To derive the most value from a test a Test Plan should be developed to define the selected elements against explicit test objectives and success criteria. The test plan should contain a schedule detailing the time frames for each test and test participants and should clearly delineate scope, objectives, scenario and logistics.
The scenario should be as realistic as possible to test the plan properly and gain maximum support from the participants. In some tests it is appropriate to seek involvement from outside personnel such as emergency services, security, the Local Authority emergency planning officer, subject experts and suppliers
Questionnaires should be prepared for observers so they can record their observations during the test.