Chapter 3—Containing Underground Nuclear Explosions « 39 Figure 3-3—Minimum Shot Separation for Tunnel Tests Rainier Mesa Tunnel tests are typically overburied. Collapse chimneys do not usually extend to surface. 4 eg hores se ~ sae yo Diagram to approximate scale Scale illustration of the minimum separation distance (2 combined cavity radii pius 100 feet) for horizontal tunnel tests. Tunnel tests are typically overburied. Collapse chimneys do not usually extend to the surface. SOURCE: Office of Technology Assessment, 1989 Evaluation Charter, remains specifically defined as follows:!” 1. evaluate, as an independent organization reporting to the Manager of Nevada Operations, the containment design of each proposed nuclear test; 2. assure that all relevant data available for proper evaluation are considered; 3. advise the manager of Nevada Operations of the technical adequacy of such design from the viewpoint of containment, thus providing the manager a basis on which to request detonation authority; and '7Containment Evaluation Charter, June 1, 1986, Section II. 4. maintain a historical record of each evaluation and of the data, proceedings, and discussions pertaining thereto. Although the CEP is charged with rendering a judgment as to the adequacy of the design of the containment, the panel does not vote. Each member provides his independent judgmentas to the prospect of containment, usually addressing his own area of expertise but free to commenton any aspectof the test. The Chairman is in charge of summarizing these statements in a recommendation to the manager on whether to proceed with the test. based only on the containment aspects. Containment Evaluation Panel guidelines instruct members to maketheir judgmentsin such a way that: