; or (II) temporarily house an inmate pending transfer, pending classification, or pending resolution of another temporary administrative matter; and (ii) to a duration of not more than 15 consecutive days, and not more than 20 days in a 60-day period, unless— (I) the inmate requests to remain in administrative segregation under paragraph (3)(D)(i); or (II) in order to address the continued existence of a substantial and immediate threat, a multidisciplinary staff committee approves a temporary extension, which— (aa) may not be longer than 15 days; and (bb) shall be reviewed by the multidisciplinary staff committee every 3 days during the period of the extension, in order to confirm the continued existence of the substantial and immediate threat; (B) limit disciplinary segregation— (i) to situations in which such segregation is necessary to punish an inmate who has been found to have committed a significant and serious disciplinary infraction by a Disciplinary Hearing Officer and alternative sanctions would not adequately regulate the behavior of the inmate; and (ii) to a duration of not more than 30 consecutive days, and not more than 40 days in a 60-day period, unless a multidisciplinary staff committee, in consultation with the Disciplinary Hearing Officer who presided over the inmate’s disciplinary hearing, determines that the significant and serious disciplinary infraction of which the inmate was found guilty is of such an egregious and violent nature that a longer sanction is appropriate and approves a longer sanction, which— (I) may be not more than 60 days in a special housing unit if the inmate has never before been found guilty of a similar significant and serious disciplinary infraction; or (II) may be not more than 90 days in a special housing unit if the inmate has previously been found guilty of a similar significant and serious disciplinary infraction