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Safe Hazardous Gas Isolation Method

IP.com Disclosure Number: IPCOM000109617D
Original Publication Date: 1992-Sep-01
Included in the Prior Art Database: 2005-Mar-24
Document File: 2 page(s) / 94K

Publishing Venue

IBM

Related People

Mardigian, R: AUTHOR [+3]

Abstract

Disclosed is a hazardous gas isolation method using a valving assembly forming a vacuum block to isolate a component and/or sub-assembly of an active pipe distribution system.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 56% of the total text.

Safe Hazardous Gas Isolation Method

       Disclosed is a hazardous gas isolation method using a
valving assembly forming a vacuum block to isolate a component and/or
sub-assembly of an active pipe distribution system.

      This method can accomplish any or all of the following:
o   Process Needs
     -   Isolation and/or Controlled Discharge of Toxic Substance
     -   Manual or automatic process operation
     -   Contamination Control
     -   Purity Certification
     -   All Weather Installations
o   Satisfies Legal Requirements
     -   OSHA 29 CFR 1910.147
         --  Safe Isolation of Hazardous Energy Sources
         --  Monitoring of isolation
         --  Environmentally safe discharge of Energy

      Isolation is accomplished by evacuating the "vacuum-block tee"
illustrated and monitoring the integrity of the vacuum by means of a
vacuum/pressure sensor/transmitter.  The transducer output signal may
be used in a "supervisory" mode for system block monitoring with an
alarm at a predetermined leakage set point or as an "on-line system
control" point during normal system operation.

      This method of control fully satisfies "OSHA" Hazardous Energy
Source monitored isolation requirements and allows safe access to
storage/distribution system components and/or process equipment.
Operation of the "vacuum-block" and leak sensitivity is illustrated
in the following:
      A di...