Download OEE - Lean Systems - Past Exam and more Exams Control Systems in PDF only on Docsity!
Semester I Examinations 2010/ 2011
Exam Code(s) 4BI1, 1APE1, 1APE2, 1EM
Exam(s) 4BI Industrial Engineering M.Applied Science (Enterprise Systems) Erasmus
Module Code(s) IE Module(s) Lean Systems
Paper No. 1 Repeat Paper
External Examiner(s) Prof. Jiju Antony Internal Examiner(s) Ms. Mary Dempsey * Prof. Peter McHugh
Instructions: Answer Question 1 and one other question.
Question 1 is compulsory and is allocated 60% of the marks. The second question is allocated 40% of the marks.
Duration (^) 2 Hours
No. of Pages Cover + 3 pages College/Discipline Mechanical and Biomedical Engineering Course Co-ordinator(s) Ms Mary Dempsey
Requirements : None
Q1. COMPULSORY
[Note: A list of all icons required to produce the current state map is provided on page 4]
It was an ordinary day in the life of an NUI Galway student. Examination time was upon me. I had a written examination in IE450 Lean Systems at 9.30am. Breakfast was rushed but I managed to leave home at 8.15am. Returned a few minutes later, forgot my keys, managed to find them and finally left home (again) by 08.30. Arrived at the University at 09.00am, dropped the car off in the park and ride car park waited 5 minutes for the bus which did not arrive. I walked to the examination hall which took 10 minutes. I eventually found my seat in a centre that has a capacity for 500 students after a 10 minute queue to search through documentation displayed on the wall. It took an additional 8 minutes to answer all the security questions about my ID which I forgot to bring with me and I was fined 10 Euro which took another 3 minutes to process. I finally settled into the examination six minutes into the exam time.
i) Produce a current state Value Stream map from this data, depicting both the material/human and information flows. Include a timeline at the bottom of your map, showing the total lead-time from departure from home to the start of the examination.
ii) Identify the value added time and the throughput time for this logistical process between the hours of 8.15am and 9.36am i.e. 1 hour 21 minutes.
iii) Suggest Lean improvements for this process. Identify and describe some of the improvement opportunities that can be applied to the current state processes. Describe your ambitions for a future value stream map and a future future value stream map.
iv) Eliminating the queuing quickens the time it takes to flow through a system. What are the disadvantages of removing those parts?
Q2.
i) Overall Equipment Effectiveness involves three main components in the calculation of OEE. What are these components?
ii) What are the Six big losses associated with OEE
iii) How do you Improve OEE?
iv) What is the value of OEE as an improvement metric in Lean Manufacturing.
Current state Value Stream mapping icons:
FIFO
Supermarket
Signal Kanban
Withdrawal Kanban
Production Kanban Level Loading
Pull
Kanban arriving in batches
Kanban Path
Kanban Post
First-In First-Out Flow
Outside Sources
Inventory Triangle
Information Process Box
Data Box (^) Person / People
