Hazard category

Whatever hazardous materials are involved, whether they be new produces, an existing product in a new package type, hazardous waste, or any other hazard category, the proposed packaging and all conditions which are expected to be incident to its use should be reviewed... 

What are the hazard categories used to defme regulated hazardous wastes ... 

As with the case of mass, there are several approaches to metrics for this aspect. One can simply sum numbers and/or mass of chemicals possessing hazards in different areas for example, process safety, occupational exposure, or environmental hazard. Typically, most companies will use a banding approach for materials that allows a quick identification of the hazard category, and usually marries hazard with a suggested control approach for example, layers of protection, pressure relief valves, and so on. One is then able to rapidly identify issues and potential opportunities for elimination, substitution, or control. 

In addition to regulated chemicals, examples of hazard categories that may be selected for identifying chemicals of concern include but are not limited to Box 8.1. 

All of the hazard and benchmark criteria developed for the Green Screen are presented in the report, along with information on government and other precedents for classification that were used to help establish the thresholds. The hst of hazard categories and threshold values used to define levels of concern in the Green Screen are presented in Table 8.1. 

There are no occupational exposure limits for many hazardous substances which may require control of inhalation exposures. The necessary data and other resources required for setting such limits is restricted and unlikely to match the potential demand. A hazard categorisation scheme was, therefore, developed for application within the chemical industry. The scheme used readily-available information on toxicological endpoints to place hazardous substances into a limited range of hazard categories, expressed as Occupational Exposure Bands. These Bands could be used as a basis for risk assessment and the selection of appropriate control regimes. 10 refs. EUROPEAN COMMUNITY EUROPEAN UNION UK WESTERN EUROPE... 

ECETOC (2004) has proposed a concept of generic threshold values based on hazard categories primarily intended to be used in the risk assessment procedure of industrial chemicals within REACH. The hazard categories are based on EU classihcation limits and for each substance to be risk assessed, inclusion in hazard categories depends on the substance s specific classification (or no classification) according to the Commission Directive 67/548/EC (EC 1967). Three hazard categories have been suggested ... 

A margin of exposure of 2 has been selected as a basis for distinguishing scenarios that are of concern from those which are unlikely to be of concern. Consequently, for inhalation of solids, the GEVs are corresponding to an intake of 25, 500, and 5000 pg/person/day for high, medium, and low hazard category, respectively, based on a respiratory volume of lOm /day. 

Hazard Categories for JACADS Process Areas, 16 3-2 Permit Modifications Submitted for JACADS Closure, 16... 

TABLE 3-1 Hazard Categories for JACADS Process Areas... 

Hazard category Hazard source Path way/mode of occurrence Impacts on principal receptors (with references for examples/ further information)... 

Table 2.1 Hazard categories under the Globally Harmonised System [91]...

Although the GHS system is unlikely to come into force in the EU until after 200812, at which point it will be progressively phased-in, the general principles for classification and labelling follow the current EU scheme. Under GHS, each hazard category shown in Table 2.1 can be subdivided in various ways, for instance ... 

The measures to be taken under the Project will ensure environmental safety in the region thanks to transfer of the above-class NSs from the nuclear-hazardous category to the radiation-hazardous one followed by their dismantlement and thus elimination of the risk of unauthorized sinking. 

The results of the effects testing will be used to place the material in a hazard category based on NATO-UN classification scheme and when combined with the sensitivij y data will give the material an overall hazard classification. For example, a material which is foiind to be an intense fire hazard (consequence 1.3) and sensitive (Category B) to initiation by rubbing friction would be placed in class 1.3B. 

Hazard category means the division of criteria within each hazard class, e.g. oral acute toxicity includes five hazard categories and flammable liquids includes four hazard categories. These categories compare hazard severity within a hazard class and should not be taken as a comparison of hazard categories more generally ... 

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