Preliminary equipment location: Identifies
location within ship of the installed component.
Service number/valve mark/electrical symbol
number: Serial number identifies a specific unit
of production. Valve mark/electrical symbol
number identifies a specific valve or electrical
component used within a system when multiple
applications of the same component are present
within the same system.
Federal supply code for manufacturers:
Identifies a specific manufacturer for an
Ship type and hull number: The specific ship for
which the COSAL is published.
Date: COSAL publication date.
Page no.: Page number of index.
ALLOWANCE PARTS LIST (APL) . The APL
is a technical document prepared for a specific item or
component of equipment. It lists descriptive data and
characteristics of the equipment, repair parts, and other
technical and supply management information. The
COSAL binder should contain an APL for every item or
component of equipment on board the ship.
Each APL is assigned a nine-digit identifying
number by SPCC. The first two digits identify the
equipment/component category and are listed in an
index in the COSAL introduction. The APLs are filed in
numerical sequence in part II of the COSAL.
You may find an APL number containing a letter P
prefix. This indicates an incomplete APL. The body of
the APL usually tells why it is incomplete and the action
being taken or required to complete it.
An APL will not always cover a complete
equipment; refer to the section B index (fig. 5-2). The
second entry is FEEDWATER SYSTEMS TESTING
EQUIPMENT. This is the name of a complete system
or equipment for the feedwater system test equipment.
Column 2 lists the various feedwater test equipment
components, each of which, in this case, has its own APL
number. Therefore, the APL may cover a complete
equipment or only one component of that equipment. An
example of an APL page is shown in figure 5-4. The
different data elements are numbered and refer to the
numbers in the following list.
1. Equipment/component nomenclature/
characteristics: Name of equipment or
component and brief description. This
corresponds to the index entries.
Figure 5-4.-Example of an APL.