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When should I use a Phase Diagram in BlockSim?
In BlockSim 7,
a phase diagram can be used to represent and analyze a system
whose reliability configuration and/or other properties change
over time. In other words, at different times during a mission
the system may undergo changes in its reliability configuration
(RBD), the available repair resources or the failure,
maintenance and/or throughput properties of its individual
components. Examples of this include:
- Systems whose components exhibit different failure
distributions depending on changes in the stress experienced by
the system.
- Systems or processes requiring different equipment to
function in different stages of the operational cycle, such as
start-up, normal production, shut-down, scheduled maintenance,
etc.
- Systems whose RBD configuration changes at different times,
such as the RBD of the engine configuration on a four-engine
aircraft during taxi, take-off, cruising and landing.
- Systems with different types of machinery operating during
day and night shifts and with different amounts of throughput
during each shift.
To analyze such systems,
each distinct operating condition during the mission can be
represented by a "phase" block whose properties are inherited
from an RBD corresponding to that phase's reliability
configuration, along with any associated resources of the system
during that time. A phase diagram is then a series of such
phases connected in a sequence signifying the chronological
order.
For more information
about using phase diagrams in
BlockSim 7, refer to the "Reliability
Phase Diagram Analysis" article in the Reliability Edge,
Volume 8, Issue 1. You can also refer to Chapter 11: Phase
Diagram Sheets in the
BlockSim 7 User’s Guide or to the "Reliability
Phase Diagrams (RPDs)" chapter in the System Analysis
Reference: Reliability, Availability and Optimization guide.
Can I get a
demonstration of the FMEA templates available in the FMEA
Accelerator for use within Xfmea/RCM++?
Using FMEA templates prepared by
experienced analysts who are knowledgeable about the components
and the failure mode analysis process can be a powerful way to
speed up and improve the quality of your FMEA or RCM
analyses. By providing general descriptions of the typical
functions, failures, effects and root causes along with
potential mitigation strategies, FMEA templates can serve as the
starting point for your own specific analyses and act as a guide
to assist in identifying, assessing and addressing critical
failure modes.
ReliaSoft's
FMEA
Accelerator®
allows you to access an outstanding collection of FMEA templates
for a wide variety of components for use in
Xfmea or
RCM++. If you
would like more information about the types of components that
are available and the level of detail in the template analysis,
you can:
- Review the
MRG Physical Asset FMEA Template Collection PDF file,
which lists the components available for purchase and provides
the number of functions, failures, effects and causes defined
for each component.
-
Download
a free demonstration database that also shows what
components are available and provides a partial analysis of
three components: Gearbox_Oil Lubricated, Pump_Centrifugal_Mag
Drive_Close Coupled and Pump_Centrifugal_Motor Drive.
Please note that the sample
data in the demonstration database are intended to give you an
idea of how the FMEA templates are structured and the type of
information that is available. Each partial analysis consists of
only 1 function, 1 or 2 potential functional failures and their
related effects, causes and potential maintenance strategies.
When you purchase a template, you will have access to the entire
data set. For example, the partial Pump_Centrifugal_Motor Drive
template that is distributed with the demonstration database
contains 1 function, 1 potential functional failure, 1 possible
failure effect and 5 possible causes of failure but the full
template contains 4 functions, 22 potential functional failures,
22 possible failure effects and 70 possible failure causes.
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