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Home » Articles » on Risk & Safety » Operational Risk Process Safety » Biofuel Safety: Is It Time For Bio-PSM?

by Sanjeev Saraf Leave a Comment

Biofuel Safety: Is It Time For Bio-PSM?

Biofuel Safety: Is It Time For Bio-PSM?

Biofuel production and manufacturing facilities in the United States are increasing rapidly. On August 8, 2005, President Bush signed the Energy Policy Act of 2005 (H.R. 6) into law. The comprehensive energy legislation includes a nationwide renewable fuels standard (RFS) that will double the use of ethanol and biodiesel by 2012.

Biodiesel Incidents 

Biodiesel popularity stems from the fact that it is simple to manufacture and essentially free of sulfur and aromatics. Biodiesel can be easily mixed with regular diesel and used for running automobiles. Although biodiesel is non-flammable and non-reactive, manufacturing of biodiesel poses processing hazards and careful attention should be paid to manufacture biodiesel safely as indicated by the following accidents.

  • Feb. 2006: A fire at American Biofuel’s Biodiesel plant in Bakersfield, California resulted destroyed the entire plant. The fire was caused by a methanol spill possibly ignited by static electricity.
  • 2005: A man repairing glycerin storage tank in a biodiesel facility in Staten Island died due to an explosion.
  • June 2006: Fire destroys a biodiesel plant in Canby

Please note the above list is not comprehensive collection of biodiesel incidents.

Bioethanol Incidents

Over 90 percent of U.S. ethanol is made from corn. Active research is being conducted to manufacture ethanol from cellulose feedstock – agricultural waste, plant residue, municipal solid waste. Below are a few incidents involving bioethanol:

  • June 15th, 2006, Shively, KY: Two Workers Treated For Burns After Fire At Shively Ethanol Plant
  • September 22nd, 2005, West Burlington, IA: A grain dryer was the cause of a fire in an ethanol plant.
  • September 5th, 2005, Brentwood, CA: Two thousand gallons of ethanol spilled onto a roadway and into a storm drain when a tanker truck overturned.

Please note the above list is not comprehensive collection of bio-ethanol incidents.

I would like to share couple of Google Maps (Source: John Astad of Combustible Dust Policy Institute) that graphically display incidents in biodiesel and ethanol plants.

Biodiesel Fires and Explosions Map (click to view)

According to the map, there were  8 fires and 6 explosions in biodiesel facilities in the U.S in 3-year period (2006-2009). This translates to approx. 5 incidents per year.

Ethanol Fires and Explosions Map (click to view)

Based on the map, there were 22 fires and 11 explosions in ethanol facilities in the U.S. in 10-year period (1998-2009). This translates to approx. 3 incidents per year.

Safety Considerations 

Both biodiesel and bioethanol facilities have flammable hydrocarbons especially highly flammable alcohol.

Methanol, ethanol, isopropanol are classified as Class IB flammable liquids according to OSHA 1910.106. Class IB substances  have flash points below 73 F/22.8 C,  boiling point higher than 100 F/37.8 C and can readily catch fire at room temperature. Therefore, special care should be taken while handling flammables in a biofuel production unit. In addition, methanol also poses toxic hazards.

The prevailing consensus amongst independent biofuel manufacturers is that process safety can be achieved by common sense and enforcement of prescriptive codes and standards; however, considerable expertise is needed to comprehensively mitigate biofuel manufacturing risks.

It is recommended that the biofuel manufacturers voluntarily adapt PSM in order to increase the safety of biodiesel production. Process Safety Management (PSM) has been successfully adopted by the chemical industries and refineries in the United States.

Note: Biofuel production facilities that use over 10,000 pounds (~1500 gallons) of alcohol or flammable mixtures are covered by the OSHA PSM rule (29 CFR 1910.119).

PSM can not only assist biofuel industry in the prevention of catastrophic events, it can also enhance employee knowledge of operations, improve technical procedures, maintain accurate process safety information, and increase overall facility productivity. In addition, manufacturing industries follow Recognized and Generally Accepted Good Engineering Practices (RAGAGEP) to improve safety and reduce incidents. Since most of the current biofuel manufacturers are small operations, set of guidelines encompassing PSM elements but less rigorous can be developed for such facilities. At first glance the documentation requirements of OSHA PSM seem daunting; however, a guideline document to ensure compliance with OSHA PSM without consuming too many resources can be developed.

Final Thought

To maintain a positive image, biofuels manufactures should give a serious thought to plant safety either by implementing “PSM-like” approach or by developing independent safety evaluation protocol.

Filed Under: Articles, on Risk & Safety, Operational Risk Process Safety

About Sanjeev Saraf

Reduce risks, Increase Uptime, Reduce costs

I did my first litigation support work in 2000.

Since then I have been obsessed with preventing future failures. Some of these failures can have catastrophic consequences.

Having tried various techniques, learning / unlearning “latest” paradigms, it is clear we have a long way to go!

But instead of thoughtful work, what I mostly see are platitudes and oversimplifications. No keen practical insights!

I want to change that.

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