Human Factor Estimation for ET Results Reliability of SG Tubes of NPPs with VVER
نویسندگان
چکیده
Steam generator (SG) tube integrity is of great importance for safe and reliable nuclear power plant (NPP) operation. The application of eddy current testing (ET) to evaluate SG tube integrity is recognized worldwide and has been used over several decades. However, at times, ET results are considered questionable. A decision to leave a defective SG tube in operation is made based on the ET results acquired. The reliability of ET can be expressed by the following equation [1, 2, 3]:
منابع مشابه
Increasing Results Reliability for SG Tubes of NPPs with VVER based on Experimental Assessment of Human Factor
Problem of nuclear power plant (NPP) safe operation and risks reducing for nuclear power plants is one of the most actual ones. Taking into account the fact that NPP unit lifetimes are being extended beyond their design period, this problem becomes more and more important. One of the main and critical subsystems for NPP safe operation is steam generator (SG) consisting of (except other systems)...
متن کاملDeveloping Persian version of Sensory Gating Inventory (SGI): Validity and Reliability
Introduction: Sensory Gating Inventory (SGI) measures behavioral aspects of Sensory Gating (SG). It is a filtering mechanism of brain that prevents irrelevant sensory inputs from entering into higher cortex information processing. It modifies sensitivity to sensory stimuli. Abnormal SG leads to overloading of information into cortex and brain dysfunction. Electrophysiological techniques cannot ...
متن کاملAn analytical approach to quantitative effect estimation of operation advisory system based on human cognitive process using the Bayesian belief network
The design of instrumentation and control (I&C) systems for nuclear power plants (NPPs) is rapidly moving towards fully digital I&C systems and is trending towards the introduction of modern computer techniques into the design of advanced main control rooms (MCRs) of NPPs. In the design of advanced MCRs, human–machine interfaces have improved and various types of decision support systems have b...
متن کاملEffects of Specific Gravity and Particle Size of Passage Marker on Particulate Rumen Turnover in Holestine Dairy Cattle
This experiment was carried out to evaluate the effect of specific gravity (SG) and particle size (PS) of Chromium-mordanated alfalfa neutral detergent fiber (NDF) markers on estimation of particulate rumen turnover. Thirty-two multiparous, mid lactation Holstein dairy cows (body weight=654±24 kg) were allotted to a completely randomized design experiment with two replications in a 4×4 factoria...
متن کاملFailure Probability and Remaining Life Assessment of Reheater Tubes
In this study, a real and significant industrial problem in a steam power plant was investigated. Reheater tubes in boilers are under the creep and the fireside corrosion mechanism that cause some of them to fail. Since the estimation of probability of failure (PoF) and remaining life (RL) is expensive and time consuming in the deterministic methods, in this work they were evaluated using struc...
متن کامل