If an airline feeding a dry or pre-action system runs through the freezer, how long must the removable piece of 1" pipe be for inspection?

In the context of inspecting an airline that feeds a dry or pre-action system and traverses through a freezer, the requirement for the removable piece of pipe to be 6 feet long is based on the need to maintain access for inspection and potential maintenance.

Having a length of 6 feet allows inspectors adequate clearance and space to assess the condition of the pipe, ensuring that any deterioration or issues can be addressed properly. This length is also in alignment with safety standards and industry practices that emphasize sufficient access to components critical to the functionality of fire protection systems.

Furthermore, the choice of 6 feet specifically suits the environmental conditions generally encountered in freezers, where condensation and other changes may occur, potentially affecting the integrity of the pipe. This consideration is part of standard operational procedures to ensure that the system can function effectively even under challenging conditions.

Other length options, such as 2 feet, 12 feet, or 1 foot, do not align with typical accessibility and inspection protocols for such systems in freezing environments.