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Title: Preliminary nuclear safety assessment of the NEPST (Topaz II) space reactor program

The United States (US) Strategic Defense Initiative Organization (SDIO) decided to investigate the possibility of launching a Russian Topaz II space nuclear power system. A preliminary nuclear safety assessment was conducted to determine whether or not a space mission could be conducted safely and within budget constraints. As part of this assessment, a safety policy and safety functional requirements were developed to guide both the safety assessment and future Topaz II activities. A review of the Russian flight safety program was conducted and documented. Our preliminary nuclear safety assessment included a number of deterministic analyses, such as; neutronic analysis of normal and accident configurations, an evaluation of temperature coefficients of reactivity, a reentry and disposal analysis, an analysis of postulated launch abort impact accidents, and an analysis of postulated propellant fire and explosion accidents. Based on the assessment to date, it appears that it will be possible to safely launch the Topaz II system in the US with a modification to preclude water flooded criticality. A full scale safety program is now underway.
Authors:
Publication Date:
OSTI Identifier:
6503157
Report Number(s):
SAND-93-1067C; CONF-9305179--1
ON: DE93012853
DOE Contract Number:
AC04-76DP00789
Resource Type:
Conference
Resource Relation:
Conference: 2. specialists conference and short course on thermionic energy conversion, Goteborg (Sweden), 3-7 May 1993
Research Org:
Sandia National Labs., Albuquerque, NM (United States)
Sponsoring Org:
DOD; Department of Defense, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; 45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE; SPACE POWER REACTORS; SAFETY ANALYSIS; USSR; BALLISTIC MISSILE DEFENSE; CRITICALITY; MISSION ANALYSIS; REACTOR SAFETY; ASIA; DEVELOPED COUNTRIES; EUROPE; MOBILE REACTORS; NATIONAL DEFENSE; POWER REACTORS; REACTORS; SAFETY NESDPS Office of Nuclear Energy Space and Defense Power Systems 220900* -- Nuclear Reactor Technology-- Reactor Safety; 210600 -- Power Reactors, Auxiliary, Mobile Package, & Transportable; 450500 -- Military Technology, Weaponry, & National Defense-- Strategic Defense Initiative-- (1990-)