# Changes of use and protection decisions

Lesson 2 of [Manage backflow repairs and property records](https://backflowtesters.fyi/academy/manage-backflow-repairs-and-records.md), 12 minutes.

Treat a change as a new question A previously tested assembly does not tell you whether every future use is covered by the same protection decision. Seattle states that the required backflow protection is determined by the hazard and that its cross-connection control specialists determine the type f…

The rest of this lesson is for learners enrolled in the course. [See how Manage backflow repairs and property records works](https://backflowtesters.fyi/academy/manage-backflow-repairs-and-records.md).

Also on the [web page](https://backflowtesters.fyi/academy/manage-backflow-repairs-and-records/changes-of-use-and-protection).