• Loss Prevention Standard (OFF to remove from print out)

Spray Dryer Checklist

  • 1. Product Testing Complete?
    • Layer Ignition Temperature?
    • Minimum Ignition Temperature?
    • Minimum Ignition Energy?
    • Minimum Explosive Concentration?
    • Critical Thickness for SeliIgnition?
    • Kst?
    • Pmax?

  • 2. Process Isolation - Spray Dryingoperations within its own discreet processing area separated from other parts of the factory by a 2hr fire wall or a separation distance of 25m?

  • 3. Mr Inlets? - Adequate filtration of inlet air?

  • 4. Mr Heating?
    • Direct air heating avoided?
    • Flame/spark arrestors on inlet air?

  • 5. Atomisers?
    • Vibration monitoring on centrifugal disc atomisers?
    • Safe trajectories for pressurised jet atomisers defined and plant configured to ensure unsafe trajectories cannot be set?

  • 5. Atomisers?
    • Vibration monitoring on centrifugal disc atomisers?
    • Safe trajectories for pressurised jet atomisers defined and plant configured to ensure unsafe trajectories cannot be set?

  • 6. Dust Extraction Equipment?
    • Externally sited or in a separate fire compartment?
    • Explosion relief adequate?
    • Fire detection equipment installed?
    • Sprinkler or deluge system fitted?

  • 7. Fans
    • Vibration monitoring fitted?
    • Safe access for inspection/cleaning provided?

  • 8. Fines Return
    Downward trajectory or other measures to prevent accumulation on return line?

  • 9. Adequate measures to prevent accumulation/build-up of powder?

  • 10. Temperaturecontrol?
    • Temperatures continuously monitored within the various zones within the plant?
    • High temperature alarm?
    • Very High temperature shut down fitted that shuts down the product feed, inlet air and sifter?

  • 11. DSEAR & Suitable Electrical Equipment
    • DSEAR Assessment completed?
    • Electrical equipment suitable for use in hazardous atmospheres?
    • Equipment with appropriate T Class installed?
    • Suitably IP rated equipment specified?

  • 12. Earthing & Lighting Protection system
    • All items of plant and all components must be connected to each other and to earth by a low resistance electrical path?
    • Earth continuity checked and confirmed as part of routine plant maintenance?
    • Building features lightning protection system?
    • Lighting protection system inspected and tested on at least an annual basis?

  • 13 Flexible Hoses
    Hoses are ATEX rated and also will not burst at pressures below that of explosion relief mechanisms?

  • 14 Automatic Fire Detection
    • Factory area protected by a suitable automatic fire detection system that meets BS 5839 pt 1 -P1.
    • Spray dryer protected by Carbon Monoxide detection?
    • Spray dryer protected by spark detection?

  • 15 Fire Fighting Systems
    • The spray dryer, extract ducts, fluid bed dryer, cyclones and bag filters (if fitted) are protected by a suitably designed fixed fire protection system?
    • There are suitable processes in place for the inspection, maintenance and testing of these systems?

  • 16 Explosion Relief / Containment
    Process plant designed to eithercontain the pressure of an explosion or safely relieve the pressure to a safe location?

  • 17 Explosion Suppression
    A suitable explosion suppression system is installed within the spray dryer and associated ductwork?

  • 18 Explosion Propagation
    There are suitable measures to prevent propagation of an explosion through the process plant?

  • 19 Safe start-up/shut down procedures are established?

  • 20 Adequate programmes of plant maintenance established?

  • 21 Adequate programmes of plant cleaning operate including high level areas?

  • 22 There are no/few fugitive dust emissions from the process?

  • 23 Hot works are managed in accordance with Aviva's Loss Prevention Standard?

  • 24 There are appropriate programmes of operator training?

  • 25 Safe procedures for dealing with blockages?

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