A dairy cow mill feeds at a ranch (AP Photo/E.B. McGovern)
Wednesday, August 17, 2016 10:46AM
AMHERST, Wis. -- A farmer in Portage County, WI died after inhaling deadly fumes from a manure holding tank.
The county coroner says 29-year-old Michael Biadasz was found dead Monday along with at least 13 cows at Biadasz Farms near Amherst.
WAOW-TV reports the farmer was found by other workers who arrived to haul away manure from the huge tank. Coroner Scott Rifleman says Biadasz was overcome by methane or sulfur oxide. Rifleman says weather conditions, including warmer upper air temperatures, created a deadly dome of air.
Authorities say besides the 13 cows that died, others became sick.
While deaths from methane gas are rare, they do occur. In 2007, five members of a Virginia family were killed when pipe become blocked causing a build up of methane gas.
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Learn from manure gas death stats
April 4, 2016 Category: People
by Robert Meinen, Penn State Extension
With
34 percent of the deaths, exposure occurred during repair or
maintenance and 22 percent occurred to those attempting rescue.
I
recently received a call from Washington D.C. and an investigator from
the Occupational Safety and Health Administration (OSHA) was on the
line. Since OSHA does not routinely deal with agriculture, I braced
myself to hear what the call subject would be.
The call was prompted by the unfortunate death of a farm
worker who was standing on top of a liquid manure spreader tank as it
was filling up. The cause of death was asphyxiation associated with
hydrogen sulfide gas. The representative was hoping to understand what
normal manure handling equipment and practices are since she had not run
into this type of accident in the past.
In the Mid-Atlantic region, the past couple years have been
thankfully quiet as far as headlines of manure handling deaths go.
Perhaps this could be attributed to greater industry awareness and
education after several well-publicized tragedies in 2011-2012. Other
regions were not so fortunate.
In 2015, two pairs of co-working father and sons died when
trying to remove or retrieve equipment from manure storage areas. One
instance was in Wisconsin and the other in Iowa.
Purdue University researchers studied 91 deaths and 21
severe injuries related to manure-generated gas from 1974 to 2004. The
researchers reported that with 34 percent of the deaths, exposure
occurred during repair or maintenance and 22 percent occurred to those
attempting rescue. Disturbingly, 21 percent of the fatalities
investigated in this study occurred to people under the age of 16.
Witnesses listed 13 of the victims as 'playing and discovered missing.'
All of these were children.
Recurring themes are easily found in reports on this subject. I hope you can learn from these items that jump out at me:
- Hydrogen sulfide is our most dangerous gas and can cause immediate asphyxiation at high levels. Economic imports to the farm, such as distiller's grains or gypsum bedding, actually increase sulfur levels in manure. Microbial degradation of sulfur compounds in storage leaves hydrogen sulfide as a by-product.
- Repair and equipment retrieval is dangerous. It is tempting to enter a confined area for a quick job — don't! Remove equipment for maintenance and retrieve dropped items with a magnet or hook.
- Rescuers are at risk. Rescuers often end up as victims. The recommendation, of course, is to never go in to try to retrieve someone without proper rescue equipment. In this situation it is better to be an unsung hero by operating in a manner that minimizes risk and avoids these situations in the first place. Don't become a statistic.
- Liquid manures are more dangerous than solid manures. Nonetheless, solid manure systems need respect. I know two local men who have lost consciousness while moving poultry broiler litter.
- It is unclear if dairy or swine farms present higher risk. The Field and Beaver report found that 55 percent of fatalities occurred in the dairy industry and 44 percent in the swine industry.
- Complacency kills. It is not unusual in fatality situations to hear things like, "He's gone in there to unclog that pump a hundred times." Make safety your routine.
- Anaerobic conditions present increase risk. The accumulation of manure volumes through the winter months can lead to anaerobic zones.
- Warmer weather increases risk. This makes sense since microbial populations will proliferate as temperatures increase.
- Make choices for children. Adults should take precautions to educate and protect children that live or visit a farm. This means providing kid-proof barricades to manure storage and handling areas.
- Ventilate! Keep air moving through confined spaces and animal housing areas.
- Agitation is like shaking a soda can. Agitation and movement of manure releases gas. Static manure situations can accumulate aqueous forms of gas that are released during disturbance. To demonstrate this in trainings I often shake one cola can and not shake another. I put these behind my back then hand a random can to a class participant. No one has opened the can yet.
- You can work yourself to death. Agricultural work ethics are unparalleled, however at any sign of gas exposure or dangerous gas levels clear all workers from suspect areas and take a break.
- Monitors. Gas monitors provide an alarm of invisible dangers. These can be worn on the belt. A number of vendors sell or rent reliable monitors.
Warning about toxic manure gases
UNIVERSITY PARK, Pa. — A narrowly averted farm tragedy this month has a farm safety expert in Penn State’s College of Agricultural Sciences renewing his warning about the dangers of toxic gases emanating from manure-storage facilities.
The stark reminder of the serious hazards lurking around manure pits came to light once again Sept. 17 on a Montour County farm, explained Davis Hill, senior extension associate in the University’s Agricultural Safety and Health Program.
Two brothers, ages 2 and 4, were found unresponsive next to the family farm’s manure storage just minutes after their father and grandfather began agitating the manure in the tank. The brothers were riding their bikes on a roadway that runs next to the structure.
“Their dad explained that he had just started the tractor that operated the agitator,” Hill said. “He checked the connections for leaks and then decided to walk around to the back of the structure so he could see into the top more easily to make sure it was mixing correctly. The back of the structure was buried in the ground with a roadway around the back which leads up to the barnyard.
“As he walked around the side toward the back, he found his two sons. The youngest was blue while the other one was very pale.
Both were unresponsive
He immediately told his dad to shut down the agitator and call 911 while he moved both boys to fresh air.The older son revived quickly. The younger boy remained unconscious for nearly 20 minutes.”
The structure
The manure storage structure is 124 feet across and 12 feet deep, Hill noted. The tank was partially buried and partially above ground. It was nearly full and covered with the typical crust that forms on top of liquid-manure storages. It was the first day for agitating the storage.“The first day of agitation or mixing of the manure is when we often see higher levels of manure gas,” he said. “When you break up that crust and stir around the manure, gases that are contained below the crust are allowed to pour out of the storage.”
The back side of the structure is mostly buried, with only a foot or so above ground level. The gases “boiled over” the wall and settled next to the structure, where the children were found.
“No one really would have suspected that until this incident happened, and now, it is very clear to see,” Hill said. “Being heavier than air, the toxic gases would accumulate right where the children were riding their bikes.”
There are four predominant toxic gases that are produced during manure storage and released during agitation. The most serious of these, from a health standpoint, is hydrogen sulfide. This gas is colorless and has a rotten egg smell at very low concentrations, but people are not able to detect this odor at high concentrations.
Dangerous gasses
Hydrogen sulfide is heavier than air, which means it will stay close to the surface or settle in low areas. As the manure in this structure was being agitated and stirred, high levels of this toxic gas would have been released when the crust of the manure was broken, Hill pointed out.As the amount of gas built up on the surface of the manure, it likely spilled over the top of the wall and rolled to the ground.
“At high levels, this toxic gas can cause loss of consciousness and stopping or pausing of breathing and can lead to death,” he said. “At extremely high levels, breathing will cease and death can occur within minutes.”
Federal and state agriculture officials have raised concerns about the possibility of higher-than-usual levels of hydrogen sulfide gas being emitted from manure pits containing gypsum-based animal bedding, such as was used on this farm.
Hill said he plans to work with the U.S. Department of Agriculture’s Natural Resources Conservation Service and others on research to determine if there is a connection between gypsum bedding, elevated hydrogen sulfide levels and manure-pit incidents.
He is looking for farmers using gypsum bedding who are willing to participate in this research. Interested farmers can contact him at 814-865-2808 or by email at deh27@psu.edu.
Other gasses
Hill said carbon dioxide also is released during manure agitation. This gas, which is heavier than air, is also colorless and odorless. “Carbon dioxide displaces oxygen and, at high levels, can cause a person to quit breathing,” he explained.Ammonia, another manure gas, is lighter than air, which means it normally will rise once it’s released, according to Hill.
“This gas is colorless but has a very pungent odor which will get stronger at higher concentrations,” he said. “This property will cause anyone exposed to this gas to vacate the area immediately.”
Methane is the other gas people often relate with manure storages. This is another colorless and odorless gas. Like ammonia, it is lighter than air, which means it will dissipate outside. This gas will asphyxiate, which means it will displace breathable oxygen in high enough concentration. This gas also is very flammable and explosive in the right concentration.
Be ware
The recent incident should be a warning to other farmers that have manure storages where toxic gases can be released, Hill stressed. He offered the following recommendations regarding these structures:Make sure everyone who needs to be near manure-storage structures understand the hazards, including how the various gases can affect them.
Make sure there is no access to low lying areas next to these structures during manure agitation. Consider a buffer zone of at least 20 feet around the structure during this time.
Especially keep children well away from all hazardous farm operations. Lower concentrations of toxic gases can have serious effects on them.
Bystanders and nonessential workers should stay away during agitation and manure pump-out operations.
When agitating manure storages located below animal living areas, realize that dangerous levels of toxic gases can be pushed up through slotted floors into the animal housing. Make sure these spaces are well ventilated before and during agitation. In some cases, people and animals should be removed before agitation of the manure.
If you must be near spaces that are being agitated, wearing a portable gas detector would offer an early warning if toxic gas is present. This device is relatively inexpensive and can measure a single gas (hydrogen sulfide is suggested) or multiple gases and can give warning by sounding an audible alarm when dangerous levels of gas are being released.
Other safety suggestions related to manure storages can be found online at http://www.agsafety.psu.edu/.