COMPUTER-AIDED SOFTWARE FMEA
The computer-aided software FMEA discussed in this paper can be the central
organizing element for the verification and validation (V&V) of embedded
software for real-time systems. The adoption of this technique provides
large economic benefits because V&V frequently consumes the majority of the
development resources for embedded software. |
Failure Modes and
Effects Analysis (FMEA): A Bibliography
Failure modes and effects analysis (FMEA) is a bottom–up analytical process
which identifies process hazards. This bibliography contains references to
documents in the NASA Scientific and Technical Information (STI) Database.
The selections are based on the major concepts and other NASA Thesaurus
terms, including ’failure analysis.’ An abstract is included with most
citations. Items are first categorized by 10 major subject divisions, then
further divided into 76 specific subject categories, based on the NASA Scope
and Subject Category Guide. The subject divisions and categories are listed
in the Table of Contents together with a note for each that defines its
scope and provides any cross-references. Two indexes, Subject Term and
Personal Author are also included. The Subject Term Index is generated from
the NASA Thesaurus terms associated and listed with each document. |
Failure Modes and
Effects Analysis (FMEA): A Special Bibliography from the NASA STI-program
This bibliography contains references to documents in the NASA Scientific
and Technical Information (STI) Database. |
Failure
mode and effects analysis (FMEA) and development of an algorithm to assess
reliability and availability of the RIA driver linac
The RAMI (reliability, availability, maintainability, and inspectibility) &
FMEA studies for the RIA facility to date include: utilization of two
approaches, those of the NLC/SLAC and the APT/LANL/AES. Significant effort
has been invested to employ the NLC/SLAC method, collection of reliable
data, creation of two models, ATLAS ECR, and RIA Front End, and initial
studies for an optimization code |
MEDICATION ERRORS : Failure Mode and Effects
Analysis Can Help Guide Error-Prevention Efforts
Too often, marketing efforts, contractual agreements with purchasing groups
or vendors, and costs serve as primary sources of information when decisions
are being made about which medical products to purchase and use. Evaluation
and input from users of the products are not always sought, and the
potential for errors might not be considered ahead of time. Later, these
omissions can lead to unforeseen problems in the hands of clinical users. A
process known as failure mode and effects analysis (FMEA) can be used to
help avoid these pitfalls. |
Challenges for Qualitative
Electrical Reasoning in Automotive Circuit Simulation
Qualitative reasoning about electrical systems has reached a level of
achievement which allows it to be used for applications on realistic
automotive circuits. The type of circuits for which it is most effective can
be characterized as circuits with a single steady state for each combination
of inputs. Many automotive circuits with more complex overall behavior can
be approximated using this type of modeling by representing the behavior of
more complex components
only at a functional level, or by judicious use of simplifying assumptions.
This paper will consider examples of circuitry in modern cars where such
approximations of behavior are unsatisfactory, and will examine the modeling
issues that are thrown up by these cases, in order to identify challenges
for qualitative electrical reasoning against which future advances in the
field can be assessed. |
Effortless Incremental Design
FMEA
Design FMEA of electrical systems is a costly and labour intensive process.
Ideally it would be done when the electrical system is first designed, and
repeated whenever any change is made to the design. Because of the cost,
this has not been possible in the past. This paper describes about how an
existing tool for automating electrical design failure mode and effects
analysis (FMEA) can be augmented to make incremental design FMEA much less
of a burden for the engineer. The tool is able to generate the effects for
each failure mode and to assign significance values to the effects. The
first time that it is run on a design, the engineer still has quite a lot of
work to do, examining the results and deciding what actions need to be taken
because of the FMEA. When a change is made to the circuit, the engineer runs
the FMEA tool again and receives a new report. Because of the uniformity of
the reports provided by the FMEA tool, it has proved possible to write
software which sorts out the failure effects which have changed from the
previous analysis and only report those results to the engineer. This makes
examination of the repercussions of the incremental FMEA much less effort
for the engineer, and makes it feasible to perform an incremental FMEA every
time the design is amended. |
Using Failure Mode Effect
Analysis (FMEA) to Improve Service Quality
Service companies must be able to face the challenge to offer error-free
services to their customers. According to Service definition, the customer
is always present during the processes and delivery of the service . If
something goes wrong it will happen in the presence of the customer . This
article shows the use of FMEA as a prevention tool in the services offered
by a Medical Clinic restaurant. A group of employees was trained in
prevention tools, they designed the process map, identified the critical
points and applied the FMEA method in order do prevent any failure during
the services operation. The first results indicated that all the actions
implemented were really effective in preventing errors. |
Automatic Generation of a
Diagnostic Expert System for FMEA information
(on screen view only) |
FIELD DEMONSTRATION
WORKSHOP ON PERFORMANCE-BASED INSPECTION OF VESSELS ENTERING THE ST.
LAWRENCE SEAWAY (Establishing Specific Inspection Plans)
This report illustrates the use of fault tree analysis and failure modes and
effects analysis (FMEA) for systematically identifying applicable and
effective inspection tasks that should be included in Enhanced Seaway
Inspections (ESIs) for Priority 1 vessels. (A separate report documents the
results of another risk based decision-making workshop that addressed how to
more effectively determine which vessels should be classified as Priority 1
and subsequently boarded by U.S. Coast Guard [Coast Guard] inspectors.)
Representatives from the Coast Guard’s Marine Safety Office Buffalo, Marine
Safety Detachment Massena, and Research and Development Center, as well as
those from the St. Lawrence Seaway Development Corporation, the St. Lawrence
Seaway Management Corporation, and EQE International, Inc. (EQE), teamed to
address this topic. |
Incorporating a user-focused
failure modes and effects analysis-like technique into the design of safety
critical systems
Failure Modes and Effects Analysis (FMEA) has long been a core part of the
hazard analysis procedures conducted in the design of high-reliability or
safety-critical hardware systems. More recently, it has been applied to the
analysis of software functions to examine the effects of failures in
software. However, approaches that account for operator behaviour as a
determinant of overall system safety have not been developed to the same
degree, and the effect of the operator on system "safety" is often handled
in an ad-hoc manner with little rigour. In this paper we propose an FMEA-like
approach by analysing the interaction between operator and device. We
discuss how such an approach would fit into current hazard and safety
analysis procedures, develop the approach using a model of user behaviour
that originates from work in cognitive science, and demonstrate how this
could be used by working through an example analysis based on a real-world
system |
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