Trustworthiness in Industrial System Design
other; a simple combination results in new
challenges.
The solution is to take the system design
away from the system characteristics and
move to methods which are assigned to the
system characteristics. In traditional system
design such methods had been used for a
long time but were not classified by the
Trustworthiness Characteristics. And this
classification can be extended by other
attributes.
Definition: A Trustworthiness Method is
defined as a component, tool, technology,
software application, an operational
procedure or a management directive which
is assigned to at least one trustworthiness
characteristic. Such methods are named as
Trustworthiness
Safety
Method,
Trustworthiness Resilience Method, etc. If a
method
is
assigned
to
several
trustworthiness characteristics, the list of
characteristics is separated with a slash, e.g.,
Trustworthiness Security/Privacy Method.
Examples of Trustworthy Methods assigned
to several trustworthiness characteristics
are:
The definition of such a method is
intentionally as broad as possible as only the
assignment to one or more trustworthiness
characteristics is key.
Examples of Trustworthiness Methods are:
system not the environment or humans;
CO 2 is indeed dangerous for humans).
Network firewall: a tool and a
Trustworthiness Security Method.
Melt-resistant steel: technology and a
Trustworthiness Resilience Method.
Windmill Restart: operational procedure
for airplanes during an engine flameout
and a Trustworthiness Resilience
Method 4 .
Electric motor brush replacement:
operational
procedure
and
a
Trustworthiness Reliability Method.
Brushless motor: technology and a
Trustworthiness Reliability Method.
Encryption of all social security numbers
on servers: management directive and a
Trustworthiness Privacy Method.
Fire extinguisher: a tool and a
Trustworthiness Safety Method.
CO 2 fire suppression system 3 : a tool and
a Trustworthiness Resilience Method
(the main purpose is to protect the
Fire-resistant plastic: technology and a
Trustworthiness
Safety/Resilience
Method: it prevents a fire from
spreading and endangering humans
(safety) but also prevents the system
itself from damage (resilience).
Using
encrypted
hard
disks:
management
directive
and
a
Trustworthiness
Security/Privacy
Method.
Most of these Trustworthiness Methods for
industrial systems have existed for many
years. The only novelty being the assignment
3
Gaseous fire suppression, https://en.wikipedia.org/wiki/Gaseous_fire_suppression and Carbon dioxide,
https://en.wikipedia.org/wiki/Carbon_dioxide
4
Flameout, https://en.wikipedia.org/wiki/Flameout]
September 2018
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