Bulgarian Institute for Standardization
Standards – always a step ahead

Phone: +359 2 8174 523, +359 2 8174 504
E-mail: info@bds-bg.org
1797 Sofia, 13 "Lachezar Stanchev" Str., "Izgrev" Complex
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International Classification of Standards (ICS)

The ICS (International Classification for Standards) is intended to serve as a structure for catalogues of international, regional and national standards and other normative documents, and as a basis for standing-order systems for international, regional and national standards. It may also be used for classifying standards and normative documents in databases, libraries, etc. The general term “standard” is applied to all international, regional and national normative documents, such as standards, technical reports, technical specifications, technical regulations, guides, codes of practice, etc. and the drafts of such documents. The ICS is a hierarchical classification which consists of three levels. The first level is presented below. By clicking on the number, you can open the second level etc.

Browse by ICS : 27. ENERGY AND HEAT TRANSFER ENGINEERING

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Energy and heat transfer engineering in general

Energy efficiency. Energy conservation in general

Internal combustion engines

Gas and steam turbines. Steam engines

Burners. Boilers

Fuel cells

Hydrogen technologies

Heat pumps

Power stations in general

Nuclear energy engineering

Hydraulic energy engineering

Solar energy engineering

Wind turbine energy systems

Biological sources and alternative sources of energy

Refrigerating technology

Heat recovery. Thermal insulation