In: Operations Management
4). Eight maintenance activities, their normal durations in weeks, and the crew sizes for the normal condition are as follows:
Activity |
Duration in Weeks |
Crew size |
AC |
6 |
8 |
BC |
6 |
7 |
BE |
2 |
6 |
CD |
3 |
2 |
CE |
4 |
1 |
DF |
7 |
4 |
EF |
4 |
6 |
FG |
5 |
10 |
Extra Crew |
Weeks Saved |
Crash cost per week |
1 |
1 |
$100 |
2 |
2 |
$120 |
3 |
2 |
$200 |
4 |
3 |
$250 |
If there is a penalty cost of $1,250 per week beyond the minimum maintenance time of 20 weeks, recommend the minimum cost schedule.
Activity |
Optimistic |
Most Likely |
Pessimistic |
AC |
5 |
6 |
8 |
BC |
4 |
6 |
10 |
BE |
2 |
2 |
2 |
CD |
2 |
3 |
7 |
CE |
2 |
4 |
9 |
DF |
5 |
7 |
13 |
EF |
3 |
4 |
6 |
FG |
4 |
5 |
16 |