Question
An x-ray machine may be used for general x-rays as well as for special hip x-rays. The time to convert the x-ray machine from general
An x-ray machine may be used for general x-rays as well as for special hip x-rays. The time to convert the x-ray machine from general use to hip x-rays is 45 minutes. The x-ray machine is quite expensive but is very reliable. The arrival of general and special hip requirement is random and may not be scheduled.
The x-ray machine is in use 8 hours per day, 365 days per year, and has a reliability factor of 98%.
- Refer to the scenario above. Given the following data, how many x-ray machines should be purchased?(10 points)
Type the equations used on a separate page
Indicate what each equation is solving for
General X-Ray Special Hip X-Ray
Operator efficiency 100% 100%
Pd&f 50 min per 8-hour shift 50 min per 8-hour shift
Standard time 12 min per patient 15 min per patient
(+ 45 min to convert machine)
Annual frequency 11,000 2500
General X-Ray
How many Patients per shift _______________________________
Total available mins per shift ________________________________
Total effective mins per shift ________________________________
Available time per patient ________________________________
Number of Machines ________________
Special Hip X-Ray
How many Patients per shift _______________________________
Total available mins per shift ________________________________
Total effective mins per shift ________________________________
Available time per patient ________________________________
Number of Machines ________________
TOTAL NUMBER OF MACHINES NEEDED ________________
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