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System for reducing disaster damage

  • US 6,266,579 B1
  • Filed: 02/12/1998
  • Issued: 07/24/2001
  • Est. Priority Date: 03/05/1997
  • Status: Expired due to Term
First Claim
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1. A system for affecting the interaction of a set of member utilities interacting with the environment of a site, each member of the set of utilities being created externally from the site and being conducted into the site through an input port having at least one access state wherein the input port facilitates access to the site and at least one restriction state wherein the input port restricts access to the site and being conducted out of the site through an output port having at least one egress state wherein the output port facilitates egress from the site and at least one restriction state wherein the output port restricts egress from the site, the system comprising:

  • (i) means for generating a first fault signal in response to a condition that threatens to degrade the environment of the site, wherein the means for generating the first fault signal includes;

    (a) means for detecting whether each member of the set of utilities, as measured at its input port, is faulty, (b) means for detecting whether each member of the set of utilities, as measured at its output port, is faulty, and (c) means for detecting whether each member of the set of utilities, as measured within the site, is faulty;

    (ii) means for ensuring that the input port for each member of the set of utilities is in a predetermined safe state in response to the first fault signal, the safe state being either an access state or a restriction state; and

    (iii) means for selectively restoring the input port for certain members of the set of utilities to predetermined operating states in response to a change in the first fault signal, the operating state being either an access state or a restriction state.

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