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Failure analysis system used in safety engineering and reliability engineering
Fault tree analysis (FTA) is a type of failure analysis in which an undesired state of a system is examined. This analysis method is mainly used in safety
Fault_tree_analysis
Logical modeling technique
needed an alternate method to fault tree analysis due to the fault trees being too large. Though not using the name event tree, the UKAEA first introduced
Event_tree_analysis
Method of identifying the fundamental causes of faults or problems
and effects analysis (FMEA), fault tree analysis, Ishikawa diagrams, and Pareto analysis. There are essentially two ways of repairing faults and solving
Root-cause_analysis
Engineering discipline
system. The two most common fault modeling techniques are called failure mode and effects analysis (FMEA) and fault tree analysis (FTA). These techniques
Safety_engineering
Analysis of potential system failures
type of reliability analysis may be considered, for example fault tree analysis (FTA); a deductive (backward logic) failure analysis that may handle multiple
Failure mode and effects analysis
Failure_mode_and_effects_analysis
Symbolic representation of accident path and safety barriers
probabilistic aspects of the fault and event tree when it is used in the context of quantified risk assessments. Bow-tie analysis is used to display and communicate
Bow-tie_diagram
Conceptual diagrams showing how an asset, or target, might be attacked
Bayesian analysis is unsuitable. Since the Bayesian analytic techniques used in fault tree analysis cannot legitimately be applied to attack trees, analysts
Attack_tree
Defect that causes abnormal electric current
affected, the resulting "asymmetric fault" becomes more complicated to analyse. The analysis of these types of faults is often simplified by using methods
Electrical_fault
Identification of the nature and cause of a certain phenomenon
intelligence) Event correlation Fault management Fault tree analysis Grey problem RPR problem diagnosis Remote diagnostics Root cause analysis Troubleshooting Unified
Diagnosis
Statistical principle about ratio of effects to causes
with other analytical tools such as failure mode and effects analysis and fault tree analysis for example.[citation needed] This technique helps to identify
Pareto_principle
Technique for evaluting hazards in systems
Hazard and operability study Hazard analysis Fault tree analysis Risk assessment CCPS (2001). Layer of Protection Analysis: Simplified Process Risk Assessment
Layers_of_protection_analysis
Aerospace recommended practice from SAE International
Assessment (SSA) Fault Tree Analysis (FTA) Failure Mode and Effects Analysis (FMEA) Failure Modes and Effects Summary (FMES) Common Cause Analysis (CCA), consisting
ARP4761
methods for risk assessment, such as layer-of-protection analysis (LOPA) or fault tree analysis (FTA) may be used after a PHA, if the PHA team could not
Process_hazard_analysis
Graphical breakdown for problem solving
issue tree provides a diagram to aid the candidate's logical reasoning. Issue trees are used for other types of case interview questions as well. Fault tree
Issue_tree
Process to determine the causes of accidents to prevent recurrence
Why's model, Ishikawa (fishbone) diagram, the Fault Tree Analysis (FTA), or the Failure Mode and Effect Analysis (FMEA). Five Why's Model: Also known as "Why-Because"
Accident_analysis
Topics referred to by the same term
such as described under Fault tree analysis. This disambiguation page lists articles associated with the title Error analysis. If an internal link incorrectly
Error_analysis
Term in reliability engineering
and scale in redundant components. Reliability Block Diagrams or Fault Tree Analysis are developed to calculate availability of a system or a functional
Availability
Systematic technique for failure analysis
civil aviation industry now tends to use a combination of FMEA and Fault Tree Analysis in accordance with SAE ARP4761 instead of FMECA, though some helicopter
Failure mode, effects, and criticality analysis
Failure_mode,_effects,_and_criticality_analysis
Standard concerning risk assessment
Scenario analysis Business impact analysis Root cause analysis Failure mode and effects analysis (FMEA) Fault tree analysis Event tree analysis Cause and
ISO/IEC_31010
Process of incorporating security controls into an information system
mathematics, and architecture. Some of the techniques used, such as fault tree analysis, are derived from safety engineering. Early forms of security engineering
Security_engineering
Study, prevention, and management of major hazardous material accidents in process plants
preliminary hazard analysis (PreHA, usually accomplished by the use of a risk matrix), fault tree analysis (FTA), event tree analysis (ETA), layer-of-protection
Process_safety
multiple systems. Independent failures, represented by an AND gate in a fault tree analysis, have a low probability of occurring in the same flight. Common causes
Zonal_safety_analysis
2003 American spaceflight accident
considered to be a contributor to the accident. NASA conducted a fault tree analysis to determine the probable causes of the accident, and focused its
Space Shuttle Columbia disaster
Space_Shuttle_Columbia_disaster
Form of problem solving, often applied to repair failed products or processes
effects (FMEA) and fault tree analysis (FTA) before full-scale production, and these methods can also be used for failure analysis. There are two major
Troubleshooting
Possibility of something bad happening
software. Logical models, such as Bayesian networks, fault tree analysis and event tree analysis Expert judgement, such as absolute probability judgement
Risk
Fall of a complex human society
Urban decay Systems science Failure mode and effects analysis Fault tree analysis Hazard analysis Risk assessment Systems engineering See the end of the
Societal_collapse
Methodology for evaluating risks
common methods of answering this last question are event tree analysis and fault tree analysis – for explanations of these, see safety engineering. In
Probabilistic_risk_assessment
Systematic analysis technique
mode Failure rate Fault Tree Analysis FMECA FMEA Hazard analysis and critical control points High availability List of materials analysis methods List of
Failure modes, effects, and diagnostic analysis
Failure_modes,_effects,_and_diagnostic_analysis
Eight disciplines of team-oriented problem solving method
situations Failure mode and effects analysis – Analysis of potential system failures Fault tree analysis – Failure analysis system used in safety engineering
Eight disciplines problem solving
Eight_disciplines_problem_solving
Systematic preventive approach to food safety
Management System. Failure mode and effects analysis Failure mode, effects, and criticality analysis Fault tree analysis Food safety Design Review Based on Failure
Hazard Analysis Critical Control Point
Hazard_Analysis_Critical_Control_Point
Process of collecting and analyzing data to determine the cause of a failure
in the first place, including failure mode and effects analysis (FMEA) and fault tree analysis (FTA), methods which can be used during prototyping to
Failure_analysis
Diagram for redundant systems
converted to a success tree or a fault tree depending on how the RBD is defined. A success tree may then be converted to a fault tree or vice versa by applying
Reliability_block_diagram
American wide-body four-engined jet long-range aircraft
the 747. The project was designed with a new methodology called fault tree analysis, which allowed the effects of a failure of a single part to be studied
Boeing_747
Identification, evaluation and control of risks
risk). Typical risk analysis and evaluation techniques adopted by the medical device industry include hazard analysis, fault tree analysis (FTA), failure mode
Risk_management
S2CID 198467101. Chennetier, G. (2022). "Adaptive importance sampling based on fault tree analysis for piecewise deterministic Markov process". arXiv:2210.16185 [stat
Piecewise-deterministic Markov process
Piecewise-deterministic_Markov_process
Design of Systems for Reliability Failure Mode and Effects Analysis (FMEA) Fault Tree Analysis (FTA) Management and Planning Tools Corrective Action Preventive
Certified_Quality_Engineer
American computer engineer
concerns fault tolerance in computer systems, fault tree analysis, and the dynamic fault tree method for the probabilistic analysis of fault tolerance
Joanne_Bechta_Dugan
Method for accident analysis to determine causal relationships
necessary) Accident Cause–effect graph Fault tree analysis Five whys Ishikawa diagram Issue map Issue tree Root cause analysis Ladkin, Peter; Loer, Karsten (April
Why–because_analysis
Sub-discipline of systems engineering that emphasizes dependability
as reliability block diagrams, hazard analysis, failure mode and effects analysis (FMEA), fault tree analysis (FTA), Reliability Centered Maintenance
Reliability_engineering
Data structure for Boolean functions
verification. There are several lesser known applications of BDD, including fault tree analysis, Bayesian reasoning, product configuration, and private information
Binary_decision_diagram
Interdisciplinary field of engineering
safety engineering, as in failure mode and effects analysis (FMEA) and hazard fault tree analysis, and of security engineering. Risk management, the practice
Systems_engineering
Industrial process plant that manufactures chemicals
etc.) are exhaustively analyzed in combination through a Hazop or fault tree analysis, to ensure that the plant has no known risk of serious hazard. Within
Chemical_plant
Form of reasoning
extraordinary claims Fallacy – Argument that uses faulty reasoning Fault tree analysis – Failure analysis system used in safety engineering and reliability engineering
Deductive_reasoning
Certification process for the 737 MAX
the failure condition in the safety analysis, using Failure Modes and Effects Analysis (FMEA) and Fault Tree Analysis (FTA), as these are only required
Boeing_737_MAX_certification
Some industries use both fault trees and event trees. Software has been created for fault tree analysis and event tree analysis and is licensed for use
Event_tree
Type of software testing
that might come from not understanding what the users really want. Fault Tree Analysis (FTA): This technique is used to figure out why something went wrong
Risk-based_testing
Investigation of failures associated with legal intervention
their investigation. Failure mode and effects analysis (FMEA) and fault tree analysis methods also examine product or process failure in a structured and
Forensic_engineering
Branch of electrical power engineering
the fault to reappear. The transient faults represent the vast majority of faults on the overhead transmission lines; a semipermanent fault, like tree contact
Power_system_protection
Risk management strategy using a systems-based approach
most notably the tree structure from fault tree analysis, which was originally an engineering technique. The root cause analysis techniques can be categorised
System_safety
Topics referred to by the same term
when summoned to a court etc. Fault tree analysis, system analysis methodology FTA paper (Fast Technology for Analysis (of nucleic acids)) is chemically
FTA
Genetic technique for identifying organisms in mixed samples
recreational boating: A conceptual model for risk assessment based on fault tree analysis". Ecological Modelling. 220 (13–14): 1586–1598. Bibcode:2009EcMod
Metabarcoding
Formula for estimating bridge weight limits
LeBeau, Keary H.; Wadia-Fascetti, Sara J. (July–August 2007). "Fault Tree Analysis of Schoharie Creek Bridge Collapse". American Society of Civil Engineers
Federal Bridge Gross Weight Formula
Federal_Bridge_Gross_Weight_Formula
U.S. Department of Energy reservation in South Carolina
SRP computerized the automatic diagnosis alarms in 1982, using fault tree analysis to support plant operators in accidental situations. In his 8 January
Savannah_River_Plant
lightning (Withdrawn, replaced by parts of IEC 62305) IEC 61025 Fault tree analysis (FTA) IEC 61028 Electrical measuring instruments – X-Y recorders
List_of_IEC_standards
System whose failure would be serious
assessment, a method that combines failure mode and effects analysis (FMEA) with fault tree analysis. Safety-critical systems are increasingly computer-based
Safety-critical_system
FSMS—Functional Safety Management System FT—Firm Transportation Service FTA—Fault Tree Analysis FTC—Federal Trade Commission (US) FTR—Firm Transmission Rights —Financial
List_of_energy_abbreviations
1987 bridge collapse in Montgomery County, New York
April 9, 2020. LeBeau, Keary H.; Wadia-Fascetti, Sara J. (2007). "Fault Tree Analysis of Schoharie Creek Bridge Collapse". Journal of Performance of Constructed
Schoharie Creek Bridge collapse
Schoharie_Creek_Bridge_collapse
Safety testing procedure
performance level is determined using techniques such as Markov analysis, FMEA, fault tree analysis and Hazop. These techniques allow the user to determine the
Partial_stroke_testing
American associate professor of computer science
on Mediator-based Design Style with David Notkin, on the Galileo: Fault Tree Analysis Tool with Joanne Bechta Dugan. He has also contributed to the design
Kevin J. Sullivan (computer scientist)
Kevin_J._Sullivan_(computer_scientist)
Italian statistician
S.P. (2018), Prior Robustness for Bayesian implementation of the Fault Tree Analysis. IEEE Transactions on Reliability, 67, 170-183. Rios Insua, D., Ruggeri
Fabrizio_Ruggeri
system hazards and estimating the risk they pose. One such method is fault tree analysis. This is followed by a safety requirements specification which is
Safety_life_cycle
American mathematician
"Birnbaum's contributions to reliability theory". Reliability and fault tree analysis (Conf., Univ. California, Berkeley, Calif., 1974). Soc. Indust. Appl
Z._W._Birnbaum
Method for assessing risk
environments Failure mode and effects analysis – Analysis of potential system failures Fault tree analysis – Failure analysis system used in safety engineering
Hazard_analysis
Estimation of risk associated with exposure to a given set of hazards
11. ISBN 978-3-319-30931-6. Lacey P (2011). "An Application of Fault Tree Analysis to the Identification and Management of Risks in Government Funded
Risk_assessment
Geologic events off the Alaska coast
XI (Extreme). The strike-slip earthquake took place on the Fairweather Fault and triggered a rockslide of 30 million cubic meters (40 million cubic yards)
1958 Lituya Bay earthquake and megatsunami
1958_Lituya_Bay_earthquake_and_megatsunami
users Failure mode and effects analysis – Analysis of potential system failures Fault tree analysis – Failure analysis system used in safety engineering
Human factors in diving safety
Human_factors_in_diving_safety
Systems Analysis Programs for Hands-on Integrated Reliability Evaluations
analysis time. New features included: end state analysis; fire, flood, and seismic modules; rule-base cut set processing; and rule-based fault tree to
SAPHIRE
Food safety regulations
with HACCP. Failure mode and effects analysis Failure mode, effects, and criticality analysis Fault tree analysis Food defense Food safety Design Review
Hazard analysis and risk-based preventive controls
Hazard_analysis_and_risk-based_preventive_controls
Topics referred to by the same term
species Attack tree, conceptual diagrams showing how a target might be attacked Fault tree diagram, diagram used in deductive failure analysis in various
Tree_diagram
is a list of notable tools for static program analysis (program analysis is a synonym for code analysis). CodePeer ConQAT Fluctuat LDRA Testbed MALPAS
List of tools for static code analysis
List_of_tools_for_static_code_analysis
Earthquake in California, United States
tilt. This is a frequently noted compensation of tree tilt. Seismologist Kerry Sieh determined that fault slip and the associated ground disturbance were
1857_Fort_Tejon_earthquake
Species of tree
larger than Grogan's Fault and 17% larger than General Sherman, the current largest tree. It was felled around 1945. The Lindsay Creek Tree was documented to
Sequoia_sempervirens
Technique used in the field of human reliability assessment (HRA)
of the overall reliability analysis. This can be completed by inserting the HEPs into the full system’s fault event tree, which allows human factors
Technique for human error-rate prediction
Technique_for_human_error-rate_prediction
Electrical pre-breakdown phenomenon
the branches of a tree. Treeing of solid high-voltage cable insulation is a common breakdown mechanism and source of electrical faults in underground power
Electrical_treeing
extraction of essential features related to fault signatures at different scales, enabling a more comprehensive analysis of the gearbox's health status. It helps
Wavelet_packet_decomposition
but computers and associated software are used most often in design and analysis. Neutron kinetics, thermal-hydraulics, and structural mechanics are all
List of software for nuclear engineering
List_of_software_for_nuclear_engineering
South Korean computer scientist (born 1946)
system architectures for timeliness and dependability QoS Fault-tolerant system design, analysis, and validation Open controller software architectures and
Kang_G._Shin
Overview of and topical guide to algorithms
Circular buffer Tree (data structure) Binary tree Binary search tree AVL tree Red–black tree B-tree B+ tree Trie Segment tree Fenwick tree Heap (data structure)
Outline_of_algorithms
underlying basement fault blocks. Baillie and McAneney's 2015 analysis of this climate anomaly discusses its abnormally narrow Irish tree rings and the anomalous
Mid-24th-century BCE climate anomaly
Mid-24th-century_BCE_climate_anomaly
Path structure in mathematical trees
the edit distance between trees, graph drawing and greedy embedding, finding a path near all nodes of a given graph, fault diagnosis in fiber-optic communication
Heavy-light_decomposition
Subset of artificial intelligence
Decision trees where the target variable can take continuous values (typically real numbers) are called regression trees. In decision analysis, a decision
Machine_learning
Infinitely detailed mathematical structure
more complex H tree – Right-angled fractal canopy Infinite regress – Philosophical problem Lacunarity – Term in geometry and fractal analysis List of fractals
Fractal
138–. ISBN 978-81-203-4187-6. Ng Kang Siong (1996). "Fan-in tree analysis: a new fault isolation tool". ICSE '96. 1996 IEEE International Conference
Fan-in
Branch of forensic engineering
factors that could contribute to a failure through the generation of fault tree diagrams (see diagram at right). Following the generation of the possible
Forensic materials engineering
Forensic_materials_engineering
Grouping a set of objects by similarity
Cluster analysis, or clustering, is a data analysis technique aimed at partitioning a set of objects into groups such that objects within the same group
Cluster_analysis
American filmmaker (born 1943)
praise his films for their lavish cinematography and aesthetics, but others fault them for lacking plot and character development. His work has nonetheless
Terrence_Malick
Earthquake in Los Angeles, California
undiscovered fault that ruptured in 1994 was subsequently named the Northridge Blind Thrust Fault or Pico Thrust Fault. Thrust faulting in the northern
1994_Northridge_earthquake
Earthquake impacting Myanmar and Thailand
gap and extended further north and south of it based on their analysis of the finite fault model by the USGS. The rupture extent corresponded with the Pyu
2025_Myanmar_earthquake
Inevitable and sometimes unforeseen chain of events
with a consequence / impact analysis. Cascade effects are commonly visualised in tree structures, also called event trees. Cascade effects seen in the
Cascade_effect
Programming language running on the Erlang virtual machine
top of Erlang and shares the same abstractions for building distributed, fault-tolerant applications. Elixir also provides tooling and an extensible design
Elixir_(programming_language)
Open-source data analytics cluster computing framework
an interface for programming clusters with implicit data parallelism and fault tolerance. Originally developed at the University of California, Berkeley's
Apache_Spark
Megathrust earthquake in Russia
associated with the preparatory process of a large earthquake on an active fault. An analysis of earthquakes from 1973 to late 2024 revealed three ring-shaped seismicity
2025_Kamchatka_earthquake
Method for data management
of a hash table or binary tree. Citation index Stores citations or hyperlinks between documents to support citation analysis, a subject of bibliometrics
Search_engine_indexing
legal protections for tenants. It would immediately ban Section 21 "no-fault" evictions, as part of plans to reform the private rented sector in England
2024 United Kingdom general election
2024_United_Kingdom_general_election
Numbers obtained by adding the two previous ones
"thinnest" AVL tree. These trees have a number of vertices that is a Fibonacci number minus one, an important fact in the analysis of AVL trees. Fibonacci
Fibonacci_sequence
Types of data center network connections
network load and one-to-many traffic patterns. A quantitative analysis of the three-tier, fat tree, and DCell architectures for performance comparison (based
Data center network architectures
Data_center_network_architectures
2025 aviation accident in India
2025). Verma, Sonali (ed.). "Don't carry the burden, it wasn't your son's fault: Supreme Court to pilot's father". India Today. Retrieved 25 May 2026. Tripathi
Air_India_Flight_171
Period of the Government of the United Kingdom since 2024
and update compulsory purchase rules. The Renters' Rights Bill banning no-fault evictions and extending building safety requirements to the private sector
Premiership_of_Keir_Starmer
automated version of root cause analysis, the method of problem solving that tries to identify the root causes of faults or problems. RCASE is now owned
Root Cause Analysis Solver Engine
Root_Cause_Analysis_Solver_Engine
Component whose failure will disrupt the entire system
"A/C" and "Electrical" are in and of themselves completely fault tolerant systems) A fault-tolerant computer system can be achieved at the internal component
Single_point_of_failure
FAULT TREE-ANALYSIS
FAULT TREE-ANALYSIS
Boy/Male
Hindu, Indian
Without Fault
Male
English
English name TREY means "three."
Female
Spanish
Short form of Spanish Teresa, TERE means "harvester."Â
Girl/Female
Latin
Fortunate.
Boy/Male
English American
Three. Also atraigh 'Strand'.
Surname or Lastname
English
English : variant spelling of Salt.French : topographic name for someone who lived near a grove or small wood, Old French saut (Latin saltus).
Girl/Female
Latin
Lover of Hercules.
Surname or Lastname
English (mainly southeastern)
English (mainly southeastern) : topographic name for someone who lived near a conspicuous tree, Middle English tre(w).
Female
English
English form of Irish BrÃgh, BREE means "force, strength."
Boy/Male
American, Australian, British, English, Jamaican
Three
Boy/Male
Muslim/Islamic
Fault-finder
Girl/Female
Hindu, Indian
Beyond Fault
Surname or Lastname
English
English : variant of Mould.
Surname or Lastname
English
English : variant of Fall.Variant spelling of German Faul.
Male
English
Short form of English Trevor, TREV means "large settlement."
Surname or Lastname
English
English : nickname from the wild boar, Middle English galte, gaute, gault (Old Norse gǫltr). Wild boars were common in the British Isles from the earliest times, and became extinct only with the clearing of the large tracts of forest which formerly covered the country; hunting them was a favorite pastime in the Middle Ages.French : from Germanic walþu- ‘wood’, ‘forest’; a topographic name for someone who lived in or near a wood, or a habitational name for someone from any of the places named with this word, for example Le Gault in Loir-et-Cher, Marne, and Eure-et-Loir.
Surname or Lastname
English
English : variant of Trow, mainly of 1.altered spelling of German Treu.
Boy/Male
Italian Latin
Lucky.
Boy/Male
American, Australian, Chinese
Three
Boy/Male
American, Australian, British, Chinese, Christian, English
Three
FAULT TREE-ANALYSIS
FAULT TREE-ANALYSIS
Boy/Male
Hindu
Girl/Female
Tamil
Nabaneeta | நாபநீதா
Girl/Female
Indian
Boy/Male
English
Bridge protector.
Girl/Female
Tamil
Maryada | மரà¯à®¯à®¾à®¤à®¾
Boundary, Rule
Surname or Lastname
English
English : patronymic from the personal name Gilbert.Americanized form of Norwegian Gilbertsen or a cognate in Danish or Swedish.
Boy/Male
American, Australian, French, German, Latin, Portuguese, Swiss
Wood; Silver; Wood Dweller; From the Forest; From the Wood
Male
English
Variant spelling of English Leroy, LEEROY means "the king."
Boy/Male
Arabic, Hindu, Indian
Synonymous of Lord
Boy/Male
Hindu
Lord Rama, God, Supreme spirit, Charming
FAULT TREE-ANALYSIS
FAULT TREE-ANALYSIS
FAULT TREE-ANALYSIS
FAULT TREE-ANALYSIS
FAULT TREE-ANALYSIS
n.
A rapid in some rivers; as, the Sault Ste. Marie.
a.
Guilty of a fault, or of faults; hence, blamable; worthy of censure.
v. t.
To form with a vault, or to cover with a vault; to give the shape of an arch to; to arch; as, vault a roof; to vault a passage to a court.
v. i.
To err; to blunder, to commit a fault; to do wrong.
n.
The act of finding fault or blaming; -- used derogatively. Also Adj.
v. t.
To charge with a fault; to accuse; to find fault with; to blame.
n.
In coal seams, coal rendered worthless by impurities in the seam; as, slate fault, dirt fault, etc.
n.
Something constructed in the form of, or considered as resembling, a tree, consisting of a stem, or stock, and branches; as, a genealogical tree.
n.
A cross or gallows; as Tyburn tree.
n.
One who seeks out faults.
v. t.
To drive to a tree; to cause to ascend a tree; as, a dog trees a squirrel.
a.
Containing faults, blemishes, or defects; imperfect; not fit for the use intended.
imp. & p. p.
of Tree
v. t.
To place upon a tree; to fit with a tree; to stretch upon a tree; as, to tree a boot. See Tree, n., 3.