Q/

A worker performs a repetitive assembly task at a workbench to assemble products. Each product consists of 25 components. Various hand tools are used in the task. The standard time for the work cycle is 7.45 min, based on using a PFD allowance factor of 15%. If the worker completes 75 product units during an 8-hour shift, determine (a) the number of standard hours accomplished and (b) worker efficiency. (c) If the worker took only one rest break, lasting 13 min, and experienced no other interruptions during the 8 hours of shift time, determine her worker performance.

Normal Time - The time to complete a task when working at normal performance - Actual time to perform the cycle depends on worker performance Tc=Tn/Pw where Tc= cycle time, Tn= normal time, and Pw= worker performance or pace Standard Time Defined as the normal time but with an allowance added into account for losses due to personal time, fatigue, and delays Tstd=Tn(1+Apfd) where Tstd= standard time, Tn= normal time, and Apfd= PFD allowance factor