SALEM, Mass. (AP) ­- The owner of a Salem power plant where three workers died in an explosion last year has been cited by federal regulators for alleged safety violations.

The Occupational Safety and Health Administration said on Wednesday that Dominion Energy New England failed to take effective steps to protect employees against burn hazards and other bodily injuries.

The company was issued 10 serious citations that carry a proposed fine of $46,800.

Dominion spokesman Jim Norvelle said the company will “vigorously contest” the citations and has already addressed most of OSHA’s alleged safety violations.

Mark Mansfield, Phil Robinson and Matthew Indeglia were killed when a boiler tube ruptured at the Salem Harbor Power Station on Nov. 6, 2007, blasting them with hot steam.

OSHA said the portion of the boiler where the rupture occurred had not been entered or inspected in more than nine years.