W. K. Lis
Superstar
From link.
The TTC has implemented various health and safety measures throughout the pandemic, and will continue to do so in accordance with public health guidance.
The TTC has implemented various health and safety measures throughout the pandemic, and will continue to do so in accordance with public health guidance.
HVAC Photocatalytic Oxidation pilot testing is currently being finalized on the TTC’s streetcar fleet. In-service efficacy test results and peer agency data from similar pilots are still pending for this technology.
As part of the TTC’s efforts to mitigate airborne transmission, TTC staff have also commenced upgrades to the vehicle filter systems. The goal is to upgrade to MERV 13 filters, which are currently recommended by professional organizations, such as American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE), for reducing airborne aerosol exposure to COVID-19. Typically, transit vehicles are designed to use HVAC filters in the range of MERV 5 to MERV 8. Table 2, shown below, details the status of filter upgrades for each mode.
Pilot testing to upgrade the Wheel-Trans bus fleet with a standalone filtration device that accommodates the vehicle’s compact HVAC design, is ongoing and is targeted for completion in Q3 2021
With respect to surface disinfection, the TTC continues to follow guidelines established by the Province of Ontario and is disinfecting vehicles twice daily while evaluating other available surface treatments.
As a pilot, the TTC has engaged a third party supplier to investigate the use of copper coating material as a means for surface treatment for COVID-19. Phase 1 testing has already been completed between this vendor and Vancouver’s Translink agency. Phase 2 testing is scheduled to commence in July with the inclusion of TTC’s subway fleet.