A manual assembly line is being planned for an assembled pro

A manual assembly line is being planned for an assembled product whose work content time = 47.2 min The line will be operated 2000 hr/yr The annual demand anticipated for the product is 1(10.000 units Based on previous assembly lines used by the company, the proportion of uptime on the line is exported to be 94% the line balancing efficiency will be 92%, and the repositioning lime lost each cycle will be 6 sec The line will be designed with 1 worker station Determine (a) the required hourly production rate of the line. (b) the cycle tune, (c) the ideal minimum number of workers required, and (d) the actual number of workers required based on the efficiencies given

Solution

(a) Rp= 100,000/2,000 = 50 units/hr

(b) Tc= 60(0.94)/50 = 1.128 min

(c) w* = Min Int47.2/1.128 = 41.84 rounded up to 42 workers

(d) Ts= 1.128 – 0.10 = 1.028 min

w= Min Int47.2/1.028(0.92) = 49.9 rounded up to 50 workers