Project diary

File:U.S. Navy Builder 1st Class Sergio S. Armas, with Naval Mobile Construction Battalion 3, inspects project log books to ensure Builder 3rd Class Micaela Tennant is keeping them up to date at Commander Fleet 130827-N-DM637-003.jpg

Project logs being inspected at a US Navy station

A project diary (also history, journal or log) is a record of a project which is compiled while it is being done.

This record might be used as legal evidence if there is a dispute about the outcome of the project such as a cost overrun. To facilitate this, entries should be indelible, time-stamped and signed so that they may not be easily altered in retrospect. The details kept would typically include a record of the time and content of communications such as orders and instructions; events, incidents and their remediation; and the names of the people and parties responsible.