R.I. Gen. Laws § 35-5-1

The director of administration may establish in any state department or agency a system of rotary or rotating funds for petty cash payments and for the purpose of paying such accounts as may in the judgment of the director be desirable. The director may make rules and regulations, not inconsistent with law, to more effectually provide for the operation of rotary or rotating funds, and may change any rules and regulations from time to time when in the opinion of the director it is necessary or advisable.