Hw 5
Chapter 7 problem 9
Chapter 9
Hw 6
Chapter 8
Problems 3, 5, 9.
Problem 3
Problem 5
Problem 9
Hw 7
3, 5 and 10 chapter 9
Problem 3
Problem 5
Problem 5
Hw 8
1, 3, 5 Chapter 13
Problem 1
Problem 1
Problem 1
Problem 3
Problem 5
CHAPTER 3
Material Requirements Planning (MPR): Push Sys
-Independent Demand finished products
-Dependent Demand components
It makes no sense to independently forecast dependent
demands.
Assumptions
1. Known deterministic demands.
2. Fixed, known producti
Chapter 9: Influence of Variability: If variability of any
kind- process, flow, batching is increased something
has to give. Inventory will build up, throughput will
decline, lead times will grow. Need variability
reduction
Capacity Laws
Capacity Law: In
(a) Old line has larger critical WIP, because parallel stations require more inventory to "fill up".
(b) Line Actual TH Actual WIP TH_PWC(Actual WIP)
Old 39.375 400 39.2 Performing better than PWC
New 85 350 119.0 Performing worse than PWC
The old line is
Manufacturing Systems
Exam 3 Study Questions
Chapters 9, 10
Hw problem 3
Compute the capacity (jobs per day)
a)A single machine with a mean process
time of 2.5 hrs and a SCV of 1. There are 8
work hours per day
(1 j/2.5 h)*8 h/d = 3.2 j/d
b) SCV = 0.5
(1
Chapter 13, 14 and 15
1. Pull systems are good for planning, but worse than push systems for operational
execution.
True
False
2. Name any two measures of forecast error.
a.
b.
3. Name any two modules in hierarchical production planning.
a.
b.
4. In gener