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General GALE Usage


1. What is GALE and what is it used for?
GALE is the acronym for the Gaseous And Liquid Effluent code, which is a computerized mathematical model for estimating the releases of radioactive material in gaseous and liquid effluents (i.e., the gaseous and liquid source terms) from boiling-water (BWRs) and pressurized-water reactors (PWRs). The U.S. Nuclear Regulatory Commission uses the GALE code to determine conformance with the requirements of Appendix I to 10 Code of Federal Regulations (CFR) Part 50.


2. Who typically uses the GALE code?
The GALE code is one of the tools used by the NRC Offices of Nuclear Reactor Regulation (NRR) and New Reactors (NRO) to perform independent assessments of licensee applications and license amendments for existing plants (modifications to plant design or technical specification) pertaining to determine conformance with the requirements of Appendix I to 10 Code of Federal Regulations (CFR) Part 50.


3. Is GALE only used domestically in the US?
No, GALE is used by many international government agencies and is an important computer code in the US NRC’s Radiation Protection Computer Code Analysis and Maintenance Program (RAMP).


4. Is there a forum that users can go to discuss questions related to the models used in the GALE coe?
Yes, the GALE Forum is available to all visitors of the RAMP website (via “read-only” access). However, only RAMP members can post to the forum. To access the GALE forum select the “GALE Support” navigation link on the U.S NRC RAMP website, which provides access to the “GALE Forum”. GALE Forum topics include:

  • Code Error (Bug) Reporting
  • Model Questions
  • General GALE Usage Questions



5. Is there training information available for GALE and if so how can I get more information about the training available?
Yes, RAMP members can get training information (including presentations) by selecting the “GALE Training & Presentation” link on the U.S NRC RAMP website.


6. Is there a user manual for GALE and where can I find technical documentation for the code?
Yes, there is a GALE User’s Guide available on the “GALE User’s Guide” webpage. Additionally, GALE technical documents including the NUREGs are available under the “GALE Documentation” navigation link on the U.S NRC RAMP website.