KIEV, July 31 - Standard & Poor's revised its credit rating outlook on Ukraine to positive, from negative, following the release of a $3.3 billion loan installment from the International Monetary Fund.

The rating agency affirmed the 'CCC+/C' long- and short-term foreign currency sovereign credit ratings, the 'B-/C' long-term and short-term local currency ratings, and the 'uaBBB' Ukraine national scale ratings.