Enclosure system for hot work within the vicinity of flammable or combustible material

  • US 7,091,848 B2
  • Filed: 12/14/2004
  • Issued: 08/15/2006
  • Est. Priority Date: 03/13/2003
  • Status: Active Grant
First Claim
Patent Images

1. An enclosure system comprised of one or more enclosures built about at least one object to be hot worked at a facility wherein flammable or combustible materials are located within a hazardous distance from where the hot work is to be conducted, which enclosure system is comprised of:

  • a) at least one enclosure, each enclosure comprising;

    i) enclosing walls, ceiling and floor defining a chamber in which the hot work is to be conducted;

    ii) at least one door to allow workers to enter and exit;

    iii) at least one air inlet port;

    iv) at least one air outlet port;

    v) a blower having an intake and an exhaust, which exhaust is in fluid communication with said at least one air inlet port;

    vi) a blower control in communication with said blower and to a gas detection monitor located at the intake of said blower and to a shutdown controller, wherein the blower control has the capability of allowing the blower to continue to operate during an emergency shutdown that is not triggered by combustible or flammable gas detected at the gas detection monitor at the intake of the blower;

    vii) a differential pressure monitor for monitoring the pressure within the enclosure relative to the pressure outside of the enclosure;

    viii) at least one manual emergency shutdown switch inside of said enclosure; and

    ix)at least one manual emergency shutdown switch outside of, but within the perimeter of, said enclosure;

    b) a monitoring system comprised of;

    i) a plurality of gas detection monitors located at predetermined locations inside and outside of each enclosure;

    wherein each of said gas detection monitors having a means of communicating with a gas detection controller console; and

    ii) a gas detection controller console comprised of;

    a) a means capable of receiving data transmitted from the plurality of gas detection monitors;

    b) an interface means capable of communicating data from said means to a central processing unit;

    c) the central processing unit containing software capable of accepting, storing, computing, and displaying data received from said plurality of gas detection monitors, d) a display device in communication with said central processing unit and capable of displaying data from said plurality of gas detection monitors; and

    c) an interface means capable of communicating a signal from the central processing unit to a control system;

    c) the control system comprised of;

    i) an operator controller console comprised of;

    a) a source of electrical power for the enclosure system;

    b) at least one control device;

    c) a means for displaying the status of each enclosure;

    d) the capability of communicating predetermined by-pass and system shutdown signals to a shut down controller;

    e) a by-pass function that has the capability of overriding a shutdown signal triggered by the differential pressure monitor in any one or more of said enclosures to allow workers to enter and exit said one or more enclosures without triggering a shutdown; and

    f) an audible alarm that will activate when a shutdown occurs; and

    ii) the shutdown controller capable of sending shutdown signals to one or more enclosure control devices, and one or more shutdown control devices and to various equipment associated with the hot work to be conducted in said one or more enclosures.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×