A new British Standard for cleanliness in newly installed ductwork ‘marks the end of a potentially damaging source of confusion’, specialist in ductwork contracting, System Hygienics, says. The company says BS EN 15780:2011 Ventilation for buildings – Ductwork – Cleanliness of ventilation systems, ‘clearly defines, for the first time, what is considered acceptably clean’.
System Hygienics said: “With standardised cleanliness levels stated according to the building use, specifiers, installers, and facilities managers, now have clear guidance, a published set of standards, and a new vacuum test applicable to both circular, and rectangular, ductwork. Darren Ling, a director, said: “The new British Standard has newly defined limits set against trigger levels for cleaning these types of systems for existing ductwork, which differ from the current guidelines set out in the Heating and Ventilating Contractors Association’s TR/19 Guide to Good Practice Cleanliness of Ventilation Systems.” Gareth Keller, HVCA head of specialist group services, however, added: “The HVCA is currently revising TR19 to incorporate this new British Standard. The revision will include the new vacuum test method, and clarify the situation regarding newly installed ductwork.”
