Conference paper

Wastewater drainage network: working atmosphere’s analysis

António Conceição ; Polytechnic Institute of Beja, Beja, Portugal
Rui Isidoro ; Polytechnic Institute of Beja, Beja, Portugal
Humberto Chaves ; Polytechnic Institute of Beja and FibEnTech – Fiber Materials and Environmental Technologies, Covilhã, Portugal

Abstract

In the city of Beja, Portugal, there is an infrastructure for the conduction of wastewater for treatment, this infrastructure is subject to periodic and systematic rehabilitation and maintenance and can still be used by authorities and even by other companies. Each manhole is a potential confined space with all the constraints and problems that they usually present. A thorough and systematic analysis of the atmosphere inside the manholes of the wastewater drainage system was made to know the respective risks and hazards to all subjects exposed, throughout the East part of the city, from the gases produced and in these installations. The data collection was carried out in two different periods when the network presented minimum flows in normal operation. The flows were considered minimum after the reading of the flowmeters installed in the measurement areas indicated it.

Keywords

confined space’s occupational safety, hazardous atmospheres, sewer networks, drainage network, gases of combustion and fermentation

Hrčak ID:

308698

URI

https://hrcak.srce.hr/308698

Publication date:

4.10.2023.

Article data in other languages: croatian

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