What is the extended service life for critical hoses?

What is the extended service life for critical hoses?

• A. 2 years
• B. 5 years
• C. 12 years
• D. 20 years

Answer: (D)

Extended service life is the authorization to keep a component in service beyond its standard replacement interval, based on engineering analysis and ongoing condition monitoring. Critical hoses carry fluids under pressure and can cause serious consequences if they fail, so any ESL decision rests on solid material data, operating conditions, and proven integrity through inspections and testing. For this scenario, the extended service life is twenty years—the maximum allowed after a thorough evaluation with enhanced monitoring to ensure safe performance over that period. Shorter intervals don’t provide the same extended window for safety-critical hoses and would require earlier replacement or more frequent maintenance instead.

Extended service life is the authorization to keep a component in service beyond its standard replacement interval, based on engineering analysis and ongoing condition monitoring. Critical hoses carry fluids under pressure and can cause serious consequences if they fail, so any ESL decision rests on solid material data, operating conditions, and proven integrity through inspections and testing. For this scenario, the extended service life is twenty years—the maximum allowed after a thorough evaluation with enhanced monitoring to ensure safe performance over that period. Shorter intervals don’t provide the same extended window for safety-critical hoses and would require earlier replacement or more frequent maintenance instead.