papers, prints, plans, and so on, that bear on the
work performed. This will be discussed later in
Departure from specifications. This is a lack of
compliance with any authoritative document,
plan, procedure, or instruction. A detailed
discussion will follow later in the chapter.
Documentation. This is the record of objective
evidence establishing the requisite quality of the
material, component, or work done.
Level of essentiality. A level of essentiality is a
certain level of confidence required in the
reliability of repairs made. The different levels of
essentiality will be discussed later in the chapter.
Procedure. A procedure is a written instruction
designed for use in production and repair,
delineating all essential elements and guidance
necessary to produce acceptable and reliable
Process. This is a set of actions written in a
special sequential order by which a repair or
maintenance action, a test, or an inspection is
done using specific guidelines, tools, and
Reliability. Reliability means the probability
that an item will perform its intended function for
a specified interval under stated conditions.
SUBSAFE. The acronym SUBSAFE is a
shorthand reference to the Submarine Safety
Program, which provides a high level of
confidence in the material conditions of the hull
integrity boundary. SUBSAFE will be discussed
later in the chapter.
THE CONTROLLED WORK PACKAGE
To provide additional assurance that a quality
product will result from the in-process fabrication or
repair, the controlled work package (CWP) was
developed. It provides QC techniques (requirements or
procedures) and shows objective quality evidence
(documentation) of adherence to specified quality
standards. These requirements or procedures include
both external (type commander) and internal
(command-generated) information for work package
processing and sign-off. The typical CWP that will
arrive at your desk will have QA forms, departure from
specifications forms, material deficiency forms,
production task control forms, and QC personnel
sign-off requirements. You, and all the other work
centers involved in the performance of the task, must
review the contents of each package as well. When you
review the package, check that the requirements
specified for their accomplishment are correct, in a
correct sequence, and soon. Each CWP covers the entire
scope of the work process and is able to stand on its own.
Traceability from the work package to other
certification documentation is provided by the job
control number (JCN).
You must ensure that the CWP is at the job site
during the performance of the task. If the work
procedure requires the simultaneous performance of
procedure steps and these steps are done in different
locations, use the locally developed practices to ensure
that you maintain positive control for each step.
Immediately after a job is completed but before the
tended unit gets underway, each assigned work center
and the QAO will review the work package
documentation for completeness and correctness. If you
and your workers have been doing the assigned steps as
stated, this should not be a problem. Ensure that all the
verification signature blocks are signed. Make sure all
references, such as tech manuals or drawings, are
returned to the appropriate place.
You will find a lot of documentation inside the CWP
when it arrives at your desk. Inside will be process
instructions, plans, technical drawings, and instructions
pertinent to the production job at hand. Documents listed
as references are not included in the CWP but must be
available when required. You will also find a copy of
applicable portions of references included in the CWT.
The 4790/2R, Automated Work Request, is included in
the CWP to provide complete documentation and
reference back to the originating tended unit. You will
use all of the documentation to perform the maintenance
action, production task, or process assigned to your
You can make minor corrections to the work
procedure (as directed by local instructions) as long as
they do not change the scope of the work being
performed. However, if you need to change the original
scope of the job, such as working on a part not originally
intended to be worked on, you must initiate a revision.
The revision cover sheet gives exact instructions on