This European Standard contains the relevant functional requirements for gas pressure regulating stations,
which form part of gas transmission or distribution systems. It is applicable to the 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 to the
publication of this standard.
The stations covered by this European Standard have a maximum upstream operating pressure which does
not exceed 100 bar. For higher maximum upstream operating pressures this standard should be used as a
guideline.
If the inlet pipework of the station is a service line and the maximum upstream operating pressure does not
exceed 16 bar and the design flowrate is equal to or less than 200 m3/h under normal conditions, EN 12279
applies.
Basic system requirements for gas pressure regulating stations are contained in this European Standard.
Requirements for individual components (valves, regulators, safety devices, pipes, etc.) or installation of the
components are contained in the appropriate European Standards.
For combined regulating and measuring stations, the additional requirements of EN 1776 can apply.
The requirements in this European standard do not apply to the design and construction of auxiliary facilities
such as sampling, calorimetering, odorisation systems and density measuring. These facilities are covered by
the 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 in the gas industry. Requirements for unusual conditions cannot be specifically provided
for, nor are all engineering and construction details prescribed.
The requirements in this European standard are based on the physical and chemical data of gaseous fuels in
accordance with table 1 of EN 437:1993 for first and second family gases. Additional requirements in the
case of gaseous fuels heavier than air are and/or sour gases are not covered by this European Standard.
The objective of this European standard is to ensure the safe operation of such stations. This does not,
however, relieve all concerned of the responsibility for taking the necessary care and applying effective quality
management during the 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 in the CEN
member countries.
This European Standard is intended to be applied in association with these national standards and/or codes of
practice setting out the above mentioned principles.
In the event of conflicts in terms of more restrictive requirements in national legislation/regulation with the
requirements of this standard, the national legislation/regulation shall take precedence.
Diese Norm beschreibt Planung, Werkstoffe, Bau, Prüfung, Betrieb und Instandhaltung von neuen Gas-Druckregelanlagen mit Auslegungsdrücken bis 100 bar. Diese ÖNORM enthält die Europäische Änderung A1:2005. Folgende Änderung wurde durchgeführt: 11.3 wurde überarbeitet.