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Document ID (ISN)30062
CIS number 78-1551
ISBN(s) 91-7464-013-5
Year 1978
Convention or series no.
Author(s) Jansson A.
Title Capture efficiency of a local exhaust system for a hammer drill.
Original title Bestämning av infangningsförmaga - punktutsug till en slagborrmaskin [in Swedish]
Bibliographic information Arbete och hälsa - Vetenskaplig skriftserie 1978:2, Arbetarskyddsstyrelsen, Fack, S-100 26 Stockholm, Sweden. 19p. 4 ref.
Abstract The dust particle capture efficiency was determined for 2 exhaust flows, 2 drill steel diameters and for horizontal and vertical drilling. An optical particle counter was used in a room with known ventilation when drilling with and without the use of the exhaust system. The measuring method and equipment are described. The models used for converting data to capture efficiency values and the relation between caputure efficiency and reduction of dust level are discussed. The results are presented as capture efficiency values for 5 particle size ranges (0.5-10µm). A simplified description of capture efficiency is used by presenting calculated values for total and respirable dust; these are 99% and 98%, respectively. English summary.
Descriptors (primary) dust control; collection efficiency; hammer drills; local exhaust
Descriptors (secondary) Sweden; evaluation of control measures; respirable dust; report
Document type E - Books, reports, proceedings
Subject(s) Dust, aerosols and related diseases
Broad subject area(s)
Browse category(ies) Ventilation