How long must the container pressure relief valve be replaced in cylinders used in industrial truck service after the date of manufacture?

The correct answer is 12 years. The significance of replacing the pressure relief valve in cylinders used in industrial truck service after 12 years of the date of manufacture is critical for safety. Pressure relief valves play a crucial role in ensuring that excess pressure does not lead to catastrophic failures, which could cause serious accidents or injuries.

The 12-year replacement timeframe is established based on safety standards and regulations. Over time, these valves can become less reliable due to environmental conditions, wear and tear, and corrosion, which can impair their functionality. By adhering to the 12-year replacement guideline, users help ensure that the equipment operates effectively and safely, thus minimizing the risk associated with propane storage and use in industrial settings.

Twenty years, ten years, and five years do not align with the established safety and regulatory standards set forth for propane containers, making the identification of 12 years essential for compliance and safety in the industry.