Sewer construction

The sewerage system guiding the fresh water supply and the disposal of wastewater is a prerequisite for the development of residential, commercial and industrial areas. Refurbishment and maintenance are important parts of sewer construction but pose major health risks for employees in confined spaces due to toxic and flammable gases. With GfG's portable gas detection devices and accessories for clearance measurement, entering the manhole becomes much less of a danger.

Gas monitoring in the sewer system

The work of sewer builders by no means ends with the completion of a sewer section. Inspections have to be carried out in regular intervals and maintenance and repair work must of course be executed as well. Every time one or more employees have to enter a sewer, putrid gases pose a variety of gas dangers to them, ranging from over-exposure of methane, carbon dioxide or hydrogen sulphide to oxygen deficiency. Reconaissance is mandatory before entering a manhole. The Polytector III G999 has an integrated pump for safe confined space gas monitoring. Carrying multi-gas detectors in the sewer is necessary to be informed about critical gas concentrations at all times. With the Microtector III G888, GfG offers a compact 7-gas detection device for use in confined spaces. With the portable Connected Safety-Monitor TeamLink, the supervisor can remotely secure the employees in the duct even without visual contact and view the local measured values in real time.

Potential dangers:

» combustible and toxic gases
» confined spaces
» carbon dioxide
» oxygen deficiency

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