NEA-0610 WEERIE.

1. NAME OR DESIGNATION OF PROGRAM:  WEERIE.

3. DESCRIPTION OF PROBLEM OR FUNCTION

WEERIE is a reactor safety analysis program which allows a comprehensive analysis of the consequences of radioactive releases discharged from nuclear installations to the atmosphere.

4. METHOD OF SOLUTION

The solution of the problem may be conveniently divided into five stages:

- In the first stage the program generates a complete radioactive  fission product inventory (72Zn - 161Tb) for the exact reactor  type and irradiation conditions of interest. This is a version of    the FISP program.

- In the second stage the release of the radioactive inventory into   the coolant circuit is calculated. The incident is divided into  a series of time steps so as to monitor the release rates as a    function of time.

- In the third stage the behaviour of the effluent in the  atmosphere is calculated. The activity is discharged from an  effective stack height and after allowances for building  entrainment and meteorological dispersion, the time integrated  activities are obtained at any point in space. Ground deposition,  reflection from inversion layers and the effects of the time    length of the release are also represented.

- In the fourth stage, the dosimetry of the discharge is  calculated. Inhaled doses are evaluated in ten adult human body  organs using the tabulated values of rems/Ci inhaled for all the  FISP fission product nuclides. The doses include contributions  from all radioactive daughters in the decay chain following the    parent nuclide.

- In the final stage a multi-energy group cloud gamma exposure is    found by integrating over the volume of the plume.

5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM:

6. TYPICAL RUNNING TIME

Typically the doses and cloud-gamma exposures may be evaluated at the rate of 20-500 (mean about 200) receptor locations per minute on the IBM 370/165, depending on the cloud- gamma geometry.

7. UNUSUAL FEATURES OF THE PROGRAM:

8. RELATED AND AUXILIARY PROGRAMS

FISP is incorporated to generate the fission product inventory. POPDOS estimates collective doses in  England and Wales given an atmospheric release of radioactivity and  inputs data produced by WEERIE. For a description of the suite of computer programs which include WEERIE which have been written at BNL, CEGB to develop the safety and siting philosophy of nuclear reactors, see R. H. Clarke, "Physical Effects of Nuclear Reactors in Working and Public Environments", CEGB, Berkeley Nuclear Laboratories (Ph.D thesis), 1973.

10. REFERENCES:

-  R. H. Clarke
    A User's Guide to the WEERIE Program.  RD/B/N2407 (April, 1973)
- R.H. Clarke:
The WEERIE Program for Assessing the Radiological Consequences of Airborne
Effluents from Nuclear Installations
Reprint from Health Physics Pergamon-Press 1973. Vol.25 (Sept.)
pp. 267-280.

11. MACHINE REQUIREMENTS:

13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:

14. OTHER PROGRAMMING OR OPERARTING INFORMATION OR RESTRICTIONS:

15. NAME AND ESTABLISHMENT OF AUTHOR

          R. H. Clarke
          Research Department
          Berkeley Nuclear Laboratories (CEGB)
          Gloucestershire, United Kingdom.

File name	File description	Records
NEA0610_01.001	INFORMATION FILE	16
NEA0610_01.002	JCL	47
NEA0610_01.003	SOURCE	2763
NEA0610_01.004	RISLEY FORTRAN ROUTINES	1780
NEA0610_01.005	RISLEY ASSEMBLER ROUTINES	614
NEA0610_01.006	INPUT SAMPLE PROBLEM 1	4072
NEA0610_01.007	OUTPUT OF SAMPLE PROBLEM 1	4292
NEA0610_01.008	FISSION PRODUCT LIBRARY	24
NEA0610_01.009	PLUME DOSIMETRY LIBRARY	39
NEA0610_01.010	INPUT SAMPLE PROBLEM 2	20
NEA0610_01.011	OUTPUT OF SAMPLE PROBLEM 2	698