June 29, 2004
The Honorable John T. Conway
Defense Nuclear Facilities Safety Board
625 Indiana Avenue, NW, Suite 700
Washington, D.C. 20004-2941
Dear Mr. Chairman:
In September 2003, the Department reported interim completion of Commitment 220.127.116.11 in the Department’s Implementation Plan for Software Quality Assurance (SQA) in response to Board Recommendation 2002-1. This commitment required the Department to issue code-specific guidance reports on the use of safety analysis toolbox codes identifying applicable regimes in accident analysis, default inputs, and special conditions for use. The September 2003 correspondence also indicated that the guidance reports may be updated based on the results of the gap analysis performed for Commitment 18.104.22.168.
The Department completed additional code developer and peer reviews to further improve their accuracy and issued the final gap analysis reports, which I provided to you on May 12, 2004. The code-specific guidance reports for the MACCS2, ALOHA, EPICODE, MELCOR, GENII, and CFAST toolbox codes have now been updated to reflect the final gap analysis conducted for each toolbox code and are attached.
Now that we have completed these reports, the Central Registry processes and procedures are being developed in conjunction with DOE Order 414.1C, Quality Assurance, and DOE Guide 414.1-4, Implementation Guide for Use with Supplemental Safety Software Quality Requirements of DOE Order 414.1. Questions concerning this commitment may be directed to Chip Lagdon at (301) 903-4218 or me at (301) 903-8008.
Frank B. Russo
Deputy Assistant Secretary
for Corporate Performance Assessment
Attachment 1 – MACCS2 Final Guidance Report
cc: Attachment 2 – ALOHA Final Guidance Report
Mark B. Whitaker, DR-1 Attachment 3 – EPICode Final Guidance Report
Richard H. Lagdon, EH-31 Attachment 4 – MELCOR Final Guidance Report
James J. Mangeno, NA-1 Attachment 5 – GENII Final Guidance Report
Patrice M. Bubar, EM-3 Attachment 6 – CFAST Final Guidance Report