From the Netherlands: Guidance Optimal Ventilation at Schools - Version February 2022
Translated using Google Translate:
CO2 measurement with a carbon dioxide (CO2) meter for a first indication of air quality. Measuring the CO2 concentration is preferably carried out in a teaching space with full occupancy (30+1). An optimal one CO2 concentration is below 800ppm. Strive to improve the CO2 concentration in any case below the limit value of 1200ppm (new construction below 950ppm).
Introduction
An optimal indoor climate is important for the well-being of students and educational staff
in the school. In addition, learning performance is better in a well-ventilated teaching space
attendees are less exposed to indoor environmental factors that are detrimental to their health.
Good ventilation does not happen automatically, with most ventilation systems you have to do it yourself. This abbreviated guide provides teachers, students, building managers and other stakeholders with tips and advice for optimal functioning of the available facilities.
Ventilation and COVID-19
The RIVM states in the LCI guideline Ventilation and COVID-19 that good ventilation and effective air purifiers can reduce the presence of virus particles in the air, but that is still the case.
It is not sufficiently known to what extent this actually results in demonstrably less spread COVID-19 leads. Modeling studies and some epidemiological studies do suggest that insufficient ventilation could lead to aerogenous transmission and that sufficient ventilation can prevent or limit the risk of aerogenous transmission.
For the complete guideline, see the RIVM LCI Guideline on Ventilation and COVID-19 (version June 3, 2021).
Good ventilation at school, supplying fresh outside air and removing polluted air indoor air, remains important to reduce the presence of indoor environmental factors that are detrimental to health in the indoor air. Ventilation is part of the complete set measures to limit the spread of COVID-19 and does not replace the others measures that apply to education. See the protocols for the current list of measures of the sectors.
The Optimal Ventilation in Schools guide helps schools, school boards and employees municipalities that deal with educational housing to achieve optimal results step by step ventilated schools.
To read more click on this link: https://www.ruimte-ok.nl/sites/default/files/2022-02/Handreiking_Optimaal%20Ventileren%20op%20Scholen.pdf
