National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

Details

System to Prevent Clogging of Gas Sampling Tubes.

PB83178806

Publication Date	1981
Personal Author	Charlton, K. W.; Bowman, L. D.
Page Count	91
Abstract	The Bureau of Mines utilizes special testing methods for the analysis of underground mine atmospheres for use during or after mine disasters and fires. These methods depend upon drawing sample gas to the surface through multiple tube bundles with the subsequent analysis of grab samples or the automatic analysis by often remotely located instruments on a continuous, 24-hour basis. This report covers research and resulting development conducted by the Bureau of Mines to produce a reliable method to selectively remove condensable vapors and particulate in the sample gas stream under worst-case field conditions. The effort resulted in two prototype systems that have greater field utility than originally anticipated. The innovative project resulted in two patent applications submitted through the Bureau of Mines.
Keywords	Samplers Gas detectors Underground mining Tubes Safety Design criteria Performance evaluation Revisions Fires Dyers
Source Agency	Bureau of Mines
NTIS Subject Category	48A - Mineral Industries 99A - Analytical Chemistry
Corporate Authors	Charlton Technology, Inc., San Diego, CA.; Bureau of Mines, Washington, DC.
Document Type	Technical Report
Title Note	Open file rept. Feb 80-Aug 81.
NTIS Issue Number	198313
Contract Number	H0308042

System to Prevent Clogging of Gas Sampling Tubes.

System to Prevent Clogging of Gas Sampling Tubes.
PB83178806

Publication Date	1981
Personal Author	Charlton, K. W.; Bowman, L. D.
Page Count	91
Abstract	The Bureau of Mines utilizes special testing methods for the analysis of underground mine atmospheres for use during or after mine disasters and fires. These methods depend upon drawing sample gas to the surface through multiple tube bundles with the subsequent analysis of grab samples or the automatic analysis by often remotely located instruments on a continuous, 24-hour basis. This report covers research and resulting development conducted by the Bureau of Mines to produce a reliable method to selectively remove condensable vapors and particulate in the sample gas stream under worst-case field conditions. The effort resulted in two prototype systems that have greater field utility than originally anticipated. The innovative project resulted in two patent applications submitted through the Bureau of Mines.
Keywords	Samplers Gas detectors Underground mining Tubes Safety Design criteria Performance evaluation Revisions Fires Dyers
Source Agency	Bureau of Mines
NTIS Subject Category	48A - Mineral Industries 99A - Analytical Chemistry
Corporate Authors	Charlton Technology, Inc., San Diego, CA.; Bureau of Mines, Washington, DC.
Document Type	Technical Report
Title Note	Open file rept. Feb 80-Aug 81.
NTIS Issue Number	198313
Contract Number	H0308042