Tasks, predecessors and times - process design, Operation Management

Assignment Help:

Tasks, Predecessors and Times - Process Design

1329_Tasks, Predecessors and Times - Process Design 1.png

The first step in the procedure is to draw a precedence diagram, shown here, the task labels and times entered in the nodes.

The next step is to determine the cycle time required to deliver the stipulated rate of output: 

Time cycle = productive time available per hour / output per hour

3600 output per hour / (8,000/5*8)) mail shots per hour = 18 seconds

We then calculate the theoretical minimum number of workstations required. This would be the result if it were possible to design the line such that the task times were evenly spread among the workstations; a very unlikely outcome in practice. However, as we will see later, it can be used to assess the utilisation of the practicable line layout produced by the procedure.

286_Tasks, Predecessors and Times - Process Design 2.png

Theoretical minimum number of workstation = Sum of task times/cycle times = 80/18

=4.4 workstations

The next stage, the allocation of tasks to workstations, is usually conducted by heuristic (ie rule-of-thumb) methods. There are several such heuristics; we will use one of the simpler ones, the longest-task- time heuristic, the results of its application being displayed in the table below. It begins with the first workstation and consideration of the candidate tasks that could be allocated to it. In this case there is only one candidate, 'A', since no other task can begin until 'A' is complete. 'A' is allocated, its time entered, and the remaining unassigned part of the 18-second cycle time calculated and entered (18 - 15 = 3 seconds).


Related Discussions:- Tasks, predecessors and times - process design

Define what are the advantages of financing via the internet, In the What w...

In the What would you do section of your text in section 9, Pam Marrone of AgraQuest, Inc. tapped into Internet sources when she needed additional financing. Be specific and suppor

Explain business-level strategy, "Business-Level Strategy" Please respond t...

"Business-Level Strategy" Please respond to the following: • From the first e-Activity, assess your satisfaction with the company you researched and make recommendations about h

Explain waiting for my physical delivery, Can I access the eBook while wait...

Can I access the eBook while waiting for my physical delivery?

Production efficiencies and reducing unit costs, A manufacturer concerned m...

A manufacturer concerned mainly with production efficiencies and reducing unit costs is known as Production oriented.

Explain what is change management, 1. Explain What is change management? 2...

1. Explain What is change management? 2. Explain What is the ultimate goal of change management?

Explain five key economic variables, Identify five key economic variables t...

Identify five key economic variables that could represent major opportunities or threats to a bank in your town or city. Identify which that you believe to be most important, and d

Depict a decision tree for problem, A manager is trying to decide whether t...

A manager is trying to decide whether to build a small medium, or large facility. Demand can be low, average, or high, with the estimated probabilities being 0.25, 0.40, and 0.35,

Explain the behaviors often incorporated by entrepreneurial, For years, Dav...

For years, David and Evie Wexler of The Little Guys Home Electronics had many ideas about how to improve the home electronics store in which they were working, but could not put th

Explain an in-n-out pay strategy, An In-N-Out Pay Strategy: Costa Vida's De...

An In-N-Out Pay Strategy: Costa Vida's Decision to Boost Pay

Proposed solutions to combat conflicts of interest, Three major solutions h...

Three major solutions have been proposed to combat the medical industry conflicts of interest detailed above in this paper. The first solution is embodied in the Physician Payments

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