actual facility schematic must match what is actually in place. The
following identification method is suggested:
Valves - Valves located along the main pipeline (ML) are identified by
the office of the chief dispatcher, starting at the beginning of the
pipeline and ending outside the last facility of the head terminal.
These valves are identified by the letter ML, followed by a dash (-
), and a number. For example: ML-1, denotes a valve as being the
first in the pipeline system.
valves, start with the first valve at the tank and number across the
manifold in sequence. Write the tank number down first, followed by
a dash, and then the valve number. For example, if identifying Tank
10, all valves starting from the tank would be numbered sequentially
beginning with 10-1, then 10-2, then 10-3, etc., to the last valve
in the manifold for that particular line.
Pumps - Pumps are identified by numbers. Pump valves may be
identified with a letter or numbering system. For example, Pump 1
can have its suction and discharge valves identified individually or
in sequence. For example, P-1 or Pump Suction Valve (PSV)-1, and P-
2 or Pump Discharge Valve (PDV)-2. An alternative that would
identify valves to a specific pump is P-1-1 or PSV-1-1 and P-1-2 or
PDV-1-2 for Pump 1, suction and discharge valves.
NOTE: When there is more than one pump, the valve can be numbered
in sequence (i.e., P-1 through P-4, two pumps, or in relation to the
specific pump).
Pipelines - Pipelines, both incoming from and outgoing to the
manifold, are identified by a letter. The incoming lines of a
pipeline begin where they enter the facility and end where they
connect to the manifold. For example, a line entering the facility
is identified with a letter (starting with A). Valves located in
the line are identified with the line letter followed by a dash (-),
and then in numerical sequence starting with 1. The highest number
identifies the valve in the line just prior to its connection to the
manifold. If line A has five valves in it, then they would be
numbered starting with A-1 (the valve nearest the entry to the
facility) and ending with A-5 (the valve closest to the manifold).
The outgoing lines begin at the furthest point inside the manifold
and are identified with the line letter, a dash, and a number. The
last valve in an outgoing line is the one at the point where the
line ends in, or exits, the facility.
Additional markings used in a system for identification include the
following:
Direction of Flow - The direction of flow in a line is indicated with an
arrow physically placed/painted on the line. The direction can be in
one direction only or in both directions.
Product Identification for Products - The product identification for
products should relate to the product in the line (i.e., tank lines
immediately outside the manifold should show the product).
Product Identification for Facilities - The product identification for a
facility will be applied where practical depending on the tactical
situation and the commander's guidance.
12-94
QM 5099
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