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Title: Prometheus Hot Leg Piping Concept

Abstract

The Naval Reactors Prime Contractor Team (NRPCT) recommended the development of a gas cooled reactor directly coupled to a Brayton energy conversion system as the Space Nuclear Power Plant (SNPP) for NASA's Project Prometheus. The section of piping between the reactor outlet and turbine inlet, designated as the hot leg piping, required unique design features to allow the use of a nickel superalloy rather than a refractory metal as the pressure boundary. The NRPCT evaluated a variety of hot leg piping concepts for performance relative to SNPP system parameters, manufacturability, material considerations, and comparison to past high temperature gas reactor (HTGR) practice. Manufacturability challenges and the impact of pressure drop and turbine entrance temperature reduction on cycle efficiency were discriminators between the piping concepts. This paper summarizes the NRPCT hot leg piping evaluation, presents the concept recommended, and summarizes developmental issues for the recommended concept.

Authors:
 [1];  [2]
  1. Bechtel Bettis, Inc., Bettis Atomic Power Laboratory, West Mifflin, PA 15122 (United States)
  2. KAPL, Inc., Knolls Atomic Power Laboratory, Schenectady, NY 12301 (United States)
Publication Date:
OSTI Identifier:
21054553
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 880; Journal Issue: 1; Conference: International forum-STAIF 2007: 11. conference on thermophysics applications in microgravity; 24. symposium on space nuclear power and propulsion; 5. conference on human/robotic technology and the vision for space exploration; 5. symposium on space colonization; 4. symposium on new frontiers and future concepts, Albuquerque, NM (United States), 11-15 Feb 2007; Other Information: DOI: 10.1063/1.2437489; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; COMPARATIVE EVALUATIONS; DESIGN; EFFICIENCY; ENERGY CONVERSION; HEAT ENGINES; HEAT RESISTING ALLOYS; HTGR TYPE REACTORS; NICKEL; NUCLEAR POWER PLANTS; PERFORMANCE; PRESSURE DROP; REACTOR MATERIALS; REFRACTORY METALS; SPACE PROPULSION REACTORS; TURBINES; NESDPS Office of Nuclear Energy Space and Defense Power Systems

Citation Formats

Gribik, Anastasia M., and DiLorenzo, Peter A. Prometheus Hot Leg Piping Concept. United States: N. p., 2007. Web. doi:10.1063/1.2437489.
Gribik, Anastasia M., & DiLorenzo, Peter A. Prometheus Hot Leg Piping Concept. United States. doi:10.1063/1.2437489.
Gribik, Anastasia M., and DiLorenzo, Peter A. Tue . "Prometheus Hot Leg Piping Concept". United States. doi:10.1063/1.2437489.
@article{osti_21054553,
title = {Prometheus Hot Leg Piping Concept},
author = {Gribik, Anastasia M. and DiLorenzo, Peter A.},
abstractNote = {The Naval Reactors Prime Contractor Team (NRPCT) recommended the development of a gas cooled reactor directly coupled to a Brayton energy conversion system as the Space Nuclear Power Plant (SNPP) for NASA's Project Prometheus. The section of piping between the reactor outlet and turbine inlet, designated as the hot leg piping, required unique design features to allow the use of a nickel superalloy rather than a refractory metal as the pressure boundary. The NRPCT evaluated a variety of hot leg piping concepts for performance relative to SNPP system parameters, manufacturability, material considerations, and comparison to past high temperature gas reactor (HTGR) practice. Manufacturability challenges and the impact of pressure drop and turbine entrance temperature reduction on cycle efficiency were discriminators between the piping concepts. This paper summarizes the NRPCT hot leg piping evaluation, presents the concept recommended, and summarizes developmental issues for the recommended concept.},
doi = {10.1063/1.2437489},
journal = {AIP Conference Proceedings},
number = 1,
volume = 880,
place = {United States},
year = {Tue Jan 30 00:00:00 EST 2007},
month = {Tue Jan 30 00:00:00 EST 2007}
}