Used WALKER D-407-W4 #165140 for sale

WALKER D-407-W4 nuclear reactor is a liquid metal-cooled, graphite-moderated reactor designed for both power generation and research applications. Designed and developed by the Lawrence Livermore National Laboratory in 1973, D-407-W4 was an update to the original WALKER D-407 model, which was developed in 1972. The original reactor was replaced with an improved version featuring advances in safety technology, as well as incorporating a redesigned planar core and safety equipment. WALKER D-407-W4 reactor features four separate nested fuel elements that maximize neutron utilization, as well as core peaking factors. This allows for improved thermal efficiency by allowing for more precise control over the neutron flux produced from varying the core composition. The reactor operates using a combination of liquid metal-cooled (sodium NaK) and water-cooled thermal shields, with a total power output of 1.5MW thermal. The core of the reactor is driven by a full-pressure-loaded, graphite-backed fuel block, which is enclosed in a leak-free biological shield made of concrete and metal. D-407-W4 contains an integrated safety system that includes an Automatic Reactor Shutdown Unit (ARSS), which is used to instantly shut the reactor down in the event of a fault. In addition, the reactor also supplied with an Emergency Protection Machine (EPS), which is designed to protect the reactor core in the event of a malfunction. Furthermore, the reactor has been equipped with a number of detectors and monitors to detect anomalies or power excursions within the core. This allows operators to take corrective action in the event of any abnormalities. The reactor is also equipped with a bypass tool, designed to divert the coolant flow away from the core in the event that a critical temperature is reached. The reactor is also supplied with an integral safety shutdown asset, which detects and stops a reactor imbalance should the need arise. Finally, the reactor has been equipped with advanced instrumentation for precise operational control. This consists of a multi-channel power control model, which is used to control parameters such as core and environmental temperature, as well as fuel burnup. Overall, WALKER D-407-W4 reactor is an innovative and advanced reactor designed for both research and power generation. With its numerous safety features, modern instrumentation, and precise control, the reactor is well-suited to its intended uses, and is a reliable and efficient source of power.