Wellbore mud pit safety system

A method for preventing a safety incident;

• the method comprising:
• detecting a state change of a perimeter detection arrangement arranged around an edge of a pit of fluid deploying a rescue device in a fluid pit filled with a fluid;
• detecting a change in fluid height using a plurality of sensors arranged above the fluid pit filled with the fluid, wherein detecting a state change of a perimeter detection arrangement arranged around the edge of the fluid pit comprises:
• generating a light emitter perimeter around an edge of the fluid pit;
• and
• detecting a break in the light emitter perimeter;
• and
• deploying a rescue device in the fluid pit in response to detecting the state change and in response to detecting the change in the fluid height.

A fluid pit safety system to prevent drowning incidents in a fluid pit, the system comprising:

• an ultrasonic sensor spatially disposed adjacent the fluid pit filled with a fluid, the ultrasonic sensor configured to detect a change in fluid height in the fluid pit;
• a perimeter detection sub-system defining a perimeter arranged around an edge of the fluid pit, the perimeter detection sub-system configured to detect an object crossing the perimeter;
• a rescue device arranged in the fluid pit, the rescue device comprising a net, wherein a first end of the net is configured to move towards a surface of the fluid in the fluid pit in response to the ultrasonic sensor detecting the change in the fluid height in the fluid pit and the perimeter detection sub-system detecting the disruption in the perimeter;
• and
• a computer system operatively coupled to the ultrasonic sensor, the perimeter detection sub-system and the rescue device, the computer system comprising:
• one or more processors;
• and
• a non-transitory computer-readable medium storing instructions executable by the one or more processors to perform operations comprising:
• receiving a first signal from the ultrasonic sensor in response to the change in the fluid height in the fluid pit;
• receiving a second signal from the perimeter detection sub-system in response to detecting the disruption in the perimeter;
• and
• actuating a rescue sub-system connected to the rescue device to move the rescue device towards the surface of the fluid in the fluid pit.