Transcript Project Management Tools for Cooper River Bridge Video

Project Management Tools for
Cooper River Bridge Video
Project Managers Must utilize….
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Root cause analysis
Feeder buffers
Quality at the source
Appropriate parallel or redundant processes
to advance safety and reliability
Let’s say that you have a 100 year old
house. A small electrical fire starts in
the bedroom. Always prepared, you
have a fire extinguisher handy and put
out the fire. Have you taken care of the
problem??
As a manager is fire fighting good or
bad? Will the problem resurface?
What is a root cause?
The most basic causal
factor, or factors,
which if corrected or
removed will prevent
the recurrence of a
situation……
Root Cause Analysis
“The 5 Whys”
Problem Statement: You are on your way home from work and your
car stops in the middle of the road.
1. Why did your car stop?
- Because it ran out of gas.
2. Why did it run out of gas?
- Because I didn't buy any gas on my way to work.
3. Why didn't you buy any gas this morning?
- Because I didn't have any money.
4. Why didn't you have any money?
- Because I lost it all last night in a poker game.
5. Why did you lose your money in last night's poker game?
- Because I'm not very good at "bluffing" when I don't have a good
hand.
Can you utilize a feeder buffer in a
project to prevent future problems
without knowing the root cause of the
original problem?
Adding Feeder Buffers to Critical Chains
• The theory of constraints, the basis for critical chains, focuses on keeping
bottlenecks busy.
• Time buffers can be put between bottlenecks in the critical path
• These feeder buffers protect the critical path from delays in non-critical
paths
What feeder buffers could have been
used in the Cooper River Bridge
construction to prevent delays?
Total Quality Management
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Build quality into all processes
Focus on continuous improvement - Kaizen
Quality at the source- sequential inspection
Jidoka (authority to stop line)
Poka-yoke (fail-safe all processes)
Preventive maintenance- scheduled
Work environment- everything in its place, a place
for everything
Did the Cooper River Bridge crew
utilize Total Quality Management?
Designing Process Reliability/Safety
• Probability between 0 and 1 that a process
will perform its function or will be performed
safely/reliably for a given period of time under
specified operating conditions
• From a project management perspective how
can you eliminate problems or unsafe
situations?
Reliability Management
• Series product/service
components
Rs  ( p 1 )( p2 )( p3 ).......(pn )
• Parallel product/service
components
Rs 1 (1 p1 )(1 p2 )(1 p3 )........(
1 pn )
Series Reliability Example
R1
R2
R3
.90
.80
.99
Rs
Reliability/safety of the process is
Rs = R1 x R2 x R3 = .90 x .80 x .99 = .713 or 71.3%
© 2011 Pearson Education, Inc.
publishing as Prentice Hall
Processes in Parallel Utilizing
Redundancy
A redundant process is installed to support the
earlier example where Rs = .713
R1
R2
0.90
0.80
0.90
0.80
R3
Reliability/Safety has
increased from .713 to
.94
0.99
= [1-(1-.9)(1-.9)] x [1-(1-.8)(1-.8)] x .99
= [1-.01] x [1-.04] x .99
= .99 x .96 x .99 = .94
© 2011 Pearson Education, Inc.
publishing as Prentice Hall
What safety issue on the Cooper River
Bridge project could have been
improved with a redundant process?
Utilize root cause analysis.
Q&A
1. What feeder buffers could have been used to solve problems:
Concrete drying too fast: They can solve this by setting up concrete plant close
by on shore
Steel workers having to wait all day to work and then having to work all night:
Having cranes on both sides of the bridge can avoid this problem
Bridge panels installed in the wrong order: They can be staged in order on the
ground to avoid it.
Q&A
2. How quality at the source could have prevented the wrong bridge panel from
being installed.
This was caused by workers just focusing on speed and productivity. If the
employees had had more training, and were empowered to improve the quality of
the process, it would have helped.
3. What parallel process could have been used to insure workers’ safety when up
on the bridge.
By “buddying” up on safety lines. The pair can remind each other to ensure the
safety as a team. If either one gets caught up top working without a safety line, the
buddy AND partner get fired.
Q&A
4. What is Root cause analysis? How to apply it?
Root cause analysis is discovering a course of action that if followed will cause the
problem to never occur again.
From the story in the slides, a fire extinguisher was used to put out the house fire. Get
a new fire extinguisher and problem is solved for the future….right? Not so fast!
Could the problem happen again…..yes. So, use the five “Whys” to seek out a root
cause for the fire:
Why did the house catch on fire? ……because a hot wire touched wallpaper or wall
board. Why did it touch the wallpaper or wall board? ….the wall sagged a little. Why
did the wall sag? …..it was wet from a roof leak. Why did the roof leak? ……because
it’s in a state of disrepair. Why is it in a state of disrepair?......aged inhabitants are
living on a fixed income. How to help aged people get $$ to fix roof? ……ask
volunteer groups for help to fix the roof. Will fixing the roof keep the problem from
ever happening again? Maybe not…..house could need new wiring, etc. Fighting fires
as a manager is always attacking the symptoms and really never solving the problem.