Other
Scientific paper
Jul 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jpnt.confrw...b&link_type=abstract
AIAA, SAE, ASME, and ASEE, Joint Propulsion Conference and Exhibit, 28th, Nashville, TN, July 6-8, 1992. 15 p.
Other
Failure Modes, Flight Safety, Mars (Planet), Nuclear Engine For Rocket Vehicles, Nuclear Propulsion, Space Exploration, Earth Environment, Failure Analysis, Kinetic Energy
Scientific paper
A range of safety topics related to the use of nuclear thermal propulsion (NTP) are examined including risk and safety analysis methodologies, NERVA reliability, and life-cycle risk assessments. A list of goals for the safe use of NTP is given which includes low radiation levels, avoiding unplanned core destruction, and preventing inadvertent criticality. Safety analysis and failure-mode analysis for NTP are illustrated by means of the fault tree analysis, event tree analysis, failure modes and effects analysis, and preliminary hazards analysis. Data from the NERVA propulsion program show that safety requirements built into the NTP engine are important for diagnostic and preventive assessments. Other key issues affecting the safety of an NTP program encompass precautions at the launch pad, crew isolation from reactor radiation, flight operations safety, and final disposal of the NTP engines and wastes.
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