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Title: High Altitude Aerial Natural Gas Leak Detection System

Abstract

The objective of this program was to develop and demonstrate a cost-effective and power-efficient advanced standoff sensing technology able to detect and quantify, from a high-altitude (> 10,000 ft) aircraft, natural gas leaking from a high-pressure pipeline. The advanced technology is based on an enhanced version of the Remote Methane Leak Detector (RMLD) platform developed previously by Physical Sciences Inc. (PSI). The RMLD combines a telecommunications-style diode laser, fiber-optic components, and low-cost DSP electronics with the well-understood principles of Wavelength Modulation Spectroscopy (WMS), to indicate the presence of natural gas located between the operator and a topographic target. The transceiver transmits a laser beam onto a topographic target and receives some of the laser light reflected by the target. The controller processes the received light signal to deduce the amount of methane in the laser's path. For use in the airborne platform, we modified three aspects of the RMLD, by: (1) inserting an Erbium-doped optical fiber laser amplifier to increase the transmitted laser power from 10 mW to 5W; (2) increasing the optical receiver diameter from 10 cm to 25 cm; and (3) altering the laser wavelength from 1653 nm to 1618 nm. The modified RMLD system provides a path-integratedmore » methane concentration sensitivity {approx}5000 ppm-m, sufficient to detect the presence of a leak from a high capacity transmission line while discriminating against attenuation by ambient methane. In ground-based simulations of the aerial leak detection scenario, we demonstrated the ability to measure methane leaks within the laser beam path when it illuminates a topographic target 2000 m away. We also demonstrated simulated leak detection from ranges of 200 m using the 25 cm optical receiver without the fiber amplifier.« less

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Physical Sciences Incorporated
Sponsoring Org.:
USDOE
OSTI Identifier:
921001
DOE Contract Number:  
FC26-04NT42268
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
03 NATURAL GAS; 24 POWER TRANSMISSION AND DISTRIBUTION; AIRCRAFT; ALTITUDE; AMPLIFIERS; ATTENUATION; CAPACITY; DETECTION; FIBERS; LASERS; LEAK DETECTORS; METHANE; MODULATION; NATURAL GAS; OPTICAL FIBERS; POWER TRANSMISSION LINES; SENSITIVITY; SPECTROSCOPY; TARGETS; WAVELENGTHS

Citation Formats

Wainner, Richard T, Frish, Mickey B, Green, B David, Laderer, Matthew C, Allen, Mark G, and Morency, Joseph R. High Altitude Aerial Natural Gas Leak Detection System. United States: N. p., 2006. Web. doi:10.2172/921001.
Wainner, Richard T, Frish, Mickey B, Green, B David, Laderer, Matthew C, Allen, Mark G, & Morency, Joseph R. High Altitude Aerial Natural Gas Leak Detection System. United States. doi:10.2172/921001.
Wainner, Richard T, Frish, Mickey B, Green, B David, Laderer, Matthew C, Allen, Mark G, and Morency, Joseph R. Sun . "High Altitude Aerial Natural Gas Leak Detection System". United States. doi:10.2172/921001. https://www.osti.gov/servlets/purl/921001.
@article{osti_921001,
title = {High Altitude Aerial Natural Gas Leak Detection System},
author = {Wainner, Richard T and Frish, Mickey B and Green, B David and Laderer, Matthew C and Allen, Mark G and Morency, Joseph R},
abstractNote = {The objective of this program was to develop and demonstrate a cost-effective and power-efficient advanced standoff sensing technology able to detect and quantify, from a high-altitude (> 10,000 ft) aircraft, natural gas leaking from a high-pressure pipeline. The advanced technology is based on an enhanced version of the Remote Methane Leak Detector (RMLD) platform developed previously by Physical Sciences Inc. (PSI). The RMLD combines a telecommunications-style diode laser, fiber-optic components, and low-cost DSP electronics with the well-understood principles of Wavelength Modulation Spectroscopy (WMS), to indicate the presence of natural gas located between the operator and a topographic target. The transceiver transmits a laser beam onto a topographic target and receives some of the laser light reflected by the target. The controller processes the received light signal to deduce the amount of methane in the laser's path. For use in the airborne platform, we modified three aspects of the RMLD, by: (1) inserting an Erbium-doped optical fiber laser amplifier to increase the transmitted laser power from 10 mW to 5W; (2) increasing the optical receiver diameter from 10 cm to 25 cm; and (3) altering the laser wavelength from 1653 nm to 1618 nm. The modified RMLD system provides a path-integrated methane concentration sensitivity {approx}5000 ppm-m, sufficient to detect the presence of a leak from a high capacity transmission line while discriminating against attenuation by ambient methane. In ground-based simulations of the aerial leak detection scenario, we demonstrated the ability to measure methane leaks within the laser beam path when it illuminates a topographic target 2000 m away. We also demonstrated simulated leak detection from ranges of 200 m using the 25 cm optical receiver without the fiber amplifier.},
doi = {10.2172/921001},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2006},
month = {12}
}