In the event that any judge of any court is unavailable after attack to exercise the powers and discharge the duties of his office, and in the event no other judge authorized to act in the event of absence, disability or vacancy or no special judge appointed in accordance with the provisions of the Constitution or statutes is available to exercise the powers and discharge the duties of such office, the duties of the office shall be discharged and the powers exercised by the special emergency judges hereinafter provided for:
All such appointees shall possess all the qualifications required by the Constitution and statutes of this Commonwealth.
Said special emergency judges shall discharge the duties and exercise the powers of such office only until such time as a vacancy which may exist shall be filled in accordance with the Constitution and statutes, or until the regular judge or one preceding the designee in the order of succession becomes available to exercise the powers and discharge the duties of the office.
71 P.S. § 779.8