So this job is for a nuclear power plant operations position.

I found out that it's fine for me to have depression and be treated for it as long as the meds won't affect my ability to do the job. They will have me see a clinical psychologist whether I disclose the meds or not. The psychologist should clear me to be "fit for duty".

I'm still kind of apprehensive about telling them though.

Just curious, why guess that I'm introverted with an active imagination?