West Helena Chemical Explosion
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A fire at an agricultural chemical packaging facility in West Helena, Arkansas killed 3 firefighters and injured 17 others. The facility repackaged bulk shipments of pesticides and insecticides. When smoke was discovered by employees, firefighters responded but encountered toxic yellow smoke. An explosion occurred, trapping 4 firefighters and killing 3. The fire involved the chemical Azinphos-methyl and burned for 2 weeks before being extinguished. The incident highlighted the importance of facilities understanding chemical hazards and having safety procedures in place.
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West Helena Chemical Explosion
- 1. May 8, 1997 West Helena, Arkansas BPS, Inc.
- 2. Setting the Scene ➔Bartlo Packaging Inc. (BPS) ➔located in a rural/agricultural area ➔agricultural chemical packaging facility ➔bulk shipments repackaged ○ pesticides and insecticides ➔130 employees
- 3. The Incident ➔3 firefighters dead ➔17 firefighters injured ➔hundreds evacuated ➔hundreds sheltered in place ➔multi-agency response ➔2 weeks to extinguish
- 4. The Response ➔smoke discovered by employees ➔FD called at 1302 ➔West Helena FD responds ➔Helena FD requested (mutual aid) ➔West Helena chief meets facility personnel
- 5. The Response ➔yellow smoke is observed ➔Chiefs review MSDS sheets ➔units pull back to plan ➔explosion occurs ➔4 firefighters trapped by debris ➔1 firefighter is rescued
- 6. The Response ➔firefighting operations cease ➔hazmat team requested (toxic smoke) ➔fire could not be extinguished ➔fire was left to burn out
- 7. The Chemical Azinphos-methyl (AZM)
- 8. The Chemical Azinphos-methyl (AZM)
- 13. The Chemical Azinphos-methyl (AZM) 2783 Organophosphorous pesticide
- 14. What went wrong? Possible Scenarios ➔chemical decomposed by compressor heat ➔decomp began prior to delivery ➔incompatible chemicals react ➔compressor overheats AZM sack
- 15. What went wrong? AZM
- 16. What went wrong? TNT
- 17. What went wrong?
- 18. Lessons Learned 1. facilities should have full understanding of chemical hazards 2. facilities, chemicals, equipment, modifications should be regularly reviewed for potential hazards 3. material handling and storage SOP’s should be in place 4. all product information should be accurate and accessible
Hinweis der Redaktion
- “...determined that the incident was most likely caused by the decomposition of a bulk sack containing the pesticide Azinphos methyl (AZM) 50W which had been placed against or close to a hot compressor discharge pipe. Under this scenario, the heat from the discharge pipe would have caused the pesticide material to decompose and give off flammable vapors which resulted in the fatal explosion.” ERG - not found NIOSH - read information (flammable?) MSDS - review information ERG - read information
- “...determined that the incident was most likely caused by the decomposition of a bulk sack containing the pesticide Azinphos methyl (AZM) 50W which had been placed against or close to a hot compressor discharge pipe. Under this scenario, the heat from the discharge pipe would have caused the pesticide material to decompose and give off flammable vapors which resulted in the fatal explosion.” ERG - not found NIOSH - read information (flammable?) MSDS - review information ERG - read information
- “...determined that the incident was most likely caused by the decomposition of a bulk sack containing the pesticide Azinphos methyl (AZM) 50W which had been placed against or close to a hot compressor discharge pipe. Under this scenario, the heat from the discharge pipe would have caused the pesticide material to decompose and give off flammable vapors which resulted in the fatal explosion.” ERG - not found NIOSH - read information (flammable?) MSDS - review information ERG - read information
- “...determined that the incident was most likely caused by the decomposition of a bulk sack containing the pesticide Azinphos methyl (AZM) 50W which had been placed against or close to a hot compressor discharge pipe. Under this scenario, the heat from the discharge pipe would have caused the pesticide material to decompose and give off flammable vapors which resulted in the fatal explosion.” ERG - not found NIOSH - read information (flammable?) MSDS - review information ERG - read information
- “...determined that the incident was most likely caused by the decomposition of a bulk sack containing the pesticide Azinphos methyl (AZM) 50W which had been placed against or close to a hot compressor discharge pipe. Under this scenario, the heat from the discharge pipe would have caused the pesticide material to decompose and give off flammable vapors which resulted in the fatal explosion.” ERG - not found NIOSH - read information (flammable?) MSDS - review information ERG - read information
- “...determined that the incident was most likely caused by the decomposition of a bulk sack containing the pesticide Azinphos methyl (AZM) 50W which had been placed against or close to a hot compressor discharge pipe. Under this scenario, the heat from the discharge pipe would have caused the pesticide material to decompose and give off flammable vapors which resulted in the fatal explosion.” ERG - not found NIOSH - read information (flammable?) MSDS - review information ERG - read information
- “...determined that the incident was most likely caused by the decomposition of a bulk sack containing the pesticide Azinphos methyl (AZM) 50W which had been placed against or close to a hot compressor discharge pipe. Under this scenario, the heat from the discharge pipe would have caused the pesticide material to decompose and give off flammable vapors which resulted in the fatal explosion.” ERG - not found NIOSH - read information (flammable?) MSDS - review information ERG - read information - 2783 - guide 152