IGEM - TD/3
Steel and PE pipelines for gas distribution
|Publication Date:||1 October 2015|
This Standard contains details of basic pipeline construction and installation for distribution of gas to a service that supplies individual premises.
These recommendations cover the design, construction, inspection, testing and operation of steel and polyethylene (PE) pipelines for the distribution of dry Natural Gas and LPG. Specifically they cover:
- For Natural Gas, pipelines of MOP not exceeding 10 bar and at a temperature from 0oC to 20oC for PE and pipelines not exceeding 16 bar and at a temperature from -25oC to 40oC for steel.
- For LPG, the recommendations limit MOP to 2 bar in the LPG vapour phase. They cover the predominantly underground network of pipes that distribute gas from a pipeline used for gas transmission, central LPG storage facility or gas production plant, to a service or services supplying domestic, commercial and industrial premises. They are primarily apply to Natural gas but are appropriate to 1st, 2nd and 3rd family gases. For pipelines of which any part is offshore, additional guidance may be required for the offshore section, though many of the recommendations will be valid. Specifically, this document details:
- Legal considerations such as land rights, environmental protection and noise control
- Design process, including material selection, routing, safety precautions, water crossings and above-ground installations
- Construction, including planning, excavation, pipe laying and jointing, corrosion prevention and anchorage.
- Testing methods and criteria, maintenance of test records and de-commissioning of pipelines.
- Alterations and connections to existing, live pipelines
- Maintenance and repair methodologies, including inspection and surveillance methods.
- Additional considerations when working with LPG.