S.C. Code § 24-21-610
In all cases cognizable under this chapter the Board may, upon ten days' written notice to the solicitor and judge who participated in the trial of any prisoner, parole a prisoner convicted of a crime and imprisoned in the state penitentiary, in any jail, or upon the public works of any county who if:
If after January 1, 1984, the Board finds that the statewide case classification system provided for in Chapter 23 of this title has been implemented, that an intensive supervision program for parolees who require more than average supervision has been implemented, that a system for the periodic review of all parole cases in order to assess the adequacy of supervisory controls and of parolee participation in rehabilitative programs has been implemented, and that a system of contracted rehabilitative services for parolees is being furnished by public and private agencies, then in all cases cognizable under this chapter the Board may, upon ten days' written notice to the solicitor and judge who participated in the trial of any prisoner, to the victim or victims, if any, of the crime, and to the sheriff of the county where the prisoner resides or will reside, parole a prisoner who if sentenced for a violent crime as defined in Section 16-1-60, has served at least one-third of the term or the mandatory minimum portion of sentence, whichever is longer. For any other crime the prisoner shall have served at least one-fourth of the term of a sentence or if sentenced to life imprisonment or imprisonment for any period in excess of forty years, has served at least ten years.
The provisions of this section do not affect the parole ineligibility provisions for murder, armed robbery, and drug trafficking as set forth respectively in Sections 16-3-20 and 16-11-330, and subsection (e) of Section 44-53-370.
In computing parole eligibility, no deduction of time may be allowed in any case for good behavior, but after June 30, 1981, there must be deductions of time in all cases for earned work credits, notwithstanding the provisions of Sections 16-3-20, 16-11-330, and 24-13-230.
Notwithstanding the provisions of this section, the Board may parole any prisoner not sooner than one year prior to the prescribed date of parole eligibility when, based on medical information furnished to it, the Board determines that the physical condition of the prisoner concerned is so serious that he would not be reasonably expected to live for more than one year. Notwithstanding any other provision of this section or of law, no prisoner who has served a total of ten consecutive years or more in prison may be paroled until the Board has first received a report as to his mental condition and his ability to adjust to life outside the prison from a duly qualified psychiatrist or psychologist.
S.C. Code § 24-21-610