Explains what is meant by critical national infrastructure and why it is important in critical systems engineering

1. Critical national infrastructure introduction video Slide 1
Critical national infrastructure
Ian Sommerville

2. Critical national infrastructure introduction video Slide 2
What is infrastructure?
• This national
infrastructure is made
up of
networks, systems, sites
, facilities and
businesses that deliver
goods and services to
citizens, businesses, pu
blic bodies and
government.

3. Critical national infrastructure introduction video Slide 3
Infrastructure services
• Power, water, wast
e disposal, the
internet, transport
networks,
• Government
services, financial
services, emergenc
y services, hospitals
etc.

4. Critical national infrastructure introduction video Slide 4
Physical infrastructure
• National
physical
infrastructure is
a set of
networks that
facilitate the
movement of
people, goods, e
nergy, water, wa
ste, data, etc.
around a

5. Critical national infrastructure introduction video Slide 5
Infrastructure networks
• Transport
• Energy
• Communication
s
• Data
• Water
• Waste

6. Critical national infrastructure introduction video Slide 6
Organisational infrastructure
• Financial services
• Medical services
• Emergency services
• Government
services
• Food supply
© Dwight Burdette

7. Critical national infrastructure introduction video Slide 7
Digital infrastructure
• Hardware and software
systems and networks
on which businesses and
society depends
– Fibre communication links
– Mobile phone and data
network
– Data centres and servers
– ISPs

8. Critical national infrastructure introduction video Slide 8
Critical infrastructure
• Assets which are part of the national
and organisational infrastructure
whose availability is essential to the
delivery of infrastructure services and
whose unavailability has significant
human, social and economic
consequences.

9. Critical national infrastructure introduction video Slide 9
Critical infrastructure
• Critical infrastructure assets
include
– Structures and buildings
– Networks
– Computer-based systems
– Organisations

10. Critical national infrastructure introduction video Slide 10
Critical assets
• Not all components of the national infrastructure are
critical elements
• Criticality does not just depend on the type of facility
but also on the number of people affected or other
consequences if the facility is damaged or
unavailable and cannot easily be replaced.

11. Critical national infrastructure introduction video Slide 11
© Kenneth Iwelumo. http://commons.wikimedia.org/wiki/File:Heathrow_Terminal_5C_Iwelumo-1.jpg

12. Critical national infrastructure introduction video Slide 12
© Gareth James.
www.world-airport-codes.com

13. Critical national infrastructure introduction video Slide 13
Landline Phones
Mobile
Telecommunicatio
ns
Postal Services
Broadcast
Communications
Ambulance
Fire and Rescue
Marine
Police
Communication
s
Food
Emergency
Services
Energy
Electricity
Gas
Oil
Fuel
Production
Processing
Import
Distribution
Retail

14. Critical national infrastructure introduction video Slide 14
Health and Social Care
Finance
Government
Health
Transport
Water
Payment, Clearing and
Settlement Systems
Public Finances
Markets and Exchanges
Central Government
Parliament
Devolved Administrations
Regional and Local Authorities
Maritime
Aviation
Land (Road and rail)
Potable water supply
Dams
Waste Water Services

15. Critical national infrastructure introduction video Slide 15
Critical infrastructure systems
• Our infrastructure is controlled and
managed by a wide range of
interacting, computer-based systems
• Businesses and essential services to
citizens are completely dependent on
our ‘digital infrastructure’
• Therefore, all of the systems involved in
critical infrastructure management are
critical software-intensive systems

16. Critical national infrastructure introduction video Slide 16
Summary
• National infrastructure is a set of services
such as energy, communications and medical
services on which society depends.
• Critical national infrastructure are those
assets which are needed to deliver these
services whose unavailability has serious
social consequences.
• Software-intensive systems are used to
manage, organize and control our critical
national infrastructure so these are critical
systems.

17. Critical national infrastructure introduction video Slide 17
slideshare.com/so
mmerville-videos