Arch Chemicals - Mesa Facility - Accident History

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Accident on 1996-12-16 02:00:00

Industry (NAICS):All Other Basic Inorganic Chemical Manufacturing (325188)
Duration of Release:00:20:00

Release Event

Gas Release?n
Liquid Spill/Evaporation?y
Fire?n
Explosion?n

Release Source

Storage Vessel:y
Piping:n
Process Vessel:n
Transfer Hose:n
Valve:n
Pump:n
Joint:n
Other Release Source:

Weather Conditions at the Time of Event

Wind: unkown
Atmospheric Stability Class:u
Precipitation Present?n
Unknown Weather Conditions?y

On-Site Impacts

Employee or Contractor Deaths:0
Public Responder Deaths:0
Public Deaths:0
Employee or Contractor Injuries:1
Public Responder Injuries:0
Public Injuries:0
On-site Property Damage ($):0

Known Off-Site Impacts

Deaths:0
Hospitalization:0
Other Medical Treatments:0
Evacuated:0
Sheltered-in-place:0
Off-site Property Damage ($):0

Environmental Damage

Fish or Animal Kills:n
Tree, Lawn, Shrub, or Crop Damage:n
Water Contamination:n
Soil Contamination:n
Other Environmental Damage:

Initiating Event

Initiating Event:Equipment failure

Contributing Factors

Equipment failure:y
Human error:y
Improper procedures:n
Overpressurization:n
Upset condition:n
By-pass condition:n
Maintenance activity/inactivity:n
Process design failure:n
Unsuitable equipment:y
Unusual weather condition:n
Managment error:y
Other contributing factor:

Off-site Responders Notified

Off-site Responders Notified?No, not Notified

Changes Introduced as a Result of the Accident

Improved or upgraded equipment:y
Revised maintenance:n
Revised training:y
Revised operating procedures:n
New process controls:n
New mitigation systems:n
Revised emergency response plan:n
Changed process:n
Reduced inventory:n
None:n
Other changes introduced:

Confidention Business Information

CBI claimed?n

Chemicals in Accident History

55% of 500 lbs. of the Toxic Chemical "Hydrogen Fluoride/Hydrofluoric Acid (Conc 50% Or Greater) [Hydrofluoric Acid]", CAS: 7664-39-3.

Accident on 1997-02-04 10:30:00

Industry (NAICS):All Other Basic Inorganic Chemical Manufacturing (325188)
Duration of Release:00:01:00

Release Event

Gas Release?n
Liquid Spill/Evaporation?y
Fire?n
Explosion?n

Release Source

Storage Vessel:n
Piping:n
Process Vessel:n
Transfer Hose:y
Valve:n
Pump:n
Joint:n
Other Release Source:

Weather Conditions at the Time of Event

Wind: unkown
Atmospheric Stability Class:u
Precipitation Present?n
Unknown Weather Conditions?y

On-Site Impacts

Employee or Contractor Deaths:0
Public Responder Deaths:0
Public Deaths:0
Employee or Contractor Injuries:1
Public Responder Injuries:0
Public Injuries:0
On-site Property Damage ($):0

Known Off-Site Impacts

Deaths:0
Hospitalization:0
Other Medical Treatments:0
Evacuated:0
Sheltered-in-place:0
Off-site Property Damage ($):0

Environmental Damage

Fish or Animal Kills:n
Tree, Lawn, Shrub, or Crop Damage:n
Water Contamination:n
Soil Contamination:n
Other Environmental Damage:

Initiating Event

Initiating Event:Equipment failure

Contributing Factors

Equipment failure:n
Human error:y
Improper procedures:n
Overpressurization:n
Upset condition:n
By-pass condition:n
Maintenance activity/inactivity:y
Process design failure:n
Unsuitable equipment:y
Unusual weather condition:n
Managment error:n
Other contributing factor:

Off-site Responders Notified

Off-site Responders Notified?No, not Notified

Changes Introduced as a Result of the Accident

Improved or upgraded equipment:n
Revised maintenance:y
Revised training:y
Revised operating procedures:n
New process controls:n
New mitigation systems:n
Revised emergency response plan:n
Changed process:y
Reduced inventory:n
None:n
Other changes introduced:

Confidention Business Information

CBI claimed?n

Chemicals in Accident History

55% of 1 lbs. of the Toxic Chemical "Hydrogen Fluoride/Hydrofluoric Acid (Conc 50% Or Greater) [Hydrofluoric Acid]", CAS: 7664-39-3.

Accident on 1997-02-19 10:00:00

Industry (NAICS):All Other Basic Inorganic Chemical Manufacturing (325188)
Duration of Release:00:02:00

Release Event

Gas Release?n
Liquid Spill/Evaporation?y
Fire?n
Explosion?n

Release Source

Storage Vessel:n
Piping:n
Process Vessel:y
Transfer Hose:n
Valve:n
Pump:n
Joint:n
Other Release Source:

Weather Conditions at the Time of Event

Wind: unkown
Atmospheric Stability Class:u
Precipitation Present?n
Unknown Weather Conditions?y

On-Site Impacts

Employee or Contractor Deaths:0
Public Responder Deaths:0
Public Deaths:0
Employee or Contractor Injuries:1
Public Responder Injuries:0
Public Injuries:0
On-site Property Damage ($):0

Known Off-Site Impacts

Deaths:0
Hospitalization:0
Other Medical Treatments:0
Evacuated:0
Sheltered-in-place:0
Off-site Property Damage ($):0

Environmental Damage

Fish or Animal Kills:n
Tree, Lawn, Shrub, or Crop Damage:n
Water Contamination:n
Soil Contamination:n
Other Environmental Damage:

Initiating Event

Initiating Event:Human error

Contributing Factors

Equipment failure:y
Human error:y
Improper procedures:n
Overpressurization:n
Upset condition:n
By-pass condition:n
Maintenance activity/inactivity:y
Process design failure:n
Unsuitable equipment:n
Unusual weather condition:n
Managment error:n
Other contributing factor:

Off-site Responders Notified

Off-site Responders Notified?No, not Notified

Changes Introduced as a Result of the Accident

Improved or upgraded equipment:y
Revised maintenance:y
Revised training:y
Revised operating procedures:n
New process controls:y
New mitigation systems:n
Revised emergency response plan:n
Changed process:n
Reduced inventory:n
None:n
Other changes introduced:

Confidention Business Information

CBI claimed?n

Chemicals in Accident History

55% of 180 lbs. of the Toxic Chemical "Hydrogen Fluoride/Hydrofluoric Acid (Conc 50% Or Greater) [Hydrofluoric Acid]", CAS: 7664-39-3.

Accident on 1997-09-05 21:00:00

Industry (NAICS):All Other Basic Inorganic Chemical Manufacturing (325188)
Duration of Release:00:01:00

Release Event

Gas Release?n
Liquid Spill/Evaporation?y
Fire?n
Explosion?n

Release Source

Storage Vessel:y
Piping:n
Process Vessel:n
Transfer Hose:n
Valve:n
Pump:n
Joint:n
Other Release Source:

Weather Conditions at the Time of Event

Wind: unkown
Atmospheric Stability Class:u
Precipitation Present?n
Unknown Weather Conditions?y

On-Site Impacts

Employee or Contractor Deaths:0
Public Responder Deaths:0
Public Deaths:0
Employee or Contractor Injuries:1
Public Responder Injuries:0
Public Injuries:0
On-site Property Damage ($):0

Known Off-Site Impacts

Deaths:0
Hospitalization:0
Other Medical Treatments:0
Evacuated:0
Sheltered-in-place:0
Off-site Property Damage ($):0

Environmental Damage

Fish or Animal Kills:n
Tree, Lawn, Shrub, or Crop Damage:n
Water Contamination:n
Soil Contamination:n
Other Environmental Damage:

Initiating Event

Initiating Event:Human error

Contributing Factors

Equipment failure:n
Human error:y
Improper procedures:n
Overpressurization:n
Upset condition:n
By-pass condition:n
Maintenance activity/inactivity:n
Process design failure:n
Unsuitable equipment:y
Unusual weather condition:n
Managment error:n
Other contributing factor:

Off-site Responders Notified

Off-site Responders Notified?No, not Notified

Changes Introduced as a Result of the Accident

Improved or upgraded equipment:y
Revised maintenance:n
Revised training:y
Revised operating procedures:n
New process controls:n
New mitigation systems:n
Revised emergency response plan:n
Changed process:n
Reduced inventory:n
None:n
Other changes introduced:

Confidention Business Information

CBI claimed?n

Chemicals in Accident History

55% of 1 lbs. of the Toxic Chemical "Hydrogen Fluoride/Hydrofluoric Acid (Conc 50% Or Greater) [Hydrofluoric Acid]", CAS: 7664-39-3.

Accident on 1997-11-23 21:00:00

Industry (NAICS):All Other Basic Inorganic Chemical Manufacturing (325188)
Duration of Release:00:10:00

Release Event

Gas Release?n
Liquid Spill/Evaporation?y
Fire?n
Explosion?n

Release Source

Storage Vessel:n
Piping:n
Process Vessel:y
Transfer Hose:n
Valve:n
Pump:n
Joint:n
Other Release Source:

Weather Conditions at the Time of Event

Wind: unkown
Atmospheric Stability Class:u
Precipitation Present?n
Unknown Weather Conditions?y

On-Site Impacts

Employee or Contractor Deaths:0
Public Responder Deaths:0
Public Deaths:0
Employee or Contractor Injuries:1
Public Responder Injuries:0
Public Injuries:0
On-site Property Damage ($):0

Known Off-Site Impacts

Deaths:0
Hospitalization:0
Other Medical Treatments:0
Evacuated:0
Sheltered-in-place:0
Off-site Property Damage ($):0

Environmental Damage

Fish or Animal Kills:n
Tree, Lawn, Shrub, or Crop Damage:n
Water Contamination:n
Soil Contamination:n
Other Environmental Damage:

Initiating Event

Initiating Event:Equipment failure

Contributing Factors

Equipment failure:y
Human error:y
Improper procedures:n
Overpressurization:n
Upset condition:n
By-pass condition:n
Maintenance activity/inactivity:n
Process design failure:n
Unsuitable equipment:y
Unusual weather condition:n
Managment error:n
Other contributing factor:

Off-site Responders Notified

Off-site Responders Notified?No, not Notified

Changes Introduced as a Result of the Accident

Improved or upgraded equipment:y
Revised maintenance:n
Revised training:y
Revised operating procedures:n
New process controls:y
New mitigation systems:n
Revised emergency response plan:n
Changed process:n
Reduced inventory:n
None:n
Other changes introduced:

Confidention Business Information

CBI claimed?n

Chemicals in Accident History

55% of 100 lbs. of the Toxic Chemical "Hydrogen Fluoride/Hydrofluoric Acid (Conc 50% Or Greater) [Hydrofluoric Acid]", CAS: 7664-39-3.

Accident on 1998-01-26 14:00:00

Industry (NAICS):All Other Basic Inorganic Chemical Manufacturing (325188)
Duration of Release:00:01:00

Release Event

Gas Release?n
Liquid Spill/Evaporation?y
Fire?n
Explosion?n

Release Source

Storage Vessel:n
Piping:n
Process Vessel:n
Transfer Hose:n
Valve:y
Pump:n
Joint:n
Other Release Source:

Weather Conditions at the Time of Event

Wind: unkown
Atmospheric Stability Class:u
Precipitation Present?n
Unknown Weather Conditions?y

On-Site Impacts

Employee or Contractor Deaths:0
Public Responder Deaths:0
Public Deaths:0
Employee or Contractor Injuries:1
Public Responder Injuries:0
Public Injuries:0
On-site Property Damage ($):0

Known Off-Site Impacts

Deaths:0
Hospitalization:0
Other Medical Treatments:0
Evacuated:0
Sheltered-in-place:0
Off-site Property Damage ($):0

Environmental Damage

Fish or Animal Kills:n
Tree, Lawn, Shrub, or Crop Damage:n
Water Contamination:n
Soil Contamination:n
Other Environmental Damage:

Initiating Event

Initiating Event:Human error

Contributing Factors

Equipment failure:n
Human error:y
Improper procedures:y
Overpressurization:n
Upset condition:n
By-pass condition:n
Maintenance activity/inactivity:y
Process design failure:n
Unsuitable equipment:n
Unusual weather condition:n
Managment error:y
Other contributing factor:

Off-site Responders Notified

Off-site Responders Notified?No, not Notified

Changes Introduced as a Result of the Accident

Improved or upgraded equipment:n
Revised maintenance:y
Revised training:y
Revised operating procedures:n
New process controls:n
New mitigation systems:n
Revised emergency response plan:n
Changed process:n
Reduced inventory:n
None:n
Other changes introduced:

Confidention Business Information

CBI claimed?n

Chemicals in Accident History

55% of 40 lbs. of the Toxic Chemical "Hydrogen Fluoride/Hydrofluoric Acid (Conc 50% Or Greater) [Hydrofluoric Acid]", CAS: 7664-39-3.

Accident on 1999-06-09 03:30:00

Industry (NAICS):All Other Basic Inorganic Chemical Manufacturing (325188)
Duration of Release:00:01:00

Release Event

Gas Release?n
Liquid Spill/Evaporation?y
Fire?n
Explosion?n

Release Source

Storage Vessel:y
Piping:n
Process Vessel:n
Transfer Hose:n
Valve:n
Pump:n
Joint:n
Other Release Source:

Weather Conditions at the Time of Event

Wind: unkown
Atmospheric Stability Class:u
Precipitation Present?n
Unknown Weather Conditions?y

On-Site Impacts

Employee or Contractor Deaths:0
Public Responder Deaths:0
Public Deaths:0
Employee or Contractor Injuries:1
Public Responder Injuries:0
Public Injuries:0
On-site Property Damage ($):0

Known Off-Site Impacts

Deaths:0
Hospitalization:0
Other Medical Treatments:0
Evacuated:0
Sheltered-in-place:0
Off-site Property Damage ($):0

Environmental Damage

Fish or Animal Kills:n
Tree, Lawn, Shrub, or Crop Damage:n
Water Contamination:n
Soil Contamination:n
Other Environmental Damage:

Initiating Event

Initiating Event:Human error

Contributing Factors

Equipment failure:n
Human error:y
Improper procedures:y
Overpressurization:n
Upset condition:n
By-pass condition:n
Maintenance activity/inactivity:n
Process design failure:n
Unsuitable equipment:n
Unusual weather condition:n
Managment error:n
Other contributing factor:System not depressurized

Off-site Responders Notified

Off-site Responders Notified?No, not Notified

Changes Introduced as a Result of the Accident

Improved or upgraded equipment:n
Revised maintenance:n
Revised training:y
Revised operating procedures:y
New process controls:n
New mitigation systems:n
Revised emergency response plan:n
Changed process:n
Reduced inventory:n
None:n
Other changes introduced:

Confidention Business Information

CBI claimed?n

Chemicals in Accident History

70% of 1 lbs. of the Toxic Chemical "Hydrogen Fluoride/Hydrofluoric Acid (Conc 50% Or Greater) [Hydrofluoric Acid]", CAS: 7664-39-3.

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