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Tank in Brazil

Nom
Tank in Brazil
Date de l'accident
05/05/1983
Lieu
Brazil
Zone du naufrage
São Paulo State
Zone du déversement
Inland water
Cause de l'accident
Collision
Nature polluant
Carbon tetrachloride, chloroform, 1,2-dichloroethane and 1,1,2-trichloroethane
Type de navire / structure
Cuve
Longueur
0
Largeur
0
Tirant d'eau
0

On 5th May 1983, a road tanker collided with a chemical storage tank, causing 500 m3 of chemicals (including carbon tetrachloride, chloroform, 1,2-dichloroethane and 1,1,2-trichloroethane) to be released into the Pinheirinho and Avecuia rivers in Brazil.

Impact

The accident occurred at a plant located on a plateau. The chemicals leaked into the two nearby rivers, Pinheirinho and Avecuia, which provide water for the municipality of Porto Feliz in the Brazilian State of Sao Paulo. Thorough testing was performed on a series of deep walls directly connected to the municipality's water supply. The company's main well was closed due to the high concentration of organic compounds detected. The streams and lakes on several farms were also contaminated. Fish mortality was reported on the banks of Pinheirinho River.

Response

The chemicals released were chlorinated solvents, which are heavier than water. When spilt in water, they sink without dissolving. Pumping operations began in the deep waters near the spillage area. In 5 days, 20 m3 of chemicals were recovered.  Dredging operations removed a layer of between 0.5 and 1 metre of contaminated mud from the bottom of the lake.

Source:

- Hydrological aspects of accidental pollution of water bodies / World Meteorogical Organization, 1992, n°754, 208pages.

See also

1,2 dicholoroethane, Chemical response guide

Last update on 05/06/2014

See also

1,2 dicholoroethane, Chemical response guide

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