ISO 3977 is an international standard related to the design and procurement of gas turbine system applications. ISO 3977 is based primarily on the ASME 133 series on gas turbines, as well as the API 616 and API 11PGT standards. The standard environmental design point of any gas turbine system is 15 °C, 60% relative humidity, and sea level elevation. The standard is divided into nine subsections and covers procurement, design requirements, installation and reliability. Logo of the International Organization for Standardization The International Organization for Standardization (ISO or iso) is an international standard-setting body made up of representatives from national standards bodies. ... Standards are produced by many organizations, some for internal usage only, others for use by a groups of people, groups of companies, or a subsection of an industry. ... This machine has a single-stage radial compressor and turbine, a recuperator, and foil bearings. ... The American Society of Mechanical Engineers (ASME) is a professional body, specifically an engineering society, focused on mechanical engineering. ... American institute which has defined industry standard for the energy conservation of motor oil. ... American institute which has defined industry standard for the energy conservation of motor oil. ... Relative humidity is the ratio of the current vapor pressure of water in any gas (especially air) to the equilibrium vapor pressure, at which the gas is called saturated at the current temperature, expressed as a percentage. ... For considerations of sea level change, in particular rise associated with possible global warming, see sea level rise. ...

External Links

• Related ISO Bulletin article, February 2000.