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Another feature of the present invention is that the various valves and controls can be protected from being manually overridden by placing the valves and other sensors in a protective enclosure or dome. The enclosure can be constructed to detect an attempt to mechanically access or manually manipulate the valves. A number of different types of devices can be used for this purpose. The valves can be placed in a vacuum or pressurized chamber, such that a pressure change caused by manual interference causes shutdown and lockdown of all valves that cannot be overridden. An electronic or light controlled interference detector or other such device could also be used. Any controls or measuring devices can be protected in this manner.

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