2. 08/04/15 Jakeway, Maryrose 2
IntroductionIntroduction
Maryrose Jakeway
Michigan State University
Mechanical Engineering
Exp Grad: December 2016
MEU – Op Tech
Manager: Derek Rinaldo
Mentor: Kaethe Pfeiffer
3. 08/04/15 Jakeway, Maryrose 3
What I Did This SummerWhat I Did This Summer
For Fun
•Reading/Cooking/Painting/Exploring the
Area/Binge Watching TV
•Boat Cruise
•RailCats Game
•White Sox Game
For Work
•Safety Tours & Training
•Eagle Incident Report
•Power Station SPRV
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Tours & Training (1-2)Tours & Training (1-2)
Safety Tours
•Sewage Pumping Station
•Shops Complex
• Docks
• Locomotive Repair
• Fabrication Shop
• Machine Shop
• Crane Repair
• Central Spares
• Main Shop &
Annex Building
• Blast Furnace
Closed Water
Pumping Station
• Lakewater
Pumping Station
No. 1
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Tours & Training (2-2)Tours & Training (2-2)
Additional Tours
•Power Station
•Steel Producing
•Iron Producing
•Sinter Plant
•Hot Mill
•I/N Tek & I/N Kote
•Research & Development
Training
•CPR / First Aid
•Arc Flash
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ProjectsProjects
Eagle Incident Report
•Created follow-up document for June 6th fire under waste treatment
bridge.
Power Sta South 900/265 psi Steam Pressure Reducing Valve (PRV)
•Modeled S. PRV steam system.
•Analyzed current design to determine nominal operational envelope.
•Compared ideal conditions to 3/20/15 failure.
•In progress: Operational Procedure Report.
7. Safety Valves on 265 # pipe
Damage resulting from 3/20/15
• Learned how to perform an engineering
and failure analysis.
• First learn how and why things
work.
• Then look at a failure.
• What fails? When? Why? How?
• Knowing max steam flow rates at
different pressures/ temperatures
changes the operating envelope of the
system and how the equipment will
respond.
• Develop a “model” of the system.
South PRV: LearningSouth PRV: Learning
LessonsLessons
8. 500 600 700 800 900 1000 1200
200 2.725 3.059 3.38 3.693 4.003 4.31 4.917
250 2.151 2.426 2.688 2.943 3.193 3.44 3.929
300 1.767 2.005 2.227 2.442 2.653 2.861 3.27
400 1.258 1.477 1.651 1.817 1.978 2.136 2.446
500 0.993 1.159 1.304 1.441 1.573 1.701 1.95
600 0.795 0.946 1.073 1.19 1.302 1.411 1.621
700 … 0.793 0.908 1.011 1.109 1.204 1.385
800 … 0.678 0.7383 0.877 0.964 1.048 1.209
900 … 0.588 0.686 0.772 0.852 0.928 1.071
1000 … 0.514 0.608 0.688 0.761 0.831 0.962
1100 … 0.453 0.545 0.619 0.687 0.75 0.872
Input
Temperature (°F) 900
Pressure (PSIA) 900
Sp. Volume (ft
3
/lb) 0.852
Diameter (inches) 20
Min Velocity (ft/s) 100
Max Velocity (ft/s) 300 1250
Output
Min Capacity (klb/h) 921.83
Max Capacity (klb/h) 2,765.49 135.6
Pressure(PSIA)
Temperature (°F)
Properties of Superheated Steam
Velocity (ft/s)
For known capacity and
unknown velocity, use
alternative input/output.
Alternative Input
Capacity (klb/h)
Alternative Output
This model uses the continuity equation to determine capacity at a
given temperature, pressure, pipe dimension, and an assumed range of
operational velocity.
*specific volume is automatically found using steam table
