A manual assembly line has 25 workstations and the manning level is 1.0. The work content time to assemble the product is 29.5 min. Production rate of the line is 40 units/hr. The proportion uptime is 96% and the repositioning time is 9 sec. Determine the balance delay on the line

Balance delay is the percentage of wasted time calculated as 100% - efficiency. on the line is 0.085 or 8.5%

Explanation:

Given details

numbers of workstations (n) = 25

manning level = 1.0

work content time (Twc) = 29.5 min

production rate = 40 units/hr

proportion uptime = 96% = 0.96

repositioning time = 9 sec.

balance delay = ?

Solution

Cycle time (Tc) = 60 (0.96) / 40 = 1.44 min

Ts = 1.44 - 0.15 = 1.29 min

Line balance efficiency (Eb) = Twc / (n*Ts) = 29.5/25 (1.29) = 0.915

Balance delay (d) is the percentage of wasted time calculated as 100% - efficiency.

d = 1 - 0.915 = 0.085 = 8.5%