Understanding Class Locations in Onshore Natural Gas Pipelines
Class locations are a critical aspect of pipeline safety, especially for onshore natural gas pipelines regulated under Title 49, Part 192. These locations are determined based on the proximity of buildings intended for human occupancy and are categorized into four classes, each with specific safety requirements. This content provides an overview of how class locations are defined and updated, including the concept of the "sliding mile" for assessing building density along a pipeline. It also covers the evolution of class location regulations and the importance of maintaining accurate records to demonstrate compliance with these federal requirements.