Computer Programs

NEA-1044 BWRPLANT/ZERO.

NEA-1044 BWRPLANT/ZERO.

BWRPLANT/ZERO, Dynamic Model for BWR Nuclear Plant

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: BWRPLANT/ZERO.

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2. COMPUTERS

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Program name	Package id	Status	Status date
BWRPLANT/ZERO	NEA-1044/02	Tested	07-DEC-1989

Machines used:

Package ID	Orig. computer	Test computer
NEA-1044/02	DEC VAX 8700	DEC VAX 8810

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3. DESCRIPTION OF PROGRAM OR FUNCTION

A dynamic model of a BWR nuclear power plant including reactor, turbines, moisture separator, reheater, feedwater heaters and control systems. The plant model is one-dimensional except for the nuclear part of the reactor which is based on point kinetics (zero-dimensional).

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4. METHOD OF SOLUTION

The steady-state solution is obtained by integration applying small time steps until the nominal power is reached and the time derivatives have become zero. The dynamic solution is obtained by simple Euler integration.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

The design of the thermal part of the plant is very difficult to change.

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6. TYPICAL RUNNING TIME

Steady-state solution 20 sec. Dynamic case 100 sec. for 20 sec. real time.

NEA-1044/02

NEA-DB ran the test cases included in this package on a DEC VAX 8810 computer. The steady state problem executed in 12 seconds; each of the dynamic problems executed in less than 107 seconds.

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7. UNUSUAL FEATURES OF THE PROGRAM:

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8. RELATED AND AUXILIARY PROGRAMS

Input to the thermal part is based on output from the program TURBPLANT.

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9. STATUS

Package ID	Status date	Status
NEA-1044/02	07-DEC-1989	Tested at NEADB

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10. REFERENCES:

NEA-1044/02, included references:

- Erik Nonboel:
  Development of a Dynamic Model of a BWR Nuclear Power Plant
  Part 1: The Steady State Model
  Risoe Report No. 335  (December 1975)
- Erik Nonboel:
  Development of a Dynamic Model of a BWR Nuclear Power Plant
  Part 2: The Dynamic Model
  Risoe Report No. 336  (December 1975)

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11. MACHINE REQUIREMENTS: 100K high speed memory.

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
NEA-1044/02	FORTRAN-77

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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED: VAX/VMS.

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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:

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15. NAME AND ESTABLISHMENT OF AUTHORS

         Erik Nonbol
     Dept. of Energy Technology
     Riso National Laboratory
     DK-4000 Roskilde, Denmark

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16. MATERIAL AVAILABLE

NEA-1044/02

File name	File description	Records
NEA1044_02.001	Information file	89
NEA1044_02.002	FORTRAN source	5255
NEA1044_02.003	Sample input for steady state calculation	45
NEA1044_02.004	Sample input for dynamic simulation (case 1)	49
NEA1044_02.005	Sample input for dynamic simulation (case 2)	49
NEA1044_02.006	Sample output for steady state calculation	278
NEA1044_02.007	Sample output for dynamic simulatio(case 1)	3548
NEA1044_02.008	Sample output for dynamic simulatio(case 2)	2868
NEA1044_02.009	Command procedure to execute the program	7

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17. CATEGORIES

H. Heat Transfer and Fluid Flow

Keywords: BWR reactors, heat exchangers, kinetics, nuclear power plants, one-dimensional, reactor dynamics, turbines.