What requirement must be employed if an ice obstruction is found during an inspection of penetrations into the area of cold storage?

The correct answer emphasizes the need for a comprehensive response when ice obstruction is discovered during inspections in cold storage environments. If ice has formed around the piping penetrations, it can potentially impact the function of the fire protection system. Therefore, examining additional pipes helps in identifying any further obstructions or issues that could impede proper operation of the fire suppression system.

When ice blocks these penetrations, there may be underlying factors affecting not just the visible pipes but possibly others in the vicinity as well. By examining additional pipes, inspectors can ensure that the entire system is free from obstructions, thereby maintaining reliable functionality of the water-based fire protection system. This is a proactive approach to ensure optimal performance of the system in case of a fire emergency.

Other options suggest different solutions, such as replacing insulation or installing heating devices, which may address the symptoms of the problem rather than investigating the extent of the obstruction. Checking all sprinklers for functionality is important, but it is not the first step to take in addressing the specific issue of ice obstruction found during an inspection. The priority must be to examine the extent of the problem in all affected areas first.