Okla. Stat. tit. 52, § 52-420.3A: Liability of sellers, suppliers, handlers, or

transporters of liquified petroleum gas.

A. A person is not liable for damages and no legal action shall

be commenced or maintained against such person engaged in this state

in the business of selling at retail, supplying, handling, or

transporting liquefied petroleum gas if the alleged injury, damage,

or loss was caused by:

1. The alteration, modification, or repair of liquefied

petroleum gas equipment, containers, or a liquefied petroleum gas

appliance if the alteration, modification, or repair was done

without the knowledge and consent of the liquefied petroleum gas

seller, supplier, handler, or transporter; and

2. The liquefied petroleum gas equipment, containers, or a

liquefied petroleum gas appliance being used in a manner or for a

purpose other than that for which the equipment or appliance was

intended.

B. This section shall apply only to a person who complies with

the approved standards and rules as outlined in subsection E of

Section 420.3 of this title and who has not acted in a grossly

negligent or willful and wanton manner.