Apr 20th, 2020
9 mins

BFFF Letter to HSE has resulted in temporary measures to allow workers to use FFP2 masks/P2 (10 APF) rather than FFP3/P3 (20 APF) for food ingredient dusts where there are shortages of FFP3/P3 (20 APF)

  1. If dust masks (PPE) are necessary to assist in reducing exposure to flour dust to a level as low as is reasonably practicable (ALARP), HSE guidance is that it should have an assigned protection factor (APF) of at least 20 (e.g. FFP3, re-useable respirator with a P3 filter or a TH2/3 powered air respirator).


  1. HSE recognises however that the availability of PPE with an APF of 20 may be reduced due to COVID-19. Where an employer is anticipating that their supplies of PPE with an APF of at least 20 will be exhausted and they are unable to source another supply, then they must carry out a COSHH risk assessment.  This should identify the combination of additional dust exposure minimising measures in place to maintain adequate protection and ensure that the risk to workers is not increased by providing PPE with an APF of 10 (e.g. FFP2, re-useable respirator with a P2 filter).  The additional measures should include:


  • Using non-stick coatings on conveyor belts and greaseproof paper on trays instead of flouring the surfaces.
  • Using low-dust flours as a lubricant and for dusting.
  • Using flour improvers in paste or liquid form instead of powder to reduce the airborne dust generated when adding ingredients.
  • Separating the weighing and dispensing of flour and powdered ingredients from the remainder of the production area using enclosures to contain the flour dust within the enclosure to minimise flour dust spreading.
  • Using mixers with lids to contain the dust at the start of mixing cycles.
  • Using effective, adequately designed and maintained local exhaust ventilation for dusty tasks such as bulk flour sieving, dispensing, weighing, tipping powdered ingredients.
  • Ensuring all workers have been provided with information, instruction and training on careful flour handling techniques, including:
    • Safe working practices to minimise flour dust:
      • Ensuring ingredients in powder form are not tipped from a height into mixing bowls.
      • Minimising airborne dust when folding and disposing of empty bags i.e. rolling the bag from the bottom while tipping avoiding the need to flatten or fold empty bags.
      • Starting-up mixers on slow speed until wet and dry ingredients are combined.
    • Avoiding hand dusting; using a sieve / dredger with minimal drop height.
    • Using high efficiency industrial vacuum cleaners and avoid dry sweeping with a brush.
    • Not using compressed airlines for cleaning off dust from equipment.
  • Ensuring supervision to ensure all workers carry out the careful flour working techniques to minimise their exposure to flour dust, and they raise any concerns or defects immediately.

Note:  When sourcing alternative PPE and choosing; disposable, reusable or powered air respirators, a fit test is required for any tight-fitting PPE provided as a control measure unless you can source the same mask, in the same size, for which the worker has been fit tested before.  Inadequate fit can reduce the protection provided to the wearer.  Further guidance on fit-testing can be found at  Advice on undertaking face fit testing to avoid transmission of COVID-19 can be found at


Alternatively, devices such as loose-fitting powered helmets or hoods, which do not require face-fitting, could be selected for the affected workers.  Further information on these types of devices can be found in the guidance document HSG 53 (Respiratory protective equipment at work – A practical guide), available at the following link:


Complying with COSHH


  1. All control measures must be determined through risk assessment and applied to the extent where they are reasonably practicable. Exposed workers should wear the most practical PPE with the highest APF, necessary to control exposure to flour dust.  If PPE with an APF of at least 20 cannot be sourced, PPE with an APF of 10  used in a combination of the above measures may control exposure to ALARP, achieving compliance with Regulation 7 of COSHH.


Conserve the stocks of suitable PPE


  1. In order to optimise the stocks of suitable PPE, employers are encouraged to take steps which will help preserve them. These could include:


  • Only providing PPE to those workers who need it.
  • Issuing PPE specific to the level of risk for specific tasks i.e. use lower APF PPE, that of an APF of 10, where the level of personal flour dust exposure is lower.
  • Providing instruction on maximising the use life of all PPE, by ensuring adequate user checks, cleaning and storage.

Note:  This guidance will be temporary and limited to the duration of this COVID-19 crisis – HSE is responding to the current challenges faced by the baking industry, in respect of the potential for temporary unavailability of PPE used to protect workers from food ingredient dusts.






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