Understanding API ICP653 Reading 7-Worksheet-04 Part1

SECTION 6 - INSPECTION
6.1 General - In-service Inspection of Tanks
6.2 Inspection Frequency Considerations
6.2.1 Some factors determining inspection frequency:
a. Nature of stored product.
b. Visual inspection/maintenance results.
c. Corrosion rates and/or allowances.
d. Corrosion prevention systems.
e. Previous inspection results.
f. Methods-materials of construction or repair.
g. Tank location (i.e., isolated, grouped, high risk areas).
h. Potential for air, water or soil pollution.
i. Leak detection systems.
j. Change in operating mode.
k. Jurisdictional requirements.
l. Changes in service (including water bottoms).
m. The existence of a double bottom or a release prevention barrier.
Charlie Chong/ Fion Zhang