How can I estimate the life expectancy of liquefied hydrogen products (valve, instrument, tank, tank trainer, pump, piping, etc.)?

The lifetimes of these components will vary depending upon the application, their installation environment, and usage. It is also important to adhere to the component inspection, maintenance and replacement specifications as recommended by the manufacturer. However, as many are made of stainless steel, their life expectancy is longer than other materials. Estimated lifetimes are below in years: 
•    Liquid Hydrogen Tanks: 15-20 years between refurbishment but lifetime over 40 years is typical (tanks have lasted 40+yrs)
•    Ambient Vaporizers: 15-20 years
•    Pressure control Manifolds: 10-15 years
•    Cryogenic Liquid Pumps: 15-20 years but generally require annual maintenance for wear items
•    Valves instruments, etc.: 5-7 years but may require seal replacements depending on usage