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Standards Development
This document describes common principles for pressure testing, commissioning and decommissioning of gas infrastructures for the conveyance of gases and blends of gases which are in the gaseous state when conveyed in the gas pipeline infrastructure such as hydrogen, hydrogen rich, and methane rich gases, dimethyl ether (DME) and propane and butanes used for combustion and/or as feedstock, excluding steam and compressed air, where technical evaluation has ensured that operating conditions, constituents and properties of the gas do not affect the safe operation and maintenance of the gas infrastructure.
This document does not cover installation pipework which is covered by EN 1775. The specified procedures are applicable to strength testing, tightness testing and combined testing. Test pressure levels, test periods and acceptance criteria are not covered by this document.
Additional measures or different methods of testing, commissioning or decommissioning can be required by legislation of the individual member countries or at the discretion of the pipeline operator. These measures are intended to ensure safety and environmental compliance. This European Standard specifies common basic principles for gas infrastructure. Users of this European Standard are expected to be aware that there can exist more detailed national standards and/or code of practice in the CEN member countries.
This document is intended to be applied in association with these national standards and/or codes of practice setting out the above-mentioned basic principles.
This proposal intends
- to generally revise the technical provisions for the pressure testing, commissioning and decommissioning procedures for the state of the art
- to support the decarbonisation of the energy grid and the establishment of the future hydrogen grid by providing the appropriate technical provisions for the pressure testing, commissioning and decommissioning
- to ensure safety over the different stages of life-cycle of the hydrogen grid.
- to adapt the document to climate requirements.
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