Chemical hazards with explosives

There are explosion hazards with phthahc anhydride, both as a dust or vapor in air and as a reactant. Table 11 presents explosion hazards resulting from phthahc anhydride dust or vapor (40,41). Preventative safeguards in handling sohd phthahc anhydride have been reported (15). Water, carbon dioxide, dry chemical, or foam may be used to extinguish the burning anhydride. Mixtures of phthahc anhydride with copper oxide, sodium nitrite, or nitric acid plus sulfuric acid above 80°C explode or react violently (39). [Pg.484]

The electrochemical process industries are confronted with a wide range of hazards. These include electrical hazards, various explosion hazards, and the hazards associated with exposure to reactive chemicals. [Pg.81]

This is a location which is continuously contaminated with explosive gases, chemical vapours or volatile liquids and thus is highly susceptible to fire hazards. Installation of electrical machines in such areas should be avoided as far as possible, to reduce cost, facilitate maintenance and take other precautions. [Pg.179]

Hydroprocesses Hydrogen is chemically stable and relatively unreactive at ordinary temperatures most processes utilizing it require a catalyst. Above 500°C it reacts readily with oxygen and confined flammable mixtures explode violently if ignited Main hazards fire, explosion, metallurgical problems arising from hydrogen attack... [Pg.249]

There are OSHA standards designed to protect employees from acute chemical hazards resulting lfom reactive incidents-including fires, explosions, and toxic releases. The Hazard Communication Standard (29 CFR 1910.1200) requires chemical manufacturers to evaluate chemicals produced or handled in their workplace and to communicate the hazards associated with the products they produce via labels and MSDSs. The standard also requires all employers to provide information to employees about the hazardous chemicals to which they could be exposed. The PSM Standard (29 CFR 1910.119) requires employers to prevent or minimize the consequences of catastrophic releases of highly hazardous chemicals, including highly reactive chemicals. [Pg.323]

A Boiling Liquid Expanding Vapour Explosion, or BLEVE, is an industrial event related to the laboratory bump occasioned when the inadequately mixed bottom of a vessel of liquid becomes superheated, then explosively boils. In the industrial version, rupture of a pressurised container is usually involved. Although strictly speaking a non-reactive physical hazard, chemical fires and explosions, with fatalities, often follow. Means of estimating risk and prevention, with a fist of incidents are given[l], A more ferocious version, the Boiling Liquid Compressed Bubble... [Pg.76]

Antimony pentachloride reacts explosively with phosphonium iodide, PH4I (Mellor, J. W. 1947. A Comprehensive Treatise on Inorganic and Theoretical Chemistry, Oxford, UK Longmans and Green) and explodes mildly when treated with oxygen difluoride at 150°C (Bretherick, L. 1995. Handbook of Reactive Chemical Hazards, 5 h edition, ed. P.G.Urben, p. 1420. Oxford, UK ... [Pg.51]

This chapter is organized into three main sections providing discussions on the chemistry of fire and explosion, and the chemistry of hazardous materials. The last section of this chapter provides the reader with an extensive glossary of technical terms dealing with chemical hazards and hazard materials handling. [Pg.153]

The most important point which should be kept in mind while working in a laboratory or factory dealing with explosives or hazardous chemicals is... [Pg.440]

Any experimental work related with explosives or hazardous chemicals should always be performed by a team of two persons using minimum possible quantity. [Pg.440]

There are explosion hazards with phthalic anhydride, both as a dust or vapor in air and as a reactant. Water, carbon dioxide, dry chemical, or foam may be used to extinguish the burning anhydride. [Pg.1301]

Dow Fire and Explosion Index (F EI) A method (developed by Dow Chemical Company) for ranking the relative fire and explosion risk associated with a process. Analysts calculate various hazard and explosion indexes using material characteristics and process data. [Pg.1013]

Almost everyone works with or around chemicals and their products every day. Many of these materials have properties that make them hazardous they can create physical (e.g., fire, explosion) or health hazards (e.g., toxicity, chemical bums). However, there are many ways to work with chemicals which can both reduce the probability of an accident and reduce the consequences to minimum levels, should an accident occur. Risk minimization depends on safe practices, appropriate engineering controls for chemical containment, the proper use of personnel protective equipment, the use of the least quantity of material necessary, and substitution of a less-hazardous chemical for the more hazardous one. Before beginning an operation, ask, What would happen if... The answer to this question requires an understanding of the chemical hazards, equipment, and procedures involved. The hazardous properties of the material and intended use will dictate the precautions to be taken. [Pg.505]

The main objective of a fluid curtain is to help mitigate explosions by absorbing energy as droplets break up and by creating an increased total surface area to reduce potential flammable and toxic hazard zones by dilution with air or by chemical reaction with the water or reactive materials contained in the curtain. [Pg.57]

This Chapter details oxidizing solids, which are typically reactive with other materials. At the end of this chapter reactive chemical substances (oxidizing, spontaneously combustible, water-hazardous, unstable, explosive substances) are classified caccording to Bretherick. For the hazardous materials 1 11 under the revised Fire Protection Law, reference should be made to Jiromaru s commentary "1. ... [Pg.254]

DDESB policies, philosophy, and safety criteria are reflected in published chemical ammunition standards which were published in the Federal Register (41 FR 20686) and in DoD Ammunition and Explosives Safety Standards (1 ). These standards are used to review the site plans, safety submissions, and in conducting worldwide safety surveys of activities that store or handle DoD chemical ammunition. The surveys, however, are not conducted just to evaluate compliance with chemical ammunition and explosives safety standards. The surveys are a means whereby the DDESB Secretariat can keep informed on the military departments safety posture, determine the need for new standards or change to existing ones, and detect hazardous conditions. [Pg.238]

Certain hazardous chemicals when stored or mixed together react violently. These chemical substances are unsuitable for mixing and are incompatible. During storage, classes of incompatible chemicals should be segregated from each other according to hazard class. In chemical laboratories, more often than not chemicals are stored alphabetically. This has led to the occurrence of several chemical disasters and explosions. It is important that incompatible chemical substances be handled, stored, and disposed of with care and caution and that no contact is made from one chemical to the other. The following are a few selected incompatible chemical substances. Chemicals in coiumn A should not come in contact with chemicals in coiumn B ... [Pg.261]

Label all chemical containers with hazard details and hazard warnings as flammable, corrosive, organic peroxide, oxidizer, pyrophoric, unstable (reactive), water reactive, combustible liquid, compressed gas, explosive, acids, and/or incompatible. [Pg.273]

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