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U.S. Department of Energy
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Validation and verification summary report for GRIMHX and TRIMHX

Technical Report ·
DOI:https://doi.org/10.2172/5038892· OSTI ID:5038892

As part of the code Certification process, codes used by Reactor Physics to calculate values in Technical Specifications or Safety Analyses must undergo formal Validation and Verification. GRIMHX and TRIMHX are codes used in such a manner. This report summarizes and consolidates the work done to date on the Validation and Verification of these two codes. GRIMHX is a 3-D static reactor code which uses finite difference algorithms to solve the neutron diffusion equation in hex-z geometry. TRIMHX is the time dependent version of GRIMHX and solves the delayed neutron precursor equations in addition to the neutron diffusion equation. Both of these codes were developed at SRS in the early 1970s.

Research Organization:
Westinghouse Savannah River Co., Aiken, SC (United States)
Sponsoring Organization:
DOE; USDOE, Washington, DC (United States)
DOE Contract Number:
AC09-89SR18035
OSTI ID:
5038892
Report Number(s):
WSRC-TR-90-594; ON: DE92015060
Country of Publication:
United States
Language:
English