This European Standard containsThe relevant functional requirements for gas pressure regulating stations, which form part of gas transmission or distribution systems. It is applicable toThe design, materials, construction, testing, operation and maintenance of gas pressure regulating stations.This European Standard does not apply to gas pressure regulating stations commissioned prior toThe publication of this standard.The stations covered byThis European Standard have a maximum upstream operating pressure which does not exceed 100 bar. For higher maximum upstream operating pressuresThis standard should be used as a guideline.IfThe inlet pipework of the station is a service line andThe maximum upstream operating pressure does not exceed 16 bar andThe design flowrate is equal to or less than 200 m/h under normal conditions, EN 12279 applies.Basic system requirements for gas pressure regulating stations are contained inThis European Standard. Requirements for individual components (valves, regulators, safety devices, pipes, etc.) or installation of the components are contained inThe appropriate European Standards.For combined regulating and measuring stations,The additional requirements of EN 1776 can apply.The requirements inThis European Standard do not apply toThe design and construction of auxiliary facilities such as sampling, calorimetering, odorization systems and density measuring.These facilities are covered byThe appropriate European Standards, where existing, or other relevant standards.The requirements of this European Standard are based on good gas engineering practice under conditions normally encountered inThe gas industry. Requirements for unusual conditions cannot be specifically provided for, nor are all engineering and construction details prescribed.The requirements inThis European Standard are based onThe physical and chemical data of gaseous fuels in accordance with EN 437:1993, Table 1 for first and second family gases. Additional requirements inThe case of gaseous fuels heavier than air and/or sour gases are not covered byThis European Standard.The objective of this European Standard is to ensureThe safe operation of such stations.This does not, however, relieve all concerned of the responsibility for takingThe necessary care and applying effective quality management duringThe design, construction and operation.This European Standard specifies common basic principles for gas supply systems. Users of this European Standard should be aware that more detailed national standards and/or codes of practice can exist inThe CEN member countries.This European Standard is intended to be applied in association withThese national standards and/or codes of practice setting outThe above mentioned principles.InThe event of conflicts in terms of more restrictive requirements in national legislation/regulation withThe requirements of this standard,The national legislation/regulation shall take precedence
EN 12186:2000 history
2014EN 12186:2014 Gas infrastructure - Gas pressure regulating stations for transmission and distribution - Functional requirements
2000EN 12186:2000 Gas Supply Systems - Gas Pressure Regulating Stations for Transmission and Distribution - Functional Requirements Amendment A1: 08/2005