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About RELAP5-3D


International RELAP5
Users Group

RELAP5 Users Seminar 

Code Manuals

Version Releases


User Problems

RELAP5-3D Released Versions

The current released version of RELAP5–3D is version 4.2.1. To obtain the current RELAP5-3D code versions, contact

Mr. Gary Smith
Technology Deployment Department at the Idaho National Laboratory
PO Box 1625
Idaho Falls, ID 83415
Phone: (208) 526-3780

The following is a history of major released code versions.

For a brief description of improvements and new features in earlier versions, click on the links below.

Major IRUG Version Releases

Version Identification

Letter ID


RELAP5-3D Version 4.2.1 N/A

June 30, 2014

RELAP5-3D Version 4.1.3 N/A

October 1, 2013

RELAP5-3D Version 4.0.3 N/A

July 12, 2012

RELAP5-3D/Ver: 3.0.0 Beta N/A

November 29, 2010

RELAP5-3D/Ver:2.4 N/A

October 05, 2006

RELAP5-3D/Ver:2.2 N/A

October 30, 2003

RELAP5-3D/Ver:2.0.3 N/A

August 21, 2002

RELAP5-3D/Ver:1.3.5 N/A

March 14, 2001

RELAP5-3D/Ver:1.2.2 CK00

June 26, 2000

RELAP5-3D/Ver:1.2.0 CI00

May 05, 2000

RELAP5-3D/Ver:1.1.72 CF02

October 28, 1999

RELAP5-3D/Ver:1.1.7 CF00

August 4, 1999

RELAP5-3D/Ver:1.1.0 BT00

November 23, 1998

RELAP5-3D/Ver:1.0.08 BF08

September 24, 1998

RELAP5-3D/Ver:1.0.05 BF05

September 19, 1997

RELAP5-3D/Ver:1.0.0 BF00

July 6, 1997

Questions or problems regarding this web site should be directed to Dr. James R. Wolf.