Piping systems that are known to have a remaining life of over 10 years or that are adequately protected against
external corrosion need not be included for the NDE inspection recommended in Table 3. However, the condition of
the insulating system or the outer jacketing, such as a cold-box shell, should be observed periodically by operating or
other personnel. If deterioration is noted, it should be reported to the inspector. The following are examples of these
systems: