Line Balancing, Operation Management

Assignment Help:
#What do you understand by “line balancing”? What happens if balance doesn’t exist?uestion..

Related Discussions:- Line Balancing

Explain advantages of division of labour, Explain advantages of Division of...

Explain advantages of Division of Labour.  As the same worker does similar work repeatedly:- (i) It gains proficiency and skill on the job and becomes a professional. (ii

Explain travel time of a community, A bank is planning to serve the rural c...

A bank is planning to serve the rural communities shown in figure 10.8 with automated teller machines (ATMs). The travel time in minutes between communities in the service area is

Explain negotiable instrument, Nan read the note that Tom had just given he...

Nan read the note that Tom had just given her. She was doing some home repair for Tom. The note represented the $10,000 that Nan and Tom agreed upon for all of the work. The note r

Compute the cost per hire for the scenario, Calculate the cost per hire for...

Calculate the cost per hire for the following scenario. Show your calculation for partial credit. If you only provide one number, and it is incorrect, I will not know how close you

Explain decision tree analysis superior products, Homework for Chapter 5: D...

Homework for Chapter 5: Decision Tree Analysis Superior Products Inc. is considering two potential equipment alternatives for production of their best selling product line. Option

Courtesy - customer satisfaction and service quality, Courtesy - Customer S...

Courtesy - Customer Satisfaction and Service Quality Involves politeness, respect, consideration and friendliness of contact personnel (including receptionists, telephone oper

Explain various types of media that attracted your attention, List five adv...

List five advertisements from various types of media that attracted your attention. Discuss the characteristics that determined your selection

Share the data and understanding of the data, •Using the Internet, research...

•Using the Internet, research statistics using PollingReport.com. •Select a topic from either the "In the News" section or the "Issues" section. •Study the data that the Website pr

Daina

2/12/2013 7:08:07 AM

Line Balancing
- Line: an assembly line composed of various work stations, at which particular operations are performed.

- To work efficiently, with no work pile-ups between stations, the line must be balanced, for example work must get through each workstation in roughly similar amount of time.
Goals:
1. To meet production goals,
2. Maximize output.

General Approaches to Line Balancing Technique
1. Estimating number of operators for a specific number of stations,
2. Work element sharing: grouping “activities” each work elements into “stations” or jobs performed by a single person (occasionally multiple people work in concert at a single station or machine)

Diana

2/12/2013 7:09:42 AM

Write your Aim – It only applies to assembly lines. It aims at minimizing the idle time along the line by dividing work equally among members. Tasks are grouped in such a way that they have equal time requirement.

When is line Balancing is Done

· When the line is initially set-up

· When the changes are made in process / desired output rate

Difficulty associated with LB – Not feasible to combine certain activities

Necessity of line balancing – In absence of line balancing, it might create morale problem for workers at slower station who work continuously

(Draw Precedence Diagram)

Cycle Time = Longest time at the any of the work element OR (Operating Time / Desired Output Rate)

CT = 1 min

(In Question, it may be given as 480 units per 8-hour day, Hence CT = 8*60 min per day / 480 units per day = 1 minute per cycle)

Theoretical Minimum number of workstations, Nmin = Sum of time at all WS / CT = (0.1+1.0+0.7+0.5+0.2) / 1.0 = 2.5 = 3 Workstations

Rules in Assigning task

1. Choose new WS if

a. All preceding tasks are completed

b. Task Time is less than or equal to Time Remaining

2. Always first assign the task with greatest task time to a workstation, in case there is a choice between work elements. In case task time is same, choose the element having greatest number of followers.

3. For every new WS, always start with cycle time

WS


Time Remaining


Eligible


Assign Task


Revised Time remaining


WS Idle Time

1


1.0


A,C


C(0.7)


0.3 (1.0-0.7)




0.3


A


A(0.1)


0.2


0.2

2


1.0


B


B(1.0)


0


0

3


1.0


D


D(0.5)


0.5




0.5


E


E(0.2)


0.3


0.3

Total Idle time = 0.2 + 0.3 = 0.5 minutes

Balance Delay in % (% of idle time on assembly line) = Total idle time * 100/ (Actual No of WS * Cycle Time)

=0.5*100/(3*1) = 16.7%

Line efficiency = 100% - Balance delay% = 83.3%

Other considerations in line-balancing

1. Technical considerations –

a. Skill requirement of different tasks - If the skill requirements of tasks are quite different, it may not be feasible to place the tasks in the same workstation

b. Incompatible tasks - If the tasks themselves are incompatible (example – Use of fire and flammable liquids), it may not be feasible even to place them in stations that are near to each other

2. Variable tasks by human –

a. Reasons for variation are Fatigue, boredom and failure to concentrate on the task at hand.

b. Absenteeism can also affect the balance

Other approaches to achieve smooth flow of production

1. Make parallel workstations – They increase the workflow and provide flexibility

2. Cross-train workers / Dynamic line balancing – It helps workers perform more than 1 task. In case they are idle, they can assist other workers who are temporarily over-burdened

3. Mixed model line - Design a line to handle more than 1 product on the same line. The different products are similar in many ways and hence, the process applied on them is also samemessage here..

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd