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NEA-1671 DUCT-III.

DUCT-III, Design Code for Duct-Streaming Radiations

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1. NAME OR DESIGNATION OF PROGRAM: DUCT-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
DUCT-III NEA-1671/01 Tested 01-JUL-2003

Machines used:

Package ID Orig. computer Test computer
NEA-1671/01 UNIX W.S.,IBM PC PC Pentium III,PC Windows,DEC ALPHA W.S.,Linux-based PC
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3. DESCRIPTION OF PROGRAM OR FUNCTION

Penetrations such as an entrance, supply / exhaust ducts and pipes go through walls in nuclear facilities. They are generally made as bent structures in order to decrease leakage radiation (streaming) through them. However it is very difficult to evaluate the streaming radiation because the structures are complex. The DUCT code calculates duct-streaming radiation of neutrons and photons with a semi-empirical formula, was developed in 1988 for the purpose of penetration designs. This code can treat the main types of penetrations i.e., cylindrical duct, rectangular duct, annulus and slit. This code is applicable to designs of penetrations in nuclear power plants, fusion reactor facilities, accelerator facilities, and so on, because albedo data for gamma-rays up to 10 MeV and neutrons up to 3 GeV are implemented in it. Since then, this code has been updated by simplification of input data, addition of functions to deal with bent ducts, and so on, and the DUCT-II code was developed. In 1998 -2001, the DUCT-III code was developed by adding the following functions to the DUCT-II code to allow application to high energy accelerator facilities, further simplification of input data, and so on.
(1) Addition of high-energy neutron albedo data (maximum energy 3GeV)
(2) Addition of a function to calculate wall scattered radiation
(3) Addition of typical source spectra
(4) Addition of a point kernel program PKN-H
(5) Optional setup of source position
(6) Development of a Visual Basic version
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4. METHODS

DUCT-III is a simple design code to calculate duct-streaming radiation in nuclear facilities by using a semi-empirical formula based on an albedo analytical method.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM
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6. TYPICAL RUNNING TIME
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7. UNUSUAL FEATURES
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8. RELATED OR AUXILIARY PROGRAMS
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9. STATUS
Package ID Status date Status
NEA-1671/01 01-JUL-2003 Tested at NEADB
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10. REFERENCES

- K. Shin, Semiempirical Formula for Energy-Space Distributions of Streamed Neutrons and Gamma-Rays in Cylindrical Duct, Journal of Nuclear Science and Technology, 25 [1], pp. 8 - 18 (1988).
- K. Shin, An Approximate Formula for Neutron and Gamma-Ray Streaming through Ducts and Slits, 7th International Conference on Radiation Shielding, Bournemouth, UK, Sep. 12 - 16 (1988).
- K. Shin and A. Itoh, A Simple Calculation Method for 14 MeV Gap Streaming, International Symposium on Fusion Nuclear Technology, Tokyo, April 11-14 (1988).
- K. Hayashi et al., DUCT-II and SHINE-II: Simple Design Code for Duct-streaming and Skyshine, JAERI-M 91-013 (1991).
NEA-1671/01, included references:
- R. Tayama, H. Nakano, H. Handa, K. Hayashi, H. Hirayama,
K. Shin, F. Masukawa, H. Nakashima, and N. Sasamoto:
DUCT-III, A Simple Design Code for Duct-Streaming Radiations
KEK Internal 2001-8, November 2001
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11. HARDWARE REQUIREMENTS
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NEA-1671/01 FORTRAN, VISUAL BASIC
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13. SOFTWARE REQUIREMENTS

There are two versions of this code, the UNIX version runs on workstations and the Visual Basic version runs on Microsoft Excel 97*. The code package contains the Fortran source (or PC executable), data libraries, sample input and output data.
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS
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15. NAME AND ESTABLISHMENT OF AUTHORS

Ryuichi TAYAMA, Hideo NAKANO, Hiroyuki HANDA, Katsumi HAYASHI
Hitachi Engineering Co., Ltd.
3-2-1 Saiwai-cho, Hitachi
IBARAKI 317-0073, Japan

Hideo HIRAYAMA
High Energy Accelerator Research Organization, Radiation Science Center
1-1 Oho, Tsukuba-shi, Ibaraki, 305-0801 Japan

Kazuo SHIN
Dept. of Nuclear Engineering
Kyoto University
Yoshida
Sakyo-ku
Kyoto 606-8501, Japan

Fumihiro MASUKAWA, Hiroshi NAKASHIMA, Nobuo SASAMOTO
JAERI
Tokai-mura, Naka-gun
IBARAKI 319-1195, Japan
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16. MATERIAL AVAILABLE
NEA-1671/01
duct-iii_en.pdf Documentation in electronic form
duct2-abs.doc Abstract
dct34vb\ Visual Basic executables, data libraries, sample input & output files
dct34\ Unix files: source codes, jcl, data libraries, sample input & output files
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17. CATEGORIES
  • J. Gamma Heating and Shield Design

Keywords: ducts, gamma ray, neutron source, radiation, streaming.