Pressurized water reactors design method

The most common industrial method to make ultra-pure hydrogen is by steam-methane reforming (SMR) using a catalyst at the temperature 890-950° C. The reformed gas is then subjected to a high temperature water gas shift (WGS) reaction at 300-400°C. The WGS reactor effluent typically contains 70-80% H2, 15-25% CO2, 1-3% CO, 3-6% CH4, and trace N2 (dry basis), which is fed to a PSA system at a pressure of 8-28 atm and a temperature of 20 0°C for production of an ultrapure (99.99+ mol%) hydrogen gas at the feed pressure. Various PSA systems have been designed for this purpose to produce 1-120 million cubic feet of H2 per day. 

The process instrumentation system of the JRR-3M is consists of an instrumentation and control system and a safety protection system It is designed to measure process variables, such as flow rate, temperature, water level, pressure and so on, to provide information which is necessary for reactor operation and safety protection The measuring methods adopted in the system are of conventional ones but safety important components used are specified as reactor grade ... 

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