The visit of Mrs Guezennec

The class of 4°6 received the visit of Mrs. Guezennec, who works on the transport of waste water in Versailles. We learned a lot of things.
Water is transported in the Versailles sewers then, leaves the city in sewers depending on different trade unions according to the sectors.
The SIGSEVESC is the company charged to provide water in Versailles. SMAROV having a contract with the company, is a small communal network. SIAVRM has also a contract with SIGSEVESC, transports water towards station SIAAP another association charged to cleanse water.

There exist two types of sewers:
those you can visit (dimensions: 1 meters out of 0,7 meters) and,
those you can't visit (dimension lower than 1 meters) There is also type of opening on the sewers:
the cast iron plug or trap door which gives access the sewers and,
them heads, where only the rainwater and the mice can return.

The service of cleansing is composed of:
-1 principal engineer (department head)
-1 assistant of the department head (Mrs. Guezennec for Versailles) -1 controller of work designer,
-2 projected inspectors,
-2 administrative agents,
-1 supervisor foreman,
-1 chief of car fleet,
-2 specialized drivers,
-7 canalizing masons and,
-7 sewermen

Investments:
Material:
- machines of building sites,
- shovels and soap,
- suction of sewers,
- meter to measure the level of water,
- probe to see the water flow,
- material of safety (helmet, lamp of helmet, gas-detector, fluorescent sweater)

Work:
- Change of the too worn sewers,
- Hydrocuration (scraping of basic dirtinesses of sewers)
- change of the plugs cast iron,
- Addition of head,
- Creation of retention of sewers (basins retaining to avoid the floods)

Additional tasks:
- talks of the posts fires,
- maintenance of the fountains and,
- monitoring of drains of public buildings.

The service of cleansing is financed by:
- part of the water bills,
- subsidies of the agency of water the Seine Norman and General advice of Yvelines,
- and other incomes