Maryrose Jakeway-Maryrose Jakeway-Mechanical Engineer InternMechanical Engineer Intern

ArcelorMittal Burns Harbor: MEU-PSUSArcelorMittal Burns Harbor: MEU-PSUS

August 2015

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IntroductionIntroduction

Maryrose JakewayMichigan State UniversityMechanical EngineeringExp Grad: December 2016

MEU – Op TechManager: Derek RinaldoMentor: Kaethe Pfeiffer

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What I Did This SummerWhat I Did This SummerFor 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.

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: Learning South PRV: Learning LessonsLessons

500 600 700 800 900 1000 1200200 2.725 3.059 3.38 3.693 4.003 4.31 4.917250 2.151 2.426 2.688 2.943 3.193 3.44 3.929300 1.767 2.005 2.227 2.442 2.653 2.861 3.27400 1.258 1.477 1.651 1.817 1.978 2.136 2.446500 0.993 1.159 1.304 1.441 1.573 1.701 1.95600 0.795 0.946 1.073 1.19 1.302 1.411 1.621700 … 0.793 0.908 1.011 1.109 1.204 1.385800 … 0.678 0.7383 0.877 0.964 1.048 1.209900 … 0.588 0.686 0.772 0.852 0.928 1.071

1000 … 0.514 0.608 0.688 0.761 0.831 0.9621100 … 0.453 0.545 0.619 0.687 0.75 0.872

InputTemperature (°F) 900Pressure (PSIA) 900Sp. Volume (ft3/lb) 0.852Diameter (inches) 20Min Velocity (ft/s) 100Max Velocity (ft/s) 300 1250

OutputMin Capacity (klb/h) 921.83Max Capacity (klb/h) 2,765.49 135.6

Pres

sure

(PSI

A)

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

Questions?

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