There was a spill of radioactive water at the Point Lepreau nuclear power plant in the reactor building which was evacuated for the first time.
Kathleen Duguay of NB Power says a small amount spilled when the reactor's moderator system was being filled with heavy water as part of the plan to restart the generating station.
The plant has been shut down for what has turned out to be a lengthy and costly refurbishment which is behind schedule and over budget.
