The Importance of
Components and Systems
The Risk Increase factor
(RIF, also known as Risk Achievement Worth, RAW) is a measure that can
give you information about how important a component or a system is
based on a fault tree/event tree model that you use for safety or
reliability calculations.
Read more about how to use it
here...
If you are
running a consequence analysis for a consequence that is
defined in many event trees you may be able to reduce the
calculation time by running the consequence analysis in one
event tree at a time and then run a MCS analysis case in
which you merge all the consequence analysis cases results
(MCS lists).
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Create a few
analysis cases that have the most in common. Then use
copy/paste, rename, replace references, etc for creating the
other analysis cases based on your "template" analysis
cases.
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- Tag the
consequence
- Tag all
initiating events using the consequence as input
(Record, Tag by Criteria)
- Tag the
event tree(s) using the tagged initiating event (Record,
Tag by Criteria)
The above can
be done using the Tag and Filter functions in RiskSpectrum
FT/PSA Professional.
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- In
project window choose Untag all records from Tools menu.
- Tag the
consequence in question.
- Open
Sequence table and tag those sequences that are related
to tagged consequence using Tag by Criteria in Record
menu.
Now you can
also generate analysis cases for all the sequences leading
to your consequence:
- In
sequence table, select all tagged sequences (filter on
tag and then select all) and then execute the command
"Analyses case for all selected" in Analysis menu.
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How can I
print and export MCS lists?
You can print
and export MCS lists produced in RiskSpectrum Professional
in the following ways:
Use reports (default or reports you have defined) to send
results (e.g. MCS list) to a printer or Adobe acrobat writer
or distiller. See page 44 in Getting Started
Select to save results to text files in Analysis Cases. See
page 28 in Getting Started.
Use Copy and Paste commands to export your MCS lists to
other MS Windows applications. See page 38 in Getting
Started.
You can download Getting Started below.
Mr. Lubos Vrtik, Nuclear Power Plant Research Institute in
Slovakia has produced a macro for generating a MCS list
with descriptions in Excel. He has kindly agreed to
share this file as-is with other RiskSpectrum users.
Below you can download an executable zip file with the excel
file (MCS list with descriptions.xls) and a readme file (readme.txt).
The readme include basic instructions on how to use the
Excel file.
Simply click the link below and choose to download the file
somewhere on your hard disk or on your network. When the
download is completed, browse to where you saved the file
and double-click on it. A dialog box (WinZip Self Extractor)
will appear prompting you to extract files to a folder on
your hard disk. C:\riskspec\tools is selected by default.
Click Unzip.
MCSWithDescr.exe (112Mb)
RiskSpectrum Getting Started (getstart12.pdf, 870 kb)
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PDF version (Boundary_Conditions-u1-web.pdf, 232kb)
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Here you can
find a document outlining how record groups in RiskSpectrum
Professional are "dependent" on each other when the command
"Tag all dependent on tagged" is executed.
Tag Dependent on Tagged (TagDepTag.pdf 67 kb)
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Importing
and exporting data between fault tree models can be very
useful and in some cases essential in safety and
availability assessment projects. In this article I will
explain how to export and import data between project
databases created in RiskSpectrum® Professional.
Exchanging data between RiskSpectrum projects (dataexch.pdf,
9kb)
Download
Adobe Acrobat reader.
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