Assume the following:

--Submit request is normal distribution with average time of 15 minutes (3 min s.d.)

--Select equipment is normal distribution with average time of 30 minutes (5 min s.d.)

--Check availability is normal distribution with average time of 5 minutes (1 min s.d.)

--Review rental request is exponential distribution with average time of 30 minutes

--Create PO is normal distribution with average time of 10 minutes (1 min s.d.)

--Equipment is available 75% of the time

--Request is approved 80% of the time

--Site Engineer earns $36/hour

--Clerk earns $12.50/hr

--Works Engineer earns $45/hour

1. Model and simulate the AS-IS process. Use an Exponential inter-arrival time of 1 day. Simulate 100 instances. Record the total cost, process cycle times excluding off-timetable hours, resource utilization, instance costs, and time/duration/costs for each activity.

2. Model and create a TO-BE process. The TO-BE process should allow the site engineer to view the catalog, select equipment, and trigger a PO as long as the equipment is within budget. If not in budget, the works engineer must approve. Use the same assumptions as before; assume that the site engineer requires 10 minutes (exponential) for reviewing budget and is within budget 95% of the time. Simulate the TO-BE process. Use an Exponential inter-arrival time of 1 day. Simulate 100 instances. Record the total cost, process cycle times excluding off-timetable hours, resource utilization, instance costs, and time/duration/costs for each activity.

3. Analyze the impact of the TO-BE process in terms of time and cost. Explain whether the process should be performed in this manner.

4. Design a second TO-BE model using the heuristic principles. State which heuristic you are applying. State the assumptions you have to make. Simulate the TO-BE process. Use an Exponential inter-arrival time of 1 day. Simulate 100 instances. Record the total cost, process cycle times excluding off-timetable hours, resource utilization, instance costs, and time/duration/costs for each activity.

5. Analyze the impact of your TO-BE model in terms of time and cost. Explain whether the process should be performed in this manner.

Site Eng Submit equipment rental request New Equipment Needed Clerk Select suitable equipment Check availability Create PO PO Created Works Eng Approved Rejected Review rental request Request Rejected Site Eng Submit equipment rental request New Equipment Needed Clerk Select suitable equipment Check availability Create PO PO Created Works Eng Approved Rejected Review rental request Request Rejected