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. 2017 May 31;5:121. doi: 10.3389/fpubh.2017.00121

Table 1.

Minimum containment level 3 (CL-3) facility verification requirements (http://www.emerge.rki.eu/Emerge/EN/Content/Topics/Rules/ECL_Biorisk.pdf?__blob=publicationFile).

Minimum facility verification requirements (annual or regular control) Critical equipment that should be operational and regularly test in case of power failure Changes for which retesting may be required
Differential pressure Primary or secondary containment Replacement of CL-3 fans, duct, air valves
Air flow Communication system Replacement or repair of control wiring
Air flow turnover Access security systems and limitations Changes in building control sequences
High-efficiency particulate air filter certified (photometric control filters in the extraction) Respirators, space suits Structural changes
Environmental parameters (noise, temperature, humidity, lighting) Sensors, alarms Frequent failures of HVAC system/inoperable HVAC alarms
Supply exhaust interlocking system failure/reversals of airflow under normal conditions
Autoclaves and other pressure vessels
Standby power and UPS systems
Operation of interlocking doors
Operation of decontamination systems (e.g., autoclaves, fumigation chambers, liquid effluent)
Liquid effluent treatment systems
Battery driven emergency lights