Not long ago, a chicken farm in the United States closed down due to the pandemic, killing 61,000 chickens with carbon dioxide. Recently, I heard that 280,000 chickens were killed in a three-story coop fire at a chicken farm in the United States.
On the afternoon of April 23, local time in California, a three-story chicken coop caught fire. The fire was so fierce that flames and smoke billowed into the sky and the whole coop collapsed, killing all 280,000 chickens inside.
Firefighters battled for four hours to bring the blaze under control before it spread any further. Fires on American chicken farms are not uncommon.
In July 2017, a fire swept through the coop of a Pennsylvania chicken farm, killing more than 100,000 laying hens.
On January 4, 2020, a massive fire broke out at a poultry farm in southwestern Michigan, killing an estimated 300,000 hens.
In fact, for a long time, some large chicken farms have been driven by profits, and the overloading of the enclosures has been criticized by the American society.
Then the overfed chicken coop, why the fire?
Relevant data show that the most likely fire risk point is ammonia, hydrogen sulfide and other flammable gases exceed the standard. These two gases are flammable and explosive gases, in the air reached a certain concentration, will immediately detonate.
Ammonia has a detonation limit of 15 percent, hydrogen sulfide 4.3 percent, which is still pretty high to blast.
So where did the ammonia and hydrogen sulfide in the chicken coop come from?
First of all, a chicken coop crowded with tens of thousands, or even hundreds of thousands of chickens, slightly not timely to complete the cleaning of the chicken coop, chicken feces, feathers are very easy to deteriorate, decomposed by microorganisms to produce ammonia, and hydrogen sulfide. Both of these are combustible gases, so it's not hard to imagine a chicken coop with hundreds of thousands of chickens in it, excreting poop that would produce extremely high concentrations of combustible gases.
Secondly, the bedding in the chicken coop, chicken farms generally use sawdust, sawdust, grass and other materials with strong water absorption. When the temperature and humidity in the hen house is too high, the pad will absorb a lot of water and become very wet, accelerate the decay of chicken manure, resulting in a rapid rise in ammonia and hydrogen sulfide concentration in a short time.
Moreover, in recent days, according to the local weather forecast, the lowest temperature in California is 12 degrees Celsius. Some chicken farms are worried that the chickens will be cold and affect the production, so they can not do enough ventilation, contributing to the rise in the concentration of combustible gas.
So, to sum up, it is an important risk point of fire explosion. Of course, there are other fire risks, such as dust, feed debris and other dust explosions.
This also reminds our farmers to ensure ventilation, timely cleaning of chicken manure, to eliminate the risk of chicken manure fermentation inside the farm; Harmless treatment of chicken manure is a top priority!
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