Consider the system ABC that consist of modules Units A$,$ B$,$ C$,$ D and E as shown below. The top level requirements aare that average Mct needs to be less than $1$ hour, average mpt$,$ less than $2.0$ hours. MLH$/$OH factor is $0\mathrm{.}4$ and cost at the top level is $$200,000.$

a$.$ Allocate the quantity factors to the unit levels assuming that estimated Corrective Maintenance Time and Estimated preventive Maintenance Time are associated with complexity rank factors in the table given on the right hand side. Detremine the allocation of Mct$,$ Mpt$,$ MLH$/$OH and Cost of each unit

b What is the System Level Mct and Mpt and does it meet the requirments

c$.$ Considering that the System Operating Hours $($OH$)$ is $10,000$ hours, what is the estimated number of corrective maintenance actions per year for each unit $($round up to the nearest interger whole number$)$

Complexity Rank Factor Estimamted Corrective Maintenance time $($Mct $)$ Hrs Estimamted preventive Maintenance time $($Mpt $)$ Hrs

$10\mathrm{.}61$

$20\mathrm{.}81\mathrm{.}5$

$312$

$41\mathrm{.}22\mathrm{.}5$

$51\mathrm{.}43$

The system is branched into $5$ modules:

System ABC

Requirements:

Mct $<=1$ hr

Mpt $<=2$ hr

MLH$/$OH $=0\mathrm{.}4$

Cost $=$ $$200,000$

Unit A

$?=\mathrm{.}003645$

Mct$=?$

Mpt$=?$

MLH$/$OH$=?$

Cost$=?$

Unit B

$?=\mathrm{.}002759$

Mct$=?$

Mpt$=?$

MLH$/$OH$=?$

Cost$=?$

Unit C

$?=\mathrm{.}00315$

Mct$=?$

Mpt$=?$

MLH$/$OH$=?$

Cost$=?$

Unit D

$?=\mathrm{.}00136$

Mct$=?$

Mpt$=?$

MLH$/$OH$=?$

Cost$=?$

Unit E

$?=\mathrm{.}0017$

Mct$=?$

Mpt$=?$

MLH$/$OH$=?$

Cost$=?$