Final answer:
To calculate available manhours correctly, consider average service time, variability, time constraints, and factors such as overtime and leave. Review the Activities Overview for scheduling and factor in time constraints with a comprehensive approach. Analyze sample data to determine if the projected manhours will sufficiently cover the workload.
Step-by-step explanation:
To ensure available manhours are calculated correctly when building in-service work plan schedules, several factors must be taken into account. Primarily, the average time a technician spends servicing a unit must be considered along with the standard deviation of those times. For instance, if the average servicing time is one hour with a standard deviation of one hour, this variability must be factored in. It is important to create a buffer in scheduling to accommodate variability in service times.
Furthermore, all components of the Activities Overview need to be reviewed, such as the schedule of work, dates of availability, and due dates. A comprehensive time budget constraint should also be employed, acknowledging that each individual has a total of 24 hours in a day, which must be divided between working hours and leisure time. Any adjustments to the plan must reflect the realities of this time constraint.
Considering your company's decision to budget an average of 1.1 hours per technician for servicing air conditioners, you must analyze whether this is sufficient. This can be done by using the sample time data from servicing 70 units and determining if the budgeted time would accommodate the observed variability in the data. If more than one technician is working, the total manhours available will increase, and you will need to take into account possible scenarios such as overtime, lieu time, the pay schedule, safety requirements, and procedures for handling times when a technician is late, sick, or takes time off.