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

Information systems integration - mrp to erp, Information Systems Integrati...

Information Systems Integration - MRP to ERP  ERP (enterprise resource planning) has been defined by Deloitte and Touche as 'packaged business software systems' that allow com

Describe be sure to justify your reasons, How would you allocate the $100,0...

How would you allocate the $100,000 bonus money and why? Remember, no 2 managers can get the same amount. Be sure to justify your reasons.

Order winning, Order Winning, Order Qualifying and Order Losing Criteria ...

Order Winning, Order Qualifying and Order Losing Criteria Hill (1993) introduced the idea that as well as order winning criteria (OWC), there is also order qualifying criteria

Case study ramada demonstrates its personal best, I have an assignment this...

I have an assignment this week to read "Ramada Demonstrates its Personal Best" on the 'Companion Website.' Do I have access to questions/answers that go along with that?

Explain the generic product development process, Describe the generic produ...

Describe the generic product development process described in this chapter. How does this process change for "technology push" products?

Why it is important for marketers know consumer behaviour, Why it is import...

Why it is important for marketers to fully understand today's consumer behaviour? Explain the factors that influence consumer's buying behaviour.

Explain rapid pace of technological change, You must ponder on an organizat...

You must ponder on an organizations responsibility to its workers whose skills have become obsolete. Considering the rapid pace of technological change, workers jobs will (and must

Explain is overtime expense fully controllable, Is overtime expense fully c...

Is overtime expense fully controllable, partially controllable, or not at all controllable by the supervisor?

Explain concerns for product design in a dfma program, Name and briefly des...

Name and briefly describe the four primary concerns for product design in a DFMA program.

Explain single pay off, in a -------------------employees are reward by giv...

in a -------------------employees are reward by given company stock or by being allow to purchase it at a price below market value/1.gain sharing plan/2.individual payoff/3.esop/4.

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