<s>
A	O
hazard	B-Device
analysis	I-Device
is	O
used	O
as	O
the	O
first	O
step	O
in	O
a	O
process	O
used	O
to	O
assess	O
risk	O
.	O
</s>
<s>
The	O
result	O
of	O
a	O
hazard	B-Device
analysis	I-Device
is	O
the	O
identification	O
of	O
different	O
types	O
of	O
hazards	B-General_Concept
.	O
</s>
<s>
A	O
hazard	B-General_Concept
is	O
a	O
potential	O
condition	O
and	O
exists	O
or	O
not	O
(	O
probability	O
is	O
1	O
or	O
0	O
)	O
.	O
</s>
<s>
It	O
may	O
,	O
in	O
single	O
existence	O
or	O
in	O
combination	O
with	O
other	O
hazards	B-General_Concept
(	O
sometimes	O
called	O
events	O
)	O
and	O
conditions	O
,	O
become	O
an	O
actual	O
Functional	O
Failure	O
or	O
Accident	O
(	O
Mishap	O
)	O
.	O
</s>
<s>
Preliminary	O
risk	O
levels	O
can	O
be	O
provided	O
in	O
the	O
hazard	B-Device
analysis	I-Device
.	O
</s>
<s>
A	O
hazard	B-General_Concept
is	O
defined	O
as	O
a	O
"	O
Condition	O
,	O
event	O
,	O
or	O
circumstance	O
that	O
could	O
lead	O
to	O
or	O
contribute	O
to	O
an	O
unplanned	O
or	O
undesirable	O
event.	O
"	O
</s>
<s>
Seldom	O
does	O
a	O
single	O
hazard	B-General_Concept
cause	O
an	O
accident	O
or	O
a	O
functional	O
failure	O
.	O
</s>
<s>
A	O
hazard	B-Device
analysis	I-Device
will	O
consider	O
system	O
state	O
,	O
for	O
example	O
operating	O
environment	O
,	O
as	O
well	O
as	O
failures	O
or	O
malfunctions	O
.	O
</s>
<s>
IEEE	O
STD-1228-1994	O
Software	O
Safety	O
Plans	O
prescribes	O
industry	O
best	O
practices	O
for	O
conducting	O
software	O
safety	O
hazard	B-General_Concept
analyses	O
to	O
help	O
ensure	O
safety	O
requirements	O
and	O
attributes	O
are	O
defined	O
and	O
specified	O
for	O
inclusion	O
in	O
software	O
that	O
commands	O
,	O
controls	O
or	O
monitors	O
critical	O
functions	O
.	O
</s>
<s>
The	O
severity	O
of	O
consequence	O
identified	O
by	O
the	O
hazard	B-Device
analysis	I-Device
establishes	O
the	O
criticality	O
level	O
of	O
the	O
software	O
.	O
</s>
<s>
ANSI/GEIA	O
-STD-0010-2009	O
(	O
Standard	O
Best	O
Practices	O
for	O
System	O
Safety	O
Program	O
Development	O
and	O
Execution	O
)	O
is	O
a	O
demilitarized	O
commercial	O
best	O
practice	O
that	O
uses	O
proven	O
holistic	O
,	O
comprehensive	O
and	O
tailored	O
approaches	O
for	O
hazard	B-General_Concept
prevention	O
,	O
elimination	O
and	O
control	O
.	O
</s>
<s>
It	O
is	O
centered	O
around	O
the	O
hazard	B-Device
analysis	I-Device
and	O
functional	O
based	O
safety	O
process	O
.	O
</s>
