What classification is applied to buried raceways and cables under Class I locations in bulk storage plants?

In bulk storage plants, the classification applied to buried raceways and cables is based on the potential for the presence of flammable gases or vapors. Class I locations specifically refer to areas where flammable gases or vapors may be present in the atmosphere. The designation of Zone 1 indicates that this area is classified as having a higher likelihood of these hazardous conditions occurring under normal operation.

Buried raceways and cables in these locations are designed and installed with specific considerations in mind to ensure safety from potential ignition sources. By classifying these areas as Class I, Zone 1, it acknowledges that there is a high probability that flammable substances may come into contact with electrical equipment or wiring, necessitating stricter safety measures.

This classification is important as it influences the types of equipment and wiring methods that can be used to ensure compliance with safety standards. It also determines the specific protective measures that must be in place to mitigate risks associated with fire or explosion in bulk storage scenarios.