An Operational Evaluation (OPEVAL),[1] the final phase of operational test and evaluation prior to fielding of a system or new equipment, is a process used by NATO 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 requirements and documentation.
This military-related article is a stub.