Environmental Engineering Reference
In-Depth Information
•
Information Systems (Figure 2 а):
Intended
for obtaining, processing, storage, transfer,
display and / or recording of information
about the state and / or operation of tech-
nological systems and equipment or other
I&C systems (performance of information
functions).
many cases information and control functions can
be combined in one system. For example, reactor
power control system, along with performance of
control functions provides personnel with informa-
tion on controlled parameters, state of technologi-
cal equipment, provided control commands, i.e. it
also performs information functions. On the other
hand, In-core reactor monitoring system performs
information functions as well as individual control
functions (for example, generating commands,
initiating actuation of preventive protection if
local energy release is above the acceptable rate).
Each individual I&C system is intended for
performance of specific set of the main and aux-
iliary functions. The main functions of a system
are determined by its designation:
Main
information functions
of I&C systems
are monitoring, display, alarm, recording and
archiving.
Monitoring functions
provide reception of cur-
rent data of values of technological parameters,
external and internal effects, state of structures,
•
Control Systems (Figure 2 b):
Intended for
inluencing the state and / or operation of
technological system, equipment or other
I&C systems (performance of control
functions).
For example, in-core reactor monitoring sys-
tem, neutron flux monitoring system, computer
information system, and safety parameters display
system can be related to information systems,.
Examples of control systems are reactor protection
system, reactor power control system, reactor
group and individual control rod system, etc.
However, it should be noted that this identifi-
cation is not typical for modern I&C systems: in
Figure 2. Structural schemas of individual I&C systems
Search WWH ::
Custom Search