Environmental Engineering Reference
In-Depth Information
3. Module of find of information.
1. A list of standards and guides used for expert
assessment. This list can be formed by select-
ing proper standards from Chapter 1 of the
knowledge base depending on a specified
type of I&C system and document submit-
ted for review. In turn, a list of regulatory
requirements, included into Chapter 2 of the
knowledge base, is formed from require-
ments of standards contained in Chapter 1.
2. A list of requirements on object and subject
of expert review. By analogy with the stated
above a list of regulatory requirements can
be also automatically formed on the basis
of requirements selection from Chapter 2 of
the knowledge base depending on a specified
type of I&C system and document submit-
ted for review. In this list both mandatory
requirements of national regulatory docu-
ments and recommended requirements of
international standards are included.
Module is devoted to provide a user with a
possibility of information search by a random
combination of classification features, specified in
each chapter of the knowledge base, and also for
full-text search by specified key words or phrases.
4. Module of users authorization.
This module serves for authorization of em-
ployees using the ASSEA and knowledge base
to provide a possibility of carrying out different
activities for different user groups. For all users
search and selection of required information from
the knowledge base is allowed. Operators of the
ASSEA are allowed inputting new information in
the knowledge base or modifying its content, using
editing subsystem, by adding, changing or deleting
records with structure retention. Administrators
of the ASSEA (possible involving designers)
have a possibility to perform extended systems
customization and correction of the knowledge
base structure if necessary. Besides that some
information can be available only for the speci-
fied groups of users (for example, financial and
contract documents should be available only for
direction of enterprise, head of specific department
and workers of accounting department).
A model of structure of the ASSEA is given
in Figure 3.
Diagram of application of the knowledge base
during safety assessment of the NPP I&C systems
under NRS expert reviewing is shown in Figure
4.
3.
Information about earlier expert reviews. A
list of expert reviews completed at previous
life cycle stages of specific I&C system,
implemented on a certain NPP power unit,
can be formed on the basis of information
contained in Chapter 3 of the knowledge
base.
4.
Information about operating NPP I&C sys-
tem. Description of a considered system (or
similar system) can be obtained from Chapter
4 of the knowledge base. If the specified I&C
system is fundamentally new and there is no
information about it, then during an expert
review information about this I&C system is
input in the knowledge base from submitted
documents substantiating safety.
Let us explain in more detail way the content
of the diagram of formation of report on expert
review using the chapters of the knowledge base
(see Figure 4).
In the left part of the figure a generalized con-
tent of report on expert review is shown. It contains,
in particular, the following main components.
5.
Information about requirements on NRS
that are declared in a submitted document
for expert review. Documents that should
be approved by the regulatory authority at
a certain life cycle stage of I&C systems are
submitted for expert review. Besides that,
during expert review different additional
documents, substantiating safety, can be
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