S.C. Code Ann. § 9-11-175
(B) Each member's entire benefit shall be distributed to the member, beginning no later than the required beginning date, over the member's lifetime or the joint lives of the member and a designated beneficiary, or over a period not extending beyond the member's life expectancy or the joint life expectancies of the member and a designated beneficiary. If a member fails to apply for retirement benefits by his required beginning date, the board will begin distributing the benefit as required by this chapter.
(1) For purposes of this section, the "required beginning date" is April first of the calendar year after the later of the following:
(D) If an active or inactive member dies before benefit payments have begun or are required to begin under subsection (B) of this section, any death benefits shall be distributed by December thirty-first of the calendar year that contains the fifth anniversary of the member's death. However, the five-year rule shall not apply to any death benefit that is payable to a member's designated beneficiary, if: