CCC-0289 SKYSHINE2&3-SKYIIIPC

SKYSHINE2&3-SKYIII-PC, Dose Rate Outside Concrete Steel Building from 6 MeV Gamma by Monte-Carlo

NAME OR DESIGNATION OF PROGRAM, COMPUTER, DESCRIPTION OF PROGRAM OR FUNCTION, METHOD OF SOLUTION, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, TYPICAL RUNNING TIME, UNUSUAL FEATURES OF THE PROGRAM, RELATED AND AUXILIARY PROGRAMS, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED, OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHORS, MATERIAL, CATEGORIES

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1. NAME OR DESIGNATION OF PROGRAM: SKYSHINE2&3-SKYIII-PC

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2. COMPUTERS

To submit a request, click below on the link of the version you wish to order. Rules for end-users are available here.

Program name	Package id	Status	Status date
SKYIII-PC	CCC-0289/06	Tested	10-OCT-1997

Machines used:

Package ID	Orig. computer	Test computer
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-0289/06

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-0289/06	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-0289/06, 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-0289/06	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-0289/06

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-0289/06

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