IGEM/TD/1 - Edition 5
IGEM/TD/1 Steel pipelines and associated installations
for high pressure gas transmission.
This Standard contains information on the construction,
operation and maintenance of onshore steel pipelines used for the
large-scale transmission of natural gas. It also applies to some
associated installations e.g. above-ground valves.
This Standard covers the design, construction, inspection,
testing, operation and maintenance of steel pipelines and certain
associated installations for the transmission of dry Natural Gas,
with or without odorisation , at MOP exceeding 16 bar and not
exceeding 100 bar. It may be appropriate for use with other gases
but the characteristics and consequential effect upon design,
material, operations and maintenance of the pipeline must be taken
It covers operating temperatures between -25oC and
+120oC and applies to pipelines laid between points on
land, including water crossing. If a pipeline has an offshore part,
additional guidance may be required for that section, though many
of these requirements will remain valid. It equally applies to
pipework design for certain associated installations, including
above-ground valves, pig trap installations, manifolds,
multi-junction stations, the main pipework at compressor stations,
metering installations, connections and other off takes. It does
not apply for PRIs.
Specifically, it details:
- Management systems
- Planning and legal considerations
- Materials and component selections
- Pipeline design, including sizing, thickness, stress
calculation, fatigue, area types, sleeving, valves and
- Construction, including safety and environmental measures,
welding, bedding and covering, backfilling and crossing.
- Testing, including equipment, planning, acceptance criteria,
safety and repair.
- Protection against corrosion
- Associated installations, including site layout and selection,
design, construction and testing
- Operation and maintenance, including surveillance and