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

Results of Air Samples at H. K. Porter Company, Charlotte, North Carolina.

PB81239790

Publication Date	1964
Personal Author	Ayer, H. E.
Page Count	16
Abstract	Worker exposures to asbestos (1332214) were surveyed at Charlotte Works, H. K. Porter Company in Charlotte, North Carolina, during February, 1964. Membrane filter counts were reported for total fibers and for fibers longer than 10 microns. Impinger samples also were taken. At the time of this sampling, no standards existed for asbestos fiber exposure. Fiber counts shown on the same line with an impinger count represent simultaneous adjacent samples collected by the two methods. The author concludes that while there were differences between impinger and membrane counts for the same operation and for similar operations in different facilities, impinger counts of 5 million particles per cubic foot (mppcf) were equivalent to counts of 50 total fibers per cubic centimeter (cc), 30 fibers longer than 5 microns per cc or 15 fibers longer than 10 microns per cc and they suggest additional controls when these concentrations are exceeded even if the impinger counts are within the 5mppcf.
Keywords	Sampling Industrial medicine Asbestos Test Methodology Air pollution Standards Concentration(Composition) Tables(Data) North Carolina Analytical methods Occupational safety and health Air pollution sampling Charlotte(North Carolina) Procedures CAS 1332-21-4 Charlotte Works H. K. Porter Company
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	57U - Public Health & Industrial Medicine 57Y - Toxicology 68A - Air Pollution & Control 68G - Environmental Health & Safety
Corporate Authors	National Inst. for Occupational Safety and Health, Cincinnati, OH. Div. of Field Studies and Clinical Investigations.
Document Type	Technical Report
Title Note	Industrywide study.
NTIS Issue Number	198125

Results of Air Samples at H. K. Porter Company, Charlotte, North Carolina.

Results of Air Samples at H. K. Porter Company, Charlotte, North Carolina.
PB81239790

Publication Date	1964
Personal Author	Ayer, H. E.
Page Count	16
Abstract	Worker exposures to asbestos (1332214) were surveyed at Charlotte Works, H. K. Porter Company in Charlotte, North Carolina, during February, 1964. Membrane filter counts were reported for total fibers and for fibers longer than 10 microns. Impinger samples also were taken. At the time of this sampling, no standards existed for asbestos fiber exposure. Fiber counts shown on the same line with an impinger count represent simultaneous adjacent samples collected by the two methods. The author concludes that while there were differences between impinger and membrane counts for the same operation and for similar operations in different facilities, impinger counts of 5 million particles per cubic foot (mppcf) were equivalent to counts of 50 total fibers per cubic centimeter (cc), 30 fibers longer than 5 microns per cc or 15 fibers longer than 10 microns per cc and they suggest additional controls when these concentrations are exceeded even if the impinger counts are within the 5mppcf.
Keywords	Sampling Industrial medicine Asbestos Test Methodology Air pollution Standards Concentration(Composition) Tables(Data) North Carolina Analytical methods Occupational safety and health Air pollution sampling Charlotte(North Carolina) Procedures CAS 1332-21-4 Charlotte Works H. K. Porter Company
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	57U - Public Health & Industrial Medicine 57Y - Toxicology 68A - Air Pollution & Control 68G - Environmental Health & Safety
Corporate Authors	National Inst. for Occupational Safety and Health, Cincinnati, OH. Div. of Field Studies and Clinical Investigations.
Document Type	Technical Report
Title Note	Industrywide study.
NTIS Issue Number	198125