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Document ID (ISN)34458
CIS number 80-1922
ISSN - Serial title Tiefbau-Berufsgenossenschaft
Year 1980
Convention or series no.
Author(s) Roth H., Asmuss M.
Title Safety in sewers
Original title Sicherheit in Abwasserkanńlen [in German]
Bibliographic information Jan. 1980, Vol.92, No.1, p.28-32. Illus.
Abstract Report on an investigation of a serious accident due to a sudden emission of hydrogen sulfide (4 dead, 5 badly poisoned). Preventive measures (ventilation before entering sewers, air monitoring) prescribed by West German regulations were found to be inadequate in the case reported, where large quantities (350-400ppm) of H2S contained in organic sediment were suddenly released. Description of preventive measures, and mechanisms of H2S emission. A safety system, developed in the light of this recent experience, supplements the existing regulations. This system involves the use of a powerful fan (air flow 15,000m3/h) at all times during work in sewers, as well as continuous air monitoring. A specific rescue system has also been set up. Legal aspects of the accident in question.
Descriptors (primary) acute poisoning; work in sewers; hydrogen sulfide
Descriptors (secondary) analysis of accident causes; Germany (Federal Republic of); legislation; mechanical ventilation; respirators; accident descriptions
Document type D - Periodical articles
Subject(s) Toxic and dangerous substances
Broad subject area(s)
Browse category(ies) Confined spaces
Inorganic sulfur compounds
Inorganic substances