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The application of digital instrumentation and control systems in Nuclear Power Plants (NPPs) provides a series of advantages, but it also raises challenges in the reliability analysis of safety-critical systems in the NPPs. Software testing is one of the most significant processes to assure software reliability, and the safety-critical systems of NPPs are sensitive to the severity of software faults,...
A high-temperature gas-cooled reactor-pebble bed module (HTR-PM), as a demonstration nuclear power plant (NPP), is now under construction in the Shandong province of China. The reactor protection system (RPS) in an HTR-PM is a safety-related system and is mainly in charge of monitoring safety-related parameters according to the reactor protection requirements. Thus, an RPS is very important to operations...
The demanding noise figure (NF) and linearity by direct conversion and low intermediate frequency (IF) architectures make the design of active mixer extremely challenging. According to second order intermodulation and flicker noise mechanisms reviewed in this paper, we find some factors affect both the IIP2 and NF of the Gilbert cell simultaneously. AC coupling is adopted to filter out the low frequency...
This paper presents a 5.8 GHz low noise amplifier (LNA) for electronic toll collection system (ETCS). Traditional design strategy of source inductor feedback amplifier (L-CSLNA) ignores the influence of off chip matching, such as print circuit broad (PCB), bonding wire and passive chip parts which greatly affect the performance of LNA at high frequency. In this paper we adopt 3D electromagnetic simulation...
The formation and performance of granular sludge seeded with flocculating sludge was studied in a 4L sequencing batch reactor (SBR) treating a synthetic wastewater with sodium acetate as carbon source. By gradually reducing the settle time from 30 to 10 min, granule sludge was formed on day 20. The granules had a specific gravity of 1.0439, diameters of 0.5-2 mm, and sludge volume index (SVI) of less...
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