33 C.F.R. § 146.30

(a) The owner, operator, or person in charge of a fixed OCS facility must ensure that the Coast Guard is notified as soon as possible after a casualty occurs, and by the most rapid means available, of each casualty involving the facility which results in:

(1) Death;

(2) Injury to five or more persons in a single incident;

(3) Damage affecting the usefulness of primary lifesaving or firefighting equipment;

(4) Injury causing any person to be incapacitated for more than 72 hours; or

(5) Damage to the facility exceeding $75,000 resulting from a collision by a vessel with the facility.

(b) The notice required by paragraph (a) of this section must identify the person giving the notice and the facility involved and describe, insofar as practicable, the nature of the casualty and the extent of injury to personnel and damage to property.

(c) Damage costs referred to in paragraph (a)(5) of this section include the cost of labor and material to restore the facility to the service condition which existed prior to the casualty, but does not include the cost of salvage, cleaning, or gas freeing of the facility.

(d) The owner, operator, or person in charge of any floating OCS facility must report casualties in accordance with 46 CFR part 4.

(e) The owner, operator, or person in charge of a foreign floating OCS facility must include in the written casualty report required under 46 CFR 4.05-12 information relating to alcohol or drug involvement.