; and (2) not more than 30 days after a change in such operator’s operating or repair procedures as a result of the reported failure, report in writing such change to the Secretary. (e) Definitions In this section: (1) Blowout preventer system The term blowout preventer system means a wellhead device or combination of devices that is specifically designed to prevent the uncontrolled release of gas, oil, or other fluids or hydrocarbons. (2) Critical system The term critical system means safety and pollution prevention equipment or a blowout preventer system. (3) Equipment failure The term equipment failure means any conditions that prevents equipment from meeting its functional specifications or purpose. (4) Operator The term operator means the operator of an offshore oil or gas facility. (5) Safety and pollution prevention equipment The term safety and pollution prevention system means any equipment that is specifically designed to prevent a malfunction or failure of an offshore well, resulting in injury or loss of life, damage to the environment, or serious damage to the equipment, including— (A) surface safety valves and actuators; (B) boarding shutdown valves and the actuators of such valves; (C) underwater safety valves and actuators; (D) subsurface safety valves and associated safety valve locks and landing nipples; and (E) gas lift shutdown valves and actuators associated with such valves. (6) Secretary The term Secretary means the Secretary of the Interior.