The Indian Express 19.07.2013
AMC set to install ventilating columns over manhole covers
column system over manhole covers, after deaths in Narol earlier this
year were believed to be caused by poisonous gases emanating from
sewers. The project, expected to cost Rs 4 crore, will include all
manhole covers in the city, especially in the old city areas.
In January, three people, including two children, were found dead
in Narol. It was suspected that poisonous gases from the drains led to
these deaths. “The project was floated after the Narol incident. It is
meant to stop the recurrence of similar incidents in the future,” said
AMC city engineer Tarun Lad. Details from each zone have already been
called for to gauge the number of manhole covers and positioning of the
ventilating columns. The project testing has been done in areas around
SP ring road and will soon be replicated all over the city. According to
civic authorities, the project is expected to be completed within six
months of releasing the tenders.
Presently, there is a manhole after every 30-40 metres on the
main sewage trunk in Ahmedabad, with dangerous gases, like carbon
monoxide, methane and sulphur, emanating from it. The ventilated columns
to be installed on the manhole covers are expected to take care of
these gases.
