last modified: 15-JUL-1993 | catalog | categories | new | search |

NEA-1328 TERFOC-N.

TERFOC-N, Radiation Doses in Food Chain from Atmospheric Release

top ]
1. NAME OR DESIGNATION OF PROGRAM:  TERFOC-N (Terrestrial Food-Chain
Model for Normal Operations).
top ]
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
TERFOC-N NEA-1328/01 Tested 15-JUL-1993

Machines used:

Package ID Orig. computer Test computer
NEA-1328/01 FACOM M-380 DEC VAX 6000
top ]
3. DESCRIPTION OF PROGRAM OR FUNCTION

TERFOC-N calculates radiation doses to the public due to atmospheric releases of radionuclides from nuclear facilities in normal operations. This code estimates the highest individual dose and the collective dose from four typical exposure pathways: internal doses from ingestion and inhalation, external doses from cloudshine and groundshine.
top ]
4. METHOD OF SOLUTION

A foodchain model, which is originally referred to in U.S. NRC Regulatory Guide 1.l09, has been improved to apply not only to LWRs but also to other nuclear facilities. The transfer  of 3H and 14C in the foodchain is estimated by the revised specific  activity method. The model based on the Boone's model is used in the assessment of radionuclides except 3H and 14C. Internal doses due to ingestion and inhalation can be estimated by multiplying the annual intake of radionuclides by dose conversion factors. External  doses due to cloudshine and groundshine are computed on the basis of the submersion model and the finite plane model, respectively.
top ]
5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

In the preparation of input data, a user of the code may arbitrarily select the kinds of crops and animal products to be involved. Data for edible crops should be given on wet-weight bases, but data for feed crops may be  given on either dry - or wet - bases. Data for crops must be in the  order of feed crops and edible crops.
top ]
6. TYPICAL RUNNING TIME

A few seconds of CPU time are required to run a sample case of TERFOC-N on the FACOM M-780 computer.
top ]
7. UNUSUAL FEATURES OF THE PROGRAM:
top ]
8. RELATED AND AUXILIARY PROGRAMS:
top ]
9. STATUS
Package ID Status date Status
NEA-1328/01 15-JUL-1993 Screened
top ]
10. REFERENCES:
NEA-1328/01, included references:
- O. Togawa:
  A Computer Code TERFOC-N to Calculate Doses to the Public due to
  Atmospheric Releases of Radionuclides in Normal Operations of
  Nuclear Facilities
  JAERI-memo 02-426 (January 1991).
- O. Togawa:
  A Computer Code TERFOC-N to Calculate Doses to the Public due to
  Atmospheric Releases of Radionuclides in Normal Operations of
  Nuclear Facilities
  JAERI-M 89-145 (September 1989), (in Japanese).
- O. Togawa:
  Technical Report - Computer Code TERFOC-N to Calculate Doses to
  Public Using Terrestrial Foodchain Models Improved and Extented
  for Long-Lived Nuclides
  Reprint Journal of Nuclear and Technology, 27 (4), pp.360-374
  (April 1990).
top ]
11. MACHINE REQUIREMENTS

TERFOC-N is operable on the FACOM M-380 or the FACOM M-780 computers.
top ]
12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NEA-1328/01 FORTRAN-77
top ]
13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:  A FORTRAN 77 compiler is usually required.
top ]
14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:
top ]
15. NAME AND ESTABLISHMENT OF AUTHORS

  Japan Atomic Energy Research Institute
  Tokai-mura
  Naka-gun
  Ibaraki-ken
  319-11 JAPAN
top ]
16. MATERIAL AVAILABLE
NEA-1328/01
File name File description Records
NEA1328_01.001 Information file 44
NEA1328_01.002 TERFOC-N source (FORTRAN-77) 1762
NEA1328_01.003 DTLIST subroutine source (FORTRAN-77) 48
NEA1328_01.004 Sample problem input data(FORTRAN-77) 364
NEA1328_01.005 Data library TFCAGR 592
NEA1328_01.006 Data library REPRO 1773
NEA1328_01.007 Data library TFCDF 316
NEA1328_01.008 Data library TFCPOP 75
NEA1328_01.009 JCL to compile and go 15
NEA1328_01.010 Sample problem printed output 2420
top ]
17. CATEGORIES
  • G. Radiological Safety, Hazard and Accident Analysis

Keywords: atmospheric precipitations, doses, ingestion, inhalation, radiation doses.