New York Power Authority board of trustees have approved competitive contract awards to two Amherst businesses for upgrades to the safety systems at the St. Lawrence-Franklin D. Roosevelt Power Project in Massena, and an assessment of the control room equipment of the Robert Moses Niagara Power Plant in Lewiston. The respective contracts will go to Johnson Controls Inc. for approximately $4.9 million, and Hatch Associates Consultants Inc., for $434,600.