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NEA-0353 ICON.

ICON, Reactor Operation Fission Products Inventory Calculation

NAME OR DESIGNATION OF PROGRAM, COMPUTER, NATURE OF PHYSICAL PROBLEM SOLVED, METHOD OF SOLUTION, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, TYPICAL RUNNING TIME, FEATURES, AUXILIARIES, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED, OTHER RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHOR, MATERIAL, CATEGORIES
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1. NAME OR DESIGNATION OF PROGRAM:  ICON.
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2. COMPUTERS
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Program name Package id Status Status date
ICON NEA-0353/01 Tested 01-MAY-1972

Machines used:

Package ID Orig. computer Test computer
NEA-0353/01 IBM 360 series IBM 360 series
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3. NATURE OF PHYSICAL PROBLEM SOLVED

Determines complete fission product inventory for a reactor after a particular history of operating conditions taking into account the structure of the individual decay chains and also the effects of neutron capture.
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4. METHOD OF SOLUTION

Each chain is fitted to a generalised decay scheme and the simultaneous differential equations, whose coefficient matrix is lower triangular, are solved.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

In its present form up to 100 reactor cycles may be examined but this may be readily increased.
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6. TYPICAL RUNNING TIME

Less than 0.5 seconds/chain/mode of fission/ reactor cycle.
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7. UNUSUAL FEATURES: UNUSUAL FEATURES OF THE PROGRAM
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8. RELATED OR AUXILIARY PROGRAMS: RELATED AND AUXILIARY PROGRAMS
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9. STATUS
Package ID Status date Status
NEA-0353/01 01-MAY-1972 Tested at NEADB
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10. REFERENCES: - AERE R 6242.
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11. MACHINE REQUIREMENTS

Nuclear data is stored on a direct access device such as 2314 or 3330 disk.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NEA-0353/01 FORTRAN-IV
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13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED:  Standard
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS
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15. NAME AND ESTABLISHMENT OF AUTHOR:        R. L. Faircloth, AERE, Harwell, U.K.
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16. MATERIAL AVAILABLE
NEA-0353/01
File name File description Records
NEA0353_01.001 INFORMATION 2
NEA0353_01.002 SOURCE PROG.+DD CARDS+INPUT DATA 478
NEA0353_01.003 PRINTED OUTPUT 316
NEA0353_01.004 DATA LIBRARY (1) 779
NEA0353_01.005 DATA LIBRARY (2) 779
NEA0353_01.006 DATA LIBRARY (3) 779
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17. CATEGORIES
  • D. Depletion, Fuel Management, Cost Analysis, and Power Plant Economics

Keywords: capture, decay, fission products.