1.1
This Standard covers the design, construction, operation, and maintenance of
oil and gas industry pipeline systems, which convey
(a) liquid hydrocarbons, including crude oil, multiphase fluids, condensate,
liquid petroleum products, natural gas liquids, and liquefied petroleum gas;
(b) oilfield water;
(c) oilfield steam; or
(d) gas.*
*Designers are cautioned that the requirements in this Standard may not be
appropriate for gases other than natural gas, manufactured gas, or synthetic
natural gas.

1.2
The scope of this Standard, as shown in Figures 1.1 and 1.2, includes
(a) for oil industry fluids, piping in offshore pipelines, onshore pipelines,
tank farms, pump stations, pressure-reducing stations, and metering stations;
(b) oil pipeline pump stations, tank farms, and pipeline terminals;
(c) for gas industry fluids, piping in offshore pipelines, onshore pipelines,
compressor stations, metering stations, and pressure-regulating stations;
(d) gas compressor stations; and
(e) gas storage lines and pipe-type or bottle-type gas storage vessels.

1.3
This Standard does not apply to
(a) design and fabrication of pressure vessels that are covered by appropriate
pressure vessel codes;
(b) piping with metal temperatures below -70°C;
(c) piping other than oilfield steam distribution piping, with metal
temperatures above 230°C;
Note: Although not specifically covered by this Standard, designs for higher
temperatures may be used, provided that the effects of such higher temperatures
are accounted for.
(d) gas piping beyond the outlet of the customer's meter set assembly (which is
covered by CAN/CGA-B149.1);
(e) piping in natural gasoline extraction plants, gas processing plants (except
main gas stream piping in dehydration and all other processing plants installed
as part of gas pipeline systems), gas manufacturing plants, industrial plants,
and mines;
(f) oil refineries, terminals other than pipeline terminals, and marketing bulk
plants;
(g) in-plant piping for drinking, make-up and boiler feed water;
(h) casing, tubing, or pipe in oil or gas wells, wellheads, separators,
production tanks, and other production facilities;
(i) vent piping for waste gases of any kind operating at or near atmospheric
pressure;
(j) heat exchangers;
(k) prefabricated units that employ plate and longitudinal welds rather than
pipe;
(l) liquefied natural gas systems;
(m) liquid fuel distribution systems; and
(n) loading/unloading facilities for tankers or barges.

1.4
This Standard is intended to establish essential requirements and minimum
standards for the design, installation, and operation of oil and gas industry
pipeline systems. This Standard is not a design handbook and the exercise of
competent engineering judgement is a necessary requirement to be employed
concurrently with its use.

1.5
The requirements of this Standard are applicable to the operation, maintenance,
and upgrading of existing installations; however, it is not intended that such
requirements be applied retroactively to existing installations insofar as
design, construction, and established operating pressures are concerned.

1.6
Where any requirements of this Standard are at variance with the requirements
of other standards or codes incorporated by reference into this Standard, the
requirements of this Standard shall govern.

1.7
It is not the intent of this Standard to prevent the development of new
equipment or practices, or to prescribe how such innovations should be handled.