English to Spanish Tech/Engineering Physics Laboratory

It was also noted that there are a few areas within the department that may possibly need to be roped off while chemicals are being used since they are not restricted enough for people walking past. The High Bay was one of those areas.
¿Podría ser zona en alto del laboratorio? Veo fotografías y me hago una idea de lo que es pero no encuentro el término exacto.

Gracias anticipadas.