The Oil, Chemical and Atomic Workers International Union, angry at the state of Virginia for its handling of a job safety settlement in Fairfax City, has asked the Labor Department to withdraw its approval of Virginia's job sagety inspection program.

The union, the same one now involved in a dispute over job safety at the Radford, Va., Army Ammunition Depot, has submitted a petition and six complaints aginst the state to the Labor Department.

The program allows state inspectors, rather than officers of the federal Occupational Safety and Health Administration, to make safety inspections throughout the state.

After an explosion on June 23, 1977, at the Amoco Oil Company's petroleum marketing terminal in Fairfax City, the state inspected the facility and issued safety violation citations.

The union's complaints were filed with the Labor Department in February after a state court refused to allow the union to participate in settlement negotiations between that state and Amoco.

The union alleges in its petition that the state has not given it a copy of proposed penalties stemming from the incident and that it was refused permission to look at a copy of the settlement until several days afterward.

The union also said that a state law requiring parties appearing in court to be represented by an attorney is "detrimental to the union because of the expense."