KRS 234.230: Class A liquid to be purged from tank and piping before use with Class B

liquid.

No compartment of a tank vehicle which has contained a Class A liquid on the prior

loading shall be loaded with Class B liquid until such compartment and all piping and

accessory delivery equipment connected thereto have been drained of all Class A liquid

and then flushed with a quantity of Class B liquid sufficient to clear them of any

remaining Class A liquid; or cleared of Class A liquid by some equally effective method.