# The Control of Substances Hazardous to Health Regulations 1994, Part II: CONTAINMENT MEASURES FOR HEALTH AND VETERINARY CARE FACILITIES, LABORATORIES AND ANIMAL ROOMS


Containment measures
Containment levels
2
3
4
Note:
“Class III cabinet” means a safety cabinet defined as such in BritishStandard 5726: Part I: 1992, or unit offering an equivalent level of operator protection as defined in British Standard 5726: Part I: 1992.
1 The workplace is to be separated from any other activities in the same building.
No
Yes
Yes
2 Input air and extract air to the workplace are to be filtered using HEPA or equivalent.
No
Yes, on extract air
Yes, on input and double on extract air
3 Access is to be restricted to authorised persons only.
Yes
Yes
Yes, via air-lock key procedure
4 The workplace is to be sealable to permit disinfection.
No
Yes
Yes
5 Specified disinfection procedures.
Yes
Yes
Yes
6 The workplace is to be maintained at an air pressure negative to atmosphere.
No, unless mechanically ventilated
Yes
Yes
7 Efficient vector control e.g. rodents and insects.
Yes, for animal containment
Yes, for animal containment
Yes
8 Surfaces impervious to water and easy to clean.
Yes, for bench
Yes, for bench and floor (and walls for animal containment)
Yes, for bench, floor, walls and ceiling
9 Surfaces resistant to acids, alkalis, solvents, disinfectants.
Yes, for bench
Yes, for bench and floor (and walls for animal containment)
Yes, for bench, floor, walls and ceiling
10 Safe storage of biological agents.
Yes
Yes
Yes, secure storage
11 An observation window, or alternative, is to be present, so that occupants can be seen.
No
Yes
Yes
12 A laboratory is to contain its own equipment.
No
Yes, so far as is reasonably practicable
Yes
13 Infected material, including any animal, is to be handled in a safety cabinet or isolator or other suitable containment.
Yes, where aerosol produced
Yes, where aerosol produced
Yes (Class III cabinet)
14 Incinerator for disposal of animal carcases.
Accessible
Accessible
Yes, on site

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Source: https://www.legislation.gov.uk/uksi/1994/3246/schedule/9/part/II (the official version)
Page: https://openlegislation.uk/control-of-substances-hazardous-to-health-regulations-1994/schedule-9/part-II
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.