High Efficiency Particulate Absorbing (HEPA) Air Filter Elements

<p>As part of this market sounding exercise, TfL wishes to seek your views on the extent of your capabilities to supply HEPA Air filters which could replace the current&nbsp; Air Filters used within the HVAC system meeting the technical requirements described in section 5 relating to essential performance characteristics of both initial and discharged efficiency, air flow resistance, test dust capacity and arrestance.</p>
<p>TfL may also require a filter element to be assessed/tested in the future to ascertain the dust holding capacity of current filters in use the S-Stock fleet of 192 trains. This is a valuable preventative maintenance measures to identify an optimum operation of the HVAC system with the potential to optimise the maintenance regime. Therefore, a supplier services may be required to perform this assessment at predetermine or regular intervals if needed.</p>
<p>If you wish to participate in this marketing sounding questionnaire please follow the instructions in the attached document.&nbsp;&nbsp;</p>