Lloyd N. Hand, senior vice president and assistant to the chairman of TRW Inc., last week was appointed president and chief executive officer of the National Alliance of Businessmen, an organization set up 10 years ago to train and find jobs for the disadvantaged.

"As president and chief executive officer of NAB," Hand said, "I pledge the full support of the organization to help achieve the goals of President Carter's private sector initiative program which calls for a new spirit of partnership between business, labor and government in order to provide jobs for the hard-to-employ."

Hand joined TRW in 1972 and currently chairs the company's public policy council and is a member of TRW's corporate policy committee.

Prior to joining TRW, he was a partner in the Washington law firm of Wyman, Bautzer, Rothman and Kuchel. He served as chief of protocol for the United States, with the rank of ambassador, from 1964 to 1966.

John P. Harris has been appointed vice president, personnel and training at Annapolis Federal Savings and Loan Association. He was formerly vice president of personnel with Washington Federal Savings and Loan.

David P. Mullen has been appointed executive vice president, merchandising, for Woodward & Lothrop.

Mullen has served as senior vice president and general merchandise manager for the past 18 months.

Diana Daniels has been appointed assistant counsel of The Washington Post, it was announced by Christopher Little, vice president and counsel for the newspaper.

Daniels comes to the Post from the New York law firm of Cravath, Swaine and Moore.

David J. Vitale and Ronald J. Jursa have been elected to the board of directors of the Student Loan Marketing Association (Salle Mae).

Jursa is director of the Michigan Department of Education's Division of Student Financial Assistance Services and is the executive director of the Michigan Higher Education Assistance Authority and the Michigan Higher Education Student Loan Authority.

Vitale is vice president and treasurer of the First Chicago Corp.

William F. McSweeny has been elected to the boards of directors and trustees for Steadman mutual funds. The funds, which are headquartered in Washington, are Steadman American Industry Fund, Steadman Associated Fund, Steadman Investment Fund, Inc. and Oceanographic and Growth Fund Inc.

McSweeny is a vice president of the Occidental Petroleum Corp. and president of one of its subsidiaries, Occidental International Corp. He is a former columnist and foreign correspondent for the Hearst Newspapers.

Frank A*. Montabana was named to the position of vice president, marketing, for American Instrument Co., a subsidiary of Travenol Laboratories.

Prior to joining American Instrument, Montabana was director of corporate development at Electro Nucleonics, Inc.

John P. D'Arcy has joined The Riggs National Bank as vice president in the corporate division responsible for the bank's new Southeastern region.

D'Arcy began his banking career with Citibank in New York as a commercial loan officer in1968.From 1971 to 1974, wwhile on leave from Citibank, he served as staff assistant to President Nixon. Prior to his appointment, he was vice president in charge of the Southeastern and Southwestern regions at European American Bank in New York.

Shearon Harris, chairman and chief executive officer of Carolina Power and Light Co., is the new board chairman for the Chambers of Commerce of the United States.

Other changes at the Chamber includes Jay VanAndel, vice president of the board and William K. Eastman, chairman of the Chamber's executive committe.