PKMJT, which has headquarters in Pennsylvania, is a consulting and engineering services company serving the nuclear power industry.
"Our investment in PKMJ represents another significant step toward growing our global civil nuclear business and providing customers with a suite of services to deliver safe and efficient lifecycle operations," said Lawrie Haynes, president of Rolls-Royce-Nuclear.
"PKMJ supports every nuclear utility in the U.S. and Canada with an impressive portfolio of services and solutions and employs some of the most highly skilled people in the industry. We look forward to welcoming them into our business."
Rolls-Royce-Nuclear develops techniques and solutions to manage, enhance and extend the lifetime of nuclear power plants and acquisition of PKMJ Technical Services will accelerate its growth in nuclear services sector.
PKMJ President Paul Tobin said, "(The) acquisition ... provides us with an excellent platform from which to grow the comprehensive plant optimization service that we already provide."