- A new ECO is created that states (in general terms) the reason for
the changes and the scope of what the changes will affect. It also
defines (in specific and detailed terms) the changes to be made to
each item and what the dispositions of remaining old-revision items
are to be. After being submitted, and a cognizant
engineer confirms that everything is appropriately stated, the ECO is Issued.
- The (issued) ECO is distributed to all relevant departments in the
organization. When all departments have signed
off (have acknowledged being informed of the proposed changes)
the ECO is marked Approved.
- The (approved) ECO is then sent to "Drafting" for drawing,
document and database changes and/or the creation of new documents and
drawings. Upon completing the changes, Drafting marks the ECO as Completed.
- The (completed) ECO is checked by an engineer who examines all
documents in the scope of the ECO to confirm that the changes are
accurate per the ECO instructions, and then marks the ECO as Checked.
- The (checked) ECO is Released, making all the
changes effective and the new data available to all other users of the
The ECO controls enforce the sequence.