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

Demand curve for commodity , (1) The following table presents Mary's margi...

(1) The following table presents Mary's marginal utility for each of the four goods she consumes to exhaust her income. The price of Good 1 is $1, the price of Good 2 is $2, the p

Production, What do you understand by “line balancing”? What happens if bal...

What do you understand by “line balancing”? What happens if balance doesn’t exist?

Explain affect your overall impression of the candidate, How does the use o...

How does the use of music in political play a role in establishing a candidate's brand? Does a candidate's use of a song you like (or dislike) affect your overall impression of the

Explain what entry mode would you use, You are the Vice-President for Inter...

You are the Vice-President for International Development of a small U.S. pharmaceutical company (located in Emeryville, California) which specializes in the development of new medi

Resource utilisation & work in progress in organisation, What effect does y...

What effect does your organisation's facility layout have on the following (where appropriate): inter-process movement; health & safety; congestion; resource utilisation; work-in-p

Explain the employees in the chattanooga ice cream case, Who are the employ...

Who are the employees in the Chattanooga Ice Cream Case?

How to determine the capabilities of information systems, A young man has d...

A young man has decided to open his own auto repair shop. He will need a management information system and he has asked you for help. Determine the capabilities of information syst

Linear programing problem, A paper mill produces two grades of paper viz., ...

A paper mill produces two grades of paper viz., X and Y. Because of raw material restrictions, it cannot produce more than 400 tons of grade X paper and 300 tons of grade Y paper i

Explain the three forms of ownership, Answer the following questions on the...

Answer the following questions on the Topic of Forms of Business Ownership 1. Describe the three forms of ownership. Describe two advantages and two disadvantages of each. 2.

Poms-Exercise 01 Decision Tree for Capacity Planning, Ask Poms-Exercise 01 ...

Ask Poms-Exercise 01 Decision Tree for Capacity Planning Expando, Inc. is considering the possibility of building an additional factory that wouldproduce a new addition to its prod

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