19-3-1204. Survivorship benefit elected by beneficiary. (1) A designated beneficiary eligible to receive a death payment may instead elect a survivorship benefit by filing a written application with the board, if all of the following conditions are met:

(a) the deceased member on behalf of whom the death benefit is payable had completed 5 years of membership service;

(b) the designated beneficiary is a natural person; and

(c) the designated beneficiary elects the survivorship benefit within 90 days of receipt of notice from the board that the designated beneficiary is eligible to receive the death payment.

(2) A designated beneficiary of a vested member may, by filing a written application with the board, elect to receive a survivorship benefit in lieu of a death payment.

(3) (a) If the designated beneficiary is a minor, the custodian designated in 19-2-803 may, on the minor's behalf, file a written application with the board.

(b) If an application is not filed on the minor's behalf and no payment has been made, the designated beneficiary may file a written application upon reaching the age of majority. For the purposes of this subsection (3)(b), the survivorship benefit provided for in 19-3-1205 must be calculated as if the member had died on the last day of the month before the month in which the application was filed.