating near raw material providers
Differentiation Through Convenience
multiple locations (atms, service stations)
Decisions Impact
investment requirements
operating costs
revenues
operations in general
Site Selection Criteria: Manufacturing/Distribution
cost focus
transportation modes/cost
energy availability/costs
labor cost/availability/skills
building/leasing costs
Site Selection Criteria: Service/Retail
revenue focus
demographics
population
competition
traffic volume/patterns
customer access/parking
Factor Rating Method
includes qualitative and quantitative
Center of Gravity Method
determines a location that minimizes shipping costs or travel time to destinations
often used with fire departments, schools, and distribution centers
Capacity
maximum load or ceiling on the output on operating unit can handle
Key Questions in Capacity Planning
what kind of capacity is needed? (decided by type of products/services)
how much is needed to match demand? (forecasting)
when is it needed? (forecasting)
Importance of Capacity Planning
determines if system's rate of output can support future demand
affect operating costs
major determinant of initial product cost
affect delivery speed
usually long-term commitment of resources
Measure of Capacity
availability of inputs (# of hospital beds)
rate of output (# of cans of coke produced)
Design Capacity
maximum designed output rate or service capacity
Effective Capacity
design capacity minus allowances for breaks, routine maintenance, planned absenteeism
Efficiency
actual output / effective capacity
Utilization
actual output / design capacity
Facility Design/Location
size and provision for expansion
distance to market
Product/Service Design and Product Mix
standardization of methods/material
Process Factors
output quality (how much need for inspection/rework)
process improvements (ways to increase productivity)
Factors to Consider when Perform In-House or Outsource
available capacity
expertise (do we have it? do we want it?)
quality considerations
nature of demand (high, stable demand = in-house) (wide fluctuations or small orders = outsource)
Stage of Life Cycle
estimate the difference (and timing) of demand requirements during a product's life cycle
"Big Picture"
find the bottleneck operation
operation with capacity lower than the capacities of other operations in the sequence
bottleneck operation limits system capacity
Theory of Constraints
a constraint is something that limits the performance of a process or system in achieving its goals
Bottleneck is One of These Constraints
market (insufficient demand)
resource (too little of one or more of workers, equipment, or space)
material (too little of one or more materials)
financial (insufficient funds)
supplier (unreliable, long lead time, standard quality)
knowledge or competence (know-how or skill missing or incomplete)
policy (laws or regulations interfere)
TOC 5-Step Process: Optimizes System in Face of Bottleneck
identify the biggest constraint
run the operation to achieve maximum benefit, given the bottleneck's capacity
make sure other portions of the process support the decision made in step two
analyze how to overcome the constraint
repeat
What Keeps TOC from Working?
incorrectly identifying the bottleneck
maximizing output in individual departments instead of considering the bottleneck
lack of communication about how to optimize the bottleneck
Supply Chain
sequence of organizations - their facilities, functions and activities - involved in producing and delivering a product or service
Supply Chain Management
strategic coordination of business functions within a business organization and throughout its supply chain for the purpose of integrating supply and demand management
Logistics
movement of goods, services, information, and cash within a supply chain
Key Aspects of Supply Chain Managment
determining appropriate level of outsourcing
managing procurement
managing suppliers
managing customer relationships
being able to quickly identify problems and respond to them
Insourcing
you become someone else's outsourcer
Outsourcing
have someone else make your product
Offshoring
having someone else or yourself make a product over seas
Risk of Outsourcing
quality - having someone else does something for you it is going to be up to your standards
Benefits of Outsourcing
frees up equipment from being updated
having employees on your books
other company assumes risk of fluctuations of demand and hold the capacity
Risks in Supply Chain
disruptions in supply
quality issues
data security
Risk Responses in Supply Chain
supplier relationships (foster partnership w/other companies so one one backstabs and creates long-term contracts)
supply chain visibility (sharing info across supply chain between suppliers and buyers)
event-response capability (developing ability to take action when an event happens)
Ethical Issues in Supply Chain
bribery
greenwashing (claiming eco friendly when isn't)
ignoring health, safety, and environmental standards
violating worker's basic rights
mislabeling country of orgin
selling goods abroad that are banned at home
What is Cost of Goods Sold Made up of
60% purchased parts
In Retail, What is Inventory Made up of
90% cost of sales
Key Aspects of Procurement
cost of a good
quality of the goods
timing of deliveries
number of sources we buy from
Major Activities in Purchasing
identify sources of supply
negotiate contracts
issue purchase orders
evaluate suppliers
Vendor Analysis
criteria used to choose suppliers (lead time, flexibility, price, quality)
Supplier Audits
reviewing supplier adherence to requirements
Supplier Relationship Management
short-term transactions vs. long-term partnership
Leverage Items
high profit impact, low supply risk
exploitation of full purchasing power
targeted pricing strategies/negotiations
abundant supply
Strategic Items
high profit impact, high supply risk
development of long-term relationships
collaboration of innovation
natural scarcity
Non-Critical Items
low profit impact, low supply risk
product standardization
process efficiency
abundant supply
Bottleneck Items
low profit impact, high supply risk
low control of suppliers
innovation and product substitution and replacement
production-based scarcity
Components of the 'Perfect Order'
delivered right products on time
processed correctly, a complete and undamaged shipment
shipped using the customer's preferred method
provided advanced shipping notification of delivery
customers could track the order during shipment
delivered on time and undamaged
listed the correct billing for services provided
Inventory Management Decisions Effect Logistics
how much to hold
when to replenish
what form of inventory hold
where to hold
Square Root Rule
estimation of impact of changing the number of locations on inventory
Centralized Inventories
lower overall inventory
slower delivery
higher shipping costs
Decentralized Inventories
higher overall inventory
faster delivery times
lower shipping costs
Inventory Velocity
rate of which material moves through a supply chain
Higher Velocity
lower inventory holding costs
faster order fulfillment
faster goods turned into cash
Demand Variation
can cause inventory fluctuations to get out of control
Bullwhip Effect
inventory oscillations become progressively larger looking backwards through the supply chain
Asses and Select Transportation Modes
speed (elapsed time required to move from point of origin to destination)
availability (ability to service any possible location)
dependability (the variance in the expected delivery times)
capability (ability to handle any type of product and or size of load)
frequency (number of scheduled movements that can be arranged by a shipper)
Stockpiling
storing inventory to protect against seasonality in supply or demand
Production Support
storing parts and components to support a plant's operations
Break-Bulk , Consolidation , Cross-Docking
splitting shipments into individual orders and arranging local delivery to customers
Break-Bulk
supplier ships entire shipment to warehouse for everything the customer of that company bought from the supplier and the warehouse breaks it down and ships it locally
Consolidation
multiple suppliers ship to warehouse/distribution centers where warehouse combines shipment from a number of sources into on larger shipment that goes to a single location
Cross-Docking
multiple suppliers ship to warehouse and they split it apart from multiple suppliers and recombine them to shipments to multiple customers