5. a. An inmate shall not be placed in isolated confinement pending investigation of a disciplinary offense unless:
(1) the inmate's presence in the general population poses a danger to the inmate, staff, other inmates, or the public. In making this determination, the facility administrator shall consider the seriousness of the alleged offense, including whether the offense involved violence or escape or posed a threat to institutional safety by encouraging others to engage in misconduct; or
(2) the facility administrator has granted approval in an emergency situation.
b. An inmate's placement in isolated confinement pending investigation of a disciplinary offense shall be reviewed within 24 hours by a supervisory employee who was not involved in the initial placement decision.