The RETRAN-02 computer
program was developed to perform licensing and best-estimate
transient thermal-hydraulic analyses of light water reactors. It is
maintained under a Quality Assurance program in
compliance with 10CFR50 Appendix B. The RETRAN-02 code
was developed for the United States Electric Power Industry under the sponsorship of EPRI.
Zachry operates the RETRAN User Group (RUG)
for member organizations and performs RETRAN-02 software
development and maintenance for them.
RETRAN-02 is a versatile and reliable computer program for use in
best-estimate transient thermal-hydraulic analysis of light water
reactor systems. It is based on a one-dimensional homogeneous
equilibrium mixture model with an optional phasic slip formulation
based on either a drift flux model or a phasic velocity difference
differential equation. RETRAN-02 contains both point reactor and
one-dimensional kinetics models and component models for reactor control
systems, pressurizers, and separators. It also has flexible heat
conduction and heat transfer models that allow modeling of both reactor
cores and steam generators. A unique capability of RETRAN-02 is its
steady-state initialize feature, which aids users in establishing the
desired initial state for transient simulations.
RETRAN-02 provides analysis capabilities for (1) BWR and PWR
transients, (2) small break loss of coolant accidents, and (3)
anticipated transients without scram. It is routinely
used to support plant licensing, operational support, and training issues.
RETRAN-02 has been approved by the United States Nuclear Regulatory
Commission for use in performing licensing calculations and is used by numerous
electric utilities and national laboratories. RETRAN-02 MOD005.2 is
the current version, and is operational on PCs and UNIX-based workstations.
A list of trouble reports and their status can be obtained
from the RETRAN Trouble Report
Continued development of the RETRAN code source has lead to the
RETRAN-3D code, which has
improved capabilities and range of applications.
RETRAN-02 use licenses can be purchased directly from Zachry. For more information on the RETRAN-02
computer program and how it can be obtained, please contact Mike
Zachry Nuclear Engineering, Inc.
410 Memorial Dr., Suite 205
Idaho Falls, ID 83402
Telephone: (208) 529-1700
FAX: (208) 529-1723