What's new
On September 18, 2026, the UK Fire Industry Association (FIA) announced the 2026 Code of Practice for Aspirating Smoke Detection (ASD) Systems. It is the first full revision of that guidance since 2012. The document is aimed at designers, installers, commissioning personnel, and maintainers of air-sampling detection systems.
The FIA specifically calls out expanded recommendations for high-rack warehouse protection, informed by research and a new warehouse-design/risk-assessment spreadsheet. It also addresses high-airflow environments, testing methods for challenging applications, lift installations, pipework flammability, in-cabinet detection, multi-sensor options, and the use of coincidence and redundancy concepts.
Why a VESDA technician should care
In an aspirating system, the detector, fan or aspirator, pipe length, sampling holes, airflow, and transport time all affect the result. A warehouse or high-airflow application is not solved merely by setting a lower alarm threshold. Air movement, storage configuration, sampling location, and verification at the sampling points matter.
The revised guidance is a timely reminder to save the approved pipe-network design, baseline airflow and alarm settings, commissioning results, and the sampling-point test method. Those records become especially valuable after racking changes, ductwork modifications, ceiling work, or repeated nuisance/alarm-trouble complaints.
Field checks worth revisiting
- Warehouse conditions: compare the current rack height, aisles, storage arrangement, and airflow with the original design assumptions.
- Pipe-network integrity: inspect supports, branches, caps, sampling holes, blockages, and unauthorized pipe alterations before blaming the detection chamber.
- Flow and transport: review manufacturer diagnostic values and confirm that a changed pipe network has not invalidated the approved transport-time calculation.
- Commissioning test: use the manufacturer-approved test procedure and project criteria, including representative sampling points; a test only at the detector cabinet may miss a pipe problem.
- Documentation: capture as-left detector configuration, filter/aspirator condition, test results, and any changes requiring design review.
The FIA document is UK industry guidance, not a newly adopted U.S. code requirement or an automatic revision to NFPA 72. For U.S. installations, use the adopted codes, approved plans, manufacturer instructions, and AHJ requirements. Treat the FIA update as an additional technical reference.
Related FireAlarmGuy resource
VESDA and Aspirating Smoke Detection: Field Basics →
Original source
Fire Industry Association — 2026 ASD Code of Practice announcement (Sept. 18, 2026) ↗
FireAlarmGuy analysis published October 11, 2026. This is an original practical summary of the FIA announcement, not a reproduction of its code of practice.