School Outdoor Learning provide resources, training and solutions to enable schools to fully engage with and utilise their outdoor environments.
How to Light
and Use Fire Safely
Lighting, using and enjoying fire is a fundamental part
of being in an outdoor environment whether it be for warmth, cooking on or simply enjoying during
discussion, storytelling and review of activities. It can also form a valuable part of science based teaching and
learning for pupils of all ages.
We recommend you locate a site and spend time designing
and installing a safe environment for lighting fires together with a set of
guidelines for effective and safe practice for pupils and staff. The following
document is designed as a sample but can be tailored to your school site and
the activities you may be doing with your pupils. Spend time modifying this to
produce your own version.
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Safety
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Spend time designing and building a safe enclosure for your fire that
will protect children from being harmed and any fire spreading or hot items escaping.
We recommend a proper stone or log circle that will act as a barrier to any
spread.
Tie back or tuck in any loose hair or clothing before lighting.
Ensure that you are not wearing any flammable clothing (plastic or
nylons) before you light it.
You should have the following items easy to hand near to the fire:
·
Emergency bucket of water
·
First aid kit – including cooling gels and
dressings for applying to any burns
·
Fire blanket – to smother an out of control
fire or a person on fire
·
A bucket of sand for extinguishing or cooling
down or suppressing the fire
If you are in an area where the ground is porous and dry there could
be a risk of ground fire and the fire spreading underground to tree roots and
other plants. If this is the case, consider placing paving slabs or aggregate
in the base of the fire pit/circle to insulate against the heat.
A cauldron or other portable metal container can also be a safe, low
cost and versatile means of creating fire outdoors.
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The Science of Fire
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The ‘Fire Triangle’ clearly shows the
elements required to make a fire ignite and burn – Heat, Fuel and Oxygen.
Heat – the energy provided
by ignition from a spark, flame or friction.
Fuel – material for
burning such as paper, card, wood, coal or charcoal which supplies energy.
Oxygen – usually provided
naturally from the air. More oxygen can be injected to feed the fire by
blowing carefully in to the base or fanning gently.
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Lighting
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The following steps, if followed, will result in a successfully lit
fire – good for you and your students!
1. Place
tinder at the bottom on the fire base. Items such as dried leaves or grass,
birch bark, thin dead wood, pine needles, wood shavings etc. You can also use
man made products such as paper, cloth, cotton wool, newspaper. Fluff up the
tinder to allow plenty of air into it.
2. Onto
this place kindling (small sticks or thin sections of wood) in a
tripod/pyramid shape above the tinder so that it forms a small
self-supporting structure.
3. Build
up with slightly larger sections of kindling – but still quite thin sticks
(the width of your little finger) at this stage. Beyond this sections of
slightly larger kindling and bark in long strips can work well.
4. Light
the tinder and allow it to alight the kindling. Gradually add larger kindling
and ensure that it is burning well before you add fuel such as logs and
larger sticks. Either add in a tripod configuration or lay logs in parallel
with separate layers at right angles to each other to create space for air to
move and aid the burning process.
5. Add
fuel as required. Do this from a low position and to the side of the fire.
Ensure that all materials are as dry as they can be to prevent too much smoke
being created.
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Extinguishing
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Removing any one or more of the 3 elements from the fire triangle
will extinguish the fire.
·
Fuel can be removed by allowing it to be
consumed or removing manually using tongs. Spreading out the embers can also
be effective in reducing the heat.
·
Heat can be removed by dousing with water
which creates steam. Be careful to do this gently as it can have an explosive
effect, particularly if added too quickly. Do not pour water onto hot stones
around the fire as this can cause them to shatter or explode.
·
Oxygen can be removed by smothering or
enclosing the fire using sand or a fire blanket.
To prevent re-ignition, you will ideally stay with the fire until it
has burned out. If this is not possible then spread out the hot embers as
much as possible and use plenty of water pouring from the outside towards the
centre. Scrape hot embers off logs with a poker or tongs. Poke holes in the
ground with a stick to allow the water to penetrate the hot ground.
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Useful Hints and Tips
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Preparation
Spend time collecting lots of good dry tinder and kindling. Spend
time drying out all your materials if required for a few days before hand.
Standing dead wood (i.e. the dead small branches from nearby trees) is useful
as it is often dryer than dead wood found at ground level.
Adding Oxygen
It’s often useful to add in more oxygen. This can be done in quite a
controlled way by blowing gently into the base of the fire. Do this from an
upwind position and ensure that all loose hair and clothing is tucked in
first. The alternative is to use a flat piece of wood or card (the size of a
dinner plate at least) to gently fan the flames to create added oxygen.
Floating Embers
Be careful about small embers that can leave the fire and travel to
land on people or other flammable objects and ignite them. Paper used to
light the fire is often a cause of this hazard so ensure that it is scrunched
up tightly before using as fuel.
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