It is expected that all parts will be returned in good working order. Failure to return working parts may result in withheld marks at the end of the term, as covered by Section 23.9.10 of the University of Alberta Calendar:

23.9.10 Overdue Accounts: Withholding of University documents and Denial of Registration
In any case where a student has neglected or refused to pay amounts owed to the University, the Registrar has been empowered and directed by the Board of Governors to deny or terminate registration and withhold their official transcript and/or degree parchment, until the student has settled the account with the University or has made arrangements satisfactory to the University to do so. For example, the degree parchment, or official transcript, may be withheld or registration denied if the student owes the University for library penalties or fines; for purchases at the University Bookstore; for parking or traffic violations; for breakage or damage to laboratory facilities or supplies; for student fees and University of Alberta Emergency Student Loans; for room and board fees; for fees for reexamination or deferred final examinations; or for fines imposed by the Discipline Officer or the University Appeal Board...