ORLANDO — The federal job safety agency fined SeaWorld Orlando $75,000 on Monday for three violations uncovered while investigating the February death of a trainer who was grabbed by a killer whale and dragged underwater.

The Occupational Safety and Health Administration categorized the most serious violation as “willful,” or showing indifference or intentional disregard for employee safety. That citation, carrying a $70,000 penalty, was for exposing workers to drowning hazards when interacting with killer whales.

The agency proposes not allowing trainers to have any physical contact with Tilikum, the killer whale responsible for trainer Dawn Brancheau’s death in February, unless protected by a physical barrier.

The OSHA report described Tilikum as having “known aggressive tendencies.” The six-ton whale was one of three orcas blamed for killing a trainer in 1991 after the woman lost her balance and fell in the pool at Sealand of the Pacific near Victoria, British Columbia. Tilikum also was also involved in a 1999 death, when the body of a man who had sneaked by SeaWorld Orlando security was found draped over him.

Sea World trainers were forbidden from getting in the water with Tilikum because of the previous deaths. But the killer whale still managed to grab Brancheau’s long hair as she laid on her stomach on a cement clab in three inches of water. The cause of death was drowning and traumatic injuries.

The OSHA report also suggests that trainers not work with other killer whales at the park, either in the water or out of water, unless they are protected by a barrier, deck or oxygen-supply system underwater.

“SeaWorld trainers had an extensive history of unexpected and potentially dangerous incidents involving killer whales at its various facilities, including its location in Orlando,” OSHA said in a statement released with the report.

The second citation, deemed serious, was for failing to install a stairway railing system beside the stage in Shamu Stadium. That citation carried a $5,000 penalty.

The third citation was considered “other-than-serious” and was for failing to have weather-protected electrical receptacles at the stadium. That citation didn’t have a penalty.

SeaWorld spokesman Fred Jacobs said the park will contest the citation.

“SeaWorld disagrees with the unfounded allegations made by OSHA today,” Jacobs said in a statement.