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Document ID (ISN)67179
CIS number 96-1482
ISSN - Serial title 0944-8780 - Tiefbau
Year 1995
Convention or series no.
Author(s) Götz M.
Title Safe leakage testing of underground ducts
Original title Sicherheitstechnische Aspekte bei der Dichtheitsprüfung erdverlegter Kanäle [in German]
Bibliographic information Sep. 1995, Vol.107, No.9, p.628-630, 633-634, 636, 638-640. Illus.
Abstract Sewers need to be inspected at regular intervals for the presence of leaks. The conventional methods that are applied for such inspections are outlined. They use compressed water or compressed air. The safety requirements which need to be observed in Germany for performing the inspections are summarized. A new unit for detecting leaks in underground sewers is introduced. It operates with compressed air and accommodates both the shut-off and leak detection equipment. The leak is located with the help of sound reflection. In comparison with the outlined conventional methods the new method is safer and less expensive.
Descriptors (primary) compressed air; sewage; work in sewers; leakage testing; sanitation services
Descriptors (secondary) description of equipment; safety engineering; safety by design; description of technique; equipment testing
Document type D - Periodical articles
Country / State or ProvinceGermany
Subject(s) Commerce, services, offices
Broad subject area(s) Mechanical hazards, transport
Browse category(ies) Water and sanitation services
Confined spaces