BSC's located away from doors, heavily traveled areas, etc, to maintain air flow. Exhaust not recirculated. Class II BSC certified annually. If BSC discharged to outside must have system to prevent positive pressurization. Eyewash readily available.
Illumination is adequate, avoiding glares and reflections impeding vision.
BSL3 facility and operational procedures documented. Facility tested for verification prior to operation. Facilities re-verified, at least annually against these procedures.