51. The reserve account may be used by the manager only for one of the following purposes:(1) to pay a claim originating from a guarantee certificate issued under the approved plan for which a sum was deposited in that account under section 50;
(2) to reimburse the sums due to the contractor following the cancellation of a guarantee certificate for which a sum was deposited in that account under section 50;
(3) to pay the external claims settlement costs related to a claim originating from a guarantee certificate for which a sum was deposited in that account under section 50; or
(4) to pay the internal claims settlement costs directly related to a claim originating from a guarantee certificate for which a sum was deposited in that account under section 50.
However, where, at the end of each fiscal year, the reserve account exceeds the actuarial reserve referred to in section 56, the excess amount may be used by the manager for other purposes than those specified in the first paragraph.