The purpose of this page is to provide further information regarding the
provision of Class F cover in accordance with the recommendations of
BS 5306-8:2000. Readers are referred to
the British Standard itself for full details and reminded that this is a summary
only.
Throughout, references to the pertinent parts of the British Standards and/or
other legislation have been included as
footnotes.
- All deep fat frying situations should be covered by either Class F
extinguishers1 or a fixed system (as set
out below):
| Class F Risk |
Cover Required2 |
| Surface area not in excess of 0.11m² |
One 75F extinguisher |
| Surface area not in excess of 0.4m² |
Two 75F extinguishers |
| Surface area in excess of 0.4m² |
Fixed system is required |
Please note that 0.11m² = 1 sq ft, or a rectangular area
0.3×0.36m (or 30×36cm, 12"×14"), or a circular area of diameter 0.37m (or 37cm,
14½").
The larger area, 0.4m² = 4sq ft, or a rectangular area 0.3×1.33m (or 30×133cm,
1'×4'), or a circular area of diameter 0.71m (or 71cm, 28").
- For fats & cooking oil hazards other than deep fat frying situations, other
methods (e.g. fire blankets) may be suitable alternatives where the situation
warrants. In such cases, the reader is referred to the applicable British
Standards and the manufacturers instructions for those other methods. In all
other case, class F extinguishers or a fixed system should be provided as
above3.
- Due to the multiplicity of hazards generally present in kitchens, class F
extinguishers should be supplied that are also capable of dealing with class A
hazards. In such cases, the size of the extinguisher should be decided by the
larger of the class A and class F requirements3.
Unfortunately, the British Standards are covered by copyright and are not
available freely. However, these can be purchased at
British Standard Online or alternatively, some libraries may carry copies of
the more common standards.
- As per BS 5306: Part 8: 2000, clauses 5.4 and
clause 6.8, Table 2.
- Ratings of 5F, 15F and 25F are discussed in the
full table. These are not available to us and so not included here. The reader
is referred to the Standard for full details.
- As per BS 5306: Part 8: 2000, clause 6.8.
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