Sister Evelyn Roache, 82, who organized the purchasing agency that serves the 38 hospitals run by the Daughters of Charity in the United States, died of cancer May 5 at Providence Hospital.

Sister Evelyn, a native of Washington and a graduate of the old Business High School here, was the purchasing supervisor at Providence Hospital since 1983. For 15 years before that she was the director, first, of central purchasing for the Daughters of Charity hospitals in the eastern United States, and then of the order's National Purchasing Services, which she helped to set up and which has its headquarters in St. Louis.

Sister Evelyn graduated from St. Joseph's College in Emmitsburg, Md. While a novitiate, she taught at St. Dominic's School in Baltimore. In 1939, she took her vows as a Sister of Charity. The order is devoted to the healing arts and Sister Evelyn made her career in hospital administration.

She began as the admitting officer of the St. Agnes Hospital in Baltimore. Later she was the administrator of the Lourdes Hospital in Binghamton, N.Y., and of St. Vincent's Hospital in Jacksonville, Fla. From 1953 to 1962, she was counselor at the Provincial House in Emmitsburg, the headquarters of the Sisters of Charity. For the next six years she was the administrator of the Seton Hospital in Waterville, Maine.

In 1968, Sister Evelyn returned here to direct the central purchasing operation.

She was a fellow of the American College of Hospital Administators and a member of the American Hospital Association, the Delaware-Maryland-D.C. Hospital Association and the American Association of Hospital Accountants.

Survivors include a sister, Elsie Roache of Bethesda.