The statute provides that governmental entities are not liable for their torts except as provided in the statute. The act states, "Except as may be otherwise provided in this chapter, all governmental entities shall be immune from suit for any injury which may result from the activities of such governmental entities wherein such governmental entities are engaged in the exercise and discharge of any of their functions, governmental or proprietary. ... When immunity is removed by this chapter, any claim for damages must be brought in strict compliance with the terms of this chapter". T.C.A. § 29-20-201.