They seem to have such standards in England and America, but I found no standards for South Africa. Our conditions in South Africa are not the same as in Europe. We have been in this business for 18 years and never had a hygiene or compliance problem, however one company wants to know and to follow the South African specifications.
We can not work to European standards. It seems that they now want to impose their standards on us.
USA ventilation standards
From Kevin A. Renton, senior occupational hygienist, National Institute for Occupational Health, and honorary lecturer, School of Public Health, University of the Witwatersrand; There are to my knowledge no kitchen ventilation standards specific to South Africa. However there is little difference between American and South African conditions.
I have three design specs from the American Conference of Governmental Hygienists from 1995. The measurements are unfortunately in imperial units.
An air conditioning engineer, Martin Braun, has access to a more recent edition of the same guidance, on email@example.com or +27 (0)12 345 4061.
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Kitchen venting contacts
Catervent R Hunter firstname.lastname@example.org 011 683 9033
Mine Ventilation Soc 4827959 email@example.com
NIOH NHLS firstname.lastname@example.org +27(0)11 712 6479
SABS F&B ISO 22000 012 428 6017 email@example.com
Turbo Vent 011 613 6921 firstname.lastname@example.org
Vent engineer Martin Braun email@example.com +27 (0)12 345 4061
PHOTO; Part of one of the three USA design standards.