Preventing and Controlling Fires at Compost and Mulch Sites
Transcript of Preventing and Controlling Fires at Compost and Mulch Sites
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Preventing and Controlling Fires
at Compost and Mulch Sites
SWANA
WASTECON 2015
August 26, 2014
Risa Weinberger & Associates, Inc.
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The first step in
preventing fires at
compost and mulch sites
is…
Be legit!
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These are legitimate operations.
•Active
•Product sales
•Managed
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These are illegal dumps.
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Four Causes of Fires:
Hot Load (Someone brought the fire to you.)
Spontaneous Combustion (We are working
too hard!)
Equipment (Hot engines, etc.)
Other
Cigarette
Lightning
Arson
??
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A word about spontaneous
combustion
•Microorganisms make compost for us.
•When they are working hard, they get HOT!
•Manage them well to keep them happy.
•If they get too hot, they die. But they may also
ignite when oxygen hits them.
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Let’s prevent a compost fire.
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Site Layout
Make your site large enough for:
Small piles
Aisles
Access
Soil Stockpiles
Isolate Equipment
Isolate the Public
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Temperature Change =
Heat Generation – Heat Loss
Smaller more heat loss* lower temps
Larger less heat loss* higher temps*heat loss PER size unit
(i.e. PER heat generated)
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So…how big?
About 2 Calvins seems to be high enough.
(This is Calvin.)
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Plan for Safety
Aisles for Access and
Circulation
Limit Height
Immaculate
Housekeeping
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First things first…
Fire extinguishers on every piece of equipment
and other locations
Fire extinguishers inspected and operational
Clean soil (or other material) available and
close
Water available if possible
Detailed log book documenting ongoing
conditions to spot trends – cause & effect
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Operation – Think Prevention
Clean Feedstocks - NOT Trash
Clean Site - NOT Dusty, Dirty, Weedy
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This one was mulch for erosion
control.
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Honestly…
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Taking Temperatures is Easy
and Important
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The Magic Numbers
Piles less than 12 feet high
Avoid 30% moisture
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Ways to Cool Off
Keep the moisture up and consistent.
Turn, turn, turn…
Or move, move, move…
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Moist continuous heat loss* lower temps
Dry little heat loss* higher temps
* Evaporation =much heat loss
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Monitor for temperature and smoke.
Even brush piles might need to be turned to
cool off a bit.
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Reference: Tim Richard, Cornell Cooperative Extension Operator’s Fact Sheet #5 of 10
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Did you know?
Turning is more for cooling and
drying than oxygen!
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What might the operator do?
Move equipment out of the way.
Isolate the burning material by carefully
pulling other material away.
Smother with soil or even mulch.
Spread material out.
Water
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Water on top can make a nice
crust…
…just like a blanket!
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Water evenly, all the way
through the pile.
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How many things are going
wrong here?
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Photo Source: Fred Michel
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What would be better?
Move combustible materials and equipment
away.
Carefully remove material that is not
smoldering or burning if you can.
Try to spread the material out if you can and
smother it.
THEN water, mostly to prevent fire from
spreading.
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Training
Train yourself.
Train your staff.
Train your visitors and customers.
Train the public.
Train your firefighters!
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Training
Inspect every piece of equipment.
Inspect its surroundings.
Keep things clean.
Fire extinguishers– location, use, maintenance
No Smoking!
Signage
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What should go in that fire box?
Phone numbers
Cell phone/radio and batteries
Keys to all equipment
Keys to all gates
First Aid Kit
Tools?
Site layout?
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Know Your Fire Marshal
Make sure they understand:
Your site
Your Operation
Mulch and Compost Fires
Isolation and Smothering with Soil
Water may not be the answer.
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Know your capabilities.
What can your staff and equipment do to help
isolate or smother the fire?
When do you need to back out?
Who has authority?
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Question: When a pile fire develops,
and the Fire Department is called and
arrives on the scene, who is in charge?
Answer: The law says the Fire
Department is in charge of dealing
with fires.
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Why does it matter?
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Why does it matter?
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Thank you!
Risa Weinberger & Associates, Inc.
5501 Bryan Street
Dallas, Texas 75206
214-340-8478
www.risawassoc.com