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NEA-1767 SMAFS.

SMAFS, Steady-state analysis Model for Advanced Fuelcycle Schemes

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1. NAME OR DESIGNATION OF PROGRAM:  SMAFS, Steady-state analysis Model for Advanced Fuelcycle Schemes.
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2. COMPUTERS
To submit a request, click below on the link of the version you wish to order. Only liaison officers are authorised to submit online requests. Rules for requesters are available here.
Program name Package id Status Status date
SMAFS NEA-1767/01 Tested 12-MAY-2006

Machines used:

Package ID Orig. computer Test computer
NEA-1767/01 PC Windows PC Windows
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3. DESCRIPTION OF PROGRAM OR FUNCTION

The model was developed as a part of the study, "Advanced Fuel Cycles and Waste Management", which was performed during 2003-2005 by an ad-hoc expert group under the Nuclear Development Committee in the OECD/NEA.
   
The model was designed for an efficient conduct of nuclear fuel cycle scheme cost analyses. It is simple, transparent and offers users the capability to track down the cost analysis results. All the fuel cycle schemes considered in the model are represented in a graphic format and all values related to a fuel cycle step are shown in the graphic interface, i.e., there are no hidden values embedded in the calculations. All data on the fuel cycle schemes considered in the study including mass flows, waste generation, cost data, and other data such as activities, decay heat and neutron sources of spent fuel and high-level waste along time are included in the model and can be displayed. The user can modify easily the values of mass flows and/or cost parameters and see the corresponding changes in the results.
   
The model calculates: front-end fuel cycle mass flows such as requirements of enrichment and conversion services and natural uranium; mass of waste based on the waste generation parameters and the mass flow; and all costs. It performs Monte Carlo simulations with changing the values of all unit costs within their respective ranges (from lower to upper bounds).
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4. METHODS

In Monte Carlo simulation, it is assumed that all unit costs follow a triangular probability distribution function, i.e., the probability that the unit cost has a value increases linearly from its lower bound to the nominal value and then decreases linearly to its upper bound.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

The limit for the Monte Carlo iterations is the one of an Excel worksheet, i.e. 65,536.
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6. TYPICAL RUNNING TIME

Calculations are done immediately as usual in Microsoft Excel applications. Sensitivity analyses take some time, up to a few minutes, for copying and pasting values. Monte Carlo simulation takes time depending on the number of iterations and the speed of the PC. For 10,000 iterations, it may take more than 30 minutes, depending on the computer.
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7. UNUSUAL FEATURES

This model does sensitivity analyses and Monte Carlo simulations using macros in Microsoft Excel.
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8. RELATED OR AUXILIARY PROGRAMS:  none
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9. STATUS
Package ID Status date Status
NEA-1767/01 12-MAY-2006 Tested at NEADB
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10. REFERENCES

OECD/NEA (2006), Advanced Fuel Cycles and Waste Management, OECD, Paris
NEA-1767/01, included references:
- Kwang-Seok LEE:
User's Manual for SMAFS - Steady-state analysis Model for Advanced Fuelcycle
Schemes (NEA-1767/01, May 2006)
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11. HARDWARE REQUIREMENTS:  PC Windows.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NEA-1767/01 Microsoft Excel, VISUAL BASIC
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13. SOFTWARE REQUIREMENTS:  Microsoft Excel 2002 or later, Acrobat Reader.
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS
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15. NAME AND ESTABLISHMENT OF AUTHORS

Kwang-Seok LEE
Nuclear Development Division
OECD/NEA
Le Seine St Germain
12, boulevard des Iles
92130 Issy-les-Moulineaux - FRANCE

(Originally from Policy Research Division, Korea Atomic Energy Research Institute, Korea)
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16. MATERIAL AVAILABLE
NEA-1767/01
smafs.INF                   information file
NEA-1767-01 UserManual.pdf   program manual - pdf version
SMAFS.xls                   SMAFS program in Excel
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17. CATEGORIES
  • D. Depletion, Fuel Management, Cost Analysis, and Power Plant Economics

Keywords: cost, economics, fuel cycle, mass flows, power plants, waste generation.