Whenever in the course of a trial testimony is taken of a juror or other person as to alleged misconduct of a juror, or as to tampering with or an attempt to tamper with a juror, such testimony shall become a part of the record of the case. Such testimony shall be taken out of the hearing of the jury. Jurors may be interrogated in regard to such alleged misconduct or attempted tampering.
231 Pa. Code r. 228