To comply with the requirement on air change or air purifier in catering premises under the Prevention and Control of Disease (Requirements and Directions) (Business and Premises) Regulation (Cap.599F), licensees of general restaurant, light refreshment restaurant, marine restaurant and factory canteen licences shall provide the following information in respect of their licensed food premises and upload the required certificate issued by a registered specialist contractor (ventilation works category) in Food and Environmental Hygiene Department's prescribed format listing the required information by 30 April 2021. List of licensed catering premises meeting the required air change per hour of at least 6 and/or those installed with air purifier(s) meeting the prescribed specifications will be published on FEHD website for public inspection.

Fields marked with an asterisk * are required.
*Food Business Licence No.:
*Licence Serial No.:
(printed on the upper right hand corner of the licence)
*Captcha:
Please enter the Captcha as shown below


Refresh
For your reference, according to the Food and Environmental Hygiene Department's record, the total areas of seating area(s) in respect of the above licensed food premises during the issue of the licence is m2.
*Please tick at least one item

I certify that the minimum air change per Hour (Fresh Air) (ACH) of the seating area(s) of the licensed premises above is 6 or above. The ACH is #:
and / or
I certify that the seating area(s) of the above premises have been installed with suitable number of the following air purifier meeting the prescribed specifications% and is(are) applied on-the-ground in a proper manner:
High-Efficiency Particulate Air Filter (HEPA) cum Ultraviolet-C (UV-C) device
High-Efficiency Particulate Air Filter (HEPA) device
Ultraviolet-C (UV-C) device

Submit Certificate:

  I submit herewith in pdf format (size not exceeding 5MB) a certificate issued by a registered specialist contractor (ventilation works category)* with their name, registration number and his/her signature showing the
  (i) size(s) of all seating area(s)@;
  (ii) height from floor to ceiling of seating area(s) (either using the actual storey height or the assumed storey height at 3 metres);
  (iii) capacity(ies) of outside fresh air supplied to seating area(s) by the ventilation system;
  (iv) calculated air change(s) per hour (fresh air) of all seating area(s)^ of the licensed premises above;
    and/or
  (v) installation of the suitable amount of air purifier (either High-Efficiency Particulate Air Filter (HEPA) cum Ultraviolet-C (UV-C) device or HEPA device or UV-C device) meeting the prescribed specifications.
 
Download Certificate Template Submit Certificate

Licensee Signature:




Air Change Calculator
(For reference purpose, you may estimate the air change of seating area in your licensed premises by entering the information required below)
Size of seating area the
ventilating system served@ (m2)
Height from floor to
ceiling of the seating area (m)
(either the actual storey height
or the assumed storey height
at 3 metres)
Capacity of fresh air supplied to
seating area (unit)
Air Change per
Hour (ACH)
Air Change Calculator
(For reference purpose, you may estimate the air change of seating area in your licensed premises by entering the information required below)
Size of seating area the ventilating system served@ (m2)
Height from floor to ceiling of the seating area (m)
(either the actual storey height or the assumed storey height at 3 metres)
Capacity of fresh air supplied to seating area (unit)
Air Change per Hour (ACH)

* Information of the registered contractor can be found at
https://www.bd.gov.hk/en/resources/online-tools/registers-search/registrationsearch.html
# Please enter the air change per hour (fresh air) of the seating area(s) of the licensed premises. In case there are more than one seating area in the licensed premises with fresh air supplied from different sets of ventilation systems, only the minimum air change (fresh air) should be inputted.
@ Size of seating area should normally be counted by deduction of all food rooms, store-rooms, offices, lavatories etc. from the floor area of the premises but including adjoining passages of seating area. However, for calculation ACH purpose, seating area using natural ventilation, such as outside seating area, should not be included.
^ In general, air change per hour (fresh air) of the seating area of a premises can be calculated as below:

Air Change per Hour (Fresh Air) = A ÷ (B × C)

A  :  Capacity of outside fresh air supplied to seating area by the ventilation system (m3/hr)
B  :  Size of seating area the ventilating system served (m2)
C  :  Height from floor to ceiling of the seating area (m)
% Device with High-Efficiency Particulate Arrestance Filter (HEPA) combined Ultraviolet-C (UV-C) or HEPA or UV-C air purification technology should be suitable for operation under supply voltage of 220V/50Hz and shall comply with Consumer Goods Safety Ordinance, Cap. 456, the Electrical Products (Safety) Regulation (the "Regulation") under the Electricity Ordinance, Cap. 406, Laws of Hong Kong.

Ultraviolet-C (UV-C) should have an optimal wavelength of 253.7 nanometers of UV-C spectrum, of which, the effective range should be ranging from 100 nm to 280nm. Design of the UV lamps shall comply with relevant safety standards, such as those listed by Underwriters Laboratories (UL) and tested to meet UL Standard 153:2014 - Standard for Portable Electric Luminaires, UL Standard 1598:2018 - Luminaires and UL Standard 1995:2015 - Heating and Cooling Equipment, or other equivalent international/national standards. To prevent eye and skin injuries, sources of UV-C should be shielded or encased inside the disinfection device.

The sources of UV-C must be conspicuously labelled with a warning attached to the housing of the sources. The warning sign should state: -
WARNING
DO NOT EXPOSE EYES AND SKIN TO ULTRA-VIOLET LIGHT
RAYS ARE HARMFUL TO UNPROTECTED EYES AND SKIN
警告
切勿讓眼睛及皮膚暴露於紫外光之下, 可引致損害

The minimum efficiency of HEPA in removing small particles of sizes larger than 0.3 micrometre from air shall be 99.97% and comply with the European Standard BS EN1822-1:2009 to BS EN 1822-5:2009 (EPA, HEPA and ULPA) or other equivalent international/national standards.

The nos. of device required in the seating area of the catering premises shall be in accordance with the seating layout and zoning and shall comply with pertaining instructions by the manufacturer on installation and designed coverage. Also, the devices shall be distributed evenly as reasonably as possible with respect to the seating layout and individual partitioned zone(s).

The device shall be regularly maintained as per the manufacturer's instruction. The HEPA filter shall be replaced regularly according to recommended interval by the manufacturer, or otherwise under general circumstances not less than 3 to 6 months, to maintain the filtration efficiency.