ML20045G203

Forwards Outline for Tracg Course Taught at Ge.Ten Hr Required for Tracg Model Description & Qualification & Eight Hr Required for Tracg Input Description & Application

ML20045G203
Person / Time
Site:	05200004
Issue date:	07/01/1993
From:	Andersen J GENERAL ELECTRIC CO.
To:	Malloy M Office of Nuclear Reactor Regulation
References
NUDOCS 9307130039
Download: ML20045G203 (4)

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GE Nuclear Energy GeneralElectric Company 175 Curtner Avo. M/C 186 San Jose, CA 95125 ff-6Oh July 1,1993 M0inda Malloy Senior Project Manager Of fice of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, DC 20555 Dear Ms Malloy in the attachment, you will find the outline for the TRACG course, which we have taught at Gl!. The approximate amount of time required for each task is indicated in the outline. Approximately 10 hrs are required for TR ACG model description and qualification, and 8 hrs are required forTR ACG input description and application. This material can be coveredin 3 days. The work shop require that a significant amount of time is spent between lectures generating input decks and running TR ACG, and it is typically spread over 4 weeks.

Sincerely yours, M I whk hh Jens G. Munthe Andersen Supervisor, Safety & Thermal flydraulic Methods rc; W. Manluino J. R. Rash

11. S. Shiralkar p

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9307130039 930701 f PDR ADOCK 05200004 A PDR 4

x s TRACG Course & Workshop i

Outline TRACG modular structure I hr

. TilACG components and interactions

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TRACG 1D and 3D Thermal hydraulic model 4 hr

. Ilasic model

- Conservation equations for mass, momentum and energy l 1

- Flow regimes Interfacial shear and heat transfer

- Wall heat transfer )

- Friction

- Thermal radiation heat transfer

- Critical flow and CCFL l

- Mixing 1

- IIcat conduction equation l

. Component models

- Pump l

- Valve

- Jet pump

- Steam separator

- Steam dryer

- Fuelchannel

- Upper plenum

. Numerical method

- Linearization of conduction equation

- Linearization of momentum equation

- Linearization of mass and energy equations

- Pressure solution

- Ilack sub.ititution

- Corrector step 2

TRACG kinetics model I hr e Point,1D, and 3D kinetics models Void, doppler, control rod and boron reactivity feedback

• Cross section specification l

e decay heat models  ;

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. Direct moderator heating l

• Numerical method

. Thermal hydraulics / kinetics interfaces Qualification 2 hr

• Qualification strategy

• Separate effects tests

• Component performance tests

• Integral system effects tests

. Plant data

. Code to code qualification Code Structure 2 hr

• Modular structure

• Solution strategy

. Code overview 3

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Input / Output / Graphics 4 hr

. TRACG input

- Input organization

- Main, power and time step input

- ' Dip, component, and control system input

- Input checks

. TRACG output

- Printed output

- Graphics file

- Restart and Extract files Log file e GRIT and CDFORAF - Generation of plots Model Set Up and Application 4 hr

. Specifics of setting up and running TRACG Initialization of TRACG

- Transients, LOCA, ATWS and stability

• Interpreting and analyzing TRACG output IIands on work shop 4*Ihr 1

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