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Title: Natural gas leak mapper

Abstract

A system is described that is suitable for use in determining the location of leaks of gases having a background concentration. The system is a point-wise backscatter absorption gas measurement system that measures absorption and distance to each point of an image. The absorption measurement provides an indication of the total amount of a gas of interest, and the distance provides an estimate of the background concentration of gas. The distance is measured from the time-of-flight of laser pulse that is generated along with the absorption measurement light. The measurements are formated into an image of the presence of gas in excess of the background. Alternatively, an image of the scene is superimosed on the image of the gas to aid in locating leaks. By further modeling excess gas as a plume having a known concentration profile, the present system provides an estimate of the maximum concentration of the gas of interest.

Inventors:
 [1];  [2];  [1];  [3]
  1. Livermore, CA
  2. Dublin, CA
  3. Albany, CA
Issue Date:
Research Org.:
Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
936711
Patent Number(s):
7375814
Application Number:
11/078,527
Assignee:
Sandia Corporation (Livermore, CA)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G - PHYSICS G01 - MEASURING G01M - TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Reichardt, Thomas A, Luong, Amy Khai, Kulp, Thomas J, and Devdas, Sanjay. Natural gas leak mapper. United States: N. p., 2008. Web.
Reichardt, Thomas A, Luong, Amy Khai, Kulp, Thomas J, & Devdas, Sanjay. Natural gas leak mapper. United States.
Reichardt, Thomas A, Luong, Amy Khai, Kulp, Thomas J, and Devdas, Sanjay. Tue . "Natural gas leak mapper". United States. https://www.osti.gov/servlets/purl/936711.
@article{osti_936711,
title = {Natural gas leak mapper},
author = {Reichardt, Thomas A and Luong, Amy Khai and Kulp, Thomas J and Devdas, Sanjay},
abstractNote = {A system is described that is suitable for use in determining the location of leaks of gases having a background concentration. The system is a point-wise backscatter absorption gas measurement system that measures absorption and distance to each point of an image. The absorption measurement provides an indication of the total amount of a gas of interest, and the distance provides an estimate of the background concentration of gas. The distance is measured from the time-of-flight of laser pulse that is generated along with the absorption measurement light. The measurements are formated into an image of the presence of gas in excess of the background. Alternatively, an image of the scene is superimosed on the image of the gas to aid in locating leaks. By further modeling excess gas as a plume having a known concentration profile, the present system provides an estimate of the maximum concentration of the gas of interest.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2008},
month = {5}
}

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