The table below provides the parameters for a new current state value stream map for the family of retainers at the Jensen Bearings Inc. firm described in the chapter. This table depicts the value stream after Kline Steel agrees to accept daily orders for steel sheets and also agrees to deliver on a daily basis. Calculate each component of the new value​ stream's reduced lead time. Jensen Bearings operates 5 days per week.   Overall Process Attributes Average​ demand: 2,600​/week ​(1,600 ​"L"; 1,000 ​"S") Batch​ size: 1,000 Number of shifts per​ day: 1 ​Availability: 8 hours per shift with two 30 minute lunch breaks                   Process Step 1 Press Cycle time=5 seconds Setup time=2 hours Uptime=​90% Operators=1 Every Part Every=1 week WIP=1 day of sheets​ (before Press) Process Step 2 Pierce​ & Form Cycle time=25 seconds Setup time=30 minutes Uptime=​100% Operators=1 WIP=900 ​"L", 1,150 ​"S" (before Pierce​ & Form) Process Step 3 Finish Grind Cycle time=37 seconds Setup time=45 minutes Uptime=​100% Operators=1 WIP=200 ​"L", 1,450 ​"S" (before Finish​ Grind) Process Step 4 Shipping WIP=400 ​"L", 1,100 ​"S" (after Finish​ Grind) Supplier Information One shipment a day in trays of 60 pieces Information Flow All communications from customer are​ electronic:      ​ 180/90/60/30/day Forecasts       Daily Order All communications to supplier are electronic      ​ 4-week Forecast       Weekly Fax There is a weekly schedule manually delivered to​ Press, Pierce​ & Form, and Finish Grind and a Daily Ship Schedule manually delivered to Shipping All material is pushed   a. How many days of raw material does the​ Bearing's plant now​ hold?   The plant holds enter your response here days of raw material. ​(Enter your response rounded to one decimal​ place.) Part 3 b. How many days of work in process inventory is held between Press and Pierce​ & Form?   The inventory is held enter your response here days. ​(Enter your response rounded to one decimal​ place.) Part 4 c. How many days of work in process inventory is held between Pierce​ & Form and Finish​ Grind?   The inventory is held enter your response here days. ​(Enter your response rounded to one decimal​ place.) Part 5 d. How many days of work in process inventory is held between Finish Grind and​ Shipping?   The inventory is held enter your response here days. ​(Enter your response rounded to one decimal​ place.) Part 6 e. What is the new value​ stream's production lead​ time?   The production lead time is enter your response here days. ​(Enter your response rounded to one decimal​ place.) Part 7 f. What is the new value​ stream's processing​ time?   The processing time is enter your response here seconds. ​(Enter your response as a whole​ number.)

Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
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The table below provides the parameters for a new current state value stream map for the family of retainers at the Jensen Bearings Inc. firm described in the chapter. This table depicts the value stream after Kline Steel agrees to accept daily orders for steel sheets and also agrees to deliver on a daily basis. Calculate each component of the new value​ stream's reduced lead time. Jensen Bearings operates 5 days per week.
 
Overall Process Attributes
Average​ demand:
2,600​/week
​(1,600
​"L";
1,000
​"S")
Batch​ size: 1,000
Number of shifts per​ day: 1
​Availability: 8 hours per shift with two 30 minute lunch breaks                  
Process Step 1
Press
Cycle
time=5
seconds
Setup
time=2
hours
Uptime=​90%
Operators=1
Every Part
Every=1
week
WIP=1
day of sheets​ (before Press)
Process Step 2
Pierce​ & Form
Cycle
time=25
seconds
Setup
time=30
minutes
Uptime=​100%
Operators=1
WIP=900
​"L",
1,150
​"S" (before Pierce​ & Form)
Process Step 3
Finish Grind
Cycle
time=37
seconds
Setup
time=45
minutes
Uptime=​100%
Operators=1
WIP=200
​"L",
1,450
​"S" (before Finish​ Grind)
Process Step 4
Shipping
WIP=400
​"L",
1,100
​"S" (after Finish​ Grind)
Supplier Information
One shipment a day in trays of 60 pieces
Information Flow
All communications from customer are​ electronic:
     ​ 180/90/60/30/day Forecasts
      Daily Order
All communications to supplier are electronic
     ​ 4-week Forecast
      Weekly Fax
There is a weekly schedule manually delivered to​ Press, Pierce​ & Form, and Finish Grind and a Daily Ship Schedule manually delivered to Shipping
All material is pushed
 
a. How many days of raw material does the​ Bearing's plant now​ hold?
 
The plant holds
enter your response here
days of raw material. ​(Enter your response rounded to one decimal​ place.)
Part 3
b. How many days of work in process inventory is held between Press and Pierce​ & Form?
 
The inventory is held
enter your response here
days. ​(Enter your response rounded to one decimal​ place.)
Part 4
c. How many days of work in process inventory is held between Pierce​ & Form and Finish​ Grind?
 
The inventory is held
enter your response here
days. ​(Enter your response rounded to one decimal​ place.)
Part 5
d. How many days of work in process inventory is held between Finish Grind and​ Shipping?
 
The inventory is held
enter your response here
days. ​(Enter your response rounded to one decimal​ place.)
Part 6
e. What is the new value​ stream's production lead​ time?
 
The production lead time is
enter your response here
days. ​(Enter your response rounded to one decimal​ place.)
Part 7
f. What is the new value​ stream's processing​ time?
 
The processing time is
enter your response here
seconds. ​(Enter your response as a whole​ number.)
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