What are the requirements for detector locations when they are being used to protect a high rack storage area?

The correct choice highlights that detector locations must be strategically placed at intermediate levels in the racks and on the ceiling above each aisle. This is essential for ensuring effective fire detection and response in high rack storage areas, which often have unique challenges due to their height and arrangement.

When placing detectors at intermediate levels, it allows for more precise detection of heat and smoke that may originate from a fire at those levels, rather than solely relying on ceiling-mounted detectors that could be significantly distant from the fire's source. Furthermore, having detectors on the ceiling above each aisle ensures that any potential smoke or heat rising from the aisles can be promptly detected, improving the overall safety and effectiveness of the fire alarm system.

It's important to meet these requirements in order to align with industry standards and codes, which focus on maximizing the reliability of fire detection in environments where traditional single-level placements may not adequately cover the potential fire risks associated with high rack storage. This approach increases the chances of early detection, which is crucial for minimizing fire damage and ensuring the safety of both personnel and property.