SECTION 1. Chapter 127 of the General Laws, as appearing in the 2012 Official Edition, is hereby amended by inserting after section 41, the following section: --

Section 41B. Time of sentence while in confinement to isolation: Any prisoner in any correctional institution of the commonwealth or in any house of correction or jail, who after a disciplinary hearing is ordered to serve a sanction in disciplinary detention for disciplinary reasons, shall not have any day or part of a day served in disciplinary detention confinement deducted from their sentence. Time served in disciplinary detention shall be recorded by the superintendent in accordance with Section 4 of this Chapter.  A prisoner shall have the right to appeal their confinement through established institutional means and the court system.  The commissioner or any sheriff or their designee may restore such forfeited days after an inmate’s release from disciplinary or administrative segregation if the inmate shows improvement in behavior and/or takes part in educational, substance abuse and other such programming and remains discipline free.    This section shall not apply to any prisoner who is placed in segregation for nondisciplinary or for protective purposes.