Controlling a power output of a nuclear reaction using chemical injection

A nuclear power system, comprising:

• a reactor vessel;
• a nuclear fuel assembly positioned within the reactor vessel and configured to generate a power output;
• a chemical injection system configured to inject a chemical into coolant positioned in the reactor vessel and remove the chemical from the coolant positioned in the reactor vessel;
• and
• a control system communicably coupled to the chemical injection system, the control system being configured to perform operations to control the power output of the nuclear fuel assembly, the operations comprising:
• determining that the power output is less than a lower value of a range;
• and
• based on the determination, removing an amount of the chemical from the coolant positioned in the reactor vessel by the chemical injection system to increase the power output of the nuclear fuel assembly.

A nuclear power system, comprising;

• a reactor vessel;
• a nuclear fuel assembly positioned within the reactor vessel and configured to generate a power output;
• a chemical injection system configured to inject a chemical into coolant positioned in the reactor vessel and remove the chemical from the coolant positioned in the reactor vessel;
• and
• a control system communicably coupled to the chemical injection system, the control system being configured to perform operations to control the power output of the nuclear fuel assembly, the operations comprising:
• determining that the power output is greater than an upper value of a range or less than a lower value of the range;
• and
• based on the determination, adjusting an amount of the chemical injected into or removed from the coolant by the chemical injection system to adjust the power output of the nuclear fuel assembly.

A nuclear power system, comprising:

• a reactor vessel that, does not include any control rod assemblies therein;
• a nuclear fuel assembly positioned within the reactor vessel and configured to generate a power output;
• a chemical injection system configured to inject a chemical into the reactor vessel and remove the chemical from the reactor vessel;
• and
• a control system communicably coupled to the chemical injection system, the control system being configured to perform operations to control the power output of the nuclear fuel assembly, the operations comprising:
• determining that the power output is greater than an upper value of a range or less than a lower value of the range;
• and
• based on the determination, adjusting an amount of the chemical injected into or removed from the reactor vessel by the chemical injection system to adjust the power output of the nuclear fuel assembly.

A nuclear power system, comprising:

• a reactor vessel;
• a nuclear fuel assembly positioned within the reactor vessel and configured to generate a power output;
• a chemical injection system configured to inject a chemical into coolant positioned in the reactor vessel and remove the chemical from the coolant positioned in the reactor vessel;
• a control system communicably coupled to the chemical injection system, the control system being configured to perform operations to control the power output of the nuclear fuel assembly, the operations comprising:
• determining that the power output is greater than an upper value of a range or less than a lower value of the range;
• and
• based on the determination,
• if the power output is greater than the upper value, increasing an amount of the chemical injected into the coolant positioned in the reactor vessel by the chemical injection system to decrease the power output of the nuclear fuel assembly;
• or
• if the power output is less than the lower value, removing an amount of the chemical from the coolant positioned in the reactor vessel by the chemical injection system to increase the power output of the nuclear fuel assembly.