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 the ten commandments of america culture, Go toto gmi.org and search...

Go toto gmi.org and search for "The Ten Commandments of America Culture." The list presents ten sayings that represent commonly accepted American cultural values. Think about how t

Explain understanding of human behaviour, Explain understanding of human be...

Explain understanding of human behaviour. Understanding of Human Behaviour: Understanding human behaviour is significant for any one dealing along with human resources. This

Explain perspective of project manager to avoid the obstacle, Analyze why i...

Analyze why it is important to address risk through the entire project life cycle. Identify three possible negative results that can occur if an organization fails to address risk

Compute the total annual cost, A local nursery, Greens, uses 2184 bags of p...

A local nursery, Greens, uses 2184 bags of plant food annually. Greens works 52 weeks per year. It costs $8 to place an order for plant food. The annual holding cost rate is $2 per

Break Even Sales, K Ltd a multi product company, furnishes you the followin...

K Ltd a multi product company, furnishes you the following data relating to the year 2000. First half sales Second half sales Sales Rs.45000 Rs.50000 Total cost Rs.40000 Rs.43000

Explain object oriented database model, The relational database model gaine...

The relational database model gained popularity and many proponents during the 1980's and 1990's, a period of time in which IT organizations were seeking to consolidate data from m

Determine the optimal solution nonlinear programming model, The Hickory Cab...

The Hickory Cabinet and Furniture Company makes chairs and tables. The company has developed the following nonlinear programming model to determine the optimal number of chairs (x1

Natural resource - factor affecting productivity improvement, Natural Resou...

Natural Resources - Factors Affecting Productivity Improvement Natural resources The manner in which countries use the resources at their disposal is of major importance,

Explain human resource strategic partner''s specialized, Is the Human Resou...

Is the Human Resource strategic partner's specialized approach a little boring to the employees and the organization?

Oprational strategies, 1.technology strategy 2.capacity strategy 3.facility...

1.technology strategy 2.capacity strategy 3.facility location strategy 4.process strategy 5.quality strategy

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