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Is applicable to electrical apparatus protected by enclosures and surface temperature limitation for use in areas where combustible dust may be present in quantities which could lead to a fire or explosion hazard. It specifies requirements for design, construction and testing of electrical apparatus. Note - IEC 61241-2 gives guidance on the selection, installation and maintenance of the…

This International Standard specifies a method for the evaluation in aqueous medium of the ultimate biodegradability and, as additional information, the primary biodegradability and the total elimination from water, of organic compounds at a given concentration by aerobic microorganisms. The conditions described in this International Standard normally correspond to optimal conditions for allowing…

1.1 This International Standard specifies test methods for the determination of residual thiosulfate and other related chemicals in processed photographic materials. 1.2 This International Standard applies to silver halide/gelatin products that have been processed with a final thiosulfate fixing bath and a water wash. This International Standard does not apply to stabilised black-and-white…

1. Background 1.1 Environmental Management Systems and ISO 14001 An environmental management system (EMS) can be thought of as the application of general management principles to the enviro nmental issues associated with an organization's activities, products, and services. It provides a framework within which an organization can systematically identify and manage those elements…

1. Domaine d'application 1.1 Cette norme vise les réfrigérateurs, les réfrigérateurs-congélateurs et les congélateurs commerciaux utilisés pour le stockage des aliments et autres marchandises périssables. 1.2 La norme vise : a) les appareils standard commerciaux cités en catalogues ; b) les armoires fermées de type autonome ; c) les armoires de stockage réfrigérées commerciales…

This International Standard specifies a method for assessing the potential toxicity of a test material to the growth of aerobic bacteria present in activated sludge. The inhibitory effect is restricted to those microorganisms capable of growth on the chosen organic test medium. This method gives information on inhibitory effects on the microorganisms over incubation periods up to 6 h. This method…

This part of ISO 13468 covers the determination of the total luminous transmittance, in the visible region of the spectrum, of planar transparent and substantially colourless plastics, using a double-beam scanning spectrophotometer. This part of ISO 13468 cannot be used for plastics which contain fluorescent materials. This part of ISO 13468 is applicable to transparent moulding materials, films…

1. Scope 1.1 This Standard covers the design, construction, operation, and maintenance of oil and gas industry pipeline systems that convey (a) liquid hydrocarbons, including crude oil, multiphase fluids, condensate, liquid petroleum products, natural gas liquids, and liquefied petroleum gas; (b) oilfield water; (c) oilfield steam; (d) carbon dioxide used in oilfield enhanced…

1 General The purpose of this standard is to harmonize as far as practicable all rules and requirements of a general nature applicable to low-voltage switchgear and controlgear in order to obtain uniformity of requirements and tests throughout the corresponding range of equipment and to avoid the need for testing to different standards. All those parts of the various equipment standards…

2 Scope 2.1 Type of equipment This Standard applies to cast resin partitions pressurized with inert gases, eg, sulphur hexafluoride, carbon tetrafluoride, or a mixture of such gases, such as sulphur hexafluoride and nitrogen used in indoor or outdoor installations of high-voltage switchgear and controlgear, where the gas is used principally for its dielectric and/or arc-quenching…