NESC1081 PWR-GALE.

1. NAME OR DESIGNATION OF PROGRAM:  PWR-GALE.

3. DESCRIPTION OF PROGRAM OR FUNCTION

The PWR-GALE (Boiling Water Reactor Gaseous and Liquid Effluents) Code is a computerized mathematical model for calculating the release of radioactive material in gaseous and liquid effluents from pressurized water reactors (PWRs). The calculations are based on data generated from operating reactors, field tests, laboratory tests, and plant-specific design considerations incorporated to reduce the quantity of radioactive materials that may be released to the environment.

4. METHOD OF SOLUTION

GALE calculates expected releases based on 1) standardized coolant activities derived from ANS Standards 18.1 Working Group recommendations, 2) release and transport mechanisms that result in the appearance of radioactive material in liquid and  gaseous waste streams, 3) plant-specific design features used to reduce the quantities of radioactive materials ultimately released to the environs, and 4) information received on the operation of nuclear power plants.

5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

The liquid release portion of GALE uses subroutines taken from the ORIGEN (CCC-217) to  calculate radionuclide buildup and decay during collection, processing, and storage of liquid radwaste. Memory requirements for  this part of the program are determined by the large nuclear data base accessed by these subroutines.

6. TYPICAL RUNNING TIME:

The test cases included in this package were executed at NEA-DB on a CDC CYBER 830 computer. The following CPU times were  required: 0.4 seconds (PGALEGS); 26.5 seconds (PGALELQ).

7. UNUSUAL FEATURES OF THE PROGRAM:

8. RELATED AND AUXILIARY PROGRAMS

BWR-GALE was developed from GALE (CCC-0335) as a more up-to-date tool based on more recent information published in NUREG-017, Rev. 1.

10. REFERENCES:

- T. Chandrasekaran, J.Y. Lee and C.A. Willis:
  Calculation of Releases of Radioactive Materials in Gaseous and
  Liquid Effluents from Pressurized Water Reactors (PWR-GALE Code)
  NUREG-0017  (April 1985)
- Changes/Errata for PWR GALE (NUREG-0017/Rev.1)
- L. Eyberger:
  PWR-GALE Tape Description and Implementation Information.
  NESC Note 87-79  (June 30, 1987)

11. MACHINE REQUIREMENTS:

To run the test cases of this package on a CDC CYBER 830 computer, main storage requirements are 30,100 (octal) words CM  for PGALEGS and 162,400 (octal) words CM for PGALELQ. In addition, 27,650 (octal) words of ECS are used.

13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:

NOS2.5.1 (CDC CYBER 830).

14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:

15. NAME AND ESTABLISHMENT OF AUTHORS

     T. Chandrasekaran, J.Y. Lee, C.A. Willis
     Division of Systems Integration
     Office of Nuclear Reactor Regulation
     U.S. Nuclear Regulatory Commission
     Washington, D.C. 20566, U. S. A.

File name	File description	Records
NESC1081_01.001	Information file	68
NESC1081_01.002	JCL and control information	27
NESC1081_01.003	PGALEGS FORTRAN source	628
NESC1081_01.004	PGALEGS sample problem input	43
NESC1081_01.005	PGALELQ FORTRAN source	1921
NESC1081_01.006	PGALELQ sample problem input	45
NESC1081_01.007	Nuclear data library 1	1265
NESC1081_01.008	Nuclear data library 2	495
NESC1081_01.009	Nuclear data library 3	2305
NESC1081_01.010	PGALEGS sample problem output	113
NESC1081_01.011	PGALELQ sample problem output	994