Code	Inspection	Interval
V	External Visual Inspection** DOT Annual (running gear) Inspection required at this time	Annual
I*	Internal Visual Inspection	Annual
K	Leakage Test	Annual
L	Lining Inspection	Annual
UC	Upper Coupler Inspection	Every 2 Years
T	Thickness Test	Every 2 Years
P	Pressure Test	Every 5 Years
CARB	California Air Resource Board Vapor Recovery	Annual
BIT	Running Gear	Every 90 Days

**Note: For tanks dedicated to non-corrosive ladings (e.g. Petroleum): V and K are due Annually; I and P are due Every 5 Years.
*Note: Rear Opening Head Visual Inspection due Every 6 Months
Exceptions for MC330/MC331/MC338 - Call us for info

Testing performed in accordance with DOT 49CFR180.407 and 49CFR 393-396