Abstract:
This study deals with the reliability and availability ch
aracteristics of two different systems,
the
second system differs from the first system due to the additional feature of preventive
maintenance. Reliability and Availability analysis of system having one active unit and one
warm stand
-
by unit with self
-
res
et function and one maintenance facility. The failure unit is
repaired through self
-
reset or maintenance according
to different failure model.( Mean
Time to System Failure)
, Steady
-
State Availability, Busy P
eriod Analysis and Profit
Function are derived f
or the two systems
using linear first order differential e
quations. Two
systems were evaluated
theoretically and
graphically to observe the effect of preventive
maintenance on systems performance. The result
finally shows that increase
in
failure rate
lead
s to decrease in
MTSF, Steady
-
State
Availabilit
y and Profit Function of figure 4.1, 4.2
and 4.3.
It was
also
found that
increase in
repair rate
leads to increase in
MTSF, Steady
-
State
Availability and
Profit Function of figure 4.4, 4.5, and 4.6. Therefore,
the result
indicated
that second system originate better
reliability due to the additional feature of
preventive maintenance.
