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6 Cause-
Consequence
Analysis
Cause-Consequence Analysis
combines bottom up and top down
analysis techniques of Event Trees
and Fault Trees. The result is the
development of potential complex
accident scenarios.
Cause-Consequence Analysis is a
good tool when complex system
risks are evaluated.
7 Change Analysis Change Analysis examines the effects
of modifications from a starting point
or baseline.
Any change to a system, equipment
procedure, or operation should be
evaluated from a system safety
FAA System Safety Handbook, Chapter 9: Analysis Techniques
December 30, 2000
9 - 17
No. Methods and/or
Techniques
Summary Applicability and Use
view.
Cause-Consequence Analysis is also
used during accident/incident
investigation.
8 Checklist Analysis Checklist Analysis is a comparison to
criteria, or a device to be used as a
memory jogger. The analyst uses a
list to identify items such as hazards,
design or operational deficiencies.
Checklist Analysis can be used in
any type of safety analysis, safety
review, inspection, survey, or
observation.
Checklists enable a systematic, step
by step process. They can provide
formal documentation, instruction,
and guidance.
9 Common Cause
Analysis
Common Cause Analysis will
identify common failures or common
events that eliminate redundancy in a
system, operation, or procedure.
Common causes are present in
almost any system where there is
any commonality, such as human
interface, common task, and
common designs, anything that has a
redundancy, from a part,
component, sub-system or system.
10 Comparison-To-
Criteria
The purpose of Comparison-To-
Criteria is to provide a formal and
structured format that identifies
safety requirements.
Comparison-To-Criteria is a listing
of safety criteria that could be
pertinent to any FAA system.
This technique can be considered in
a Requirements Cross-Check
Analysis.
Applicable safety-related
requirements such as OSHA, NFPA,
ANSI, are reviewed against an
existing system or facility.
11 Confined Space
Safety
The purpose of this analysis
technique is to provide a systematic
examination of confined space risks.
Any confined areas where there may
be a hazardous atmosphere, toxic
fume, or gas, the lack of oxygen,
could present risks.
Confined Space Safety should be
considered at tank farms, fuel
storage areas, manholes, transformer
vaults, confined electrical spaces,
race-ways.
12 Contingency Contingency Analysis is a method of Contingency Analysis should be
FAA System Safety Handbook, Chapter 9: Analysis Techniques
December 30, 2000
9 - 18
No. Methods and/or
Techniques
Summary Applicability and Use
Analysis minimizing risk in the event of an
emergency. Potential accidents are
identified and the adequacies of
emergency measures are evaluated.
conducted for any system,
procedure, task or operation where
there is the potential for harm.
Contingency Analysis lists the
potential accident scenario and the
steps taken to minimize the
situation. It is an excellent formal
training and reference tool.
13 Control Rating
Code
Control Rating Code is a generally
applicable system safety-based
procedure used to produce consistent
safety effectiveness ratings of
candidate actions intended to control
hazards found during analysis or
accident analysis. Its purpose is to
control recommendation quality,
apply accepted safety principles, and
priorities hazard controls.
Control Rating Code can be applied
when here are many hazard control
options available.
The technique can be applied toward
any safe operating procedure, or
design hazard control.
14 Critical Incident
Technique2
This is a method of identifying errors
and unsafe conditions that contribute
to both potential and actual accidents
or incidents within a given population
by means of a stratified random
sample of participant-observers
selected from within the population.
Operational personnel can collect
information on potential or past
errors or unsafe conditions. Hazard
controls are then developed to
minimize the potential error or
unsafe condition.
This technique can be universally
applied in any operational
environment.
15 Criticality
Analysis
The purpose of the Criticality
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