The Liquid Nitrogen Cooling System utilizes a continuously recharged, closed-loop system to: generate electricity charge and pressurize hydraulic bypass and operational equipment and, provide emergency cooling.It is triggered by any need for emergency shutdown, applying liquid Nitrogen to cool a nuclear power plant, as an alternate cooling system independently from the regular cooling system, providing a sudden drop of temperature through a liquid Nitrogen manifold system.No greenhouse or explosive gases are generated or released, and no Oxygen is used. Any Nitrogen vented to the atmosphere dissipates rapidly, assumes ambient temperature, and has no long half-life radioactive isotopes. It operates as a closed/static system until needed for cooling.Applications include, but are not limited to, retrofitting to existing systems.