HWEA: Moss Water Treatment Plant - Accident History

| Accident History | Chemicals | Emergency Response | Registration | Source | Executive Summary |

Accident on 1999-03-27 06:30:00

Industry (NAICS):Water Supply and Irrigation Systems (22131)
Duration of Release:01:24:00

Release Event

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

Release Source

Storage Vessel:n
Piping:n
Process Vessel:n
Transfer Hose:n
Valve:n
Pump:n
Joint:n
Other Release Source:Feeder valve diaphram failure

Weather Conditions at the Time of Event

Wind: 5 Miles an Hour blowing North West at 65 Degrees Fahrenheit
Atmospheric Stability Class:c
Precipitation Present?n
Unknown Weather Conditions?n

On-Site Impacts

Employee or Contractor Deaths:0
Public Responder Deaths:0
Public Deaths:0
Employee or Contractor Injuries:2
Public Responder Injuries:0
Public Injuries:0
On-site Property Damage ($):0

Known Off-Site Impacts

Deaths:0
Hospitalization:0
Other Medical Treatments:2
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:n
Improper procedures:n
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:

Off-site Responders Notified

Off-site Responders Notified?Notified and Responded

Changes Introduced as a Result of the Accident

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

Confidention Business Information

CBI claimed?n

Chemicals in Accident History

0% of 132 lbs. of the Toxic Chemical "Chlorine", CAS: 7782-50-5.

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