Accidental contact

Mononitrothiophene is an active poison. The accidental contact of an ethereal solution with the skin has produced painful blisters. In case of accident the compound should be removed from the exposed surface by washing with alcohol. 

For adjustment and for monitoring the cathodic protection, test points are necessary along the cable (see Section 10.3.2). It is convenient to install these test points at the cable sleeves. This gives distances between test points of about 0.5 km. The installation of test points to measure conduit current is also convenient for locating accidental contacts. 

Trace contamination of an immiscible liquid can occur following accidental contact with another liquid even if the mutual solubilities are considered insignificant. 

Substances in column 1 must be stored/handled so that they cannot accidentally contact corresponding substances in column 2 because toxic materials (column 3) would be produced. 

Avoid accidental contact with ignition sources. 

Insulation for personnel safety is required only when accidental contact of the hot surfaces could be made by personnel within normal work or walk areas. Isolation may be in the form of guards or barriers and, in special cases, warning signs. 

Guarding. Live parts of electric equipment must be guarded to prei ent accidental contact. Li c parts may be guarded by ... 

Hot surfaces can produce serious bums to personnel in chemical plant operations. Surfaces tliat are witltin reach of personnel should be insulated or tlie areas shielded from accidental contact. Many critical areas in chemical plant operations should be restricted to all but e.xperienced workers. 

Fan guards of wire grating or hardware cloth are mounted helow the fan to prevent accidental contact with the moving blades and to keep newspapers, leaves, and other light objects from being drawn into the fan. The use of a wire fence around the entire unit is good to keep unauthorized individuals away from all of the equipment how-... 

A guarded machine is an open machine in which all openings giving direct access to live metal or rotating parts (except smooth rotating surfaces) are limited in size by the structural parts or by screens, baffles, grilles, expanded metal, or other means to prevent accidental contact with hazardous parts. 

In the event of accidental contact of hydrogen fluoride with the skin, the affected area must be washed immediately and... 

If the results of the rabbit eye irritation test can be extrapolated to man, accidental contact of these chlorodibenzodioxins with the eyes... 

Segregate stocks of chlorine from acetylene, hydrogen, ammonia and fuel gases and ensure no accidental contact with ethers, hydrocarbons and other organics and finely divided metals. Never mix chlorine with another gas in the cylinder. 

Separators Separators made of insulating material are almost always arranged between electrodes of different polarity. They have a variety of functions, ranging from a mechanical separation of the electrodes and prevention of accidental contact to the strictest separation of anolyte and catholyte (the electrolyte volumes at the... 

The most important part of the approach adopted in this book is concerned with the analysis of dangerous reactions , in this chapter a forecast analysis of risks that can be caused by an interaction between two or several chemicals, or between chemicals and materials, is proposed. It will be a general approach, and its purpose is to develop a range of tools in order to forecast and quantify risks due to substance reactivity in deliberate or accidental contact. 

Provide adequate illumination for work activities. Equip temporary lights with guards to prevent accidental contact Install all wiring and electrical equipment in accordance with the National Electric Code... 

There is a significant amount of data from other countries on the effects on human health of large-scale pesticide production and use, in particular of OPPs and OCPs. Even one-time, accidental contact with some OCPs and OPPs such as dieldrin, malathion, and parathion, can lead to changes in the encephalogram (which remain for a year after exposure), disruptions of sleep patterns and memory, loss of libido, and difficulties in concentration [3]. Global practice shows that all pesticides are toxic to humans. 

Accidental contact of the molten alloy (26% Al) with a wet rusty iron surface caused violent explosions with brilliant light emission. Initial evolution of steam, causing fine dispersion of the alloy, then interaction of the fine metals with rust in a thermite reaction, were postulated as likely stages. Direct interaction of the magnesium (74%) with steam may also have been involved. 

Dining preparations to initiate the explosion of nitromethane sensitised by addition of 20% of the diamine, accidental contact of the liquid mixture with the solid tetryT detonator caused ignition of the latter. 

An emulsion, formed during extraction of a strongly alkaline liquor with trichloroethylene, decomposed with evolution of the spontaneously flammable gas, dichloro-acetylene [1]. This reaction could also occur if alkaline metal-stripping preparations were used in conjunction with trichloroethylene degreasing preparations, some of which also contain amines as inhibitors, which could also cause the same reaction [2], Apparently accidental contact of the solvent with potassium hydroxide solution led to generation of flames in the charging port of a stirred reactor [3], See Tetrachloroethylene Sodium hydroxide... 

Accidental contact of 50% sodium hydroxide solution with residual trichloroethanol in a pump caused an explosion. This was confirmed in laboratory experiments. 

Accidental contact of a mixture containing the peroxide with the hot top of the freshly sealed glass container led to an explosion. 

The mechanism of explosion of molten salt at 1100°C in accidental contact with water was studied. 

MCA Case History No. 282 Erroneous addition of cone, sulfuric acid to sodium chlorate instead of sodium chloride caused an explosion owing to formation of chlorine dioxide [1]. Accidental contact of 93% acid on clothing previously splashed with sodium chlorate caused immediate ignition [2],... 

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