Laboratory and field evaluation of instantaneous reading dust instruments

Technical Report · Sun Jan 01 00:00:00 EST 1984

OSTI ID:5534789

Thompson, E M; Treaftis, H N; Tomb, T F

A study was conducted to evaluate two instantaneous reading dust monitors that utilize the attenuation of beta rays to determine respirable mass dust concentrations. The one monitor utilizes impaction to deposit the sample on a mylar substrate while the other monitor collects the sample on a glass fiber filter. Measurements obtained using test aerosols of coal, limestone, and silica dusts were compared to measurements obtained with the approved personal coal mine dust sampler. Instrument linearity was synthetically checked using mylar and formvar films of varying thickness. The monitor employing the glass fiber filters was also tested in underground coal mines. The results showed that the monitor employing the glass fiber filter overestimated the concentration of all the aerosols tested, while the one using impaction to collect the sample underestimated them in the region 0 to 5 mg/m/sup 3/. 11 figs., 2 tabs.

• Research Organization: Mine Safety and Health Administration, Arlington, VA (USA)
• OSTI ID: 5534789
• Report Number(s): MSHA/IR-1148; ON: DE86901508
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

47 OTHER INSTRUMENTATION
01 COAL, LIGNITE, AND PEAT
DUSTS
MEASURING INSTRUMENTS
COMPARATIVE EVALUATIONS
PERFORMANCE TESTING
UNDERGROUND MINING
ATTENUATION
BETA PARTICLES
EXPERIMENTAL DATA
MONITORING
SAMPLING
US MSHA
CHARGED PARTICLES
DATA
INFORMATION
MINING
NATIONAL ORGANIZATIONS
NUMERICAL DATA
TESTING
US DOE
US ORGANIZATIONS
440300* - Miscellaneous Instruments- (-1989)
012000 - Coal
Lignite
& Peat- Mining