The purpose of this paper is to describe the flow oscillations which occur in the
AP600 long term cooling test facility at Oregon State University. The AP600 system is
an advanced pressurized water reactor design utilizing passive emergency cooling
systems.
A few hours after the initiation of a cold leg...
A method is presented for appraising the hazards to nuclear
power plants from missiles from surface traffic accident explosions.
Due to the infrequency with which surface traffic accident explosions
occur and the poor records kept concerning them, a probabilistic
method is chosen to investigate the overall hazards potential to
nuclear...
A series of small break loss of coolant accident (SBLOCA) analyses in nuclear plant shutdown operations was simulated using the code RELAP5A,MOD3 version 8.0 to predict the SBLOCA phenomena in the Zion-l nuclear power plant The first objective is to study the impact of SBLOCA (1" and 2" breaks) on...
The cost of ionizing radiation exposure to people and property has
been estimated as between $10 and $250 per man-rem by several investigators
in the early 70's. These values were considered acceptable by the International
Commission on Radiological Protection (ICRP). However, in the
U.S. Nuclear Regulatory Commission's (NRC) "Numerical guide...
A PC based on-line advanced plant simulator (OLAPS)
for high quality simulations of Portland General
Electric's Trojan Nuclear Facility is presented. OLAPS
is designed to simulate the thermal-hydraulics of the
primary system including core, steam generators, pumps,
piping and pressurizer. The simulations are based on a
five equation model that...
The stability analysis for a heated tube system is an
important safety feature of a nuclear power plant.
Although the system theory is well established for linear
systems described by ordinary differential equations, there
is still a shortage of theory dealing with a distributed
system, which is described by partial...
Detection systems used to monitor reactor operations are of significant interest as tools for verification of operator declarations. Current reactor site safeguards are limited to visual inspections and intrusive monitoring systems. The recent development of antineutrino detectors may soon allow real-time monitoring from an unobtrusive location. Antineutrinos are produced through...
The 1979 incident at Three Mile Island drew attention to weaknesses in the capability to obtain and analyze reactor coolant
samples in an environment where the reactor core incurs significant
damage. As a result, the U.S. Nuclear Regulatory Commission promulgated regulations requiring that reactor coolant analytical capabilities be upgraded so...
The Run-Ahead Predictive Simulation Software (RAPSS) is an architecture designed for faster-than-real-time decision support for operators of complex networks. To enable further development of the RAPSS methodology, the necessary proof of principle is illustrated in two applications: decision support for shift technical advisors in nuclear power plant control rooms (RAPSS-STA),...
A prototype real-time process monitoring emergency
classification expert system, RT/EM-CLASS, has been developed
for use at the Trojan Nuclear Power Plant. This knowledge-based
system features the integration of electronically sensed plant
data with the menu selection data representation of its
predecessor, EM-CLASS. This prototype demonstrates the
techniques required to acquire...