{{Unreferenced, date=April 2009
An Operational Evaluation (OPEVAL), the final phase of operational test and evaluation prior to fielding of a system or new equipment, is a process used by
NATO
The North Atlantic Treaty Organization (NATO, ; french: Organisation du traité de l'Atlantique nord, ), also called the North Atlantic Alliance, is an intergovernmental military alliance between 30 member states – 28 European and two No ...
military forces and designed to be no more than a 'customer acceptance' test. OPEVALs are run by the customer's agent, in the military's case one of the operational test agencies (OTAs) and uses a pre-designated operationally oriented test plan. The intent of the test is to verify that the product or proposed system meets all pre-defined operational requirements.
OPEVALs are widely associated with
STANAG
In NATO, a standardization agreement (STANAG, redundantly: STANAG agreement) defines processes, procedures, terms, and conditions for common military or technical procedures or equipment between the member countries of the alliance. Each NATO st ...
requirements and documentation.
NATO Standardization Agreements