S.C. Code Ann. § 9-8-110
(6) The Board may take such action as may be necessary to provide the death benefit under this section in the form of group life insurance upon a determination that to do so would guarantee a more favorable tax treatment of the benefit to beneficiaries to whom the benefit is payable.
Upon the death of a retired member on or after July 1, 1985, there must be paid to the designated beneficiary or beneficiaries, if living at the time of the retired member's death, otherwise to the retired member's estate, a death benefit of one thousand dollars if the retired member had ten years of creditable service but less than twenty years, two thousand dollars if the retired member had twenty years of creditable service but less than thirty, and three thousand dollars if the retired member had at least thirty years of creditable service at the time of retirement.