API RP 1109 Marking Liquid Petroleum Pipeline Facilities
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API RP 1109 Document Information:
Title
Marking Liquid Petroleum Pipeline Facilities
American Petroleum Institute
Publication Date:
Jul 1, 2003
Scope:
This recommended practice addresses the permanent marking of liquid
petroleum pipeline
transportation facilities. It covers the design, message,
installation, placement, inspection, and
maintenance of markers and signs on pipeline facilities located
onshore and at inland waterway
crossings. Markers and signs indicate the presence of a pipeline
facility and warn of the potential
hazards associated with its presence and operation. The markers and
signs may contain information
to be used by the public when reporting emergencies and seeking
assistance in determining the
precise location of a buried pipeline.
The provisions of this recommended practice cover the minimum marker
and sign requirements for
liquid petroleum pipeline facilities. Alternative markers, which are
recommended for some locations
under certain circumstances, are also discussed. The pipeline operator
is responsible for
determining the extent of pipeline marking. Consideration should be
given to the consequences of
pipeline failure or damage; hazardous characteristics of the commodity
being transported; and the
pipeline's proximity to industrial, commercial, residential, and
environmentally sensitive areas.
Several examples of markers and signs with locations are illustrated
in Figures 1, 2, 6, and 7. The
pipeline marking programs are also integral parts of the pipeline
operator's maintenance and
emergency plans.
This recommended practice is not intended to be applied retroactively.
Its recommendations are for
new construction and for normal marker maintenance programs subsequent
to the effective date of
this edition.
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