Standards & Codes of Practice
Numerous standards and codes of practice have been issued by national and international bodies. Their function is to provide a benchmark in terms of detail and content for the materials, design, manufacture and supply of any product or service. This in turn allows suppliers, customers and users to assess the quality of the goods or services they are procuring.
In the UK, standards and codes of practice are issued by the British Standards Institution (BSI) as British Standards. A similar procedure is adopted by the International Organisation for Standardisation (ISO), and the role of the ISO has widened as the number of goods and services provided or traded across national boundaries increases. In many cases, a British Standard may be supplementary to or identical to an International Standard.
Several national bodies associated with specific industries or activities have also developed their own codes and standards, and these have now become generally accepted on an international basis. In particular, USA-based organisations such as the American Society of Mechanical Engineers (ASME), and the American Standards Association (ASA) have specifications that are used worldwide in large industrial applications.
In general terms, the British Standards available cover virtually all aspects of the design and installation of CHP plants. For packaged CHP systems, the standards and codes of practice covering materials, design, manufacture and components, installation, and systems and services are more relevant to the manufacturers and installers of CHP units than to users.
The onus, in general, is on the supplier of the goods to meet the requirements of those British Standards that cover the components and materials involved. It is not usual for a CHP installer to be involved in selecting or specifying components or materials.
British Standards are available from: The British Standards Institution 389 Chiswick High Road London W4 4AL.