www.heatingandventilating.net
no thicker than half the thickness of an average business card is the point at which grease extract ductwork systems should be cleaned TR19® Grease brought a radical change in status
from guidance to specification, bringing with it stricter obligations to comply with the law through the specification. Its introduction, understandably, was swiftly followed by a keen expectation by insurance companies for compliance to be observed and clearly documented, in order to ensure that buildings insurance would not be compromised. TR19® Grease was created by lifting out section 7 of the previous TR/19 and giving it status as a standalone specification. The remainder, TR19®, was also reissued without section 7 to provide guidance on the cleaning of mechanical ventilation ductwork. As you might expect, TR19® itself is now under review and will eventually be reissued as TR19® Air, likely later in 2022. Little did we know when TR19® Grease was launched that ventilation and indoor air quality were shortly to become such essential topics. The present pandemic has thrown the importance of clean indoor air sharply into focus. At the start of the coronavirus crisis, it was not entirely understood
Ductwork & ductwork cleaning
how coronavirus was transmitted. We now know that surface contamination is less indicated in transmitting the virus, which is largely airborne. Indoor air quality is therefore critical, as is clean ductwork and effective ventilation. The revision of TR19® and development of a new TR19® Air is now vitally important. We have, for example, seen far too many
Gary Nicholls, managing director of Swiftclean
“We have seen far too many instances of schools trying to provide fresh air by opening doors and windows regularly throughout the winter months, letting out heat and preventing constant ambient temperatures, also essential for effective learning.”
instances of schools trying to provide fresh air by opening doors and windows regularly throughout the winter months, letting out heat and preventing constant ambient temperatures, also essential for effective learning. Doubtless, there will be a push to provide more properties, particularly schools, with new ventilation systems, which will benefit future generations year-round, as well as helping to alleviate the current crisis. What will be vital is that we design, install and maintain these systems in accordance with TR19® Air principles. TR19® already contains most of this information, but we are constantly refining this on the basis of experience and expertise gained by the industry over many years. What we have all concluded is that the system must be easily accessible to facilitate ongoing cleaning, and therefore a healthy indoor atmosphere. Like TR19® Grease, TR19® Air will also no doubt
recommend using a cleaning provider registered with the BESCA Vent Hygiene Elite (VHE) scheme, using competent technicians trained to BESA recognised levels.
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February 2022
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