Engineered safeguards systems and method in nuclear power plant training simulator

An automated training simulator for the realtime dynamic operation of a nuclear power plant having an engineered safeguards system including a reactor vessel connected to a reactor coolant loop into which boric acid is capable of being injected from a boric acid tank, comprising

• a control console having command devices operable to generate input data values;
• calculating means including sequence controlling means having the following components,
• a. means to generate a data value relating to reactor coolant loop flow and data values relating to nuclear reactor operation,
• b. means to generate data values relating to boron concentration in the reactor coolant loop in accordance with generated data values relating to reactor coolant system flow into and out of a reactor coolant system,
• c. means to generate data values relating to boron concentration for governing the data values relating to nuclear reactor operation,
• d. means to delay the data values relating to a change in boron concentration in accordance with the data value relating to reactor coolant loop flow;
• and
• indicating means responsive to the generated data values to monitor plant operation.

An automated training simulator for the realtime dynamic operation of a nuclear power plant having an engineered safeguard system including a surge tank for cooling plant components, comprising

• a control console having command devices operable to generate input data values;
• calculating means including sequence controlling means having the following components,
• a. means to generate a data value relating to average temperature of the fluid in the component cooling system in accordance with a mixing equation,
• b. means to generate a data value relating to the specific volume of the fluid,
• c. means to generate a data value relating to a change in specific volume in accordance with said generated values,
• d. means to generate a data value relating to surge flow in the tank in accordance with the generated specific volume data value;
• and
• indicating means operative in accordance with the generated data values.

An automated training simulator for the realtime dynamic operation of a nuclear power plant having an engineered safeguard system that includes a seal flow system for the reactor coolant pumps, comprising

• a control console having command devices operable to generate input data;
• calculating means including sequence controlling means having the following components,
• a. means to generate data values relating to pressure drop across the pump seals in accordance with generated data values including reactor coolant system flow data values,
• b. means to generate data values relating to return flow from the pump seals in accordance with data values related to bypass flow,
• c. means to generate data values relating to seal temperatures in accordance with generated data values relating to reactor coolant system temperature,
• d. means to generate data values relating to seal water temperature at a predetermined rate at times when the inlet flow data is below a predetermined amount;
• and
• indicating means governed by the generated data values.

An automated training simulator for the realtime dynamic operation of a nuclear power plant having an engineered safeguard system that includes an accumulator system having at least one accumulator tank for automatically discharging coolant water into the reactor coolant loops when the pressure in the loop is below a predetermined amount, comprising

• a control console having command devices for generating input data values;
• calculating means including sequence controlling means having the following components,
• a. means to sense a data value relating to pressure in the accumulator tank,
• b. means to sense a data value relating to liquid mass in the accumulator tank,
• c. means to generate data values relating to valve admittances in accordance with a predetermined minimum mass data value,
• d. means to generate a data value relating to accumulator system pressure in accordance with a generated data value relating to accumulator tank pressure,
• e. means to generate a data value relating to accumulator system flow in accordance with generated data value relating to pressure and a fluid inertia data value,
• f. means to generate a data value relating to accumulator tank pressure in accordance with a vapor pressure data value,
• g. means to generate data values relating to the open condition of accumulator system valves when the reactor coolant system pressure is less than the accumulator system pressure, and
• indicating means governed by the generated data values to monitor plant operation.