In sewer maintenance, what is a pig?

In sewer maintenance, what is a pig?

• A. A bullet shaped object passed through a force main
• B. A power rod
• C. Any foul smelling equipment
• D. The hydraulic rodding truck

Answer: (A)

In sewer maintenance, a pig is a device placed inside a pipe and pushed or driven through the line to clean, separate liquids from solids, or inspect the interior. The description of a bullet-shaped object passed through a force main matches this use precisely, since pigs are designed to travel inside pressurized sewer mains to scour the walls and push debris ahead. They’re not just any equipment—they’re purpose-built tools that move through the pipe to perform cleaning or inspection tasks, often propelled by flow, air, or hydraulic means. Other tools like a power rod or a hydraulic rodding truck are different kinds of blockage-removal equipment, not the traveling cleaning/inspection device itself, and a foul-smelling label isn’t part of what defines a pig.

In sewer maintenance, a pig is a device placed inside a pipe and pushed or driven through the line to clean, separate liquids from solids, or inspect the interior. The description of a bullet-shaped object passed through a force main matches this use precisely, since pigs are designed to travel inside pressurized sewer mains to scour the walls and push debris ahead. They’re not just any equipment—they’re purpose-built tools that move through the pipe to perform cleaning or inspection tasks, often propelled by flow, air, or hydraulic means. Other tools like a power rod or a hydraulic rodding truck are different kinds of blockage-removal equipment, not the traveling cleaning/inspection device itself, and a foul-smelling label isn’t part of what defines a pig.