Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Control asbestos

Microscopists in every technical field use the microscope to characterize, compare, and identify a wide variety of substances, eg, protozoa, bacteria, vimses, and plant and animal tissue, as well as minerals, building materials, ceramics, metals, abrasives, pigments, foods, dmgs, explosives, fibers, hairs, and even single atoms. In addition, microscopists help to solve production and process problems, control quaUty, and handle trouble-shooting problems and customer complaints. Microscopists also do basic research in instmmentation, new techniques, specimen preparation, and appHcations of microscopy. The areas of appHcation include forensic trace evidence, contamination analysis, art conservation and authentication, and asbestos control, among others. [Pg.328]

Asbestos Control and Replacements Guidelines for Electric Utilities, Electric Power Research Institute, Palo Alto, Calif., and Empire State Electric Energy Research Corp., N.Y., Aug. 1994. [Pg.93]

Oberta, A.F. Manual on Asbestos Control Removal, Management and the Visual Inspection Process, American Society for Testing Materials, West Con shohocken, PA, 1995. [Pg.151]

EH 10 Asbestos — control limits and measurement of airborne dust concentrations (1984) EH 11 Arsine - health and safety precautions (1977)... [Pg.165]

Asbestos control limits are determined by fibre counting with the phase contrast opticai microscope, and are ... [Pg.265]

The furnace and thermostatic mortar. For heating the tube packing, a small electric furnace N has been found to be more satisfactory than a row of gas burners. The type used consists of a silica tube (I s cm. in diameter and 25 cm. long) wound with nichrome wire and contained in an asbestos cylinder, the annular space being lagged the ends of the asbestos cylinder being closed by asbestos semi-circles built round the porcelain furnace tube. The furnace is controlled by a Simmerstat that has been calibrated at 680 against a bimetal pyrometer, and the furnace temperature is checked by this method from time to time. The furnace is equipped with a small steel bar attached to the asbestos and is thus mounted on an ordinary laboratory stand the Simmerstat may then be placed immediately underneath it on the baseplate of this stand, or alternatively the furnace may be built on to the top of the Simmerstat box. [Pg.470]

The advantages of the above air bath are (1) simplicity and cheapness of construction (2)ease of temperature control (3) rapidity of cooling of the contents of the flask effected either by removing the asbestos covers or by completely removing the air bath and (4) the contents of the flask may be inspected by removing the asbestos covers. [Pg.60]

Several forms of apparatus employing electrical heati iig wi 11 be described. A simple form may be readily constructed from a domestic electric iron of 400-500 watts rating. The handle is removed, and two holes of 8 mm. diameter are drilled through the base (ca. 11 mm. thick) so that they meet in the centre of the block. One hole is for a 360° thermometer (small bulb) the other hole is spare and can be used for comparison with a standard thermometer. The heater is mounted on a sheet of thick asbestos board which is fixed to an appropriate wooden base. The wires from the heating unit are connected to two insulated terminals fitted on the board (Fig. 11, 11, 1). The rate of heating is controlled by either of the following methods ... [Pg.80]

Substitution of less toxic materials for asbestos (qv) is the most common control. [Pg.104]

K. CTeixy, Asbestos Engineering, Management, and Control, Lewis Publishing Co., Boca Raton, Fla., 1988. [Pg.110]

Other fibrous and porous materials used for sound-absorbing treatments include wood, cellulose, and metal fibers foamed gypsum or Pordand cement combined with other materials and sintered metals. Wood fibers can be combined with binders and dame-retardent chemicals. Metal fibers and sintered metals can be manufactured with finely controlled physical properties. They usually are made for appHcations involving severe chemical or physical environments, although some sintered metal materials have found their way into architectural appHcations. Prior to concerns regarding its carcinogenic properties, asbestos fiber had been used extensively in spray-on acoustical treatments. [Pg.312]

Control of Asbestos at Work Regulations 1987 and subsequent amendments... [Pg.117]

Before starting any work which is liable to expose employees to asbestos dust, an assessment of the work is required to help decide the measures necessary to control exposure. This should ... [Pg.120]

Identify the type of asbestos (or assume that it is crocidolite or amosite, to which stricter controls are applicable than to chrysotile). [Pg.120]

HSG 189/1 Controlled asbestos strapping techniques for work requinng a licence... [Pg.576]

L 27 The control of asbestos at work. Control of Asbestos at Work Regulations 1987 - Approved Code of... [Pg.579]

See other pages where Control asbestos is mentioned: [Pg.367]    [Pg.111]    [Pg.374]    [Pg.89]    [Pg.367]    [Pg.1777]    [Pg.190]    [Pg.291]    [Pg.291]    [Pg.378]    [Pg.367]    [Pg.111]    [Pg.374]    [Pg.89]    [Pg.367]    [Pg.1777]    [Pg.190]    [Pg.291]    [Pg.291]    [Pg.378]    [Pg.96]    [Pg.117]    [Pg.118]    [Pg.181]    [Pg.218]    [Pg.338]    [Pg.375]    [Pg.489]    [Pg.313]    [Pg.272]    [Pg.274]    [Pg.275]    [Pg.328]    [Pg.790]    [Pg.122]    [Pg.13]    [Pg.119]    [Pg.176]    [Pg.441]    [Pg.558]    [Pg.558]    [Pg.558]    [Pg.559]    [Pg.565]   


SEARCH



Asbestos

© 2024 chempedia.info