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CCC-0289 SKYSHINE-III.SKYIII.

SKYSHINE, Dose Rate Outside Concrete Steel Building from 6 MeV Gamma by Monte-Carlo

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1. NAME OR DESIGNATION OF PROGRAM:  SKYSHINE-III. SKYIII-PC (PC version of SKYSHINE-III).
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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
SKYSHINE-2 CCC-0289/02 Tested 11-JUN-1982
SKYSHINE-3 CCC-0289/04 Tested 10-APR-1990
SKYIII-PC CCC-0289/06 Tested 10-OCT-1997

Machines used:

Package ID Orig. computer Test computer
CCC-0289/02 IBM 3033 IBM 3033
CCC-0289/04 DEC VAX 8600 DEC VAX 8810
CCC-0289/06 IBM PC PC Pentium 166
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3. DESCRIPTION OF PROGRAM OR FUNCTION

SKYSHINE was designed to aid the evaluation of the effects of structure geometry on the gamma ray dose rate at given detector positions outside of a building housing N16 gamma ray sources. The program considers a rectangular structure enclosed by four walls and a roof. Each of the walls and the roof of the building may be subdivided into up to nine different areas, representing different materials or different thicknesses of  the same material for those positions of the wall or roof. Basic sets of iron and concrete slab transmission and reflection data for  6.2 MeV gamma rays are part of the SKYSHINE block data. These data,  as well as parametric air transport data for line-beam sources at a
number of energies between 0.6 MeV and 6.2 MeV and ranges to 3750 feet, are used to estimate the various components of the gamma ray dose rate at positions outside of the building. The gamma ray source is assumed to be a 6.2 MeV point-isotropic source.
SKYSHINE-III provides an increase in versatility over the original SKYSHINE code in that it addresses both neutron and gamma ray point  sources. In addition, the emitted radiation may be characterized by  an energy emission spectrum defined by the user. A new SKYSHINE data base is also included.
SKYIII-PC is a PC version of SKYSHINE-III. Only minor modifications  were made in converting for PC use. The June 1997 replacement of the PC version corrects the previously existing index problem leading to erroneous results for the "wall-scattered/air-scattered" contribution if a roof is modeled. Associated with these changes is  the precaution that the detector height should always be lower than  the base of the roof. Erroneous results for the roof portion of the  "wall-scattered/air-attenuated" contribution will occur if a roof is modeled and the detector is not below the roof plane.
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4. METHOD OF SOLUTION

The Monte Carlo method is used in SKYSHINE-III  to integrate the emitted radiation over the solid angles subtended by each wall, the floor, and the roof of the structure. The Monte Carlo method is also used in integrating the products of the shield, transmitted and reflected energy, and angle distributions times the  air-scattered dose rates over exit energies and angles.
The PC version SKIIIPC has been modified to employ the MIRAN random number generator.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

Restrictions and limitations are discussed in the document. The same restrictions and limitations are also applicable to the PC Version, SKYIII-PC.
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6. TYPICAL RUNNING TIME

The sample problem test case required about 1 minute of wall clock time on the VAX 8600. Execution of SKIII-PC for the 4 test cases required approximately 7 minutes on the Compaq  Pentium 60.
CCC-0289/04
NEA-DB ran the test case included in this package on a
VAX 8810 computer in 27 seconds of CPU time.

CCC-0289/06
The NEA Data Bank installed and ran the program on a
PC/166MHz with 64 MB of RAM. The following execution times were found for the sample cases included in the package:
Example with SKYNEUTS      10 seconds
             SKYANS66       6 seconds
             SKYCS137.DAT  20 seconds
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7. UNUSUAL FEATURES OF THE PROGRAM:
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8. RELATED AND AUXILIARY PROGRAMS:
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9. STATUS
Package ID Status date Status
CCC-0289/02 11-JUN-1982 Tested at NEADB
CCC-0289/04 10-APR-1990 Tested at NEADB
CCC-0289/06 10-OCT-1997 Tested at NEADB
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10. REFERENCES

- J.H. Price, D.G. Collins, and M.B. Wells:
  Utilization Instructions for SKYSHINE
  RRA-N7608. (August 1976).
CCC-0289/02, included references:
- C.M. Lampley:
  The SKYSHINE-2 Procedure - Calculation of the Effects of Structure
  Design on Neutron, Primary Gamma-Ray Dose Rates in Air.
  NUREG/CR-0781 (RRA-T7901) (May 1979).
- NEA Data Bank:
  Note to CDC Users (30 January, 1990).
CCC-0289/04, included references:
- C.M. Lampley, M.C. Andrew and M.B. Wells:
  The SKYSHINE-III Procedure: Calculation of the Effects of a
  Structure Design on Neutron, Primary Gamma-Ray and Secondary
  Gamma-Ray Dose Rates in Air.
  RRA-T8209A  (June 1982, revised September 1988)
CCC-0289/06, included references:
- C.M. Lampley, M.C. Andrew and M.B. Wells:
  The SKYSHINE-III Procedure: Calculation of the Effects of a
  Structure Design on Neutron, Primary Gamma-Ray and Secondary
  Gamma-Ray Dose Rates in Air.
  RRA-T8209A (June 1982, revised September 1988).
- Loading Intructions
  Radiation Research Associates, Inc. (September 1988).
- J.K. Warkentin:
  SKYIIIPC Notes, Informal Notes (January 1997)
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11. MACHINE REQUIREMENTS

SKYSHINE-III was developed on a small VAX and tested at RSIC on a VAX 8600. The SKYIII-PC runs on IBM compatible personal computers with a coprocessor.
CCC-0289/06
The tests were performed at the NEA DATA Bank on a DELL OptiPlex GXi PC with a Pentium 166MHz processor and 64 MB of RAM. The installation requires about 7 MB of hard disk space.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
CCC-0289/02 FORTRAN-IV
CCC-0289/04 FORTRAN-77
CCC-0289/06 FORTRAN-77
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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED

The VAX VMS FORTRAN 77 compiler, version 4.6, was used at RSICC. SKYIII-PC was compiled with the IBM FORTRAN/2 Compiler Version 4.00 and can be run in a DOS window of Windows95.
CCC-0289/04
VMS V5.1-2 (VAX 8810) with compiler VAX FORTRAN V5.0-1.

CCC-0289/06
The software was at the NEA Data Bank installed under Windows NT 4.0. The source code was compiled with the Lahey Fortran  90 compiler Release 3.50a.
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:
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15. NAME AND ESTABLISHMENT OF AUTHORS

Contributed by: Radiation Safety Information Computational Center
                Oak Ridge National Laboratory
                Oak Ridge, Tennessee, U. S. A.
Developed by:
SKYSHINE-III:   Radiation Research Associates,
                Fort Worth, Texas, U. S. A.
SKYIII-PC:      J.K. Warkentin, Forth Worth, Texas, USA
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16. MATERIAL AVAILABLE
CCC-0289/02
File name File description Records
CCC0289_02.003 SKYSHINE-2 INFORMATION FILE 65
CCC0289_02.004 SKYSHINE-2, SOURCE CARD IMAGES (FORTRAN-4) 1061
CCC0289_02.005 SKYSHINE-2, INPUT FOR TEST CASE 55
CCC0289_02.006 CURVE FIT COEFF. (PRIMARY GAMMA RAYS) 122
CCC0289_02.007 CURVE FIT COEFF. (LINE BEAM NEUTRONS) 192
CCC0289_02.008 CURVE FIT COEFF. (SECONDARY GAMMA RAYS) 192
CCC0289_02.009 SKYSHINE-2, SAMPLE CASE OUTPUT (PRIM GAMMAS) 814
CCC0289_02.010 SKYSHINE-2, SAMPLE CASE OUTPUT (LINE BEAM N) 814
CCC0289_02.011 SKYSHINE-2, SAMPLE CASE OUTPUT (SEC. GAMMAS) 814
CCC0289_02.012 SKYSHINE-2, JCL TO RUN SAMPLE CASE 60
CCC-0289/04
File name File description Records
CCC0289_04.001 Information file 136
CCC0289_04.002 Sample input data 41
CCC0289_04.003 Air transmission data base 500
CCC0289_04.004 Concrete/steel reflection data base 17160
CCC0289_04.005 Concrete/steel transmission data base 24336
CCC0289_04.006 Converter of air transmission data to binary 46
CCC0289_04.007 Converter of concrete/steel refl. to binary 54
CCC0289_04.008 Converter of concrete/steel trans. to binary 31
CCC0289_04.009 SKYSHINE-III source 4612
CCC0289_04.010 Sample print out 354
CCC0289_04.011 Converter for air transmission data to BCD 47
CCC0289_04.012 Converter for concrete/steel refl. to BCD 52
CCC0289_04.013 Converter for concrete/steel trans. to BCD 32
CCC-0289/06
File name File description Records
CCC0289_06.001 Information file 402
CCC0289_06.002 Fortran source file 4900
CCC0289_06.003 Fortran source file 47
CCC0289_06.004 Executable file 0
CCC0289_06.005 Air transmission data (ASCII file) 500
CCC0289_06.006 Air transmission data (binary file) 0
CCC0289_06.007 Fortran source file 56
CCC0289_06.008 Executable file 0
CCC0289_06.009 Steel/concrete reflection data (ASCII file) 17160
CCC0289_06.010 Steel/concrete reflection data (binary file) 0
CCC0289_06.011 Fortran source file 33
CCC0289_06.012 Executable file 0
CCC0289_06.013 Steel/concrete transmission data (ASCII) 24336
CCC0289_06.014 Steel/concrete transmission data (binary) 0
CCC0289_06.015 Input data for example 1 74
CCC0289_06.016 Input data for example 2 74
CCC0289_06.017 Input data for example 3 38
CCC0289_06.018 Input data for example 4 38
CCC0289_06.019 Lahey error data file 0
CCC0289_06.020 Author's executable file 0
CCC0289_06.021 Author's output file for example 1 655
CCC0289_06.022 Author's output file for example 2 655
CCC0289_06.023 Author's output file for example 3 336
CCC0289_06.024 Author's output file for example 4 328
CCC0289_06.025 NEADB executable file 0
CCC0289_06.026 NEADB output file for example 1 677
CCC0289_06.027 NEADB output file for example 2 677
CCC0289_06.028 NEADB output file for example 3 395
CCC0289_06.029 NEADB output file for example 4 343
CCC0289_06.030 Executable file for test case comparisons 0
CCC0289_06.031 Input data 993
CCC0289_06.032 Input data 86
CCC0289_06.033 Output data 767
CCC0289_06.034 Input data 62
CCC0289_06.035 Output data 521
CCC0289_06.036 DOS file-names 35
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17. CATEGORIES
  • G. Radiological Safety, Hazard and Accident Analysis
  • J. Gamma Heating and Shield Design
  • R. Environmental and Earth Sciences

Keywords: Monte Carlo method, air scattering, concretes, dose rates, gamma radiation, shields.