A personal leave of absence in excess of six (6) days may be granted at the request of the member of the bargaining unit upon the approval of the City. Leaves of absence for six (6) consecutive days or less may be granted and need not be covered by a formal leave of absence. Requests for such leaves shall be in writing and submitted at least seven (7) days prior to its start whenever practicable. If it becomes necessary for a member to request a short term emergency leave during a scheduled tour of duty, such member shall be allowed to complete his tour of duty upon conclusion of said emergency.