Hazardous Area Classification Made Easy
Standards-based zone classification and safety calculation tools for engineers and safety professionals.
Substance data sources: ISO/IEC 80079-20-1:2017 · PubChem · NIST WebBook
Available modules
Gas & Vapour Zone Classification
Full implementation of the IEC 60079-10-1:2020 procedure: release rate (Annex B), ventilation assessment (Annex C + EN 16798-7), dilution chart (Figure C.1), zone type (Table D.1), and zone extent (Figure D.1).
Inerting — Explosion Prevention
Swing inerting (pressure and vacuum) and flow-through purging calculations per CEN/TR 15281:2022 Annexes A and B. Determines the number of inerting cycles or purging time/flow required to reach a target O₂ concentration.
Battery Rooms — Stationary Batteries
Ventilation flow rate, natural ventilation opening area and safety distance for rooms containing stationary secondary batteries (lead-acid vented, VRLA, NiCd). Includes adequacy check against existing extraction capacity and Section 9.2 attention items.
Traction Battery Charging Areas
Minimum ventilation flow rate, natural ventilation opening area, free volume adequacy check and fixed safety distance for forklift and traction battery charging areas (lead-acid, VRLA, NiCd). Covers regulated and unregulated chargers; simultaneous charging of multiple vehicles.
Spray Booth Classification
Hazardous area classification for spray application equipment and spray booths per EN 16985:2018 Annex C. Covers liquid (multi-solvent), powder, water-based product booths and post-spray purge time calculation.
Dryers & Ovens — Flammable Substances
Safety ventilation calculations for Type A dryers and ovens per EN 1539:2015 Annex A. Covers chamber dryers (Method A) and continuous flow dryers. Assessment, design Q and design load modes; Table 2 safety requirements per operating range.