454. The sums which constitute a fund established under section 452 shall be deposited with an institution whose deposits are guaranteed by the Régie de l’assurance-dépôts du Québec and shall be used exclusively for payment of the management costs of the fund, the capital and interest on any amount borrowed for its funding and the purchase price of the permanent shares issued by the credit unions which are members of the federations affiliated with the confederation which has established the fund.