Reinforced rubber hose should not be installed if it is over how many years old from the date of manufacture?

Reinforced rubber hose has a finite lifespan due to its material properties and exposure to environmental factors. As rubber ages, it can become brittle, lose flexibility, and may not be able to withstand the pressures and temperatures it was originally designed for. Installing hose that is more than four years old can significantly increase the risk of hose failure, which can lead to system inefficiencies or even catastrophic failures in gas turbine operations.

The four-year guideline recognizes the balance between safety and operational reliability, ensuring that the hose will perform effectively within its intended parameters. Adhering to this standard is crucial for maintaining the integrity and performance of the gas turbine system. Therefore, if the hose is older than four years from the date of manufacture, it should not be installed or used.