Following the external visual inspection of susceptible systems, additional examination is required for the inspection
of CUI. The extent and type of the additional CUI inspection are listed in Table 3. Damaged insulation at higher
elevations may result in CUI in lower areas remote from the damage. NDE inspection for CUI should also be
conducted as listed in Table 3 at suspect locations meeting the temperature criteria listed in API 574. RT or insulation
removal and visual inspection is normally required for this inspection at damaged or suspect locations. Other NDE
assessment methods may be used where applicable. If the inspection of the damaged or suspect areas has located
significant CUI, additional areas should be inspected and, where warranted, up to 100 percent of the circuit should be
inspected.