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Future Hazard Analysis in EN 12845 ‘Occupancy and Storage Classification’

Future Hazard Analysis in EN 12845 ‘Occupancy and Storage Classification’. Stuart Lloyd Principal Fire Protection Engineer Zurich Risk Engineering UK. Agenda. EN 12845 status The past & current hazard analysis Moving forward Non Storage Storage Special Hazards. Status.

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Future Hazard Analysis in EN 12845 ‘Occupancy and Storage Classification’

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  1. Future Hazard Analysis in EN 12845‘Occupancy and Storage Classification’ Stuart Lloyd Principal Fire Protection Engineer Zurich Risk Engineering UK

  2. Agenda • EN 12845 status • The past & current hazard analysis • Moving forward • Non Storage • Storage • Special Hazards

  3. Status • Current EN 12845 issued in 2009 • EN 12845:2004 +A2 • included amendments A1 and A2 • Next EN 12845 to be published end 2014 • EN 12845 Revision 1 (EN 12845:2014) • Future EN 12845 • EN 12845 Revision 2 • In development • focus of this presentation

  4. TYPE OF OCCUPANCY Non industrial where the amount and combustibilityof the contents is low Commercial and industrial Processing and handling mainly ordinary combustible materials unlikely todevelop intensely burning fires in the initial stages Goods storage - with abnormal fire loads likely to produce exceptionally intense fires with a high rate of heat release Process hazards - extra hazardous, likely to develop rapidly and intensely burning fires For example,someareas of:Hospitals Hotels Libraries Museums Nursing homes Office buildings Prisons Schools, Colleges, etc Attics basements boiler rooms kitchens laundries storage spaces workrooms Category of goodstype and height of storage Classification -High Hazard process hazard Classification -Ordinary Hazard Group III Classification -High Hazard high piled storage Classification -Ordinary HazardGroup I,II,III or IIIS (see table 3) Storage methods S1 to S8 Type S9 or S10 potable spirit stores Classification – Light Hazard Occupancy Classification Taken from BS 5306 part 2 1990 (UK)

  5. TYPE OF OCCUPANCY Commercial and industrial Non industrial (where the amount and combustibilityof the contents is low) Processing and handling mainly ordinary combustible materials unlikely todevelop intensely burning fires in the initial stages Goods storage - with abnormal fire loads likely to produce exceptionally intense fires with a high rate of heat release Process hazards - extra hazardous, likely to develop rapidly and intensely burning fires Attics basements boiler rooms kitchens laundries storage spaces* workrooms For example,someareas of:Hospitals Hotels Libraries Museums Nursing homes Prisons etc Category of goodstype and height of storage Classification -High Hazard process hazard Classification -High Hazard high piled storage Classification -Ordinary Hazard Group III, IV Classification -Ordinary HazardGroup I,II,III,IV Storage methods ST1 to ST6 Classification – Light Hazard Occupancy Classification (EN & CEA)Developed from text in standards (not illustrated) HHP 1,2,3,4 *Storage may be High Hazard due to storage height/block size 5

  6. EN 12845 Revision 2 - Simplification of Hazard Classes • Current (10 options) • Light Hazard (LH) • Ordinary Hazard (OH 1,2,3,4) • High Hazard Process (HHP 1,2,3,4) • High Hazard Storage • Future (5 options) • Fire Hazard 1 • Fire Hazard 2 • Fire Hazard 3 • Fire Hazard 4 • High Hazard Storage

  7. Future Density/Area for each FH • The most widely used density/areas have been adopted going forward

  8. Non Storage Occupancies

  9. Clearer GuidanceNon-manufacturing example • Some aspects based on construction • All aspects based on risk evaluation • Tables identify ‘typical risks’ associated with premise type

  10. Clearer Guidance Manufacturing example

  11. Storage Classification • Categories will be called HHS • Will include 5 Categories

  12. Storage – Categories of Goods • Category I and II • will remain unchanged and be called HHS 1 and HHS 2 • Category III and IV are being evaluated • will be split into three groups HHS 3, HHS 4 and HHS 5 • HHS 3 - Cartoned Unexpanded Plastics (laptop in box) • HHS 4 – Uncartoned Unexpanded Plastics (garden chair) • HHS 4 – Cartoned Expanded Plastics (pillows in box) • HHS 5 – Uncartoned Expanded Plastics (sheets of polystyrene) • You should think of HHS 4 as Category 3.5 • New designations will accommodate protection by proven protection schemes such as CMSA from USA

  13. Special Hazards • Intended to include specific design solutions • Tyre storage • Aerosols • Hanging garments • Etc….

  14. Future Flow Chart

  15. Thank You, Any Questions?

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